Daily bump.

[thirdparty/gcc.git] / gcc / ada / ChangeLog

2020-10-22  Eric Botcazou  <ebotcazou@adacore.com>

        * Makefile.rtl (GNATRTL_128BIT_PAIRS): Add i-cexten.ads.
        * debug.adb (d.H): Document new usage.
        * doc/gnat_rm/representation_clauses_and_pragmas.rst (Size Clauses):
        Document new limit on 64-bit platforms.
        (Component_Size Clauses): Likewise.
        (Pragma Pack for Arrays): Likewise.
        (Pragma Pack for Records): Likewise.
        (Record Representation Clauses): Likewise.
        * gnat_rm.texi: Regenerate.
        * gnat1drv.adb (Adjust_Global_Switches): Rewrite code enabling or
        disabling the support for 128-bit integer types.
        * switch-c.adb (Scan_Front_End_Switches): Do not deal with e128.
        * usage.adb (Write_Switch_Char): Do not print -gnate128 switch.
        * libgnat/i-cexten__128.ads: New file.

2020-10-22  Javier Miranda  <miranda@adacore.com>

        * einfo.ads (Has_Limited_View): New synthesized attribute.
        * einfo.adb (Has_Limited_View): New synthesized attribute.
        (Set_Limited_View): Complete assertion.
        * sem_ch10.ads (Is_Visible_Through_Renamings): Make this routine
        public to invoke it from Find_Expanded_Name and avoid reporting
        spurious errors on renamings of limited-with packages.
        (Load_Needed_Body): Moved to have this spec alphabetically
        ordered.
        * sem_ch10.adb (Is_Visible_Through_Renamings): Moved to library
        level.
        (Is_Limited_Withed_Unit): New subprogram.
        * sem_ch3.adb (Access_Type_Declaration): Adding protection to
        avoid reading attribute Entity() when not available.
        * sem_ch8.adb (Analyze_Package_Renaming): Report error on
        renamed package not visible through context clauses.
        (Find_Expanded_Name): Report error on renamed package not
        visible through context clauses; handle special case where the
        prefix is a renaming of a (now visible) shadow package.

2020-10-22  Ghjuvan Lacambre  <lacambre@adacore.com>

        * exp_prag.adb (Get_Launch_Kernel_Arg_Type): New function.
        (Build_Shared_Memory_Declaration): Use
        Get_Launch_Kernel_Arg_Type.
        (Build_Stream_Declaration): Use Get_Launch_Kernel_Arg_Type.
        * rtsfind.ads: Remove RO_IC_Unsigned_Long_Long.

2020-10-22  Arnaud Charlet  <charlet@adacore.com>

        * libgnat/s-imenne.adb, libgnat/s-imgrea.adb: Add assertions.

2020-10-22  Arnaud Charlet  <charlet@adacore.com>

        * libgnat/s-imgrea.adb (Set_Image_Real): Update annotations.

2020-10-22  Steve Baird  <baird@adacore.com>

        * aspects.ads: Introduce the subtype Nonoverridable_Aspect_Id,
        whose Static_Predicate reflects the list of nonoverridable
        aspects given in Ada RM 13.1.1(18.7).
        * sem_util.ads, sem_util.adb: Add two new visible subprograms,
        Check_Inherited_Nonoverridable_Aspects and Is_Confirming. The
        former is used to check the consistency of inherited
        nonoverridable aspects from multiple sources. The latter
        indicates whether two aspect specifications for a nonoverridable
        aspect are confirming. Because of compatibility concerns in
        compiling QGen, Is_Confirming always returns True if
        Relaxed_RM_Semantics (i.e., -gnatd.M) is specified.
        * sem_ch3.adb (Derived_Type_Declaration): Call new
        Check_Inherited_Nonoverridable_Aspects procedure if interface
        list is non-empty.
        * sem_ch9.adb (Check_Interfaces): Call new
        Check_Inherited_Nonoverridable_Aspects procedure if interface
        list is non-empty.
        * sem_ch13.adb (Analyze_Aspect_Specifications): When an explicit
        aspect specification overrides an inherited nonoverridable
        aspect, check that the explicit specification is confirming.

2020-10-22  Eric Botcazou  <ebotcazou@adacore.com>

        * freeze.ads (Check_Compile_Time_Size): Adjust size limit.

2020-10-22  Richard Kenner  <kenner@adacore.com>

        * sprint.adb (pg, po, ps): Use {Push,Pop}_Output.
        * treepr.adb (pl, pn): Likewise.

2020-10-22  Eric Botcazou  <ebotcazou@adacore.com>

        * doc/gnat_rm/implementation_advice.rst: Minor fix.
        * gnat_rm.texi: Regenerate.

2020-10-22  Steve Baird  <baird@adacore.com>

        * sem_util.adb (Is_Container_Aggregate): A new local predicates
        which indicates whether a given expression is a container
        aggregate. The implementation of this function is incomplete; in
        the unusual case of a record aggregate (i.e., not a container
        aggregate) of a type whose Aggregate aspect is specified, the
        function will incorrectly return True.
        (Immediate_Context_Implies_Is_Potentially_Unevaluated): Improve
        handling of aggregate components.
        (Is_Repeatedly_Evaluated): Test for container aggregate
        components along with existing test for array aggregate
        components.

2020-10-22  Eric Botcazou  <ebotcazou@adacore.com>

        * exp_fixd.adb (Fpt_Value): Fold if-then-else with identical arms.

2020-10-22  Ed Schonberg  <schonberg@adacore.com>

        * par-ch4.adb (P_Iterated_Component_Association): If the
        construct includes an iterator filter it corresponds to an
        Iterated_Element_Association, so build the proper node for it.
        * exp_aggr.adb (Expand_Container_Aggregate, Aggregate_Size): If
        the component is an Iterated_Element_Association, treat it as
        having a non-static size.

2020-10-22  Ghjuvan Lacambre  <lacambre@adacore.com>

        * scng.adb (Scan): Check if any letter of the token is
        uppercase.

2020-10-22  Justin Squirek  <squirek@adacore.com>

        * sem_util.adb (Accessibility_Level_Helper): Conversions to
        named access types get the level associated with the named
        access type.

2020-10-22  Eric Botcazou  <ebotcazou@adacore.com>

        * einfo.ads (Has_Constrained_Partial_View): Add "base type" marker.

2020-10-22  Gary Dismukes  <dismukes@adacore.com>

        * einfo.adb (Has_Constrained_Partial_View): Apply Base_Type to Id.
        * sem_res.adb (Resolve_Actuals.Check_Aliased_Parameter): Remove
        "not Is_Generic_Type" test and call
        Object_Type_Has_Constrained_Partial_View instead of
        Has_Constrained_Partial_View. Improve related error message to
        say "does not statically match" instead of just "does not
        match".

2020-10-22  Steve Baird  <baird@adacore.com>

        * sem_util.ads, sem_util.adb: Declare and implement a new
        predicate, Derivation_Too_Early_To_Inherit.  This function
        indicates whether a given derived type fails to inherit a given
        streaming-related attribute from its parent type because the
        declaration of the derived type precedes the corresponding
        attribute_definition_clause of the parent.
        * exp_tss.adb (Find_Inherited_TSS): Call
        Derivation_Too_Early_To_Inherit instead of unconditionally
        assuming that a parent type's streaming attribute is available
        for inheritance by an immediate descendant type.
        * sem_attr.adb (Stream_Attribute_Available): Call
        Derivation_Too_Early_To_Inherit instead of unconditionally
        assuming that a parent type's streaming attribute is available
        for inheritance by an immediate descendant type.
        * exp_attr.adb (Default_Streaming_Unavailable): A new predicate;
        given a type, indicates whether predefined (as opposed to
        user-defined) streaming operations for the type should be
        implemented by raising Program_Error.
        (Expand_N_Attribute_Reference): For each of the 4
        streaming-related attributes (i.e., Read, Write, Input, Output),
        after determining that no user-defined implementation is
        available (including a Stream_Convert pragma), call
        Default_Streaming_Unavailable; if that call returns True, then
        implement the streaming operation as "raise Program_Error;".

2020-10-22  Eric Botcazou  <ebotcazou@adacore.com>

        * checks.adb (Apply_Float_Conversion_Check): Saturate the bounds
        of the check to those of the base type of the expression.

2020-10-22  Justin Squirek  <squirek@adacore.com>

        * checks.adb (Apply_Accessibility_Check): Modify condition to
        avoid flawed optimization and use Get_Accessibility over
        Extra_Accessibility.
        * exp_attr.adb: Remove inclusion of Exp_Ch2.adb.
        * exp_ch2.adb, exp_ch2.ads (Param_Entity): Moved to sem_util.
        * exp_ch3.ads (Init_Proc_Level_Formal): New function.
        * exp_ch3.adb (Build_Init_Procedure): Add extra accessibility
        formal for init procs when the associated type is a limited
        record.
        (Build_Initialization_Call): Add condition to handle propagation
        of the new extra accessibility paramter actual needed for init
        procs.
        (Init_Proc_Level_Formal): Created to fetch a the extra
        accessibility parameter associated with init procs if one
        exists.
        * exp_ch4.adb (Build_Attribute_Reference): Modify static check
        to be dynamic.
        * exp_ch6.adb (Add_Cond_Expression_Extra_Actual): Move logic
        used to expand conditional expressions used as actuals for
        anonymous access formals.
        (Expand_Call_Helper): Remove extranious accessibility
        calculation logic.
        * exp_util.adb: Remove inclusion of Exp_Ch2.adb.
        * par-ch3.adb (P_Array_Type_Definition): Properly set
        Aliased_Present on access definitions
        * sem_attr.adb (Resolve_Attribute): Replace instances for
        Object_Access_Level with Static_Accessibility_Level.
        * sem_ch13.adb (Storage_Pool): Replace instances for
        Object_Access_Level with Static_Accessibility_Level.
        * sem_ch6.adb (Check_Return_Construct_Accessibility): Replace
        instances for Object_Access_Level with
        Static_Accessibility_Level.
        * sem_ch9.adb (Analyze_Requeue): Replace instances for
        Object_Access_Level with Static_Accessibility_Level.
        * sem_res.adb (Check_Aliased_Parameter,
        Check_Allocator_Discrim_Accessibility, Valid_Conversion):
        Replace instances for Object_Access_Level with
        Static_Accessibility_Level.
        * sem_util.adb, sem_util.ads (Accessibility_Level_Helper):
        Created to centralize calculation of accessibility levels.
        (Build_Component_Subtype): Replace instances for
        Object_Access_Level with Static_Accessibility_Level.
        (Defining_Entity): Add extra parameter to dictate whether an
        error is raised or empty is return in the case of an irrelevant
        N.
        (Dynamic_Accessibility_Level): Rewritten to use
        Accessibility_Level_Helper.
        (Is_View_Conversion): Check membership against Etype to capture
        nodes like explicit dereferences which have types but are not
        expanded names or identifers.
        (Object_Access_LeveL): Removed.
        (Param_Entity): Moved from sem_util.
        (Static_Accessibility_Level): Created as a replacement to
        Object_Access_Level, it also uses Accessibility_Level_Helper for
        its implementation.
        * snames.ads-tmpl: Added new name for extra accessibility
        parameter in init procs.

2020-10-22  Piotr Trojanek  <trojanek@adacore.com>

        * exp_prag.adb (Expand_Pragma_Contract_Cases,
        Expand_Pragma_Loop_Variant): Reuse Append_New_To.
        * sem_prag.adb (Analyze_Contract_Cases_In_Decl_Part): Fix typo.
        (Analyze_Pre_Post_Condition): Refactor repeated calls to
        Defining_Entity.

2020-10-22  Eric Botcazou  <ebotcazou@adacore.com>

        * doc/gnat_rm/implementation_defined_characteristics.rst: Minor
        fixes.
        * gnat_rm.texi: Regenerate.

2020-10-22  Piotr Trojanek  <trojanek@adacore.com>

        * sem_warn.adb (Check_Unused_Withs): Move local variables from
        to a nested procedure; Lunit is passed as a parameter to
        Check_System_Aux and its type is refined from Node_Id to
        Entity_Id; Cnode is now a constant.

2020-10-22  Patrick Bernardi  <bernardi@adacore.com>

        * libgnat/s-rident.ads (Profile_Info): Use a common profile
        definition for Jorvik and GNAT Extended Ravenscar, using the
        GNAT Extended Ravenscar definition.

2020-10-22  Eric Botcazou  <ebotcazou@adacore.com>

        * Makefile.rtl (64-bit platforms): Add GNATRTL_128BIT_PAIRS to
        the LIBGNAT_TARGET_PAIRS list and also GNATRTL_128BIT_OBJS to
        the EXTRA_GNATRTL_NONTASKING_OBJS list.

2020-10-22  Ghjuvan Lacambre  <lacambre@adacore.com>

        * sem_prag.adb (Process_Convention,
        Process_Import_Or_Interface): Fix error message.

2020-10-22  Ghjuvan Lacambre  <lacambre@adacore.com>

        * sem_ch13.adb (Make_Aitem_Pragma): Turn into function. This
        removes a side-effect on the Aitem variable.
        (Analyze_Aspect_Specifications): Handle Suppress and Unsuppress
        aspects differently from the Linker_Section aspect.
        (Ceck_Aspect_At_Freeze_Point): Don't expect Suppress/Unsuppress
        to be delayed anymore.

2020-10-22  Ed Schonberg  <schonberg@adacore.com>

        * sem_aggr.adb: (Resolve_Container_Aggregate): For an indexed
        container, verify that expressions and component associations
        are not both present.
        * exp_aggr.adb: Code reorganization, additional comments.
        (Expand_Container_Aggregate): Use Aggregate_Size for Iterated_
        Component_Associations for indexed aggregates. If present, the
        default value of the formal in the constructor function is used
        when the size of the aggregate cannot be determined statically.

2020-10-22  Eric Botcazou  <ebotcazou@adacore.com>

        * sem_attr.adb (Eval_Attribute): Fix oversight for Bit_Position.

2020-10-22  Ed Schonberg  <schonberg@adacore.com>

        * sem_util.ads, sem_util.adb (Check_Ambiguous_Aggregate): When a
        subprogram call is found to be ambiguous, check whether
        ambiguity is caused by an aggregate actual.  and indicate that
        it should carry a type qualification.
        * sem_ch4.adb (Traverse_Hoonyms, Try_Primitive_Operation): Call
        it.
        * sem_res.adb (Report_Ambiguous_Argument): Call it.

2020-10-22  Piotr Trojanek  <trojanek@adacore.com>

        * sem_warn.adb (Check_One_Unit): Avoid repeated calls by using a
        local variable Lunit; remove local constant Eitem, which was
        identical to Lunit.

2020-10-22  Alexandre Oliva  <oliva@adacore.com>

        * Makefile.rtl (LIBGNAT_TARGET_PAIRS) <x86*-vxworks*>: Select
        nolibm and wraplf variants like other vxworks ports.

2020-10-22  Martin Liska  <mliska@suse.cz>

        PR c/94722
        * gcc-interface/utils.c (handle_no_stack_protect_attribute):
        New.
        (handle_stack_protect_attribute): Add error message for a
        no_stack_protector function.

2020-10-22  Alexandre Oliva  <oliva@adacore.com>

        * Makefile.rtl (LIBGNAT_TARGET_PAIRS) <lynxos178>: Rely on
        Aux_Long_Float for all real types.

2020-10-22  Alexandre Oliva  <oliva@adacore.com>

        * Makefile.rtl (LIBGNAT_TARGET_PAIRS): Use Long Float-based
        variant of Aux_Short_Float and Aux_Float on vxworks targets.
        * libgnat/a-nashfl__wraplf.ads: New.
        * libgnat/a-nuaufl__wraplf.ads: New.

2020-10-22  Rainer Orth  <ro@CeBiTec.Uni-Bielefeld.DE>

        * Makefile.rtl (LIBGNAT_TARGET_PAIRS) <sparc*-sun-solaris>:
        Use wraplf version of a-nallfl.

2020-10-22  Alexandre Oliva  <oliva@adacore.com>

        * Makefile.rtl (LIBGNAT_TARGET_PAIRS): Use
        a-nallfl__wraplf.ads on aarch64-* and ppc*-linux-gnu targets.
        * libgnat/a-nallfl__wraplf.ads: New.

2020-10-22  Jan Hubicka  <hubicka@ucw.cz>

        * gcc-interface/trans.c: Include tree-nested.h
        (walk_nesting_tree): Update for new nested function info.

2020-10-21  Eric Botcazou  <ebotcazou@adacore.com>

        * Makefile.rtl (GNATRTL_NONTASKING_OBJS): Add a-llltio, a-lllwti,
        a-lllzti and remove a-timoau, a-wtmoau and a-ztmoau.
        (GNATRTL_128BIT_PAIRS): Add a-tiinio.adb, a-timoio.adb, a-wtinio.adb,
        a-wtmoio.adb, a-ztinio.adb and a-ztmoio.adb.
        * impunit.adb (Non_Imp_File_Names_95): Add a-llltio, a-lllwti and
        a-lllzti.
        * krunch.ads: Document trick for Ada.Long_Long_Long_Integer_*_IO.
        * krunch.adb (Krunch): Add trick for Ada.Long_Long_Long_Integer_*_IO.
        * libgnat/a-llltio.ads: Instantiate Ada.Text_IO.Integer_IO.
        * libgnat/a-lllwti.ads: Instantiate Ada.Wide_Text_IO.Integer_IO.
        * libgnat/a-lllzti.ads: Instantiate Ada.Wide_Wide_Text_IO.Integer_IO.
        * libgnat/a-tigeau.ads (Load_Integer): New procedure.
        * libgnat/a-tigeau.adb (Load_Integer): Likewise.
        * libgnat/a-tiinau.ads, libgnat/a-tiinau.adb: Change to generic
        package.
        * libgnat/a-tiinio.adb: Instantiate it.
        * libgnat/a-tiinio__128.adb: Likewise.
        * libgnat/a-timoau.ads, libgnat/a-timoau.adb: Change to generic
        package.
        * libgnat/a-timoio.adb: Instantiate it.
        * libgnat/a-timoio__128.adb: Likewise.
        * libgnat/a-wtgeau.ads (Load_Integer): New procedure.
        * libgnat/a-wtgeau.adb (Load_Integer): Likewise.
        * libgnat/a-wtinau.ads, libgnat/a-wtinau.adb: Change to generic
        package.
        * libgnat/a-wtinio.adb: Instantiate it.
        * libgnat/a-wtinio__128.adb: Likewise.
        * libgnat/a-wtmoau.ads, libgnat/a-wtmoau.adb: Change to generic
        package.
        * libgnat/a-wtmoio.adb: Instantiate it.
        * libgnat/a-wtmoio__128.adb: Likewise.
        * libgnat/a-ztgeau.ads (Load_Integer): New procedure.
        * libgnat/a-ztgeau.adb (Load_Integer): Likewise.
        * libgnat/a-ztinau.ads, libgnat/a-ztinau.adb: Change to generic
        package.
        * libgnat/a-ztinio.adb: Instantiate it.
        * libgnat/a-ztinio__128.adb: Likewise.
        * libgnat/a-ztmoau.ads, libgnat/a-ztmoau.adb: Change to generic
        package.
        * libgnat/a-ztmoio.adb: Instantiate it.
        * libgnat/a-ztmoio__128.adb: Likewise.

2020-10-21  Eric Botcazou  <ebotcazou@adacore.com>

        * sem_ch12.adb (Freeze_Subprogram_Body): Do not move the freeze
        node of the package body enclosing the instance when its parent
        is in the same declarative part as the freeze node of the parent.

2020-10-21  Steve Baird  <baird@adacore.com>

        * exp_ch6.adb (Insert_Post_Call_Actions): When a function's
        result type requires finalization and we decide to make copy of
        a call to the function and subsequently refer only to the copy,
        then don't forget to finalize the original function result
        object.

2020-10-21  Eric Botcazou  <ebotcazou@adacore.com>

        * Makefile.rtl (GNATRTL_NONTASKING_OBJS): Add s-widint,
        s-widthi, s-widuns, s-widuns.
        (GNATRTL_128BIT_OBJS): Add s-imglllb, s-imgllli, s-imglllu, s-imglllw,
        s-valllli, s-vallllu, s-widllli, s-widlllu.
        * exp_imgv.adb (Expand_Image_Attribute): Deal with 128-bit types.
        (Expand_Value_Attribute): Likewise.
        (Expand_Width_Attribute): Likewise.
        * exp_put_image.adb (Build_Elementary_Put_Image_Call): Likewise.
        * krunch.adb (Krunch): Deal with s-img, s-val and s-wid prefixes.
        * rtsfind.ads (RTU_Id): Add System_Img_LLLI, System_Img_LLLU,
        System_Val_LLLI, System_Val_LLL, System_Wid_Int, System_Wid_LLLI,
        System_Wid_LLLU, System_Wid_Uns).
        (RE_Id): Add RE_Image_Long_Long_Long_Integer,
        RE_Image_Long_Long_Long_Unsigned,
        RE_Put_Image_Long_Long_Long_Integer,
        RE_Put_Image_Long_Long_Long_Unsigned,
        RE_Long_Long_Long_Unsigned, RE_Value_Long_Long_Long_Integer,
        RE_Value_Long_Long_Long_Unsigned, RE_Width_Integer,
        RE_Width_Long_Long_Long_Integer, RE_Width_Long_Long_Long_Unsigned,
        RE_Width_Unsigned, RE_Image_Long_Long_Long_Integer,
        RE_Image_Long_Long_Long_Unsigned, RE_Put_Image_Long_Long_Long_Integer,
        RE_Put_Image_Long_Long_Long_Unsigned, RE_Long_Long_Long_Unsigned,
        RE_Value_Long_Long_Long_Integer, RE_Value_Long_Long_Long_Unsigned,
        RE_Width_Integer, RE_Width_Long_Long_Long_Integer,
        RE_Width_Long_Long_Long_Unsigned, RE_Width_Unsigned.
        * libgnat/s-imageb.ads, libgnat/s-imageb.adb: New generic
        package.
        * libgnat/s-imagei.ads, libgnat/s-imagei.adb: Likewise.
        * libgnat/s-imageu.ads, libgnat/s-imageu.adb: Likewise.
        * libgnat/s-imagew.ads, libgnat/s-imagew.adb: Likewise.
        * libgnat/s-imgbiu.ads: Instantiate System.Image_B.
        * libgnat/s-imgbiu.adb: Add pragma No_Body.
        * libgnat/s-imgint.ads: Instantiate System.Image_I.
        * libgnat/s-imgint.adb: Add pragma No_Body.
        * libgnat/s-imgllb.ads: Instantiate System.Image_B.
        * libgnat/s-imgllb.adb: Add pragma No_Body0
        * libgnat/s-imglli.ads: Instantiate System.Image_I.
        * libgnat/s-imglli.adb: Add pragma No_Body.
        * libgnat/s-imglllb.ads: Instantiate System.Image_B.
        * libgnat/s-imgllli.ads: Instantiate System.Image_I.
        * libgnat/s-imglllu.ads: Instantiate System.Image_U.
        * libgnat/s-imglllw.ads: Instantiate System.Image_W.
        * libgnat/s-imgllu.ads: Instantiate System.Image_U.
        * libgnat/s-imgllu.adb: Add pragma No_Body.
        * libgnat/s-imgllw.ads: Instantiate System.Image_W.
        * libgnat/s-imgllw.adb: Add pragma No_Body.
        * libgnat/s-imgrea.adb: Remove clauses for System.Unsigned_Types.
        * libgnat/s-imguns.ads: Instantiate System.Image_U.
        * libgnat/s-imguns.adb: Add pragma No_Body.
        * libgnat/s-imgwiu.ads: Instantiate System.Image_W.
        * libgnat/s-imgwiu.adb: Add pragma No_Body.
        * libgnat/s-putima.ads (Long_Long_Long_Unsigned): New subtype.
        (Put_Image_Long_Long_Long_Unsigned): New procedure.
        * libgnat/s-putima.adb (Small): Rename to Integer_Images.
        (Large): Rename to LL_Integer_Images.
        (LLL_Integer_Images): New instantiation.
        (Put_Image_Long_Long_Long_Integer): New renaming.
        (Put_Image_Long_Long_Long_Unsigned): Likewise.
        * libgnat/s-valint.ads: Instantiate System.Value_I.
        * libgnat/s-valint.adb: Add pragma No_Body.
        * libgnat/s-vallli.ads: Instantiate System.Value_I.
        * libgnat/s-vallli.adb: Add pragma No_Body.
        * libgnat/s-valllli.ads: Instantiate System.Value_I.
        * libgnat/s-vallllu.ads: Instantiate System.Value_U.
        * libgnat/s-valllu.ads: Instantiate System.Value_U.
        * libgnat/s-valllu.adb: Add pragma No_Body.
        * libgnat/s-valuei.ads, libgnat/s-valuei.adb: New generic
        package.
        * libgnat/s-valueu.ads, libgnat/s-valueu.adb: Likewise.
        * libgnat/s-valuns.ads: Instantiate System.Value_U.
        * libgnat/s-valuns.adb: Add pragma No_Body.
        * libgnat/s-widint.ads: Instantiate System.Width_I.
        * libgnat/s-widlli.ads: Likewise.
        * libgnat/s-widlli.adb: Add pragma No_Body.
        * libgnat/s-widllli.ads: Instantiate System.Width_I.
        * libgnat/s-widlllu.ads: Instantiate System.Width_U.
        * libgnat/s-widllu.ads: Likewise.
        * libgnat/s-widllu.adb: Add pragma No_Body.
        * libgnat/s-widthi.ads, libgnat/s-widthi.adb: New generic
        package.
        * libgnat/s-widthu.ads, libgnat/s-widthu.adb: Likewise.
        * libgnat/s-widuns.ads: Instantiate System.Width_U.

2020-10-21  Eric Botcazou  <ebotcazou@adacore.com>

        * set_targ.adb (DTN): Fix oversight.
        (Read_Target_Dependent_Values): Do not error out on missing
        Long_Long_Long_Size entry and reuse Long_Long_Size for it.

2020-10-21  Piotr Trojanek  <trojanek@adacore.com>

        * exp_aggr.adb (Gen_Loop): Analyze copy of the expression in the
        scope of the implicit loop with name of the index parameter
        visible.

2020-10-21  Eric Botcazou  <ebotcazou@adacore.com>

        * Makefile.rtl (GNATRTL_128BIT_PAIRS): New variable.
        (GNATRTL_128BIT_OBJS): Likewise.
        (Windows): In 64-bit mode, add the former to LIBGNAT_TARGET_PAIRS and
        the latter to EXTRA_GNATRTL_NONTASKING_OBJS.
        (x86_64/linux): Likewise, but unconditionally.
        (GNATRTL_NONTASKING_OBJS): Add s-aridou, s-exponn, s-expont,
        s-exponu.
        * ada_get_targ.adb (Get_Long_Long_Long_Size): New function.
        * checks.adb (Apply_Arithmetic_Overflow_Strict): Use Integer_Type_For
        to find an appropriate integer type; if it does not exist and the max
        integer size is larger than 64, use the 128-bit arithmetic routines.
        * cstand.adb (Create_Standard): Build Standard_Long_Long_Long_Integer
        and its base type.  Use it for Etype of Any_Integer, Any_Modular and
        Any_Numeric.  Use its size for Build Standard_Long_Long_Long_Unsigned
        and Universal_Integer.
        (Print_Standard): Print Long_Long_Long_Integer.
        * exp_attr.adb (Expand_N_Attribute_Reference) <Attribute_Mod>: Adjust
        comment.
        * exp_ch3.adb (Simple_Init_Initialize_Scalars_Type): Deal with 128-bit
        types.
        * exp_ch4.adb (Expand_Array_Comparison): Likewise.
        (Expand_N_Op_Expon): Likewise.
        (Narrow_Large_Operation): Likewise.
        * exp_dbug.adb (Bounds_Match_Size): Handle 128-bit size.
        * exp_fixd.adb (Build_Double_Divide_Code): Use RE_Double_Divide64.
        * exp_intr.adb (Expand_Binary_Operator_Call): Handle 128-bit size.
        * exp_pakd.ads (E_Array): Extend range to 127.
        (Bits_Id): Fill in up to 127.
        (Get_Id): Likewise.
        (GetU_Id): Likewise.
        (Set_Id): Likewise.
        (SetU_Id): Likewise.
        * exp_pakd.adb (Revert_Storage_Order): Handle 128-bit size.
        * exp_util.adb (Integer_Type_For): Likewise.
        (Small_Integer_Type_For): Likewise.
        * fname.adb (Is_Predefined_File_Name): Do not return False for names
        larger than 12 characters if they start with "s-".
        * freeze.adb (Adjust_Esize_For_Alignment): Change the maximum value
        to System_Max_Integer_Size.
        (Check_Suspicious_Modulus): Adjust comment.
        (Freeze_Entity): Likewise.
        * get_targ.ads (Get_Long_Long_Long_Size): New function.
        * get_targ.adb (Get_Long_Long_Long_Size): Likewise.
        (Width_From_Size): Deal with 128-bit size.
        * gnat1drv.adb (Adjust_Global_Switches): Deal with 128-bit types.
        * impunit.adb (Get_Kind_Of_File): Bump buffer size.  Accept files with
        13 characters if they start with 's'.  Compare slice of Buffer.
        (Not_Impl_Defined_Unit): Accept files with 13 characters if they start
        with 's'.
        * krunch.ads: Document length for 128-bit support units.
        * krunch.adb (Krunch): Set length to 9 for 128-bit support units.
        * layout.adb (Layout_Type): Use System_Max_Integer_Size as alignment
        limit.
        * rtsfind.ads (RTU_Id): Add System_Arith_128,
        System_Compare_Array_Signed_128, System_Compare_Array_Unsigned_128,
        System_Exn_LLLI, System_Exp_LLLU, System_Pack_[65..127].
        (RE_Id): Add RE_Integer_128, RE_Unsigned_128, RE_Add_With_Ovflo_Check128
        RE_Multiply_With_Ovflo_Check128, RE_Subtract_With_Ovflo_Check128,
        RE_Bswap_128, RE_Compare_Array_S128, RE_Compare_Array_U128,
        RE_Exn_Long_Long_Long_Integer, RE_Exp_Long_Long_Long_Integer,
        RE_Exp_Long_Long_Long_Unsigned, RE_Bits_[65-127], RE_Get_[65-127],
        RE_Set_[65-127], RE_IS_Is16, RE_IS_Iu16, RE_Integer_128 and
        RE_Unsigned_128.  Rename RE_Add_With_Ovflo_Check, RE_Double_Divide,
        RE_Multiply_With_Ovflo_Check, RE_Scaled_Divide and
        RE_Subtract_With_Ovflo_Check.  Remove RE_IS_Iz1, RE_IS_Iz2, RE_IS_Iz4,
        RE_IS_Iz8, RE_Long_Unsigned, RE_Short_Unsigned, RE_Short_Short_Unsigned
        (RE_Unit_Table): Likewise.
        * sem_aux.adb (Corresponding_Unsigned_Type): Deal with a size equal to
        that of Standard_Long_Long_Long_Integer.
        (First_Subtype): Deal with Standard_Long_Long_Long_Integer'Base.
        * sem_ch13.adb (Analyze_Attribute_Definition_Clause) <Attribute_Size>:
        Check the size against powers of 2 and System_Max_Integer_Size for
        objects as well.
        (Set_Enum_Esize): Deal with 128-bit bounds.
        * sem_ch3.adb (Set_Modular_Size): Handle 128-bit size.
        (Modular_Type_Declaration): Deal with 128-bit types.
        (Signed_Integer_Type_Declaration): Support derivation from
        Standard_Long_Long_Long_Integer.
        * sem_ch4.adb (Analyze_Mod): Handle 128-bit modulus.
        * sem_intr.adb: Add with and use clauses for Ttypes.
        (Check_Shift): Handle 128-bit size and modulus.
        * sem_prag.adb (Analyze_Pragma) <Pragma_Initialize_Scalars>: Deal
        with Signed_128 and Unsigned_128.
        (Analyze_Integer_Value): Handle 128-bit size.
        * sem_util.ads (Addressable): Adjust description.
        * sem_util.adb (Addressable): Return true for 128 if the system
        supports 128 bits.
        (Set_Invalid_Binder_Values): Deal with Signed_128 and Unsigned_128.
        * set_targ.ads (Long_Long_Long_Size): New variable.
        * set_targ.adb (S_Long_Long_Long_Size): New constant.
        (DTN): Add entry for S_Long_Long_Long_Size.
        (DTV): Add entry for Long_Long_Long_Size.
        (Set_Targ): Set Long_Long_Long_Size.
        * snames.ads-tmpl (Name_Max_Integer_Size): New attribute name.
        (Name_Signed_128): New scalar name.
        (Name_Unsigned_128): Likewise.
        (Scalar_Id): Adjust.
        (Integer_Scalar_Id): Likewise.
        (Attribute_Id): Add Attribute_Max_Integer_Size.
        * stand.ads (Standard_Entity_Type): Add S_Long_Long_Long_Integer.
        (Standard_Long_Long_Long_Integer): New renaming.
        (Universal_Integer): Adjust description.
        (Standard_Long_Long_Long_Unsigned): New variable.
        * switch-c.adb (Scan_Front_End_Switches): Deal with -gnate128.
        * ttypes.ads (Standard_Long_Long_Long_Integer_Size): New variable.
        (Standard_Long_Long_Long_Integer_Width): Likewise.
        (System_Max_Integer_Size): Turn into variable.
        (System_Max_Binary_Modulus_Power): Likewise.
        * uintp.ads (Uint_127): New constant.
        * uintp.adb (UI_Power_2): Extednd to 128.
        (UI_Power_10): Likewise.
        (UI_Expon): Deal with exponent up to 128 specially.
        * usage.adb (Write_Switch_Char): Print -gnate128 switch.
        * libgnat/a-tifiio.adb (Put_Scaled): Call Scaled_Divide64.
        * libgnat/interfac__2020.ads (Integer_128): New integer type.
        (Unsigned_128): New modular type.
        (Shift_Left, Shift_Right, Shift_Right_Arithmetic, Rotate_Left,
        Rotate_Right): New intrinsic functions operating on it.
        * libgnat/s-aridou.ads, libgnat/s-aridou.adb: New generic
        package.
        * libgnat/s-arit64.ads, libgnat/s-arit64.adb: Instantiate
        System.Arithmetic_Double.
        * libgnat/s-arit128.ads, libgnat/s-arit128.adb: Likewise.
        * libgnat/s-bytswa.ads: Add with clause for Interfaces, use subtypes
        of unsigned types defined in Interfaces and add Bswap_128.
        * libgnat/s-casi128.ads, libgnat/s-casi128.adb: New package.
        * libgnat/s-caun128.ads, libgnat/s-caun128.adb: Likewise.
        * libgnat/s-exnint.ads: Instantiate System.Exponn.
        * libgnat/s-exnint.adb: Add pragma No_Body.
        * libgnat/s-exnlli.ads: Instantiate System.Exponn.
        * libgnat/s-exnlli.adb: Add pragma No_Body.
        * libgnat/s-exnllli.ads: Instantiate System.Exponn.
        * libgnat/s-expint.ads: Likewise.
        * libgnat/s-expint.adb: Add pragma No_Body.
        * libgnat/s-explli.ads: Instantiate System.Exponn.
        * libgnat/s-explli.adb: Add pragma No_Body.
        * libgnat/s-expllli.ads: Instantiate System.Exponn.
        * libgnat/s-explllu.ads: Instantiate System.Exponu.
        * libgnat/s-expllu.ads: Likewise.
        * libgnat/s-expllu.adb: Add pragma No_Body.
        * libgnat/s-exponn.ads, libgnat/s-exponn.adb: New generic
        function.
        * libgnat/s-expont.ads, libgnat/s-expont.adb: Likewise.
        * libgnat/s-exponu.ads, libgnat/s-exponu.adb: Likewise.
        * libgnat/s-expuns.ads, libgnat/s-expuns.adb: Likewise.
        * libgnat/s-pack65.ads, libgnat/s-pack65.adb: New package.
        * libgnat/s-pack66.ads, libgnat/s-pack66.adb: New package.
        * libgnat/s-pack67.ads, libgnat/s-pack67.adb: New package.
        * libgnat/s-pack68.ads, libgnat/s-pack68.adb: New package.
        * libgnat/s-pack69.ads, libgnat/s-pack69.adb: New package.
        * libgnat/s-pack70.ads, libgnat/s-pack70.adb: New package.
        * libgnat/s-pack71.ads, libgnat/s-pack71.adb: New package.
        * libgnat/s-pack72.ads, libgnat/s-pack72.adb: New package.
        * libgnat/s-pack73.ads, libgnat/s-pack73.adb: New package.
        * libgnat/s-pack74.ads, libgnat/s-pack74.adb: New package.
        * libgnat/s-pack75.ads, libgnat/s-pack75.adb: New package.
        * libgnat/s-pack76.ads, libgnat/s-pack76.adb: New package.
        * libgnat/s-pack77.ads, libgnat/s-pack77.adb: New package.
        * libgnat/s-pack78.ads, libgnat/s-pack78.adb: New package.
        * libgnat/s-pack79.ads, libgnat/s-pack79.adb: New package.
        * libgnat/s-pack80.ads, libgnat/s-pack80.adb: New package.
        * libgnat/s-pack81.ads, libgnat/s-pack81.adb: New package.
        * libgnat/s-pack82.ads, libgnat/s-pack82.adb: New package.
        * libgnat/s-pack83.ads, libgnat/s-pack83.adb: New package.
        * libgnat/s-pack84.ads, libgnat/s-pack84.adb: New package.
        * libgnat/s-pack85.ads, libgnat/s-pack85.adb: New package.
        * libgnat/s-pack86.ads, libgnat/s-pack86.adb: New package.
        * libgnat/s-pack87.ads, libgnat/s-pack87.adb: New package.
        * libgnat/s-pack88.ads, libgnat/s-pack88.adb: New package.
        * libgnat/s-pack89.ads, libgnat/s-pack89.adb: New package.
        * libgnat/s-pack90.ads, libgnat/s-pack90.adb: New package.
        * libgnat/s-pack91.ads, libgnat/s-pack91.adb: New package.
        * libgnat/s-pack92.ads, libgnat/s-pack92.adb: New package.
        * libgnat/s-pack93.ads, libgnat/s-pack93.adb: New package.
        * libgnat/s-pack94.ads, libgnat/s-pack94.adb: New package.
        * libgnat/s-pack95.ads, libgnat/s-pack95.adb: New package.
        * libgnat/s-pack96.ads, libgnat/s-pack96.adb: New package.
        * libgnat/s-pack97.ads, libgnat/s-pack97.adb: New package.
        * libgnat/s-pack98.ads, libgnat/s-pack98.adb: New package.
        * libgnat/s-pack99.ads, libgnat/s-pack99.adb: New package.
        * libgnat/s-pack100.ads, libgnat/s-pack100.adb: New package.
        * libgnat/s-pack101.ads, libgnat/s-pack101.adb: New package.
        * libgnat/s-pack102.ads, libgnat/s-pack102.adb: New package.
        * libgnat/s-pack103.ads, libgnat/s-pack103.adb: New package.
        * libgnat/s-pack104.ads, libgnat/s-pack104.adb: New package.
        * libgnat/s-pack105.ads, libgnat/s-pack105.adb: New package.
        * libgnat/s-pack106.ads, libgnat/s-pack106.adb: New package.
        * libgnat/s-pack107.ads, libgnat/s-pack107.adb: New package.
        * libgnat/s-pack108.ads, libgnat/s-pack108.adb: New package.
        * libgnat/s-pack109.ads, libgnat/s-pack109.adb: New package.
        * libgnat/s-pack110.ads, libgnat/s-pack110.adb: New package.
        * libgnat/s-pack111.ads, libgnat/s-pack111.adb: New package.
        * libgnat/s-pack112.ads, libgnat/s-pack112.adb: New package.
        * libgnat/s-pack113.ads, libgnat/s-pack113.adb: New package.
        * libgnat/s-pack114.ads, libgnat/s-pack114.adb: New package.
        * libgnat/s-pack115.ads, libgnat/s-pack115.adb: New package.
        * libgnat/s-pack116.ads, libgnat/s-pack116.adb: New package.
        * libgnat/s-pack117.ads, libgnat/s-pack117.adb: New package.
        * libgnat/s-pack118.ads, libgnat/s-pack118.adb: New package.
        * libgnat/s-pack119.ads, libgnat/s-pack119.adb: New package.
        * libgnat/s-pack120.ads, libgnat/s-pack120.adb: New package.
        * libgnat/s-pack121.ads, libgnat/s-pack121.adb: New package.
        * libgnat/s-pack122.ads, libgnat/s-pack122.adb: New package.
        * libgnat/s-pack123.ads, libgnat/s-pack123.adb: New package.
        * libgnat/s-pack124.ads, libgnat/s-pack124.adb: New package.
        * libgnat/s-pack125.ads, libgnat/s-pack125.adb: New package.
        * libgnat/s-pack126.ads, libgnat/s-pack126.adb: New package.
        * libgnat/s-pack127.ads, libgnat/s-pack127.adb: New package.
        * libgnat/s-rannum.ads (Random): New function returning 128-bit.
        * libgnat/s-rannum.adb (Random): Implement it.
        * libgnat/s-scaval.ads: Add with clause for Interfaces, use subtypes
        of unsigned types defined in Interfaces.
        * libgnat/s-scaval.adb: Add use clause for Interfaces.
        * libgnat/s-scaval__128.ads, libgnat/s-scaval__128.adb: New
        package.
        * libgnat/s-unstyp.ads (Long_Long_Long_Unsigned): New modular type.
        (Shift_Left, Shift_Right, Shift_Right_Arithmetic, Rotate_Left,
        Rotate_Right): New intrinsic functions operating on it.

2020-10-21  Eric Botcazou  <ebotcazou@adacore.com>

        * doc/gnat_rm/implementation_defined_characteristics.rst: Add
        Long_Long_Long_Integer to the list of predefined integer types.
        * gnat_rm.texi: Regenerate.

2020-10-21  Yannick Moy  <moy@adacore.com>

        * ada_get_targ.adb (Width_From_Size): Add case for 128 bits.
        Reorder declarations in the same order as get_targ.adb to
        facilitate diffs.

2020-10-21  Piotr Trojanek  <trojanek@adacore.com>

        * exp_aggr.adb (Expand_N_Aggregate): Refactor repeated calls to
        Etype (N).
        (Build_Array_Aggr_Code): Fix whitespace.

2020-10-21  Dmitriy Anisimkov  <anisimko@adacore.com>

        * adaint.c (__gnat_file_time): Use regular arithmetic instead of
        __builtin_*_overflow routines if GCC version 4 or less and
        compiler is g++.

2020-10-21  Piotr Trojanek  <trojanek@adacore.com>

        * sem_aggr.adb (Resolve_Array_Aggregate): Use Choice_List, which
        internally calls either Choice or Discrete_Choices, depending on
        the context.

2020-10-21  Piotr Trojanek  <trojanek@adacore.com>

        * sem_aggr.adb (Resolve_Iterated_Component_Association): Use
        existing defining identifier for index parameter.

2020-10-21  Javier Miranda  <miranda@adacore.com>

        * exp_ch9.adb (Build_Task_Activation_Call): Do not generate a
        call to activate tasks if we are within the scope of a protected
        type and pragma Detect_Blocking is active.

2020-10-21  Liaiss Merzougue  <merzougue@adacore.com>

        * libgnat/s-carsi8.adb (Compare_Array_S8): Add pragma Assert to
        avoid warning concerning Left_Len and RighLen value regarding
        Bytes_Compared_As_Words.
        * libgnat/s-carun8.adb (Compare_Array_U8): Likewise.
        * libgnat/s-geveop.adb (Binary_Operation, Unary_Operation): Add
        pragma Assert concerning divide by 0 warning.
        * libgnat/s-imgcha.adb (Image_Character): Code update to prevent
        constant operation warning.
        (Image_Character): Add pragma Assert concerning the unchecked
        String size.
        * libgnat/s-imgdec.adb
        (Round): Upate loop code to prevent warning concerning
        Digs'First access.
        (Round): Add pragma assert.
        (Set): Add pragma Assert for the unchecked string size.
        (Set_Digits): Add pragma Assert for the input range.
        (Set_Decimal_Digits): Add pragma Assert.
        (Set_Blank_And_Sign): Add pragma Assert for the input range.
        * libgnat/s-arit64.adb (DoubleDivide): Add pragma Assert
        concerning Du /= 0.
        (Multiply_With_Ovflo_Check): Add pragma Annotate to avoid
        warning concerning unsigned -> signed conversion.
        * libgnat/s-imguns.adb (Set_Image_Unsigned): Add pragma Assert
        to prevent overflow check warning.  Add pragma Assert for
        controlling S'First = 1.
        * libgnat/s-imgrea.adb (Image_Floating_Point, Set, Set_Digs,
        Set_Special_Fill, Convert_Integer): Add pragma Annotate to
        prevent overflow check warning.
        (Set_Image_Real): Add pragma Annotate to avoid dead code warning
        on float check. Add pragma Assert to prevent overflow check
        warning.
        * libgnat/s-imgwiu.adb (Set_Digits, Set_Image_Width_Unsigned):
        Add pragma assert to prevent overflow check warning.
        * libgnat/s-imgllu.adb (Set_Image_Long_Long_Unsigned): Add
        pragma assert to prevent overflow check warning.
        * libgnat/s-imgint.adb (Set_Digits): Add Assert for input
        constraint and to prevent overflow check warning, create
        Non_Positive subtype, and change the T parameter as Non_Positive
        instead Integer.
        (Set_Image_Integer): Add pragma assert to prevent overflow check
        warning.
        * libgnat/s-imglli.adb (Set_Digits): Add Assert for input
        constraint and to prevent overflow check warning, create
        Non_Positive subtype, and change the T parameter as Non_Positive
        instead Integer.
        (Set_Image_Long_Long_Integer): Add pragma assert to prevent
        overflow check warning.
        * libgnat/s-fatgen.adb (Decompose, Pred, Succ): Add pragma
        Annotate to prevent dead code due to invalid float check.
        * libgnat/s-imenne.adb (Image_Enumeration_8,
        Image_Enumeration_16, Image_Enumeration_32): Add pragma Assert
        to prevent overflow check warning.  Add Names_Index subtype for
        restricting Index_table content.

2020-10-21  Gary Dismukes  <dismukes@adacore.com>

        * exp_ch6.adb (Insert_Post_Call_Actions): Test for
        N_Explicit_Dereference as part of the existing test for function
        calls.

2020-10-21  Eric Botcazou  <ebotcazou@adacore.com>

        * freeze.adb (Check_Strict_Alignment): Do not set the flag for
        a bit-packed array type, even if it is a by-reference type.

2020-10-21  Dmitriy Anisimkov  <anisimko@adacore.com>

        * adaint.c (__gnat_file_time): New routine.
        (__gnat_copy_attribs): Copy timestamps in nanoseconds.
        * libgnat/a-direct.adb (C_Modification_Time): Bind to
        __gnat_file_time.
        (Modification_Time): Call to C_Modification_Time.

2020-10-21  Piotr Trojanek  <trojanek@adacore.com>

        * sem_aggr.adb (Resolve_Iterated_Component_Association):
        Expression's copy and now has the same parent as the original
        expression.
        (Resolve_Array_Aggregate): Add ??? comment about a still
        existing minor issue that led to discovery of the above crash.

2020-10-21  Javier Miranda  <miranda@adacore.com>

        * sem_ch12.adb (Install_Parents_Of_Generic_Context): Simplify
        functionality; collect and install parents of generic child
        package.
        (Remove_Parents_Of_Generic_Context): Code cleanup.
        (Instantiate_Package_Body): Hide parents of generic context from
        visibility before installing the parent instance; restore their
        visibility when the instance is analyzed

2020-10-21  Doug Rupp  <rupp@adacore.com>

        * libgnarl/s-osinte__lynxos178e.ads: Remove -mthreads switch.

2020-10-21  Patrick Bernardi  <bernardi@adacore.com>

        * env.c (__gnat_setenv): call setenv for VxWorks 7 kernel mode.
        (__gnat_environ): envGet takes an int instead of a NULL pointer.
        (__gnat_unsetenv): call unsetenv for VxWorks 7 kernel mode.
        (__gnat_clearenv): use __gnat_unsetenv to clear environment
        variables.

2020-10-21  Eric Botcazou  <ebotcazou@adacore.com>

        * sem_ch12.adb (Freeze_Subprogram_Body): Call
        Package_Freeze_Node to retrieve the freeze node for the
        enclosing body of the generic.

2020-10-21  Justin Squirek  <squirek@adacore.com>

        * exp_ch6.adb (Expand_Call_Helper): Modify calls to
        Add_Extra_Actual to use Extra_Accessibility instead of
        Get_Accessibility for the EF parameter.

2020-10-21  Piotr Trojanek  <trojanek@adacore.com>

        * exp_ch6.adb (Expand_Actuals): Whitespace cleanup.
        * sem_ch6.adb (Analyze_Subprogram_Body_Helper): Make minimum
        accessibility a constant object.

2020-10-21  Patrick Bernardi  <bernardi@adacore.com>

        * env.c (__gnat_environ): For VxWorks kernel simply return the
        result of the envGet call. Do this for VxWorks 6 and 7 as they
        both support the same API.

2020-10-21  Ghjuvan Lacambre  <lacambre@adacore.com>

        * exp_ch7.adb (Build_Finalizer): Disable warnings on referenced
        entity.

2020-10-21  Piotr Trojanek  <trojanek@adacore.com>

        * einfo.ads, sem_ch3.adb, sem_util.adb: Fix comments.

2020-10-21  Javier Miranda  <miranda@adacore.com>

        * sem_ch3.adb (Build_Derived_Type): Propagate convention of
        class-wide parent.

2020-10-21  Claire Dross  <dross@adacore.com>

        * libgnat/a-cofove.adb (Copy): Add explanation in case of
        Capacity_Error.
        (Insert_Space): Raise Capacity_Error if the new length is
        greater than the capacity.
        (Reserve_Capacity): Raise Capacity_Error instead of
        Constraint_Error.

2020-10-20  Piotr Trojanek  <trojanek@adacore.com>

        * sem_ch3.adb (Constrain_Decimal, Constrain_Enumeration,
        Constrain_Float, Constrain_Integer, Constrain_Ordinary_Fixed):
        Refine parameter type from Node_Id to Entity_Id.

2020-10-20  Piotr Trojanek  <trojanek@adacore.com>

        * sprint.adb (po): Set Dump_Freeze_Null to False; align colons.
        (ps): Likewise.

2020-10-20  Ed Schonberg  <schonberg@adacore.com>

        * sinfo.ads, sinfo.adb: The flag Box_Present can appear in
        Iterated_Element_Association nodes.
        * sem_aggr.adb (Resolve_Aggregate): Call
        Resolve_Container_Aggregate when type of context has
        corresponding aspect.
        * sem_type.adb (Covers): In Ada_2020 an aggregate is compatible
        with a type that carries the corresponding aspect.
        * exp_ch3.adb (Make_Controlling_Function_Wrappers): Do not
        create declarations and bodies for inherited primitive functions
        of null extensions that dispatch on result, when current scope
        includes an immediately visible non-overloadable homonym of the
        function.
        * libgnat/a-cborse.adb, libgnat/a-cborse.ads,
        libgnat/a-cbhase.ads, libgnat/a-cbhase.adb,
        libgnat/a-cborma.adb, libgnat/a-cborma.ads,
        libgnat/a-cbhama.adb, libgnat/a-cbhama.ads,
        libgnat/a-cbdlli.adb, libgnat/a-cbdlli.ads,
        libgnat/a-convec.ads, libgnat/a-ciorse.ads,
        libgnat/a-cihase.ads, libgnat/a-cihase.adb,
        libgnat/a-ciorma.ads, libgnat/a-cihama.ads,
        libgnat/a-cihama.adb, libgnat/a-cidlli.ads,
        libgnat/a-cidlli.adb, libgnat/a-coinve.adb,
        libgnat/a-cobove.adb, libgnat/a-cobove.ads,
        libgnat/a-convec.adb, libgnat/a-coinve.ads,
        libgnat/a-coorse.ads, libgnat/a-cohase.adb,
        libgnat/a-cohase.ads, libgnat/a-coorma.ads,
        libgnat/a-cohama.adb, libgnat/a-cohama.ads,
        libgnat/a-cdlili.ads: Add primitive function Empty for use in
        aspect Aggregate, and add corresponding body or expression
        function.

2020-10-20  Arnaud Charlet  <charlet@adacore.com>

        * aspects.adb (Has_Aspect_Specifications_Flag): Add
        N_Parameter_Specification.
        * par-ch13.adb (Aspect_Specifications_Present): Also handle case
        of an unknown aspect on the last formal parameter (terminated by
        a Tok_Right_Paren). Minor reformatting.
        * par-ch6.adb (P_Formal_Part): Scan aspects on formal
        parameters.
        * par.adb: Fix typos.
        * sem_ch6.adb (Process_Formals): Add processing of aspects and
        in particular Unreferenced aspect for now.
        * sinfo.ads: Allow ASPECT_SPECIFICATIONS on a
        PARAMETER_SPECIFICATION.
        * doc/gnat_rm/implementation_defined_aspects.rst
        (Aspect Unreferenced): Update documentation.
        * gnat_rm.texi: Regenerate.

2020-10-20  Piotr Trojanek  <trojanek@adacore.com>

        * sem_util.ads, sem_util.adb (Get_Accessibility): Refine result
        type from Node_Id to Entity_Id.

2020-10-20  Piotr Trojanek  <trojanek@adacore.com>

        * einfo.adb, exp_attr.adb, sem_ch13.adb, sem_util.adb: Use
        Is_Formal where possible.

2020-10-20  Steve Baird  <baird@adacore.com>

        * sem_util.ads: Declare a new package, Old_Attr_Util, which in
        turn declares two more packages, Conditional_Evaluation and
        Indirect_Temps. Conditional_Evaluation provides a predicate for
        deciding whether a given 'Old attribute reference is eligible
        for conditional evaluation and, in the case where it is
        eligible, a function that constructs the Boolean-valued
        condition that is to be evaluated at run time in deciding
        whether to evaluate the attribute prefix.  Indirect_Temps
        provides support for declaring a temporary which is only
        initialized conditionally; more specifically, an access type and
        a variable of that type are declared (unconditionally) and then
        the variable is (conditionally) initialized with an allocator.
        The existence of the access type and the pointer variable is
        hidden from clients, except that a predicate,
        Is_Access_Type_For_Indirect_Temp, is provided for identifying
        such access types. This is needed because we want such an access
        type to be treated like a "normal" access type (specifically
        with respect to finalization of allocated objects). Other parts
        of the compiler treat access types differently if
        Comes_From_Source is False, or if the secondary stack storage
        pool is used; this predicate is used to disable this special
        treatment.
        * sem_attr.adb (Uneval_Old_Msg): Improve message text to reflect
        Ada202x changes.
        (Analyze_Attribute): A previously-illegal 'Old attribute
        reference is accepted in Ada2020 if it is eligible for
        conditional evaluation.
        * sem_res.adb (Valid_Conversion): Do not treat a rewritten 'Old
        attribute like other rewrite substitutions. This makes a
        difference, for example, in the case where we are generating the
        expansion of a membership test of the form "Saooaaat'Old in
        Named_Access_Type"; in this case Valid_Conversion needs to
        return True (otherwise the expansion will be False - see the
        call site in exp_ch4.adb).
        * exp_attr.adb (Expand_N_Attribute_Reference): When expanding a
        'Old attribute reference, test for the case where the reference
        is eligible for conditional evaluation. In that case, use the
        new "indirect temporary" mechanism provided by Sem_Util.
        * exp_prag.adb
        (Expand_Attributes_In_Consequence.Expand_Attributes): If
        Sem_Util.Indirect_Temp_Needed indicates that there could be
        correctness problems associated with the old expansion scheme
        for dealing with 'Old attributes in contract cases consequences,
        then we use the new "indirect temporary" mechanism provided by
        Sem_Util instead. We do not want to do this unconditionally.
        * sem_util.adb: Provide a body for the new Old_Attr_Util
        package. Further work is needed in several areas for
        correctness:
        - The function Is_Repeatedly_Evaluated does not deal with
        container aggregates yet.
        - The function Is_Known_On_Entry does not deal with interactions
        with the Global aspect.
        Each area where more work is needed is indicated with a "???"
        comment in the code; a more detailed description can be found
        there. Some optimization opportunties are similarly indicated
        with a "???" comment.
        * exp_ch3.adb (Freeze_Type): In deciding whether to generate
        expansion for the list controller of an access type, take the
        predicate Is_Access_Type_For_Indirect_Temp into account. If the
        predicate yields True, then generate the expansion.
        * exp_util.adb (Build_Allocate_Deallocate_Proc): We don't
        normally finalize allocated objects that are allocated on the
        secondary stack. Add an exception to this rule if the predicate
        Is_Access_Type_For_Indirect_Temp yields True.  As a result of
        this exception, we have to deal with the fact that gigi expects
        a different parameter profile if we are using the secondary
        stack pool; the Pool and Alignment parameters must be omitted in
        this case.

2020-10-20  Javier Miranda  <miranda@adacore.com>

        * sem_ch12.adb (Install_Parents_Of_Generic_Context,
        Remove_Parents_Of_Generic_Context): New subprograms.
        (Instantiate_Package_Body): Adding assertions to ensure that
        installed parents are properly removed.

2020-10-20  Claire Dross  <dross@adacore.com>

        * sem_attr.adb (Analyze_Attribute): Emit a warning on 'Update
        when Warn_On_Obsolescent_Feature is set to True.

2020-10-20  Richard Kenner  <kenner@adacore.com>

        * gnat_cuda.adb (Build_Register_Function_Call): Make procedure
        call instead of function, rename to
        Build_Register_Procedure_Call.
        (Build_CUDA_Init_Proc): Make procedure call instead of function.

2020-10-20  Justin Squirek  <squirek@adacore.com>

        * exp_ch6.adb (Expand_Branch): Properly anticipate expansion of
        conditional expressions producing object declarations in
        addition to assignment statements, and rename formal.

2020-10-20  Yannick Moy  <moy@adacore.com>

        * errout.adb (Write_Source_Code_Line): Adopt display closer to
        GCC format.
        (Output_Messages): Deal specially with info messages.
        * erroutc.adb (Prescan_Message): Fix bug leading to check
        messages being considered as error messages in pretty output
        mode.

2020-10-20  Justin Squirek  <squirek@adacore.com>

        * exp_ch6.adb (Expand_Call_Helper): Properly handle the case
        where the condition of a conditional expression has been
        optimized out when calculating the value of an extra
        accessibility parameter.

2020-10-20  Bob Duff  <duff@adacore.com>

        * doc/gnat_ugn/gnat_utility_programs.rst: Change "_" to "-".

2020-10-20  Arnaud Charlet  <charlet@adacore.com>

        * sem_aggr.adb (Resolve_Aggregate): Warn on not fully
        initialized box aggregate.
        * sem_aggr.ads: Fix typo.
        * sem_res.adb (Resolve_Actuals): Fix typo in error message
        format marking it incorrectly as a continuation message.
        * sem_elab.adb (Check_Internal_Call_Continue): Similarly, add
        missing primary message in case of a call to an actual generic
        subprogram.
        * sem_warn.adb (Check_References): Do not warn on read but never
        assigned variables if the type is partially initialized.
        * libgnat/a-except.ads, libgnat/a-ststun.ads,
        libgnat/g-sechas.ads, libgnat/a-cbdlli.ads,
        libgnat/a-cfdlli.ads, libgnat/a-cobove.ads,
        libgnat/a-cohata.ads, libgnat/a-crbltr.ads,
        libgnat/a-cbmutr.ads, libgnat/a-crdlli.ads,
        libgnat/a-cbsyqu.ads: Address new warning.
        * doc/gnat_ugn/building_executable_programs_with_gnat.rst:
        Update doc on -gnatwv.
        * gnat_ugn.texi: Regenerate.

2020-10-20  Gary Dismukes  <dismukes@adacore.com>

        * sem_ch6.adb (Analyze_Expression_Function): Mark static
        expression functions as inlined.

2020-10-20  Arnaud Charlet  <charlet@adacore.com>

        * contracts.adb (Is_Prologue_Renaming): This function was
        missing support for E_Constant which can also be generated in
        protected objects.

2020-10-20  Arnaud Charlet  <charlet@adacore.com>

        * bindgen.adb (Gen_Bind_Env_String): Generate Ada 2012 compatible
        strings. Code cleanup.

2020-10-20  Yannick Moy  <moy@adacore.com>

        * sem_util.adb, sem_util.ads: Comment fix.

2020-10-20  Arnaud Charlet  <charlet@adacore.com>

        * sem_ch8.adb (Check_Constrained_Object): Suppress discriminant
        checks when the type has default discriminants and comes from
        expansion of a "for of" loop.

2020-10-20  Bob Duff  <duff@adacore.com>

        * atree.ads: Make Default_Node a constant.  Remove the
        modification of Comes_From_Source, and use a separate flag for
        that.  Change Sloc to 0; it always overwritten, and never left
        as the No_Location value.
        (Print_Statistics): Move to spec so we can call it from
        gnat1drv.
        (Num_Nodes): Rename to clarify that this is approximate.
        Correct comment: nodes and entities are never deleted, the count
        is never decremented, and this is not used by Xref.
        (Initialize): Correct comment: Error_List is not created here.
        Other minor naming and comment changes.
        * atree.adb (Extend_Node, New_Copy, New_Entity, New_Node):
        Streamline these. Simplify and improve efficiency.  Move code
        from Allocate_Initialize_Node to these, where it can be executed
        unconditionally.  Take advantage of automatic zeroing of the
        Nodes table.
        (Allocate_Initialize_Node): Remove this. It was an efficiency
        bottleneck, and somewhat complicated, because it was called from
        4 places, and had all sorts of conditionals to check where it
        was called from. Better to move most of that code to the call
        sites, where it can be executed (or not) unconditionally.
        (Allocate_New_Node): New procedure to partly replace
        Allocate_Initialize_Node (called from just 2 of those 4 places).
        (Comes_From_Source_Default): New flag written/read by
        Set_Comes_From_Source_Default/Get_Comes_From_Source_Default.
        This allows us to make Default_Node into a constant with
        all-zeros value.
        (Set_Paren_Count_Of_Copy): New procedure to avoid duplicated
        code.
        (Report): New procedure to encapsulate the call to the reporting
        procedure.
        (Atree_Private_Part): We now need a body for this package, to
        contain package body Nodes.
        (Approx_Num_Nodes_And_Entities): Was Num_Nodes.  For efficiency,
        compute the answer from Nodes.Last. That way we don't need to
        increment a counter on every node creation. Other minor naming
        and comment changes.
        * gnat1drv.adb: Call Atree.Print_Statistics if -gnatd.A switch
        was given.  Add comment documenting the new order dependency (we
        must process the command line before calling Atree.Initialize).
        * debug.adb: Document -gnatd.A.
        * einfo.adb, sinfo.adb: Remove useless Style_Checks pragmas.
        * nlists.ads (Allocate_List_Tables): Inline makes node creation
        a little faster.
        * nlists.adb (Initialize): Remove local constant E, which didn't
        seem to add clarity.
        * treepr.adb (Print_Init): Use renamed
        Approx_Num_Nodes_And_Entities function.
        * types.ads: Change the Low and High bounds as described above.
        * types.h: Change Low and High bounds to match types.ads.
        * sem_ch8.adb, namet.adb, namet.ads: Move the computation of
        Last_Name_Id from sem_ch8 to namet, and correct it to not assume
        Name_Ids are positive.
        * ali.adb, ali-util.adb, bindo-writers.adb, exp_dist.adb,
        fmap.adb, fname-uf.adb, osint.adb: Fix various hash functions to
        avoid assuming the various ranges are positive. Note that "mod"
        returns a nonnegative result when the second operand is
        positive. "rem" can return negative values in that case (in
        particular, if the first operand is negative, which it now is).
        * switch-c.adb: Allow switch -gnaten to control the value of
        Nodes_Size_In_Meg.
        * doc/gnat_ugn/building_executable_programs_with_gnat.rst:
        Remove traling whitespaces.
        * opt.ads (Nodes_Size_In_Meg): New Variable.

2020-10-20  Eric Botcazou  <ebotcazou@adacore.com>

        * exp_util.adb (Remove_Side_Effects): Always generate a renaming
        that is handled by the front-end in the case of an indexed or a
        selected component whose prefix has a nonstandard representation.

2020-10-20  Pat Rogers  <rogers@adacore.com>

        * doc/gnat_rm/the_gnat_library.rst: Add Ada.Task_Initialization.
        * gnat_rm.texi: Regenerate.

2020-10-20  Yannick Moy  <moy@adacore.com>

        * errout.adb: (Error_Msg-Internal): Pass the location for a line
        insertion if any in the message.
        (Output_Messages: Add display of source code lines if -gnatdF is
        set.
        (Write_Source_Code_Line): Code clean up.
        * erroutc.adb (Prescan_Message): Apply prescan for continuation
        lines when -gnatdF is set, and record presence of line
        insertion.
        * erroutc.ads (Has_Insertion_Line): New global for prescan.
        (Error_Msg_Object): Add field to record line insertion if
        present.
        * errutil.adb (Error_Msg): Pass no location for Insertion_Sloc.

2020-10-20  Arnaud Charlet  <charlet@adacore.com>

        * exp_ch5.adb (Expand_N_Case_Statement): Do not generate
        validity check when possible.

2020-10-20  Ed Schonberg  <schonberg@adacore.com>

        * exp_aggr.adb (Expand_Iterated_Component): Reorganize code to
        ensure that Loop_Id is properly initialized on all paths, and
        remove code duplication.

2020-10-20  Piotr Trojanek  <trojanek@adacore.com>

        * sem_ch3.adb (Analyze_Subtype_Declaration): Propagate predicate
        function to full view of the created type as well, if it was
        created.

2020-10-20  Arnaud Charlet  <charlet@adacore.com>

        * exp_attr.adb (Expand_N_Attribute_Reference): Merge handling of
        Simple_Storage_Pool and Storage_Pool.

2020-10-20  Piotr Trojanek  <trojanek@adacore.com>

        * aspects.ads: Introduce Subprogram_Variant aspect with the
        following properties: GNAT-specific, with mandatory expression,
        not a representation aspect, never delayed.
        * contracts.adb (Expand_Subprogram_Contract): Mention new aspect
        in the comment.
        (Add_Contract_Item): Support addition of pragma
        Subprogram_Variant to N_Contract node.
        (Analyze_Entry_Or_Subprogram_Contract): Mention new aspect in
        the comment; add pragma Subprogram_Variant to N_Contract node.
        (Build_Postconditions_Procedure): Adapt call to
        Insert_Before_First_Source_Declaration, which is now reused in
        expansion of new aspect.
        (Process_Contract_Cases_For): Also process Subprogram_Variant,
        which is stored in N_Contract node together with Contract_Cases.
        * contracts.ads (Analyze_Entry_Or_Subprogram_Contract): Mention
        new aspect in the comment.
        (Analyze_Entry_Or_Subprogram_Body_Contract): Likewise.
        * einfo.adb (Get_Pragma): Support retrieval of new pragma.
        * einfo.ads (Get_Pragma): Likewise.
        * exp_ch6.adb (Check_Subprogram_Variant): New routine for
        emitting call to check Subprogram_Variant expressions at run
        time.
        (Expand_Call_Helper): Check Subprogram_Variant expressions at
        recursive calls.
        * exp_prag.adb (Make_Op): Moved from expansion of pragma
        Loop_Variant to Exp_Util, so it is now reused for expansion of
        pragma Subprogram_Variant.
        (Process_Variant): Adapt call to Make_Op after moving it to
        Exp_Util.
        (Expand_Pragma_Subprogram_Variant): New routine.
        * exp_prag.ads (Expand_Pragma_Subprogram_Variant): Likewise.
        * exp_util.adb (Make_Variant_Comparison): Moved from Exp_Prag
        (see above).
        * exp_util.ads (Make_Variant_Comparison): Likewise.
        * inline.adb (Remove_Aspects_And_Pragmas): Handle aspect/pragma
        Subprogram_Variant just like similar contracts.
        * par-prag.adb (Prag): Likewise.
        * sem.adb (Insert_Before_First_Source_Declaration): Moved from
        Contracts (see above).
        * sem.ads (Insert_Before_First_Source_Declaration): Likewise.
        * sem_ch12.adb: Mention new aspect in the comment about
        "Implementation of Generic Contracts", just like similar aspects
        are mentioned there.
        * sem_ch13.adb (Insert_Pragma): Mention new aspect in the
        comment, because this routine is now used for Subprogram_Variant
        just like for other similar aspects.
        (Analyze_Aspect_Specifications): Mention new aspect in comments;
        it is handled just like aspect Contract_Cases.
        (Check_Aspect_At_Freeze_Point): Do not expect aspect
        Subprogram_Variant just like we don't expect aspect
        Contract_Cases.
        * sem_prag.adb (Ensure_Aggregate_Form): Now also used for pragma
        Subprogram_Variant, so update comment.
        (Analyze_Pragma): Add initial checks for pragma
        Subprogram_Variant.
        (Analyze_Subprogram_Variant_In_Decl_Part): New routine with
        secondary checks on the new pragma.
        (Sig_Flags): Handle references within pragma Subprogram_Variant
        expression just like references in similar pragma
        Contract_Cases.
        (Is_Valid_Assertion_Kind): Handle Subprogram_Variant just like
        other similar contracts.
        * sem_prag.ads (Analyze_Subprogram_Variant_In_Decl_Part): New
        routine.
        * sem_res.adb (Same_Or_Aliased_Subprograms): Moved to Sem_Util,
        so it can be reused for detection of recursive calls where
        Subprogram_Variant needs to be verified.
        * sem_util.adb (Is_Subprogram_Contract_Annotation): Handle new
        Subprogram_Variant annotation just like other similar
        annotations.
        (Same_Or_Aliased_Subprograms): Moved from Sem_Res (see above).
        * sem_util.ads (Is_Subprogram_Contract_Annotation): Mention new
        aspect in the comment.
        (Same_Or_Aliased_Subprograms): Moved from Sem_Res (see above).
        * sinfo.ads (N_Contract): Document handling of
        Subprogram_Variant.
        * snames.ads-tmpl: Add name for the internally generated
        procedure with checks for Subprogram_Variant expression, name
        for the new aspect and new pragma corresponding to aspect
        Subprogram_Variant.

2020-10-20  Piotr Trojanek  <trojanek@adacore.com>

        * exp_util.ads: Reorder declaration.

2020-10-19  Ed Schonberg  <schonberg@adacore.com>

        * par-ch4.adb: (P_Aggregate_Or_Paren_Expr): Recognize
        Iterated_Element_Component.
        (P_Iterated_Component_Association): Rebuild node as an Iterated_
        Element_Association when Key_Expression is present, and attach
        either the Loop_Parameter_Specification or the
        Iterator_Specification to the new node.
        * sem_aggr.adb: (Resolve_Container_Aggregate):
        Resolve_Iterated_Association handles bota Iterated_Component_
        and Iterated_Element_Associations, in which case it analyzes and
        resoles the orresponding Key_Expression.
        * exp_aggr.adb (Expand_Iterated_Component): If a Key_Expression
        is present, use it as the required parameter in the call to the
        insertion routine for the destination container aggregate. Call
        this routine for both kinds of Iterated_Associations.

2020-10-19  Arnaud Charlet  <charlet@adacore.com>

        * exp_ch4.adb (Expand_Concatenate): Enable needed range checks.

2020-10-19  Bob Duff  <duff@adacore.com>

        * exp_ch6.adb (Make_Build_In_Place_Call_In_Object_Declaration):
        Set the Warnings_Off flag on the pointer object used in the
        expansion of iterators and similar.

2020-10-19  Eric Botcazou  <ebotcazou@adacore.com>

        * Makefile.rtl (PowerPC/Linux): Use s-taspri__posix.ads instead
        of s-taspri__posix-noaltstack.ads for s-taspri.ads.

2020-10-19  Piotr Trojanek  <trojanek@adacore.com>

        * sem_ch13.adb (Add_Call): Remove excessive condition and
        unnecessary call to Set_Has_Predicates.

2020-10-19  Yannick Moy  <moy@adacore.com>

        * debug.adb: Use debug switch -gnatdF for this alternative
        display of messages.
        * errout.adb (Output_Messages): Alternative display when -gnatdF
        is used.
        * erroutc.adb (Output_Msg_Text): Likewise.

2020-10-19  Arnaud Charlet  <charlet@adacore.com>

        * sem_ch6.adb (Check_Untagged_Equality): Check for AI12-0352.

2020-10-19  Ed Schonberg  <schonberg@adacore.com>

        * exp_ch6.adb (Add_View_Conversion_Invariants): Do not insert
        generated invariant checks when the call is a function call.
        These tests are properly inserted in the code in procedure
        Insert_Post_Call_Actions, which takes care of finding the proper
        insertion point for the checks.
        (Insert_Post_Call_Actions): Add question marks to indicate
        possible gap in handling function calls that appear as aggregate
        components.

2020-10-19  Arnaud Charlet  <charlet@adacore.com>

        * contracts.adb (Process_Preconditions_For): Do not exclude
        instances.
        * sem_ch4.adb (Analyze_Quantified_Expression): Disable spurious
        warning on internally generated variables.

2020-10-19  Ghjuvan Lacambre  <lacambre@adacore.com>

        * debug.adb: Document -gnatd_c flag as being used for CUDA.
        * gnat_cuda.ads: New file.
        * gnat_cuda.adb: New file.
        * rtsfind.ads: Add Interfaces_C_Strings package and
        RE_Fatbin_Wrapper, RE_Register_Fat_Binary,
        RE_Register_Fat_Binary_End, RE_Register_Function, RE_Chars_Ptr,
        RE_New_Char_Array entities.
        * rtsfind.adb: Create new Interfaces_C_Descendant subtype,
        handle it.
        * sem_ch7.adb (Analyze_Package_Body_Helper): Call CUDA init
        procedure.
        * sem_prag.adb (Analyze_Pragma): Call Add_Cuda_Kernel procedure.
        * gcc-interface/Make-lang.in (GNAT_ADA_OBJS): Add gnat_cuda.o.

2020-10-19  Bob Duff  <duff@adacore.com>

        * ghost.adb (Whole_Object_Ref): New function to compute the name
        of the whole object.
        (Mark_And_Set_Ghost_Assignment): Rewrite to use
        Whole_Object_Ref.  We need to partly analyze the left-hand side
        in order to distinguish expanded names and record components.
        * lib-xref.ads, lib-xref.adb (Deferred_References): Move table
        to body, and add Defer_Reference to update the table, avoiding
        duplicates.
        (Generate_Reference): Avoid duplicates.
        * sem_ch8.ads, sem_ch8.adb (Find_Direct_Name): Remove _OK
        parameters, which are no longer needed. Ignore errors in
        Ignore_Errors mode.
        * sem_util.ads, sem_util.adb (Preanalyze_Without_Errors): Make
        this public, so we can call it from Ghost.
        * errout.ads, scng.adb, sem_prag.adb: Minor.

2020-10-19  Ghjuvan Lacambre  <lacambre@adacore.com>

        * exp_attr.adb (Expand_N_Attribute_Reference): Check if type
        depends on discriminant.

2020-10-19  Bob Duff  <duff@adacore.com>

        * libgnat/a-coinve.adb, libgnat/a-cidlli.adb (Put_Image): Call
        Iterate.

2020-10-19  Arnaud Charlet  <charlet@adacore.com>

        * sem_aggr.adb (Resolve_Record_Aggregate): Properly apply
        subtype constraints when using a Default_Value.
        * freeze.adb: Fix typo.

2020-10-19  Yannick Moy  <moy@adacore.com>

        * sem_ch13.adb (Analyze_Aspect_Relaxed_Initialization): Fix bug
        where a call to Error_Msg_N leads to crash due to
        Error_Msg_Name_1 being removed by the call, while a subsequent
        call to Error_Msg_N tries to use it. The variable
        Error_Msg_Name_1 should be restored prior to the next call. Also
        add checking for the new rules.

2020-10-19  Arnaud Charlet  <charlet@adacore.com>

        * checks.adb (Apply_Type_Conversion_Checks): Minor code clean
        up.
        * exp_ch4.adb (Discrete_Range_Check): Optimize range checks.
        Update comments.
        (Expand_N_Type_Conversion): Generate range check when rewriting
        a type conversion if needed. Add assertion.
        * exp_ch6.adb (Expand_Simple_Function_Return): Minor code clean
        up.
        * sem_res.adb (Resolve_Type_Conversion): Apply range check when
        needed.  Update comments.

2020-10-19  Yannick Moy  <moy@adacore.com>

        * libgnat/a-textio.ads: Update top-level comment.

2020-10-19  Piotr Trojanek  <trojanek@adacore.com>

        * sem_prag.adb (Analyze_Contract_Cases_In_Decl_Part): Fix typo.

2020-10-19  Piotr Trojanek  <trojanek@adacore.com>

        * exp_ch6.adb (Expand_Actuals): Simplify condition for by-copy
        types.

2020-10-19  Yannick Moy  <moy@adacore.com>

        * errout.ads: Add comment regarding lack of preservation of
        Errout state across successive calls to the API.

2020-10-19  Bob Duff  <duff@adacore.com>

        * exp_put_image.adb (Build_Elementary_Put_Image_Call): Use the
        base type to recognize various cases of access types.
        * libgnat/a-cbdlli.adb, libgnat/a-cbdlli.ads, libgnat/a-cbhama.adb,
        libgnat/a-cbhama.ads, libgnat/a-cbhase.adb, libgnat/a-cbhase.ads,
        libgnat/a-cbmutr.adb, libgnat/a-cbmutr.ads, libgnat/a-cborma.adb,
        libgnat/a-cborma.ads, libgnat/a-cborse.adb, libgnat/a-cborse.ads,
        libgnat/a-cdlili.adb, libgnat/a-cdlili.ads, libgnat/a-cidlli.adb,
        libgnat/a-cidlli.ads, libgnat/a-cihama.adb, libgnat/a-cihama.ads,
        libgnat/a-cihase.adb, libgnat/a-cihase.ads, libgnat/a-cimutr.adb,
        libgnat/a-cimutr.ads, libgnat/a-ciorma.adb, libgnat/a-ciorma.ads,
        libgnat/a-ciormu.adb, libgnat/a-ciormu.ads, libgnat/a-ciorse.adb,
        libgnat/a-ciorse.ads, libgnat/a-coboho.adb, libgnat/a-coboho.ads,
        libgnat/a-cobove.adb, libgnat/a-cobove.ads, libgnat/a-cohama.adb,
        libgnat/a-cohama.ads, libgnat/a-cohase.adb, libgnat/a-cohase.ads,
        libgnat/a-coinho.adb, libgnat/a-coinho.ads,
        libgnat/a-coinho__shared.adb, libgnat/a-coinho__shared.ads,
        libgnat/a-coinve.adb, libgnat/a-coinve.ads, libgnat/a-comutr.adb,
        libgnat/a-comutr.ads, libgnat/a-coorma.adb, libgnat/a-coorma.ads,
        libgnat/a-coormu.adb, libgnat/a-coormu.ads, libgnat/a-coorse.adb,
        libgnat/a-coorse.ads, libgnat/a-strunb.adb, libgnat/a-strunb.ads,
        libgnat/a-strunb__shared.adb, libgnat/a-strunb__shared.ads:
        Implement Put_Image attibute.
        * libgnat/a-stteou.ads, libgnat/s-putima.ads,
        libgnat/a-stouut.ads, libgnat/a-stoubu.adb: Make
        Ada.Strings.Text_Output, Ada.Strings.Text_Output.Utils, and
        System.Put_Images Pure, so they can be with'ed by Pure units
        that should have Put_Image defined.
        * libgnat/a-stouut.adb: Add missing column adjustments, and
        remove a redundant one.
        * libgnat/s-putima.adb (Put_Arrow): New routine to print an
        arrow. Avoids adding a with clause to some containers.

2020-10-19  Bob Duff  <duff@adacore.com>

        * par-ch4.adb (P_Aggregate_Or_Paren_Expr): Require matching
        parens or brackets.
        * par.adb, par-tchk.adb (T_Right_Bracket): New procedure to give
        an error on missing ].

2020-10-19  Javier Miranda  <miranda@adacore.com>

        * sem_ch8.adb (Find_Direct_Name): Do not trust in the decoration
        of the Entity attribute in constants associated with
        discriminals of protected types.

2020-10-19  Gary Dismukes  <dismukes@adacore.com>

        * sem_disp.adb (Check_Dispatching_Context): When the enclosing
        subprogram is abstract, bypass early return if the call is
        tag-indeterminate, to continue with the later error checking.

2020-10-19  Javier Miranda  <miranda@adacore.com>

        * sem_ch7.adb (Uninstall_Declarations): Uninstall the
        declaration of a subtype declaration defined in the private part
        of a package.

2020-10-19  Arnaud Charlet  <charlet@adacore.com>

        * par-ch4.adb (P_Aggregate_Or_Paren_Expr): Simplify code since
        we are always under -gnatX if we encounter a Tok_Left_Bracket.
        * scng.adb (Scan): [] is an aggregate under -gnatX and a wide
        character otherwise.

2020-10-19  Piotr Trojanek  <trojanek@adacore.com>

        * exp_ch6.adb (Expand_Call_Helper): Cleanup.

2020-10-19  Piotr Trojanek  <trojanek@adacore.com>

        * exp_ch6.adb (Is_Direct_Deep_Call): Refine type from Node_Id to
        Entity_Id.

2020-10-19  Piotr Trojanek  <trojanek@adacore.com>

        * exp_ch6.adb (May_Fold): Detect all operators, i.e. both binary
        and unary ones.

2020-10-19  Piotr Trojanek  <trojanek@adacore.com>

        * inline.adb (Expand_Inlined_Call): Simplify repeated calls to
        Nkind.

2020-10-18  Alexandre Oliva  <oliva@adacore.com>

        * Makefile.rtl (GNATRTL_NONTASKING_OBJS): Compile Ada.Numerics
        child units Aux_Generic_Float, Aux_Long_Long_Float, Aux_Long_Float,
        Aux_Float, Aux_Short_Float, Aux_Compat, and Aux_Linker_Options.
        (X86_TARGET_PAIRS): Drop dummy body for Aux.  Use x86 version
        of Aux_Compat.
        (X86_64_TARGET_PAIRS): Likewise.
        (LIBGNAT_TARGET_PAIRS): On VxWorks, select the nolibm
        variants.  Drop the darwin version of Aux.  Drop the redundant
        libc-x86 numaux variants on x86* kfreebsd variants.
        * libgnat/a-nagefl.ads: New Aux_Generic_Float.
        * libgnat/a-naliop.ads: New Aux_Linker_Options.
        * libgnat/a-naliop__nolibm.ads: New.
        * libgnat/a-nallfl.ads: New Aux_Long_Long_Float.
        * libgnat/a-nalofl.ads: New Aux_Long_Float.
        * libgnat/a-nuaufl.ads: New Aux_Float.
        * libgnat/a-nashfl.ads: New Aux_Short_Float.
        * libgnat/a-ngcefu.adb (Exp): Factor out the Im (X) passed to
        Sin and Cos in the Complex variant too.
        * libgnat/a-ngcoty.adb: Switch to Aux_Generic_Float.  Drop
        redundant conversions.
        * libgnat/a-ngelfu.adb: Likewise.
        * libgnat/a-nuauco.ads: New Aux_Compat.
        * libgnat/a-nuauco__x86.ads: New.
        * libgnat/a-numaux.ads: Replace with Compat wrapper.
        * libgnat/a-numaux__darwin.adb: Remove.
        * libgnat/a-numaux__darwin.ads: Remove.
        * libgnat/a-numaux__dummy.adb: Remove.
        * libgnat/a-numaux__libc-x86.ads: Remove.
        * libgnat/a-numaux__vxworks.ads: Remove.

2020-10-16  Piotr Trojanek  <trojanek@adacore.com>

        * checks.adb, exp_aggr.adb, exp_attr.adb, exp_ch6.adb,
        freeze.adb, sem_aggr.adb, sem_attr.adb, sem_ch13.adb,
        sem_ch13.ads, sem_ch6.adb, sem_eval.adb, sem_util.adb: Fix style
        and typos.

2020-10-16  Arnaud Charlet  <charlet@adacore.com>

        * sem_cat.adb (Is_Primary): Handle N_Range properly.

2020-10-16  Ghjuvan Lacambre  <lacambre@adacore.com>

        * elists.ads (New_Elmt_List): New functions.
        * elists.adb (New_Elmt_List): New functions.
        * exp_prag.adb: Add dependency on Elists.
        (Expand_Pragma_CUDA_Execute): New function.
        (Expand_N_Pragma): Add call to Expand_Pragma_CUDA_Execute.
        * rtsfind.ads: Add CUDA.Internal, CUDA.Runtime, System.C
        packages and RE_Push_Call_Configuration,
        RE_Pop_Call_Configuration, RE_Launch_Kernel, RO_IC_Unsigned,
        RO_IC_Unsigned_Long_Long entities.
        * rtsfind.adb: Extend Interfaces_Descendant to include
        Interfaces_C.

2020-10-16  Bob Duff  <duff@adacore.com>

        * par-ch4.adb (P_Name): Allow Tok_Left_Bracket in two places to
        call P_Qualified_Expression. We don't need to modify other
        places that call P_Qualified_Expression, because a
        qualified_expression is a name in Ada 2012 and higher, so P_Name
        is the right place.  The parser already parses aggregates with
        brackets; we just need to allow that in qualified expressions.

2020-10-16  Javier Miranda  <miranda@adacore.com>

        * sem_ch12.adb (Check_Generic_Child_Unit): When the child unit
        is a renaming of a generic child unit then traverse the scope
        containing the renaming declaration to locate the instance of
        its parent.  Otherwise the parent is not installed and the
        frontend cannot process the instantiation.

2020-10-16  Bob Duff  <duff@adacore.com>

        * libgnat/a-numeri.ads: Remove the greek letter.

2020-10-16  Ed Schonberg  <schonberg@adacore.com>

        * exp_imgv.adb (Expand_Image_Attribute): Refine previous patch
        to use root type (and not base type) on enumeration types.

2020-10-16  Ed Schonberg  <schonberg@adacore.com>

        * exp_imgv.adb (Expand_Image_Attribute): Use the base type
        instead of the root type when type of object is private. Remove
        Ada_2020 guard, because it has been checked during prior
        analysis. Use Underlying_Type in all cases, as it is a no-op on
        types that are not private.

2020-10-16  Arnaud Charlet  <charlet@adacore.com>

        * aspects.ads, snames.ads-tmpl: Add support for
        Exclusive_Functions aspect.
        * sem_ch13.adb (Analyze_Aspect_Specifications): Ditto.
        * exp_ch9.adb (Build_Protected_Subprogram_Body): Take aspect
        Exclusive_Functions into account.

2020-10-16  Arnaud Charlet  <charlet@adacore.com>

        * gcc-interface/Make-lang.in: Update dependencies on system.ads,
        add gnatbind switch -t to avoid timestamp inconsistencies during
        build.
        * libgnat/system.ads: Move...
        * gcc-interface/system.ads: ... here.

2020-10-16  Gary Dismukes  <dismukes@adacore.com>

        * sem_eval.adb (Subtypes_Statically_Match): Retrieve
        discriminant constraints from the two types via new function
        Original_Discriminant_Constraint rather than
        Discriminant_Constraint.
        (Original_Discriminant_Constraint): New function to locate the
        nearest explicit discriminant constraint associated with a type
        that may possibly have inherited a constraint from an ancestor
        type.

2020-10-16  Bob Duff  <duff@adacore.com>

        * exp_ch6.adb (Expand_Simple_Function_Return): Remove obsolete
        comment and code.

2020-10-16  Arnaud Charlet  <charlet@adacore.com>

        PR ada/95953
        * libgnat/a-suenco.adb (Convert): Fix handling of third UTF-8
        byte.

2020-10-16  Steve Baird  <baird@adacore.com>

        * exp_util.adb (Is_Related_To_Func_Return): Cope with the case
        where the FE introduces a type conversion.

2020-10-16  Chris Martin  <cmartin@adacore.com>

        * sem_util.ads, sem_util.adb (Is_Access_Variable): New function.
        (Is_Synchronized_Object): Call new function when determining if
        a constant can be regarded as synchronized.

2020-10-16  Arnaud Charlet  <charlet@adacore.com>

        * exp_ch6.adb (Make_Build_In_Place_Call_In_Object_Declaration):
        Call Set_BIP_Initialization_Call systematically.
        * exp_ch7.adb (Process_Transient_In_Scope): Take
        BIP_Initialization_Call into account to decide where to insert
        the Hook.

2020-10-16  Piotr Trojanek  <trojanek@adacore.com>

        * sem_util.adb (Is_View_Conversion): Detect qualified types.
        * sem_util.ads (Is_Actual_In_Out_Parameter): Fix style in
        comment.

2020-10-16  Arnaud Charlet  <charlet@adacore.com>

        * scil_ll.adb, sem_scil.adb: Update assertions.

2020-10-16  Ed Schonberg  <schonberg@adacore.com>

        * sem_attr.adb (Min_Max): Handle the case where attribute
        name (qualified by required type) appears as the reducer of a
        'Reduce attribute reference.
        (Resolve_Attribute) <Reduce>: Handle properly the presence of a
        procedure or an attribute reference Min/Max as a reducer.
        * exp_attr.adb (Expand_Attribute_Reference) <Reduce>: New
        subprogram Build_Stat, to construct the combining statement
        which appears in the generated loop for Reduce, and which is
        either a function call when the reducer is a function or an
        attribute, or a procedure call when reducer is an appropriate
        procedure.  BuilD_Stat is used both when the prefix of 'Reduce
        is a value sequence and when it is an object

2020-10-16  Arnaud Charlet  <charlet@adacore.com>

        * exp_ch4.adb (Expand_Concatenate): Allocate result of string
        concatenation on secondary stack when relevant.

2020-10-16  Ed Schonberg  <schonberg@adacore.com>

        * sem_res.adb (Resolve_Declare_Expression): Retrieve the created
        block entity that is the scope of the local declarations, from
        either a local object declaration or an object renaming
        declaration. The block entity does not have an explicit
        declaration, but appears as the scope of all locally declared
        objects.

2020-10-16  Eric Botcazou  <ebotcazou@adacore.com>

        * libgnat/system-aix.ads: Likewise.
        * libgnat/system-darwin-arm.ads: Likewise.
        * libgnat/system-darwin-ppc.ads: Likewise.
        * libgnat/system-darwin-x86.ads: Likewise.
        * libgnat/system-djgpp.ads: Likewise.
        * libgnat/system-dragonfly-x86_64.ads: Likewise.
        * libgnat/system-freebsd.ads: Likewise.
        * libgnat/system-hpux-ia64.ads: Likewise.
        * libgnat/system-hpux.ads: Likewise.
        * libgnat/system-linux-alpha.ads: Likewise.
        * libgnat/system-linux-arm.ads: Likewise.
        * libgnat/system-linux-hppa.ads: Likewise.
        * libgnat/system-linux-ia64.ads: Likewise.
        * libgnat/system-linux-m68k.ads: Likewise.
        * libgnat/system-linux-mips.ads: Likewise.
        * libgnat/system-linux-ppc.ads: Likewise.
        * libgnat/system-linux-riscv.ads: Likewise.
        * libgnat/system-linux-s390.ads: Likewise.
        * libgnat/system-linux-sh4.ads: Likewise.
        * libgnat/system-linux-sparc.ads: Likewise.
        * libgnat/system-linux-x86.ads: Likewise.
        * libgnat/system-lynxos178-ppc.ads: Likewise.
        * libgnat/system-lynxos178-x86.ads: Likewise.
        * libgnat/system-mingw.ads: Likewise.
        * libgnat/system-qnx-aarch64.ads: Likewise.
        * libgnat/system-rtems.ads: Likewise.
        * libgnat/system-solaris-sparc.ads: Likewise.
        * libgnat/system-solaris-x86.ads: Likewise.
        * libgnat/system-vxworks-arm-rtp-smp.ads: Likewise.
        * libgnat/system-vxworks-arm-rtp.ads: Likewise.
        * libgnat/system-vxworks-arm.ads: Likewise.
        * libgnat/system-vxworks-e500-kernel.ads: Likewise.
        * libgnat/system-vxworks-e500-rtp-smp.ads: Likewise.
        * libgnat/system-vxworks-e500-rtp.ads: Likewise.
        * libgnat/system-vxworks-e500-vthread.ads: Likewise.
        * libgnat/system-vxworks-ppc-kernel.ads: Likewise.
        * libgnat/system-vxworks-ppc-ravenscar.ads: Likewise.
        * libgnat/system-vxworks-ppc-rtp-smp.ads: Likewise.
        * libgnat/system-vxworks-ppc-rtp.ads: Likewise.
        * libgnat/system-vxworks-ppc-vthread.ads: Likewise.
        * libgnat/system-vxworks-ppc.ads: Likewise.
        * libgnat/system-vxworks-x86-kernel.ads: Likewise.
        * libgnat/system-vxworks-x86-rtp-smp.ads: Likewise.
        * libgnat/system-vxworks-x86-rtp.ads: Likewise.
        * libgnat/system-vxworks-x86-vthread.ads: Likewise.
        * libgnat/system-vxworks-x86.ads: Likewise.
        * libgnat/system-vxworks7-aarch64-rtp-smp.ads: Likewise.
        * libgnat/system-vxworks7-aarch64.ads: Likewise.
        * libgnat/system-vxworks7-arm-rtp-smp.ads: Likewise.
        * libgnat/system-vxworks7-arm.ads: Likewise.
        * libgnat/system-vxworks7-e500-kernel.ads: Likewise.
        * libgnat/system-vxworks7-e500-rtp-smp.ads: Likewise.
        * libgnat/system-vxworks7-e500-rtp.ads: Likewise.
        * libgnat/system-vxworks7-ppc-kernel.ads: Likewise.
        * libgnat/system-vxworks7-ppc-rtp-smp.ads: Likewise.
        * libgnat/system-vxworks7-ppc-rtp.ads: Likewise.
        * libgnat/system-vxworks7-ppc64-kernel.ads: Likewise.
        * libgnat/system-vxworks7-ppc64-rtp-smp.ads: Likewise.
        * libgnat/system-vxworks7-x86-kernel.ads: Likewise.
        * libgnat/system-vxworks7-x86-rtp-smp.ads: Likewise.
        * libgnat/system-vxworks7-x86-rtp.ads: Likewise.
        * libgnat/system-vxworks7-x86_64-kernel.ads: Likewise.
        * libgnat/system-vxworks7-x86_64-rtp-smp.ads: Likewise.

2020-10-16  Arnaud Charlet  <charlet@adacore.com>

        * Makefile.rtl, gnat1drv.adb, expander.adb
        doc/gnat_rm/implementation_defined_pragmas.rst,
        doc/gnat_ugn/building_executable_programs_with_gnat.rst,
        doc/gnat_ugn/the_gnat_compilation_model.rst, exp_ch5.ads,
        exp_ch5.adb, exp_ch6.adb, exp_ch7.adb, exp_util.adb,
        exp_util.ads, libgnarl/s-osinte__aix.adb,
        libgnarl/s-osinte__android.adb, libgnarl/s-osinte__darwin.adb,
        libgnarl/s-osinte__gnu.adb, libgnarl/s-osinte__hpux-dce.adb,
        libgnarl/s-osinte__lynxos178.adb, libgnarl/s-osinte__posix.adb,
        libgnarl/s-osinte__qnx.adb, libgnarl/s-osinte__rtems.adb,
        libgnarl/s-osinte__solaris.adb, libgnarl/s-osinte__vxworks.adb,
        libgnarl/s-osinte__x32.adb, libgnarl/s-solita.adb,
        libgnarl/s-taasde.adb, libgnarl/s-taprob.adb,
        libgnarl/s-taprop__dummy.adb, libgnarl/s-taprop__hpux-dce.adb,
        libgnarl/s-taprop__linux.adb, libgnarl/s-taprop__mingw.adb,
        libgnarl/s-taprop__posix.adb, libgnarl/s-taprop__qnx.adb,
        libgnarl/s-taprop__solaris.adb, libgnarl/s-taprop__vxworks.adb,
        libgnarl/s-tarest.adb, libgnarl/s-tasini.adb,
        libgnarl/s-taskin.adb, libgnarl/s-taspri__dummy.ads,
        libgnarl/s-taspri__hpux-dce.ads, libgnarl/s-taspri__lynxos.ads,
        libgnarl/s-taspri__mingw.ads,
        libgnarl/s-taspri__posix-noaltstack.ads,
        libgnarl/s-taspri__posix.ads, libgnarl/s-taspri__solaris.ads,
        libgnarl/s-taspri__vxworks.ads, libgnarl/s-tassta.adb,
        libgnarl/s-tasuti.adb, libgnarl/s-tposen.adb,
        libgnat/a-except.adb, libgnat/a-except.ads,
        libgnat/s-dwalin.adb, libgnat/s-dwalin.ads,
        libgnat/s-mastop.ads, libgnat/s-soflin.adb,
        libgnat/s-stalib.adb, libgnat/s-stalib.ads,
        libgnat/s-stchop.adb, libgnat/s-stchop.ads,
        libgnat/s-stchop__limit.ads, libgnat/s-traceb.ads,
        libgnat/s-traent.adb, libgnat/s-traent.ads,
        libgnat/s-trasym.adb, libgnat/s-trasym.ads,
        libgnat/s-trasym__dwarf.adb, opt.adb, opt.ads, par-prag.adb,
        sem_prag.adb, snames.ads-tmpl, switch-c.adb, targparm.adb,
        targparm.ads, usage.adb: Remove support for -gnatP and pragma
        Polling.
        * gnat_ugn.texi: Regenerate.
        * libgnat/a-excpol.adb, libgnat/a-excpol__abort.adb: Removed.

2020-10-16  Piotr Trojanek  <trojanek@adacore.com>

        * sem_ch3.adb (Array_Type_Declaration): Create itype with unique
        name.

2020-10-16  Piotr Trojanek  <trojanek@adacore.com>

        * sem_ch3.adb (Analyze_Object_Declaration): Limit scope of a
        local object by hiding it from local subprograms; simplify
        nested if-then-if-then condition for an Ada 83 restriction.
        (Array_Type_Declaration): Confirm with assertion when the else
        branch is executed.
        (Find_Type_Of_Object): Simplify membership test with a subtype
        range.

2020-10-16  Yannick Moy  <moy@adacore.com>

        * sem_prag.adb (Analyze_Global_In_Decl_Part): Update check to
        reject volatile object for reading.
        * sem_res.adb (Resolve_Actuals, Resolve_Entity_Name): Update
        check to reject volatile object for reading.
        * sem_util.adb, sem_util.ads
        (Check_Nonvolatile_Function_Profile,
        Has_Effectively_Volatile_Profile): Detect use of volatile object
        for reading.
        (Has_Enabled_Property): Accept constants as well.
        (Is_Effectively_Volatile_For_Reading): New function based on
        existing Is_Effectively_Volatile.
        (Is_Effectively_Volatile_Object_For_Reading): Adapted from the
        existing Is_Effectively_Volatile_Object, using a shared
        implementation in Is_Effectively_Volatile_Object_Shared.

2020-10-16  Gary Dismukes  <dismukes@adacore.com>

        * exp_ch7.adb (Check_Unnesting_In_Decls_Or_Stmts): In the case
        of an if-statement, call Unnest_If_Statement to determine
        whether there are nested subprograms in any of the statement
        lists of the "if" parts that require a wrapping procedure to
        handle possible up-level refeferences.
        (Unnest_Block): Call Check_Unnesting_In_Handlers to do unnesting
        of subprograms in exception handlers of the block statement.
        (Unnest_If_Statement): New procedure to traverse the parts of an
        if-statement and create wrapper procedures as needed to
        encapsulate nested subprograms that may make up-level
        references.
        (Check_Stmts_For_Subp_Unnesting): New support procedure in
        Unnest_If_Statement to traverse a statement list looking for
        top-level subprogram bodies that require wrapping inside a
        procedure (via Unnest_Statement_List) as well as possibly having
        other statements (block, loop, if) that may themselves require
        an unnesting transformation (via
        Check_Unnesting_In_Decls_Or_Stmts).
        (Unnest_Statement_List): New support procedure to traverse the
        statements of a statement list that contains subprogram bodies
        at the top level and replace the statement list with a wrapper
        procedure body encapsulating the statements and a call to the
        procedure.

2020-10-16  Arnaud Charlet  <charlet@adacore.com>

        * sem_prag.adb (Check_OK_Stream_Convert_Function): Check for
        abstract subprograms.

2020-10-16  Piotr Trojanek  <trojanek@adacore.com>

        * doc/gnat_rm/standard_and_implementation_defined_restrictions.rst
        (No_Local_Timing_Events): Package Timing_Events is a child of
        Ada.Real_Time, not of Ada.
        * gnat_rm.texi: Regenerate.

2020-10-16  Eric Botcazou  <ebotcazou@adacore.com>

        * doc/gnat_rm/implementation_defined_attributes.rst: Document the
        new Max_Integer_Size attribute.
        * gnat_rm.texi: Regenerate.
        * exp_attr.adb (Get_Integer_Type): Call Small_Integer_Type_For.
        (Expand_N_Attribute_Reference) <Attribute_Pred>: Replace selection
        code with call to Integer_Type_For.
        <Attribute_Succ>: Likewise.
        <Attribute_Val>: Likewise.
        <Attribute_Valid>: Likewise.
        <Attribute_Max_Integer_Size>: Raise Program_Error.
        * exp_ch3.adb (Expand_Freeze_Enumeration_Type): Replace selection
        code with call to Integer_Type_For.
        (Simple_Init_Initialize_Scalars_Type): Use Long_Long_Unsigned and
        System_Max_Integer_Size to size the largest integer type.
        * exp_pakd.adb (Compute_Linear_Subscript): Minor tweak.
        (Create_Packed_Array_Impl_Type): Use Small_Integer_Type_For.
        * exp_util.ads (Integer_Type_For): New function.
        (Small_Integer_Type_For): Likewise.
        * exp_util.adb (Adjust_Condition): Use Integer_Type_For.
        (Component_May_Be_Bit_Aligned): Use System_Max_Integer_Size.
        (Integer_Type_For): New function.
        (Small_Integer_Type_For): Likewise.
        (Matching_Standard_Type): Use Small_Integer_Type_For.
        (Needs_Constant_Address): Replace 64 with System_Max_Integer_Size.
        * freeze.adb (Set_Small_Size): Likewise.
        (Size_Known): Likewise.
        (Check_Suspicious_Modulus): Likewise.
        (Check_Large_Modular_Array): Likewise.
        (Freeze_Entity): Likewise.
        * layout.adb (Layout_Type): Likewise.
        * sem_aggr.adb: Add with and use clauses for Ttypes.
        (Resolve_Aggregate): Replace 64 with System_Max_Integer_Size.
        * sem_attr.ads (Attribute_Impl_Def): Add Attribute_Max_Integer_Size.
        * sem_attr.adb (Analyze_Attribute) <Attribute_Max_Integer_Size>: New
        (Eval_Attribute): Likewise.
        * sem_ch13.adb (Adjust_Record_For_Reverse_Bit_Order): Change max
        scalar size to System_Max_Integer_Size.
        (Check_Array_Type): Replace 64 with System_Max_Integer_Size and
        remove superfluous test.
        (OK_Component): Likewise.
        * sem_ch5.adb: Add with and use clauses for Ttypes.
        (Analyze_Assignment): Replace 64 with System_Max_Integer_Size.
        * snames.ads-tmpl (Name_Max_Integer_Size): New attribute name.
        (Attribute_Id): Add Attribute_Max_Integer_Size.
        * ttypes.ads (System_Max_Integer_Size): New constant.

2020-10-15  Arnaud Charlet  <charlet@adacore.com>

        * sem_ch10.adb (Install_With_Clause): Fix implementation of Ada
        2005 AI-262 by taking into account generic packages.  Minor
        reformatting.
        * libgnat/a-cbhase.ads, libgnat/a-cbhase.adb: Remove use clause
        on runtime unit spec.

2020-10-15  Arnaud Charlet  <charlet@adacore.com>

        * einfo.ads, einfo.adb (Scope_Depth_Value,
        Set_Scope_Depth_Value): Add assertions on valid nodes and update
        documentation accordingly.
        (Write_Field22_Name): Sync with change in Scope_Depth_Value.
        * sem_ch8.adb (Find_Direct_Name): Fix call to Scope_Depth_Value.

2020-10-15  Javier Miranda  <miranda@adacore.com>

        * sem_prag.adb (Analyze_Pragma): Adding semantic support of
        Standard to Default_Storage_Pool.
        * freeze.adb (Freeze_Entity): If pragma Default_Storage_Pool
        applies and it is set to Standard then use the global pool as
        the associated storage pool of the access type.

2020-10-15  Javier Miranda  <miranda@adacore.com>

        * exp_ch6.ads (Might_Have_Tasks): Update documentation.
        * exp_ch6.adb (Might_Have_Tasks): Return also true when the type
        has tasks.
        (Make_Build_In_Place_Call_In_Allocator): Code cleanup.
        * exp_ch3.adb (Ensure_Activation_Chain_And_Master,
        Expand_N_Full_Type_Declaration, Expand_N_Object_Declaration):
        Code cleanup.

2020-10-15  Steve Baird  <baird@adacore.com>

        * checks.adb (Apply_Predicate_Check): Generate "infinite
        recursion" warning message even if run-time predicate checking
        is disabled.
        * exp_ch6.adb (Expand_Simple_Function_Return): In testing
        whether the returned expression is a function call, look for the
        case where the call has been transformed into a dereference of
        an access value that designates the result of a function call.
        * sem_ch3.adb (Analyze_Object_Declaration): Legality checking
        for a static expression is unaffected by assertion policy (and,
        in particular, enabling/disabling of subtype predicates.  To get
        the right legality checking, we need to call
        Check_Expression_Against_Static_Predicate for a static
        expression even if predicate checking is disabled for the given
        predicate-bearing subtype.  On the other hand, we don't want to
        call Make_Predicate_Check unless predicate checking is enabled.
        * sem_ch7.adb (Uninstall_Declarations.Preserve_Full_Attributes):
        Preserve the Predicates_Ignored attribute.
        * sem_eval.adb (Check_Expression_Against_Static_Predicate):
        Previously callers ensured that this procedure was only called
        if predicate checking was enabled; that is no longer the case,
        so predicates-disabled case must be handled.
        * sem_prag.adb (Analyze_Pragma): Fix bug in setting
        Predicates_Ignored attribute in Predicate pragma case.

2020-10-15  Ed Schonberg  <schonberg@adacore.com>

        * freeze.adb (Freeze_Fixed_Point_Type): Do not scale the bounds
        of a declared subtype using the 'Small of the type;  this is
        done during resolution of the bound itself, unlike what is done
        for the bounds of the base type, which are used to determine its
        required size. Previous code performed this scaling twice,
        leading to meaningless values for such a subtype.

2020-10-15  Piotr Trojanek  <trojanek@adacore.com>

        * sem_util.adb (Bad_Predicated_Subtype_Use): Emit an
        unconditional error, not a conditional warning.

2020-10-15  Piotr Trojanek  <trojanek@adacore.com>

        * sem_ch3.adb (Process_Subtype): Combine guards for
        Null_Exclusion_Present in May_Have_Null_Exclusion; use this
        combined guard when checking AI-231.

2020-10-15  Piotr Trojanek  <trojanek@adacore.com>

        * sem_ch3.adb (Process_Subtype): Sync May_Have_Null_Exclusion
        with assertion in Null_Exclusion_Present; clarify the scope of
        local variables.

2020-10-15  Piotr Trojanek  <trojanek@adacore.com>

        * sem_ch3.adb (Analyze_Subtype_Declaration): Fix style.
        (Make_Index): Refactor to avoid repeated detection of subtype
        indication; add comment.

2020-10-15  Piotr Trojanek  <trojanek@adacore.com>

        * sem_prag.adb (Is_Acceptable_Dim3): Use Is_RTE to not pull CUDA
        package unless necessary; rename local Tmp variable; iterate
        with procedural Next.

2020-10-15  Piotr Trojanek  <trojanek@adacore.com>

        * sem_ch3.adb (Array_Type_Declaration): Refine type of a local
        variable.
        (Make_Index): Simplify to avoid assignment with a type entity
        and then backtracking by reassigning to Empty; remove excessive
        whitespace.
        * sem_ch9.adb (Analyze_Entry_Body): Remove extra parens.

2020-10-15  Piotr Trojanek  <trojanek@adacore.com>

        * sem_ch3.adb (Access_Subprogram_Declaration): Remove extra
        parens.
        (Make_Index): Remove excessive calls to Is_Type.

2020-10-15  Arnaud Charlet  <charlet@adacore.com>

        * sem_util.adb (Enter_Name): Remove unnecessary conditions in
        Enter_Name that come from the beginning of times.

2020-10-15  Bob Duff  <duff@adacore.com>

        * exp_ch6.adb (Expand_Simple_Function_Return): Remove DSP part
        of comment, and reformat.

2020-10-15  Boris Yakobowski  <yakobowski@adacore.com>

        * exp_attr.adb (Expand_N_Attribute_Reference): Do not expand
        'Initialized in CodePeer mode.

2020-10-15  Arnaud Charlet  <charlet@adacore.com>

        * sem_ch12.adb (Reset_Entity): Protect against malformed tree.

2020-10-15  Arnaud Charlet  <charlet@adacore.com>

        * sem_ch13.adb (Add_Predicates): Prevent analyzing twice the
        same pragma in case an inner package references the type with a
        predicate (as opposed to defining the type).

2020-10-15  Eric Botcazou  <ebotcazou@adacore.com>

        * libgnat/a-cfinve.adb (Int): Use subtype of Long_Long_Integer.
        * libgnat/a-cofove.adb (Int): Likewise.
        * libgnat/a-cgcaso.adb (T): Likewise.
        * libgnat/a-cogeso.adb (T): Likewise.
        * libgnat/g-debpoo.ads (Byte_Count): Use Long_Long_Integer'Size.

2020-10-15  Piotr Trojanek  <trojanek@adacore.com>

        * sem_ch12.adb: Replace list of N_Defining_... enumerations with
        N_Entity.

2020-10-15  Piotr Trojanek  <trojanek@adacore.com>

        * sem_ch3.ads, sem_ch3.adb (Make_Index): Refined type of
        parameter.
        (Constrain_Index): Likewise.
        (Array_Type_Declaration): Refine type of a local counter
        variable; remove a trivially useless initialization.

2020-10-15  Piotr Trojanek  <trojanek@adacore.com>

        * sem_ch3.adb (Analyze_Subtype_Declaration): Recognize both
        identifiers and expanded names; use high-level Is_Scalar_Type
        instead of low-level membership test.

2020-10-15  Arnaud Charlet  <charlet@adacore.com>

        * sem_eval.adb (Eval_Intrinsic_Call, Fold_Shift): Add support
        for Shift_Right_Arithmetic and for signed integers.
        * exp_ch4.adb (Expand_N_Op_Rotate_Left,
        Expand_N_Op_Rotate_Right, Expand_N_Op_Shift_Left,
        Expand_N_Op_Shift_Right_Arithmetic): Minor reformatting and code
        cleanup to ensure a consistent handling. Update comments and add
        assertion.

2020-10-15  Bob Duff  <duff@adacore.com>

        * sem_ch13.adb (Visible_Component): Enable this code for task
        and protected types, as well as record and private types.
        * sem_ch13.ads (Replace_Type_References_Generic): Update
        comment.  Move the efficiency comment into the body, because
        it's about the implementation.

2020-10-15  Arnaud Charlet  <charlet@adacore.com>

        * par-ch13.adb (Get_Aspect_Specifications): Generate a warning
        rather than an error on unknown aspects unless -gnatd2 is used.
        (Aspect_Specifications_Present): Improve detection of unknown
        aspects.
        * debug.adb (Debug_Flag_2): Update document.

2020-10-15  Arnaud Charlet  <charlet@adacore.com>

        * sem_res.adb (Resolve_Call): Do not try to inline intrinsic
        calls.

2020-10-15  Ed Schonberg  <schonberg@adacore.com>

        * exp_aggr.adb (Expand_N_Aggregate): A record aggregate requires
        a non-private type.
        * sem_ch13.adb (Valid_Assign_Indexed): New subprogram local to
        Resolve_Aspect_Aggregate, to handle the case when the
        corresponding name appearing in the aspect specification for an
        indexed aggregate is an overloaded operation.
        * libgnat/a-convec.ads, libgnat/a-convec.adb,
        libgnat/a-coinve.ads, libgnat/a-coinve.adb,
        libgnat/a-cobove.ads, libgnat/a-cobove.adb,
        libgnat/a-cdlili.ads, libgnat/a-cdlili.adb,
        libgnat/a-cbdlli.ads, libgnat/a-cbdlli.adb,
        libgnat/a-cohama.ads, libgnat/a-cihama.ads,
        libgnat/a-cbhama.ads, libgnat/a-cborma.ads,
        libgnat/a-ciorma.ads, libgnat/a-coorma.ads,
        libgnat/a-cihase.ads, libgnat/a-cohase.ads,
        libgnat/a-cbhase.ads, libgnat/a-cborse.ads,
        libgnat/a-ciorse.ads, libgnat/a-coorse.ads: Add Ada_2020 aspect
        Aggregate to types declared in standard containers, as well as
        new subprograms where required.

2020-10-15  Arnaud Charlet  <charlet@adacore.com>

        * libgnat/g-arrspl.ads, libgnat/g-arrspl.adb (Create,
        First_Cursor, Advance, Has_Element): New.

2020-10-15  Arnaud Charlet  <charlet@adacore.com>

        * Makefile.rtl: Add target pair for interfac.ads.
        * libgnat/interfac.ads: Add a comment.
        * libgnat/interfac__2020.ads: New, used for bootstrap purposes.
        * sem_util.adb (Is_Static_Function): Always return False for pre
        Ada 2020 to e.g. ignore the Static aspect in Interfaces for
        Ada < 2020.

2020-10-15  Piotr Trojanek  <trojanek@adacore.com>

        * exp_util.adb (Remove_Side_Effects): Move special-casing for
        GNATprove to be applied to all object declarations.

2020-10-12  Alexandre Oliva  <oliva@adacore.com>

        * libgnat/a-ngelfu.ads (Sin, Cos): Make the single-argument
        functions inline.

2020-10-11  Alexandre Oliva  <oliva@adacore.com>

        * libgnat/a-numaux.ads: Make all imports Intrinsic.
        * libgnat/a-numaux__darwin.ads: Likewise.
        * libgnat/a-numaux__libc-x86.ads: Likewise.
        * libgnat/a-numaux__vxworks.ads: Likewise.

2020-09-28  Eric Botcazou  <ebotcazou@adacore.com>

        * gcc-interface/trans.c (Subprogram_Body_to_gnu): Set the end locus
        of body and declaration earlier.

2020-09-28  Eric Botcazou  <ebotcazou@adacore.com>

        * gcc-interface/decl.c (maybe_saturate_size): Add ALIGN parameter
        and round down the result to ALIGN.
        (gnat_to_gnu_entity): Adjust calls to maybe_saturate_size.

2020-09-14  Jakub Jelinek  <jakub@redhat.com>

        * gcc-interface/trans.c (gigi): Adjust build_optimization_node
        caller.

2020-09-12  Eric Botcazou  <ebotcazou@adacore.com>

        * fe.h: Fix pilot error in previous change.
        * gcc-interface/gigi.h (enum standard_datatypes): Add ADT_mulv128_decl.
        (mulv128_decl): New macro.
        (get_target_long_long_long_size): Declare.
        * gcc-interface/decl.c (gnat_to_gnu_entity): Use a maximum size of
        128 bits for discrete types if Enable_128bit_Types is true.
        * gcc-interface/targtyps.c: Include target.h.
        (get_target_long_long_long_size): New function.
        * gcc-interface/trans.c (gigi): Initialize mulv128_decl if need be.
        (build_binary_op_trapv): Call it for 128-bit multiplication.
        * gcc-interface/utils.c (make_type_from_size): Enforce a maximum
        size of 128 bits if Enable_128bit_Types is true.

2020-09-12  Eric Botcazou  <ebotcazou@adacore.com>

        * gcc-interface/trans.c (lvalue_for_aggr_p) <N_Object_Declaration>:
        Return false unconditionally.

2020-09-12  Eric Botcazou  <ebotcazou@adacore.com>

        * gcc-interface/trans.c (gnat_to_gnu) <N_Object_Declaration>: Clear
        the SLOC of the expression of a tag.

2020-09-12  Eric Botcazou  <ebotcazou@adacore.com>

        * gcc-interface/decl.c (gnat_to_gnu_entity) <E_Variable>: Only give
        a warning for the overlay of an aliased array with an unconstrained
        nominal subtype if the address is absolute.

2020-09-11  Eric Botcazou  <ebotcazou@adacore.com>

        * gcc-interface/utils.c (type_has_variable_size): New function.
        (create_field_decl): In the packed case, also force byte alignment
        when the type of the field has variable size.

2020-09-11  Eric Botcazou  <ebotcazou@adacore.com>

        * gcc-interface/misc.c (get_array_bit_stride): Return TYPE_ADA_SIZE
        for record and union types.

2020-09-11  Eric Botcazou  <ebotcazou@adacore.com>

        * gcc-interface/misc.c (gnat_get_fixed_point_type): Bail out only
        when the GNAT encodings are specifically used.

2020-09-11  Eric Botcazou  <ebotcazou@adacore.com>

        * gcc-interface/decl.c (gnat_to_gnu_entity) <E_Array_Subtype>: Only
        create extra subtypes for discriminants if the RM size of the base
        type of the index type is lower than that of the index type.

2020-09-10  Eric Botcazou  <ebotcazou@adacore.com>

        * gcc-interface/decl.c (set_rm_size): Do not take into account the
        Value_Size clause if it is not for the entity itself.

2020-09-10  Eric Botcazou  <ebotcazou@adacore.com>

        * gcc-interface/decl.c (build_subst_list): For a definition, make
        sure to instantiate the SAVE_EXPRs generated by the elaboration of
        the constraints in front of the elaboration of the type itself.

2020-09-10  Eric Botcazou  <ebotcazou@adacore.com>

        * gcc-interface/misc.c: Include tree-pass.h.
        (internal_error_function): Call emergency_dump_function.

2020-09-03  Arnaud Charlet  <charlet@adacore.com>

        * fe.h, opt.ads (Enable_128bit_Types): New.
        * stand.ads (Standard_Long_Long_Long_Integer,
        S_Long_Long_Long_Integer): New.

2020-09-03  Arnaud Charlet  <charlet@adacore.com>

        * sem_util.ads, sem_util.adb (Get_Fullest_View): New procedure.
        * exp_unst.adb (Check Static_Type): Do all processing on fullest
        view of specified type.

2020-08-27  Martin Liska  <mliska@suse.cz>

        * gcc-interface/trans.c (gigi): Set exact argument of a vector
        growth function to true.
        (Attribute_to_gnu): Likewise.

2020-07-27  Alexandre Oliva  <oliva@adacore.com>

        * switch.adb (Is_Internal_GCC_Switch): Revert accidental
        reintroduction of auxbase and auxbase-strip.

2020-07-27  Javier Miranda  <miranda@adacore.com>

        * sem_res.adb (Resolve_Actuals): Restrict the check on matching
        aliased components to view conversions of array types that are
        not placed in an instance. In such case at runtime an object is
        created.
        * sem_util.ads (Is_Actual_In_Out_Parameter, Is_View_Conversion):
        New subprograms.
        * sem_util.adb (Is_Actual_In_Out_Parameter, Is_View_Conversion):
        New subprograms.

2020-07-27  Arnaud Charlet  <charlet@adacore.com>

        * lib-xref.adb (Generate_Reference): Protect against malformed
        tree in case of severe errors.
        * sem_ch8.adb (Add_Implicit_Operator): Ditto.

2020-07-27  Arnaud Charlet  <charlet@adacore.com>

        * opt.ads (Ada_Version_Runtime): Set to Ada_2020.
        * sem_ch3.adb (Analyze_Subtype_Declaration): Propagate
        Is_Independent flag to subtypes.
        * libgnarl/s-taprop__linux.adb: Adapt to Ada 2020 warning.
        * libgnat/a-nbnbin.adb, libgnat/a-nbnbin.ads,
        libgnat/a-nbnbin__gmp.adb, libgnat/a-nbnbre.adb,
        libgnat/a-nbnbre.ads, libgnat/a-stobbu.adb,
        libgnat/a-stobbu.ads, libgnat/a-stobfi.adb,
        libgnat/a-stobfi.ads, libgnat/a-stoubu.adb,
        libgnat/a-stoubu.ads, libgnat/a-stoufi.adb,
        libgnat/a-stoufi.ads, libgnat/a-stoufo.adb,
        libgnat/a-stoufo.ads, libgnat/a-stouut.adb,
        libgnat/a-stouut.ads, libgnat/a-strsto.ads,
        libgnat/a-ststbo.adb, libgnat/a-ststbo.ads,
        libgnat/a-ststun.adb, libgnat/a-ststun.ads,
        libgnat/a-stteou.ads, libgnat/s-aoinar.ads,
        libgnat/s-aomoar.ads, libgnat/s-atopex.ads,
        libgnat/s-putaim.adb, libgnat/s-putaim.ads,
        libgnat/s-putima.adb, libgnat/s-putima.ads: Remove pragma
        Ada_2020, now redundant.

2020-07-27  Justin Squirek  <squirek@adacore.com>

        * exp_ch6.adb (Expand_Call_Helper): Modify addition of the extra
        accessibility parameter to take into account the extra
        accessibility of formals within the calling subprogram.

2020-07-27  Bob Duff  <duff@adacore.com>

        * exp_imgv.adb (Expand_Image_Attribute): Add Root_Type, so
        constrained subtypes work.

2020-07-27  Ghjuvan Lacambre  <lacambre@adacore.com>

        * exp_prag.adb (Arg1, Arg2, Arg3): Removed.
        (Arg_N): New function.

2020-07-27  Arnaud Charlet  <charlet@adacore.com>

        * sem_ch8.adb (Analyze_Object_Renaming): Allow values in Ada
        2020 mode.

2020-07-27  Arnaud Charlet  <charlet@adacore.com>

        * sem_res.adb (Resolve_Actuals): Refine 6.4.1 rules as per
        AI12-0377.

2020-07-27  Bob Duff  <duff@adacore.com>

        * errout.ads, errout.adb (Error_Msg_Ada_2020_Feature): New
        procedure analogous to Error_Msg_Ada_2012_Feature.
        * sem_attr.adb (Analyze_Image_Attribute): Use
        Error_Msg_Ada_2012_Feature and Error_Msg_Ada_2020_Feature to
        indicate that Object'Image is allowed in Ada 2012, and that
        'Image is allowed for any type in Ada 2020.

2020-07-27  Dmitriy Anisimkov  <anisimko@adacore.com>

        * libgnat/a-strunb.adb (Sum, Mul, Saturated_Sum, Saturated_Mul):
        New routines.  Use them when resulting string size more that
        length of the strings in parameters.
        (Unbounded_Slice): Use "- 1" instead of "+ 1" in opposite side
        of condition to avoid overflow.
        * libgnat/a-strunb__shared.adb (Sum, Mul): New routines.
        (Allocate): New routine with 2 parameters.  Use routine above
        when resulting string size more that length of the strings in
        parameters.
        (Aligned_Max_Length): Do not try to align to more than Natural'Last.
        (Unbounded_Slice): Use "- 1" instead of "+ 1" in opposite side
        of condition to avoid overflow.

2020-07-27  Arnaud Charlet  <charlet@adacore.com>

        * sem_attr.adb (Resolve_Attribute): Remove dead code.

2020-07-27  Arnaud Charlet  <charlet@adacore.com>

        * aspects.adb, atree.adb, atree.ads, checks.adb, contracts.adb,
        einfo.adb, errout.adb, exp_aggr.adb, exp_attr.adb, exp_cg.adb,
        exp_ch11.adb, exp_ch2.adb, exp_ch3.adb, exp_ch4.adb,
        exp_ch5.adb, exp_ch6.adb, exp_ch7.adb, exp_ch8.adb, exp_ch9.adb,
        exp_dbug.adb, exp_disp.adb, exp_intr.adb, exp_pakd.adb,
        exp_prag.adb, exp_put_image.adb, exp_smem.adb, exp_tss.adb,
        exp_unst.adb, exp_util.adb, freeze.adb, ghost.adb, gnat1drv.adb,
        inline.adb, lib-writ.adb, lib-xref-spark_specific.adb,
        lib-xref.adb, namet.adb, namet.ads, nlists.adb, par-ch10.adb,
        par-ch2.adb, par-ch3.adb, par-ch4.adb, par-ch5.adb, par-ch6.adb,
        par-prag.adb, par-util.adb, par_sco.adb, pprint.adb,
        repinfo.adb, restrict.adb, rtsfind.adb, scil_ll.adb, sem.adb,
        sem_aggr.adb, sem_attr.adb, sem_aux.adb, sem_cat.adb,
        sem_ch10.adb, sem_ch11.adb, sem_ch12.adb, sem_ch13.adb,
        sem_ch3.adb, sem_ch4.adb, sem_ch5.adb, sem_ch6.adb, sem_ch7.adb,
        sem_ch8.adb, sem_ch9.adb, sem_dim.adb, sem_disp.adb,
        sem_dist.adb, sem_elab.adb, sem_elim.adb, sem_eval.adb,
        sem_intr.adb, sem_mech.adb, sem_prag.adb, sem_res.adb,
        sem_scil.adb, sem_type.adb, sem_util.adb, sem_warn.adb,
        sinfo.adb, sinfo.ads, sprint.adb, styleg.adb, tbuild.adb,
        treepr.adb (Nkind_In, Nam_In, Ekind_In): Removed, replaced by
        membership tests.

2020-07-27  Gary Dismukes  <dismukes@adacore.com>

        * sem_prag.adb (Analyze_Pragma, Pragma_Max_Entry_Queue_Length):
        Refine error message to indicate that the pragma must apply to
        an entry declaration, not just an entry.

2020-07-27  Javier Miranda  <miranda@adacore.com>

        * exp_ch6.adb (Make_Build_In_Place_Iface_Call_In_Allocator):
        Revert previous patch, and add a missing type conversion to
        displace the pointer to the allocated object to reference the
        target dispatch table.

2020-07-27  Javier Miranda  <miranda@adacore.com>

        * sem_res.adb (Resolve_Actuals): Restore restrictive check on
        view conversions which required matching value of
        Has_Aliased_Components of formals and actuals. Required to avoid
        the regression of ACATS b460005.

2020-07-27  Eric Botcazou  <ebotcazou@adacore.com>

        * sem_ch12.adb (Instantiate_Package_Body): Add commentary for a
        nesting issue with parent handling and private view switching.
        (Switch_View): Do not skip specific private-dependent subtypes.

2020-07-27  Patrick Bernardi  <bernardi@adacore.com>

        * Makefile.rtl: Remove X86_TARGET_PAIRS for x86-lynx178elf.

2020-07-27  Ed Schonberg  <schonberg@adacore.com>

        * sem_ch13.adb (Analyze_Address_Specification_Clause): Do not
        emit a warning when a constant declaration in a generic unit
        overlays a generic In_Parameter.

2020-07-27  Gary Dismukes  <dismukes@adacore.com>

        * sem_ch3.adb (Check_Abstract_Overriding): Remove Scope
        comparison test from test related to initial implementation of
        AI12-0042, plus remove the related ??? comment.
        (Derive_Subprogram): Add test requiring that the type extension
        appear in the visible part of its enclosing package when
        checking the overriding requirement of 7.3.2(6.1/4), as
        clarified by AI12-0382.

2020-07-27  Piotr Trojanek  <trojanek@adacore.com>

        * exp_spark.adb (Expand_SPARK_N_Attribute_Reference) Extend
        existing workaround to 'Pos.

2020-07-27  Bob Duff  <duff@adacore.com>

        * libgnat/s-rannum.ads, libgnat/s-rannum.adb: Add Put_Image.
        This will be inherited by the language-defined packages
        Ada.Numerics.Discrete_Random and Ada.Numerics.Float_Random.
        * libgnat/a-convec.ads, libgnat/a-convec.adb: Add Put_Image.
        * libgnat/s-putima.ads: Add pragma Preelaborate, so this can be
        imported into containers packages.
        * libgnat/s-putima.adb: Move Digit to private part; otherwise
        reference to Base is illegal in Preelaborate generic.
        * exp_put_image.adb (Build_Record_Put_Image_Procedure): Use the
        base type.

2020-07-23  Arnaud Charlet  <charlet@adacore.com>

        * aspects.ads: Declare CUDA_Global as aspect.
        * einfo.ads: Use Flag118 for the Is_CUDA_Kernel flag.
        (Set_Is_CUDA_Kernel): New function.
        (Is_CUDA_Kernel): New function.
        * einfo.adb (Set_Is_CUDA_Kernel): New function.
        (Is_CUDA_Kernel): New function.
        * par-prag.adb (Prag): Ignore Pragma_CUDA_Execute and
        Pragma_CUDA_global.
        * rtsfind.ads: Define CUDA.Driver_Types.Stream_T and
        CUDA.Vector_Types.Dim3 entities
        * rtsfind.adb: Define CUDA_Descendant subtype.
        (Get_Unit_Name): Handle CUDA_Descendant packages.
        * sem_prag.ads: Mark CUDA_Global as aspect-specifying pragma.
        * sem_prag.adb (Analyze_Pragma): Validate Pragma_CUDA_Execute and
        Pragma_CUDA_Global.
        * snames.ads-tmpl: Define Name_CUDA_Execute and Name_CUDA_Global.

2020-07-23  Arnaud Charlet  <charlet@adacore.com>

        * sem_ch13.ads (Same_Representation): Renamed as
        Has_Compatible_Representation because now the order of the arguments
        are taken into account; its formals are also renamed as Target_Type
        and Operand_Type.
        * sem_ch13.adb (Same_Representation): Renamed and moved to place the
        routine in alphabetic order.
        * sem_attr.adb (Prefix_With_Safe_Accessibility_Level): New subprogram.
        (Resolve_Attribute): Check that the prefix of attribute Access
        does not have a value conversion of an array type.
        * sem_res.adb (Resolve_Actuals): Remove restrictive check on view
        conversions which required matching value of Has_Aliased_Components of
        formals and actuals.
        * exp_ch4.adb (Handle_Changed_Representation): Update call to
        Same_Representation.
        (Expand_N_Type_Conversion): Update call to Same_Representation.
        * exp_ch5.adb (Change_Of_Representation): Update call to
        Same_Representation.
        * exp_ch6.adb (Add_Call_By_Copy_Code): Update call to
        Same_Representation.
        (Expand_Actuals): Update call to Same_Representation.
        (Expand_Call_Helper): Update call to Same_Representation.

2020-07-23  Arnaud Charlet  <charlet@adacore.com>

        * output.ads (Push_Output, Pop_Output): New procedures.
        * output.adb (FD_Array, FD_Stack, FD_Stack_Idx): New type and vars.
        (Push_Output, Pop_Output): New procedures.

2020-07-16  Javier Miranda  <miranda@adacore.com>

        * exp_ch3.adb (Expand_N_Full_Type_Declaration): Ensure a _master
        declaration on limited types that might have tasks.
        * exp_ch9.adb (Build_Master_Renaming): For private types, if we
        are processing declarations in the private part, ensure that
        master is inserted before its full declaration; otherwise the
        master renaming may be inserted in the public part of the
        package (and hence before the declaration of its _master
        variable).

2020-07-16  Arnaud Charlet  <charlet@adacore.com>

        * sem_ch8.adb (Analyze_Subprogram_Renaming): A renames-as-body
        freezes the expression of any expression function that it
        renames.

2020-07-16  Ed Schonberg  <schonberg@adacore.com>

        * sem_aggr.adb (Resolve_Container_Aggregate): Add semantic
        checks for indexed aggregates, including component associations
        and iterated component associations.
        * exp_aggr.adb (Expand_Iterated_Component): New subprogram,
        subsidiary of Expand_Container_Aggreggate, used for positional,
        named, and indexed aggregates.
        (Aggregate_Size): New subprogram to precompute the size of an
        indexed aggregate prior to call to allocate it.
        (Expand_Range_Component): New subprogram so generate loop for a
        component association given by a range or a subtype name in an
        indexed aggregate.

2020-07-16  Bob Duff  <duff@adacore.com>

        * bindo-diagnostics.adb (Output_Invocation_Related_Suggestions):
        Use Cumulative_Restrictions.Set, because Restriction_Active only
        works at compile time.

2020-07-16  Bob Duff  <duff@adacore.com>

        * gnatbind.adb (Gnatbind): For No_Tasks_Unassigned_To_CPU, check
        that CPU has been set on the main subprogram.
        (Restriction_Could_Be_Set): Don't print
        No_Tasks_Unassigned_To_CPU if it would violate the
        above-mentioned rule. Up to now, all restrictions were checked
        by the compiler, with the binder just checking for consistency.
        But the compiler can't know which subprogram is the main, so
        it's impossible to check this one at compile time.
        * restrict.ads, restrict.adb: Misc refactoring. Change Warning
        to Warn, for consistency, since most already use Warn.
        (Set_Restriction): New convenience routine.
        * sem_ch13.adb (Attribute_CPU): Check
        No_Tasks_Unassigned_To_CPU.
        * sem_prag.adb (Pragma_CPU): Check No_Tasks_Unassigned_To_CPU.
        Misc refactoring.
        * tbuild.ads, tbuild.adb (Sel_Comp): New functions for building
        selected components.

2020-07-16  Eric Botcazou  <ebotcazou@adacore.com>

        * impunit.adb (Non_Imp_File_Names_95): Remove duplicate entry.

2020-07-16  Arnaud Charlet  <charlet@adacore.com>

        * Makefile.rtl: replace a-numaux__x86.ads by
        a-numaux__libc-x86.ads and a-numaux__x86.adb by
        a-numaux__dummy.adb.
        * libgnat/a-numaux__x86.ads, libgnat/a-numaux__x86.adb: Removed.
        * libgnat/a-numaux__dummy.adb: New.

2020-07-16  Ed Schonberg  <schonberg@adacore.com>

        * sem_ch12.adb (Load_Parent_Of_Generic): If an ancestor is an
        instance whose source appears within a formal package of the
        current unit, there is no body of the ancestor needed to
        complete the current generic compilation.

2020-07-16  Doug Rupp  <rupp@adacore.com>

        * libgnat/s-thread__ae653.adb (taskVarAdd): Defunct, so remove.
        (Current_ATSD):  Make it a TLS variable.
        (OK): Move to package scope.
        (System.Storage_Elements): Import and Use.

2020-07-16  Eric Botcazou  <ebotcazou@adacore.com>

        * exp_ch9.adb (Expand_N_Accept_Statement): Set Parent of the
        created block entity to the created block statement.

2020-07-16  Arnaud Charlet  <charlet@adacore.com>

        * scng.adb (Scan): Detect wide characters not in NFKC.
        * libgnat/a-chahan.adb, libgnat/a-chahan.ads,
        libgnat/a-wichha.adb, libgnat/a-wichha.ads,
        libgnat/a-wichun.adb, libgnat/a-wichun.ads,
        libgnat/a-zchhan.adb, libgnat/a-zchhan.ads,
        libgnat/a-zchuni.adb, libgnat/a-zchuni.ads (Is_NFKC): New.
        * libgnat/s-utf_32.ads, libgnat/s-utf_32.adb (Is_UTF_32_NFKC):
        New.

2020-07-16  Bob Duff  <duff@adacore.com>

        * libgnat/s-rident.ads (Restriction_Id): Add
        No_Tasks_Unassigned_To_CPU.

2020-07-16  Bob Duff  <duff@adacore.com>

        * exp_aggr.adb (Max_Aggregate_Size): Use the small size of 64
        when copying is needed (for example, for the initialization of a
        local variable, and for assignment statements). Use the larger
        size when static allocation can be done without copying.

2020-07-16  Bob Duff  <duff@adacore.com>

        * libgnat/s-rident.ads (No_Dynamic_CPU_Assignment): New
        restriction. Add it to all relevant profiles.
        * sem_ch13.adb (Attribute_CPU): Check No_Dynamic_CPU_Assignment
        restriction.
        (Attribute_CPU, Attribute_Dispatching_Domain,
        Attribute_Interrupt_Priority): Remove error checks -- these are
        checked in the parser.
        * sem_prag.adb (Pragma_CPU): Check No_Dynamic_CPU_Assignment
        restriction.  We've got a little violation of DRY here.
        * sem.ads, sem_ch3.ads: Minor comment fix.

2020-07-16  Gary Dismukes  <dismukes@adacore.com>

        * sem_ch4.adb (Try_Container_Indexing): When the prefix type is
        an access type, change it to the designated type, change the
        prefix to an explicit dereference, and emit a ?d? warning for
        the implicit dereference. Include a ??? comment questioning
        whether this is the right context in which to perform the
        implicit dereferencing.

2020-07-16  Arnaud Charlet  <charlet@adacore.com>

        * sem_ch13.adb (Validate_Literal_Aspect): Ensure that the
        parameter is not aliased. Minor reformatting.
        * sem_util.adb (Statically_Names_Object): Update comment.

2020-07-16  Ghjuvan Lacambre  <lacambre@adacore.com>

        * sem_case.adb (Build_Choice): Set Is_Static_Expression flag.
        (Lit_Of): Update specification to mention Is_Static_Expression
        flag.
        * sem_ch13.adb (Membership_Entry): Check for N_Others_Choice.

2020-07-16  Bob Duff  <duff@adacore.com>

        * sem_ch6.adb (Null_Exclusions_Match): New function to check
        that the null exclusions match, including in the case addressed
        by this AI.
        (Check_Conformance): Remove calls to Comes_From_Source
        when calling Null_Exclusions_Match. These are not
        needed, as indicated by an ancient "???" comment.

2020-07-16  Justin Squirek  <squirek@adacore.com>

        * exp_ch4.adb (Expand_N_Type_Conversion): Remove flawed test for
        whether "statically deeper" accessibility rules apply to a given
        target type and instead use the new routine
        Statically_Deeper_Relation_Applies.
        (Statically_Deeper_Relation_Applies): Created to centralize the
        calculation of whether a target type within a conversion must
        have static accessibility checks.
        * sem_ch13.adb (Check_One_Function): Minor comment revision.

2020-07-16  Eric Botcazou  <ebotcazou@adacore.com>

        * fe.h (Is_OK_Static_Expression): Delete.
        * sem_eval.ads (Is_OK_Static_Expression): Remove WARNING note.

2020-07-16  Justin Squirek  <squirek@adacore.com>

        * einfo.adb, einfo.ads (Is_Named_Access_Type): Created for
        readability.
        * sem_ch6.adb (Check_Return_Construct_Accessibility): Add
        special cases for formals.
        * sem_util.adb (Object_Access_Level): Add handling of access
        attributes and named access types in the general case.

2020-07-16  Piotr Trojanek  <trojanek@adacore.com>

        * sem_case.adb (Build_Choice): Simplify.

2020-07-16  Arnaud Charlet  <charlet@adacore.com>

        * frontend.adb: Disable Initialize_Scalars on runtime files.

2020-07-16  Ghjuvan Lacambre  <lacambre@adacore.com>

        * sem_ch3.adb (Analyze_Object_Declaration): Add
        Comes_From_Source call.

2020-07-16  Javier Miranda  <miranda@adacore.com>

        * exp_attr.adb (Expand_Access_To_Protected_Op): Initialize
        variable Sub to Empty to avoid false positive reported by
        Codepeer.

2020-07-16  Arnaud Charlet  <charlet@adacore.com>

        * sem_ch8.adb (Note_Redundant_Use): Add missing warning tag.
        Do not check for redundant use clauses in predefined units to avoid
        misleading warnings that may occur as part of a rtsfind load.

2020-07-16  Javier Miranda  <miranda@adacore.com>

        * exp_attr.adb (Has_By_Protected_Procedure_Prefixed_View): New
        subprogram.
        (Expand_Access_To_Protected_Op): Adding support for prefixed
        class-wide view with By_Protected_Procedure convention.
        * sem_attr.adb (Get_Convention): New subprogram.
        (Get_Kind): Adapted to use Get_Convention.
        * sem_ch4.adb (Try_By_Protected_Procedure_Prefixed_View): New
        subprogram.
        (Analyze_Selected_Component): Invoke
        Try_By_Protected_Procedure_Prefixed_View.
        * sem_util.ads (Is_By_Protected_Procedure): New subprogram.
        * sem_util.adb (Is_By_Protected_Procedure): New subprogram.

2020-07-16  Arnaud Charlet  <charlet@adacore.com>

        * libgnat/s-ststop.ads: Fix typo.
        * libgnat/s-ststop.adb (Read, Write): Fix block number
        computation to avoid overflows in case of large strings.

2020-07-16  Arnaud Charlet  <charlet@adacore.com>

        * libgnat/s-genbig.adb ("**"): Remove capacity limit check.
        Improve code by using an extended return.
        (Normalize): Perform capacity limit check here instead which is
        the centralized place where (potentially large) big integers are
        allocated.

2020-07-16  Gary Dismukes  <dismukes@adacore.com>

        * exp_ch4.adb (Expand_N_Type_Conversion): Handle the case of
        applying an invariant check for a conversion to a class-wide
        type whose root type has a type invariant, when the conversion
        appears within the immediate scope of the type and the
        expression is of a specific tagged type.
        * sem_ch3.adb (Is_Private_Primitive): New function to determine
        whether a primitive subprogram is a private operation.
        (Check_Abstract_Overriding): Enforce the restriction imposed by
        AI12-0042 of requiring overriding of an inherited nonabstract
        private operation when the ancestor has a class-wide type
        invariant and the ancestor's private operation is visible.
        (Derive_Subprogram): Set Requires_Overriding on a subprogram
        inherited from a visible private operation of an ancestor to
        which a Type_Invariant'Class expression applies.

2020-07-15  Piotr Trojanek  <trojanek@adacore.com>

        * sem_util.adb (Find_Overlaid_Entity): Fix style in comment.
        (Note_Possible_Modification): Simplify repeated calls to Ekind.

2020-07-15  Eric Botcazou  <ebotcazou@adacore.com>

        * exp_aggr.adb (Flatten): Adjust description.
        (Convert_To_Positional): Remove obsolete ??? comment and use
        Compile_Time_Known_Value in the final test.

2020-07-15  Arnaud Charlet  <charlet@adacore.com>

        * par-ch4.adb (P_Iterated_Component_Association): Extended to
        recognzize the similar Iterated_Element_Association. This node
        is only generated when an explicit Key_Expression is given.
        Otherwise the distinction between the two iterated forms is done
        during semantic analysis.
        * sinfo.ads: New node N_Iterated_Element_Association, for
        Ada202x container aggregates.  New field Key_Expression.
        * sinfo.adb: Subprograms for new node and newn field.
        * sem_aggr.adb (Resolve_Iterated_Component_Association): Handle
        the case where the Iteration_Scheme is an
        Iterator_Specification.
        * exp_aggr.adb (Wxpand_Iterated_Component): Handle a component
        with an Iterated_Component_Association, generate proper loop
        using given Iterator_Specification.
        * exp_util.adb (Insert_Axtions): Handle new node as other
        aggregate components.
        * sem.adb, sprint.adb: Handle new node.
        * tbuild.adb (Make_Implicit_Loop_Statement): Handle properly a
        loop with an Iterator_ specification.

2020-07-15  Arnaud Charlet  <charlet@adacore.com>

        * libgnat/s-stposu.adb (Allocate_Any_Controlled): Fix logic in
        lock/unlock.

2020-07-15  Piotr Trojanek  <trojanek@adacore.com>

        * sem_util.adb (Is_Object_Reference): Return True on
        N_Target_Name.

2020-07-15  Arnaud Charlet  <charlet@adacore.com>

        * sem_ch13.adb (Check_Aspect_At_End_Of_Declarations): Add proper
        handling of Aspect_Predicate_Failure, consistent with
        Check_Aspect_At_Freeze_Point.

2020-07-15  Arnaud Charlet  <charlet@adacore.com>

        * sem_ch13.adb (Check_Aspect_Too_Late): Mention -gnat2020 switch
        in error message.

2020-07-15  Eric Botcazou  <ebotcazou@adacore.com>

        * einfo.ads (Delayed Freezing and Elaboration): Adjust description.
        * freeze.adb (Freeze_Object_Declaration): Likewise.
        * sem_ch3.adb (Delayed_Aspect_Present): Likewise.  Do not return
        true for Alignment.
        * sem_ch13.adb (Analyze_Aspect_Specifications): Do not always delay
        for Alignment.  Moreover, for Alignment and various Size aspects,
        do not delay if the expression is an attribute whose prefix is the
        Standard package.

2020-07-15  Eric Botcazou  <ebotcazou@adacore.com>

        * exp_ch6.adb (Requires_Atomic_Or_Volatile_Copy): Return false
        inside an initialization procedure.

2020-07-15  Ghjuvan Lacambre  <lacambre@adacore.com>

        * sem_util.adb (Is_Renaming): Add ekind checks.

2020-07-15  Arnaud Charlet  <charlet@adacore.com>

        * doc/gnat_ugn/gnat_utility_programs.rst: Remove doc on obsolete
        tools.
        * gnat_ugn.texi: Regenerate.

2020-07-15  Arnaud Charlet  <charlet@adacore.com>

        * sem_res.adb (Resolve_Type_Conversion): Protect against null
        entity.  Add proper tag for -gnatwr warning.

2020-07-15  Arnaud Charlet  <charlet@adacore.com>

        * sem_ch6.adb (Analyze_Procedure_Call): Detect use of operators
        in a procedure call.
        * sem_util.adb: Minor edit.

2020-07-15  Piotr Trojanek  <trojanek@adacore.com>

        * exp_spark.adb (Expand_SPARK_Delta_Or_Update): Apply scalar
        range checks against the base type of an index type, not against
        the index type itself.

2020-07-15  Eric Botcazou  <ebotcazou@adacore.com>

        * einfo.ads (Delayed Freezing and Elaboration): Minor tweaks.
        Document the discrepancy between the aspect and the non-aspect
        cases for alignment settings in object declarations.

2020-07-15  Arnaud Charlet  <charlet@adacore.com>

        * exp_ch3.adb (Freeze_Type): Remove warning in expander,
        replaced by a corresponding error in sem_ch13.adb. Replace
        RTE_Available by RTU_Loaded to avoid adding unnecessary
        dependencies.
        * sem_ch13.adb (Associate_Storage_Pool): New procedure.
        (Analyze_Attribute_Definition_Clause
        [Attribute_Simple_Storage_Pool| Attribute_Storage_Pool]): Call
        Associate_Storage_Pool to add proper legality checks on
        subpools.

2020-07-15  Yannick Moy  <moy@adacore.com>

        * libgnat/a-cbdlli.adb, libgnat/a-cbdlli.ads,
        libgnat/a-cbhama.adb, libgnat/a-cbhama.ads,
        libgnat/a-cbhase.adb, libgnat/a-cbhase.ads,
        libgnat/a-cbmutr.adb, libgnat/a-cbmutr.ads,
        libgnat/a-cborma.adb, libgnat/a-cborma.ads,
        libgnat/a-cborse.adb, libgnat/a-cborse.ads,
        libgnat/a-cbprqu.adb, libgnat/a-cbprqu.ads,
        libgnat/a-cbsyqu.adb, libgnat/a-cbsyqu.ads,
        libgnat/a-cdlili.adb, libgnat/a-cdlili.ads,
        libgnat/a-cidlli.adb, libgnat/a-cidlli.ads,
        libgnat/a-cihama.adb, libgnat/a-cihama.ads,
        libgnat/a-cihase.adb, libgnat/a-cihase.ads,
        libgnat/a-cimutr.adb, libgnat/a-cimutr.ads,
        libgnat/a-ciorma.adb, libgnat/a-ciorma.ads,
        libgnat/a-ciormu.adb, libgnat/a-ciormu.ads,
        libgnat/a-ciorse.adb, libgnat/a-ciorse.ads,
        libgnat/a-cohama.adb, libgnat/a-cohama.ads,
        libgnat/a-cohase.adb, libgnat/a-cohase.ads,
        libgnat/a-coinve.adb, libgnat/a-coinve.ads,
        libgnat/a-comutr.adb, libgnat/a-comutr.ads,
        libgnat/a-convec.adb, libgnat/a-convec.ads,
        libgnat/a-coorma.adb, libgnat/a-coorma.ads,
        libgnat/a-coormu.adb, libgnat/a-coormu.ads,
        libgnat/a-coorse.adb, libgnat/a-coorse.ads: Add SPARK_Mode =>
        Off.

2020-07-15  Eric Botcazou  <ebotcazou@adacore.com>

        * sem_ch3.adb (Delayed_Aspect_Present): Fix oversight in loop.
        * freeze.adb (Freeze_Object_Declaration): Use Declaration_Node
        instead of Parent for the sake of consistency.

2020-07-15  Javier Miranda  <miranda@adacore.com>

        * sem_attr.adb (Resolve_Attribute): Resolve overloaded
        N_Selected_Component prefix of 'Access. Required to handle
        overloaded prefixed view of protected subprograms.

2020-07-15  Arnaud Charlet  <charlet@adacore.com>

        * doc/gnat_ugn/about_this_guide.rst: Remove old section and
        update for Ada 202x.
        * doc/gnat_ugn/getting_started_with_gnat.rst: Add a system
        requirements section. Remove obsolete section and minimal
        rewording on the getting started section.
        * gnat_ugn.texi: Regenerate.

2020-07-15  Piotr Trojanek  <trojanek@adacore.com>

        * exp_ch5.adb (Expand_Assign_Array): Use short-circuit operator
        (style).
        * sem_res.adb (Resolve_Indexed_Component): Fix style in comment.
        * sem_util.adb (Is_Effectively_Volatile_Object): Handle slices
        just like indexed components; handle qualified expressions and
        type conversions lie in Is_OK_Volatile_Context.
        (Is_OK_Volatile_Context): Handle qualified expressions just like
        type conversions.

2020-07-15  Piotr Trojanek  <trojanek@adacore.com>

        * sem_prag.adb (Atomic_Components): Simplify with Ekind_In.
        (Complex_Representation): Fix type of E_Id, which just like when
        for pragma Atomic_Components will hold an N_Identifier node, not
        an entity.
        * sem_util.adb (Is_Effectively_Volatile): Refactor to avoid
        unnecessary computation.

2020-07-15  Arnaud Charlet  <charlet@adacore.com>

        * inline.adb, inline.ads
        (Inline_Static_Expression_Function_Call): Renamed
        Inline_Static_Function_Call.
        * sem_ch13.adb (Analyze_Aspect_Static): Allow static intrinsic
        imported functions under -gnatX.
        * sem_util.ads, sem_util.adb (Is_Static_Expression_Function):
        Renamed Is_Static_Function.
        (Is_Static_Expression_Function_Call): Renamed
        Is_Static_Function_Call.
        * sem_ch6.adb, sem_elab.adb, sem_res.adb: Update calls to
        Is_Static_Function*.
        * sem_eval.adb (Fold_Dummy, Eval_Intrinsic_Call, Fold_Shift):
        New.
        (Eval_Call): Add support for intrinsic calls, code refactoring.
        (Eval_Entity_Name): Code refactoring.
        (Eval_Logical_Op): Update comment.
        (Eval_Shift): Call Fold_Shift. Update comments.
        * par-prag.adb (Par [Pragma_Extensions_Allowed]): Set
        Ada_Version to Ada_Version_Type'Last to handle
        Extensions_Allowed (On) consistently.
        * opt.ads (Extensions_Allowed): Update documentation.
        * sem_attr.adb: Update comment.
        * doc/gnat_rm/implementation_defined_pragmas.rst: Update
        documentation of Extensions_Allowed.
        * gnat_rm.texi: Regenerate.

2020-07-15  Arnaud Charlet  <charlet@adacore.com>

        * sem_aggr.adb (Resolve_Iterated_Component_Association): Ensure
        Typ is never accessed uninitialized.

2020-07-15  Piotr Trojanek  <trojanek@adacore.com>

        * doc/gnat_rm/representation_clauses_and_pragmas.rst: Fix typo.
        * gnat_rm.texi: Regenerate.
        * libgnat/s-secsta.ads (Memory_Alignment): Likewise.

2020-07-15  Gary Dismukes  <dismukes@adacore.com>

        * exp_ch6.adb: Add a comma and fix a typo (machinary =>
        machinery) in comment.
        * exp_aggr.adb: Reformat, fix capitalization, and add a couple
        of commas in a comment. Adjust columns in several code
        fragments.
        * sem_aggr.adb: Reformat and add a comma in a comment.

2020-07-15  Eric Botcazou  <ebotcazou@adacore.com>

        * exp_ch9.adb (Expand_N_Timed_Entry_Call): Use the Sloc of
        the delay statement in the expansion.

2020-07-15  Ed Schonberg  <schonberg@adacore.com>

        * sem_aggr.adb (Resolve_Iterated_Component_Association): New
        procedure, internal to Resolve_Container_Aggregate, to complete
        semantic analysis of Iterated_Component_Associations.
        * exp_aggr.adb (Expand_Iterated_Component): New procedure,
        internal to Expand_Container_Aggregate, to expand the construct
        into an implicit loop that performs individual insertions into
        the target aggregate.

2020-07-15  Justin Squirek  <squirek@adacore.com>

        * exp_ch6.adb (Make_Build_In_Place_Call_Allocator): Normalize
        the associated node for internally generated objects to be like
        their SOAAT counter-parts.

2020-07-15  Arnaud Charlet  <charlet@adacore.com>

        * libgnat/g-socket.adb (Wait_On_Socket): Fix potentially
        uninitialized variable.

2020-07-10  Piotr Trojanek  <trojanek@adacore.com>

        * sem_ch8.adb (Find_Direct_Name): Fix code to match the comment.

2020-07-10  Eric Botcazou  <ebotcazou@adacore.com>

        * sem_ch13.adb (Analyze_Attribute_Definition_Clause) <Address>:
        Issue an unconditional warning for an overlay that changes the
        scalar storage order.

2020-07-10  Piotr Trojanek  <trojanek@adacore.com>

        * sem_ch8.adb (Is_Actual_Parameter): Fix processing when parent
        is a procedure call statement; extend comment.

2020-07-10  Bob Duff  <duff@adacore.com>

        * sem_res.adb (Resolve_Expression_With_Actions): Check the rules
        of AI12-0368, and mark the declare expression as static or known
        at compile time as appropriate.
        * sem_ch4.adb: Minor reformatting.
        * libgnat/a-stoufo.ads, libgnat/a-stoufo.adb: Allow up to 9
        replacement parameters. I'm planning to use this in the test
        case for this ticket.

2020-07-10  Ed Schonberg  <schonberg@adacore.com>

        * exp_ch3.adb (Build_Access_Subprogram_Wrapper_Body): Create a
        proper signature when the access type denotes a parameterless
        subprogram.
        * exp_ch6.adb (Expand_Call): Handle properly a  parameterless
        indirect call when the corresponding access type has contracts.

2020-07-10  Eric Botcazou  <ebotcazou@adacore.com>

        * exp_aggr.adb
        (Convert_To_Positional): Add Dims local variable
        and pass it in calls to Is_Flat and Flatten.
        (Check_Static_Components): Pass Dims in call to
        Is_Static_Element.
        (Nonflattenable_Next_Aggr): New predicate.
        (Flatten): Add Dims parameter and Expr local variable.  Call
        Nonflattenable_Next_Aggr in a couple of places.  In the case
        when an Others choice is present, check that the element is
        either static or a nested aggregate that can be flattened,
        before disregarding the replication limit for elaboration
        purposes.  Check that a nested array is flattenable in the case
        of a multidimensional array in any position.  Remove redundant
        check in the Others case and pass Dims in call to
        Is_Static_Element.  Use Expr variable.
        (Is_Flat): Change type of Dims parameter from Int to Nat.
        (Is_Static_Element): Add Dims parameter.  Replace tests on
        literals with call to Compile_Time_Known_Value.  If everything
        else failed and the dimension is 1, preanalyze the expression
        before calling again Compile_Time_Known_Value on it.  Return
        true for null.
        (Late_Expansion): Do not expand further if the assignment to the
        target can be done directly by the back end.

2020-07-10  Arnaud Charlet  <charlet@adacore.com>

        * osint-c.adb (Set_File_Name): Preserve casing of file.
        * osint.adb (File_Names_Equal): New.
        (Executable_Name): Use File_Equal instead of
        Canonical_Case_File_Name.

2020-07-10  Pascal Obry  <obry@adacore.com>

        * libgnat/g-socket.adb (Wait_On_Socket): Fix memory leaks and
        file descriptor leaks.  A memory leak was created each time the
        routine was called without a selector (Selector = Null). Also,
        in case of exception in the routine a memory leak and descriptor
        leak was created as the created file selector was not closed.

2020-07-10  Pascal Obry  <obry@adacore.com>

        * libgnat/g-socket.adb: Minor style fixes.

2020-07-10  Javier Miranda  <miranda@adacore.com>

        * sem_util.adb
        (Immediate_Context_Implies_Is_Potentially_Unevaluated): New
        subprogram.
        (Is_Potentially_Unevaluated): Do not stop climbing the tree on
        the first candidate subexpression; required to handle nested
        expressions.

2020-07-10  Gary Dismukes  <dismukes@adacore.com>

        * exp_aggr.adb, exp_spark.adb, sem_ch13.ads, sem_ch13.adb,
        snames.ads-tmpl: Minor reformatting and typo fixes.

2020-07-10  Yannick Moy  <moy@adacore.com>

        * sem_util.adb (Has_Enabled_Property): Add handling of
        non-variable objects.

2020-07-10  Piotr Trojanek  <trojanek@adacore.com>

        * sem_ch3.adb (Check_Completion): Refactor chained
        if-then-elsif-...  statement to be more like a case
        statement (note: we can't simply use case statement because of
        Is_Intrinsic_Subprogram in the first condition).

2020-07-10  Piotr Trojanek  <trojanek@adacore.com>

        * einfo.ads (E_Protected_Object): Enumeration literal removed.
        * lib-xref.ads (Xref_Entity_Letters): Remove reference to
        removed literal.
        * sem_ch3.adb (Check_Completion): Likewise.
        * sem_util.adb (Has_Enabled_Property): Likewise.

2020-07-10  Arnaud Charlet  <charlet@adacore.com>

        * exp_aggr.adb (Max_Aggregate_Size): Use small limit for
        aggregate inside subprograms.
        * sprint.adb (Sprint_Node_Actual [N_Object_Declaration]): Do not
        print the initialization expression if the No_Initialization
        flag is set.
        * sem_util.ads, sem_util.adb (Predicate_Enabled): New.
        * exp_ch4.adb (Expand_N_Type_Conversion): Code cleanup and apply
        predicate check consistently.
        * exp_ch6.adb (Expand_Actuals.By_Ref_Predicate_Check): Ditto.
        * sem_ch3.adb (Analyze_Object_Declaration): Ditto.
        * exp_ch3.adb (Build_Assignment): Revert handling of predicate
        check for allocators with qualified expressions, now handled in
        Freeze_Expression directly.
        * sem_aggr.adb: Fix typos.
        * checks.adb: Code refactoring: use Predicate_Enabled.
        (Apply_Predicate_Check): Code cleanup.
        * freeze.adb (Freeze_Expression): Freeze the subtype mark before
        a qualified expression on an allocator.
        * exp_util.ads, exp_util.adb (Within_Internal_Subprogram):
        Renamed Predicate_Check_In_Scope to clarify usage, refine
        handling of predicates within init procs which should be enabled
        when the node comes from source.
        * sem_ch13.adb (Freeze_Entity_Checks): Update call to
        Predicate_Check_In_Scope.

2020-07-10  Eric Botcazou  <ebotcazou@adacore.com>

        * exp_ch4.adb (Expand_Array_Comparison): Reformat.
        (Expand_Concatenate): Use standard size values directly and use
        Standard_Long_Long_Unsigned instead of RE_Long_Long_Unsigned.
        (Expand_Modular_Op): Use Standard_Long_Long_Integer in case the
        modulus is larger than Integer.
        (Expand_N_Op_Expon): Use standard size value directly.
        (Narrow_Large_Operation): Use Uint instead of Nat for sizes and
        use a local variable for the size of the type.
        (Get_Size_For_Range): Return Uint instead of Nat.
        (Is_OK_For_Range): Take Uint instead of Nat.

2020-07-10  Javier Miranda  <miranda@adacore.com>

        * exp_ch6.adb (Make_Build_In_Place_Iface_Call_In_Allocator):
        Build the internal anonymous access type using as a reference
        the designated type imposed by the context (instead of using the
        return type of the called function).

2020-07-10  Yannick Moy  <moy@adacore.com>

        * sem_res.adb (Resolve_Actuals): Protect call to
        Is_Valued_Procedure.

2020-07-10  Piotr Trojanek  <trojanek@adacore.com>

        * sem_ch3.adb (Process_Discriminants): Revert recent change to
        location of Set_Ekind; detect effectively volatile discriminants
        by their type only.

2020-07-10  Joffrey Huguet  <huguet@adacore.com>

        * libgnat/a-nbnbin.ads, libgnat/a-nbnbre.ads: Add global
        contract (Global => null) to all functions.

2020-07-10  Ed Schonberg  <schonberg@adacore.com>

        * aspects.ads: Add Aspect_Aggregate.
        * exp_aggr.adb (Expand_Container_Aggregate): Expand positional
        container aggregates into separate initialization and insertion
        operations.
        * sem_aggr.ads (Resolve_Container_Aggregate): New subprogram.
        * sem_aggr.adb (Resolve_Container_Aggregate): Parse aspect
        aggregate, establish element types and key types if present, and
        resolve aggregate components.
        * sem_ch13.ads (Parse_Aspect_Aggregate): Public subprogram used
        in validation, resolution and expansion of container aggregates
        * sem_ch13.adb
        (Parse_Aspect_Aggregate): Retrieve names of primitives specified
        in aspect specification.
        (Validate_Aspect_Aggregate): Check legality of specified
        operations given in aspect specification, before nane
        resolution.
        (Resolve_Aspect_Aggregate): At freeze point resolve operations
        and verify that given operations have the required profile.
        * sem_res.adb (Resolve): Call Resolve_Aspect_Aggregate if aspect
        is present for type.
        * snames.ads-tmpl: Add names used in aspect Aggregate: Empty,
        Add_Named, Add_Unnamed, New_Indexed, Assign_Indexed.

2020-07-10  Arnaud Charlet  <charlet@adacore.com>

        * Makefile.rtl (GNATRTL_NONTASKING_OBJS): Add s-shabig.o.
        * libgnat/s-shabig.ads: New file to share definitions.
        * libgnat/s-genbig.ads, libgnat/s-genbig.adb: Reorganized to
        make it more generic and flexible in terms of memory allocation
        and data structure returned.
        (To_String): Moved to System.Generic_Bignums to allow sharing
        this code.
        (Big_And, Big_Or, Big_Shift_Left, Big_Shift_Right): New.
        * libgnat/s-bignum.adb, libgnat/s-bignum.ads: Adapt to new
        System.Generic_Bignums spec.
        * libgnat/a-nbnbin.adb: Likewise.
        (To_String): Moved to System.Generic_Bignums to allow sharing
        this code.
        * libgnat/a-nbnbre.adb (Normalize): Fix handling of Num = 0
        leading to an exception.

2020-07-10  Eric Botcazou  <ebotcazou@adacore.com>

        * freeze.adb (Freeze_Expr_Types): Replace call to Find_Aspect
        with call to Find_Value_Of_Aspect and adjust accordingly.

2020-07-10  Eric Botcazou  <ebotcazou@adacore.com>

        * einfo.adb (Write_Field24_Name): Handle E_Loop_Parameter.
        * freeze.adb (Freeze_Expr_Types): Freeze the iterator type used as
        Default_Iterator of the name of an N_Iterator_Specification node.

2020-07-10  Eric Botcazou  <ebotcazou@adacore.com>

        * checks.adb (Determine_Range): Deal with Min and Max attributes.
        * exp_ch6.adb (Expand_Call_Helper): When generating code to pass
        the accessibility level to the caller in the case of an actual
        which is an if-expression, also remove the nodes created after
        the declaration of the dummy temporary.
        * sem_ch6.adb (Analyze_Subprogram_Body_Helper): Use Natural as
        the type of the minimum accessibility level object.

2020-07-10  Piotr Trojanek  <trojanek@adacore.com>

        * sem_ch3.adb (Process_Discriminants): Set Ekind of the
        processed discriminant entity before passing to
        Is_Effectively_Volatile, which was crashing on a failed
        assertion.
        * sem_prag.adb (Analyze_External_Property_In_Decl_Part): Prevent
        call to No_Caching_Enabled with entities other than variables,
        which was crashing on a failed assertion.
        (Analyze_Pragma): Style cleanups.
        * sem_util.adb (Is_Effectively_Volatile): Enforce comment with
        an assertion; prevent call to No_Caching_Enabled with entities
        other than variables.
        (Is_Effectively_Volatile_Object): Only call
        Is_Effectively_Volatile on objects, not on types.
        (No_Caching_Enabled): Enforce comment with an assertion.

2020-07-10  Yannick Moy  <moy@adacore.com>

        * debug.adb: Update comments to free usage of -gnatdF.

2020-07-10  Piotr Trojanek  <trojanek@adacore.com>

        * exp_spark.adb (Expand_SPARK_Delta_Or_Update): Refactored from
        Expand_SPARK_N_Attribute_Reference; rewrite into N_Aggregate or
        N_Delta_Aggregate depending on what is being rewritten.
        (Expand_SPARK_N_Delta_Aggregate): New routine to expand
        delta_aggregate.
        (Expand_SPARK_N_Attribute_Reference): Call the refactored
        routine.

2020-07-10  Piotr Trojanek  <trojanek@adacore.com>

        * exp_spark.adb (Expand_SPARK_N_Attribute_Reference): Fix
        expansion of attribute Update.

2020-07-10  Arnaud Charlet  <charlet@adacore.com>

        * sem.adb (Walk_Library_Items): Fix handling of Ghost units.

2020-07-08  Eric Botcazou  <ebotcazou@adacore.com>

        * tracebak.c [generic implementation]: Add pragma GCC diagnostic
        to disable warning about __builtin_frame_address.

2020-07-08  Dmitriy Anisimkov  <anisimko@adacore.com>

        * socket.c [_WIN32] (__gnat_minus_500ms): Parentheses around &&
        operations.  Remove notes about TN in comment.

2020-07-08  Eric Botcazou  <ebotcazou@adacore.com>

        * adaint.h (__gnat_expect_portable_execvp): Fix prototype.
        (__gnat_expect_poll): Likewise.
        * expect.c [_WIN32]: Include adaint.h file.
        (__gnat_waitpid): Remove useless variable.
        (__gnat_expect_portable_execvp): Add ATTRIBUTE_UNUSED on parameter.
        * raise-gcc.c [SEH] (__gnat_personality_v0): Add ATTRIBUTE_UNUSED.
        * socket.c [_WIN32] (__gnat_getservbyport): Add ATTRIBUTE_UNUSED on
        a couple of parameters.
        (__gnat_gethostbyname): Likewise.
        (__gnat_gethostbyaddr): Likewise.
        (__gnat_getservbyname): Likewise.
        (__gnat_last_socket_in_set): Use variables local to loops.
        (__gnat_socket_ioctl): Cast 3rd parameter to proper type if _WIN32.
        (__gnat_inet_pton): Cast 2nd parameter to proper type if _WIN32.
        * sysdep.c (__gnat_localtime_tzoff): Remove superfluous test.
        * terminals.c [_WIN32]: Include io.h file.
        (is_gui_app): Remove useless variables and fix unsigned comparison.
        (nt_spawnve): Add ATTRIBUTE_UNUSED on first parameter.  Initialize a
        local variable and remove others that are useless.  Add missing cast
        (__gnat_setup_child_communication): Remove useless variable and call
        Use proper formatting string in call to sprintf.
        (__gnat_setup_parent_communication): Cast to proper type.
        (find_child_console): Fix prototype and remove useless variable.
        (find_process_handle): Likewise.
        (_gnat_interrupt_process): Move to after __gnat_interrupt_pid.
        (__gnat_reset_tty): Add ATTRIBUTE_UNUSED on parameter, remove return
        (__gnat_setup_winsize): Add ATTRIBUTE_UNUSED on all parameters.

2020-07-08  Eric Botcazou  <ebotcazou@adacore.com>

        * exp_ch4.adb (Expand_N_Allocator): In the subtype mark case, do
        not apply constraint checks if the No_Initialization flag is set.

2020-07-08  Javier Miranda  <miranda@adacore.com>

        * exp_ch9.adb
        (Build_Class_Wide_Master): Insert the declaration of _Master
        before its use; required to avoid assertion failure in the
        backend.

2020-07-08  Arnaud Charlet  <charlet@adacore.com>

        * libgnat/i-cexten.ads (long_long, unsigned_long_long): Now
        subtypes of Interfaces.C types.
        * libgnat/a-calcon.ads, libgnat/a-calcon.adb
        (To_Unix_Nano_Time): Use Interfaces.C.long_long instead of
        Interfaces.C.Extensions.long_long.

2020-07-08  Vasiliy Fofanov  <fofanov@adacore.com>

        * debug.adb: Document new switch.
        * exp_ch6.adb (Warn_BIP): New function that warns if the switch
        is on.  Call it from Make_Build_In_Place_* functions.  Warn_BIP
        is not needed in Make_Build_In_Place_Iface_*, because those call
        Make_Build_In_Place_Call_In_Object_Declaration or similar.

2020-07-08  Piotr Trojanek  <trojanek@adacore.com>

        * erroutc.adb (Matches): Fix comments.

2020-07-08  Eric Botcazou  <ebotcazou@adacore.com>

        * freeze.adb (Has_Decl_In_List): New predicate to check that an
        entity is declared in a list of nodes.
        (Freeze_Expression): Use it to deal with Expression_With_Actions,
        short-circuit expression, if- and case-expression and ensure that
        the freeze node is put onto their Actions list if the entity is
        declared locally.

2020-07-08  Eric Botcazou  <ebotcazou@adacore.com>

        * freeze.adb (In_Expanded_Body): Return true for the body of a
        generated predicate function.

2020-07-08  Gary Dismukes  <dismukes@adacore.com>

        * sem_attr.adb: Remove hyphens in comments, plus minor code
        reformatting.
        * sem_ch13.adb: Fix typo (that => than).
        * sem_util.adb: Add hyphen in comment ("class-wide").

2020-07-08  Eric Botcazou  <ebotcazou@adacore.com>

        * freeze.adb (Freeze_Array_Type): Add comment on implementation
        choice for byte-packed array types.

2020-07-08  Piotr Trojanek  <trojanek@adacore.com>

        * sem_attr.adb (Analyze_Attribute): Correct prefix of 'Result
        this prefix is a generic function but the enclosing aspect or
        pragma is attached to its instance.
        * sem_ch12.adb (Analyze_Generic_Subprogram_Declaration): Analyze
        generic subprogram formal parameters (including the implicit
        result of a generic function) and only then analyse its aspects,
        because with Relaxed_Initialization the aspect expression might
        refer to those formal parameters.
        * sem_ch13.adb (Analyze_Aspect_Relaxed_Initialization): Accept
        aspect on generic subprograms; install formal parameters of a
        generic subprogram but not formal parameters of the generic unit
        itself (the previous code was inspired by aspects Post and
        Depends, where both kinds of formals are allowed).
        * sem_util.ads (Enter_Name): Fix name of a subprogram referenced
        in comment.

2020-07-08  Piotr Trojanek  <trojanek@adacore.com>

        * sem_ch12.adb (Analyze_Generic_Subprogram_Declaration): Call
        Analyze_Aspect_Specifications after setting Ekind of the
        analyzed entity.
        * sem_ch13.adb (Analyze_Aspect_Yield): Remove minimal decoration
        of generic subprograms.

2020-07-08  Arnaud Charlet  <charlet@adacore.com>

        * sem_prag.adb (Process_Inline): Check for duplicate
        pragma+aspect Inline. Minor code cleanup.
        (Check_Duplicate_Pragma): Add warning for duplicate
        pragma [No_]Inline under -gnatwr.
        * sinfo.ads, sinfo.adb (Next_Rep_Item): Allow N_Null_Statement
        which can appear when a pragma is rewritten.
        * sem_util.ads, sem_util.adb, bindo-writers.adb: Fix bad
        copy/paste now flagged.
        * libgnat/s-mmap.ads: Remove redundant pragma Inline.

2020-07-08  Ed Schonberg  <schonberg@adacore.com>

        * sem_util.adb (Build_Class_Wide_Clone_Body): Update entities to
        refer to the right spec.

2020-07-08  Bob Duff  <duff@adacore.com>

        * sem_ch13.adb (Predicate_Failure): Check that the type has
        predicates.  Remove the setting of Has_Delayed_Aspects and
        Freeze_Node, because (if the code is legal) it should have
        already been done by the predicate aspect.

2020-07-08  Gary Dismukes  <dismukes@adacore.com>

        * par-ch4.adb (P_Iterated_Component_Association): Typo
        corrections.

2020-07-08  Ed Schonberg  <schonberg@adacore.com>

        * par.adb (P_Iterator_Specification): Make public for use in
        other parser subprograms.
        * par-ch4.adb (P_Iterated_Component_Association): In Ada_2020,
        recognize use of Iterator_Specification in an element iterator.
        To simplify disambiguation between the two iterator forms, mark
        the component association as carrying an Iterator_Specification
        only when the element iterator (using "OF") is used.
        * par-ch5.adb (P_Loop_Parameter_Specification): In Ada_2020,
        parse iterator filter when present.
        (P_Iterator_Specification): Ditto.  Remove declaration of
        P_Iterator_Specification, now in parent unit.
        * exp_ch5.adb (Expand_N_Loop_Statement): Apply Iterator filter
        when present.
        (Expand_Iterator_Loop_Over_Array): Ditto.
        (Expand_Iterator_Loop_Over_Container): Ditto.
        * sem_aggr.adb (Resolve_Array_Aggregate): Emit error nessage if
        an iterated component association includes a iterator
        specificcation with an element iterator, i.e. one that uses the
        OF keyword.
        * sem_ch5.adb (Analyze_Iterator_Specification): Analyze Iterator
        filter when present.
        (Analyze_Loop_Parameter_Specification): Ditto.
        * sinfo.adb: Suprogram bodies for new syntactic element
        Iterator_Filter.
        * sinfo.ads: Add Iterator_Filter to relevant nodes.  Structure
        of Component_Association and Iteroted_Component_Association
        nodes is modified to take into account the possible  presence of
        an iterator specification in the latter.

2020-07-08  Yannick Moy  <moy@adacore.com>

        * sem_util.ads, sem_util.adb (Is_Attribute_Loop_Entry): New
        function for GNATProve.

2020-07-08  Ghjuvan Lacambre  <lacambre@adacore.com>

        * sem_ch13.adb (Analyze_Record_Representation_Clause,
        Check_Record_Representation_Clause): Add expected and actual
        size to error message.

2020-07-08  Piotr Trojanek  <trojanek@adacore.com>

        * sem_util.ads, sem_util.adb (Safe_To_Capture_Value): Return
        True for in-parameters.

2020-07-08  Justin Squirek  <squirek@adacore.com>

        * exp_attr.adb (Expand_Attribute): Set
        Stores_Attribute_Old_Prefix to generated renamings of 'Old
        constants for later use in generating finalization routines.
        * exp_ch7.adb (Build_Finalizer): Minor reformatting. Use "or
        else" operators.

2020-07-08  Gary Dismukes  <dismukes@adacore.com>

        * exp_ch6.adb (Expand_Simple_Function_Return): Remove ugly code
        that was copying the return expression, resetting Analyzed
        flags, etc. for the return expression of static expression
        functions.
        * inline.adb (Inline_Static_Expression_Function_Call): Set the
        Parent of the copied expression to that of the call. This avoids
        a blowup in Insert_Actions when GNATprove_Mode is set and there
        are nested SEF calls. Add ??? comment.
        * sem_ch6.adb (Analyze_Expression_Function): In the case of a
        static expression function, create a new copy of the expression
        and replace the function's expression with the copy; the
        original expression is used in the expression function's body
        and will be analyzed and rewritten, and we need to save a clean
        copy for later use in processing static calls to the function.
        This allows removing the kludgy code that was in
        Expand_Simple_Function_Return.
        * sem_eval.adb (Eval_Qualified_Expression): Return immediately
        if any errors have been posted on the qualified expression, to
        avoid blowups when GNATprove_Mode is enabled (or with -gnatd.F),
        since illegal static expressions are handled differently in that
        case and attempting to fold such expressions would fail.

2020-07-08  Eric Botcazou  <ebotcazou@adacore.com>

        * repinfo.adb (Compute_Max_Length): Skip hidden discriminants.
        (List_Record_Layout): Likewise.
        (List_Structural_Record_Layout): Use First_Discriminant instead
        of First_Stored_Discriminant and Next_Discriminant instead of
        Next_Stored_Discriminant to walk the list of discriminants.

2020-07-08  Piotr Trojanek  <trojanek@adacore.com>

        * sem_ch13.adb (Analyze_Aspect_Relaxed_Initialization): Analyze
        optional boolean expressions.
        * sem_util.ads, sem_util.adb (Has_Relaxed_Initialization): Adapt
        query; update comment.

2020-07-08  Piotr Trojanek  <trojanek@adacore.com>

        * einfo.ads (Current_Value): Fix typo in comment.
        * exp_ch2.adb (Expand_Current_Value): Remove unnecessary "Start
        of processing ..." comment.
        * exp_util.adb (Set_Entity_Current_Value): Fix unbalanced paren
        in comment.
        (Get_Current_Value_Condition): Fix layout in comment.
        * sem_ch5.adb (Analyze_Cond_Then): Replace commented condition
        with pragma Assert.

2020-07-08  Piotr Trojanek  <trojanek@adacore.com>

        * exp_ch5.adb (Expand_N_If_Statement): Detect True/False
        prefixed with Standard.

2020-07-08  Bob Duff  <duff@adacore.com>

        * sem_ch13.adb (Analyze_Aspect_Specifications): Add freeze node
        for the Underlying_Full_View if it exists. The freeze node is
        what triggers the generation of the predicate function.
        * freeze.adb: Minor reformatting.

2020-07-08  Eric Botcazou  <ebotcazou@adacore.com>

        * exp_ch4.adb (Narrow_Large_Operation): Use the base type instead
        of the first subtype of standard integer types as narrower type.

2020-07-07  Eric Botcazou  <ebotcazou@adacore.com>

        * freeze.adb (Freeze_Array_Type): Use Ctyp more consistently.
        Move code setting the alignment in the non-packed case to...
        * layout.adb (Layout_Type): ...here.

2020-07-07  Bob Duff  <duff@adacore.com>

        * treepr.adb (Print_Node): Add code to test Is_Extension.

2020-07-07  Arnaud Charlet  <charlet@adacore.com>

        * sem_ch4.adb (Try_Container_Indexing): Add ??? comment. Protect
        against malformed tree in case of errors.

2020-07-07  Piotr Trojanek  <trojanek@adacore.com>

        * einfo.adb, sem_ch10.adb, sem_ch12.adb, sem_ch8.adb: Use
        Is_Generic_Subprogram.

2020-07-07  Piotr Trojanek  <trojanek@adacore.com>

        * sem_ch8.adb (Analyze_Use_Package): Replace low-level,
        error-prone Ekind_In tests with high-level Is_Generic_Subprogram
        and Is_Subprogram.

2020-07-07  Arnaud Charlet  <charlet@adacore.com>

        * sem_ch6.adb (Check_Formal_Subprogram_Conformance): New
        subprogram to handle checking without systematically emitting an
        error.
        (Check_Conformance): Update call to
        Check_Formal_Subprogram_Conformance and fix handling of Conforms
        and Errmsg parameters.

2020-07-07  Arnaud Charlet  <charlet@adacore.com>

        * exp_ch4.adb (Tagged_Membership): Generate a call to
        CW_Membership instead of using Build_CW_Membership.
        (Expand_N_In): Remove wrong handling of null access types and
        corresponding comment.
        * exp_intr.adb (Expand_Dispatching_Constructor_Call): Generate a
        call to CW_Membership instead of using Build_CW_Membership.
        * rtsfind.ads: Add CW_Membership.
        * exp_atag.ads, exp_atag.adb (Build_CW_Membership): Removed.
        * einfo.ads: Fix typo.
        * libgnat/a-tags.ads, libgnat/a-tags.adb (CW_Membership): Moved
        back to spec.

2020-07-07  Ed Schonberg  <schonberg@adacore.com>

        * exp_ch3.adb (Build_Access_Subprogram_Wrapper_Body): Create
        proper subprogram specification for body, using names in the
        subprogram declaration but distinct entities.
        * exp_ch6.adb (Expand_Call): If this is an indirect call
        involving a subprogram wrapper, insert pointer parameter in list
        of actuals with a parameter association, not as a positional
        parameter.

2020-07-07  Justin Squirek  <squirek@adacore.com>

        * exp_ch6.adb (Expand_Branch): Verify the original node is a
        conditional expression before recursing further.
        (Insert_Level_Assign): Transform assertion into an explicit
        raise.

2020-07-07  Steve Baird  <baird@adacore.com>

        * sem_attr.adb (Eval_Attribute): Generalize static evaluation of
        Size attribute references to also handle
        Max_Size_In_Storage_Elements references.

2020-07-07  Javier Miranda  <miranda@adacore.com>

        * sem_util.adb (Is_Potentially_Unevaluated): Code cleanup.

2020-07-07  Eric Botcazou  <ebotcazou@adacore.com>

        * checks.ads (Expander Routines): Update the description of the
        Do_Range_Check mechanism.
        * checks.adb (Selected_Range_Checks): Fix typo.
        * exp_ch9.adb: Add with and use clause for Checks.
        (Actual_Index_Expression): Generate a range check if requested.
        (Entry_Index_Expression): Likewise.
        * sem_attr.adb (Resolve_Attribute) <Attribute_Count>: Call
        Apply_Scalar_Range_Check instead of Apply_Range_Check.
        * sem_ch9.adb (Analyze_Accept_Statement): Likewise.
        * sem_res.adb (Resolve_Entry): Likewise, after having set the
        actual index type on the prefix of the indexed component.
        (Resolve_Indexed_Component): Remove useless conditional construct.

2020-07-07  Piotr Trojanek  <trojanek@adacore.com>

        * contracts.adb (Analyze_Entry_Or_Subprogram_Contract,
        Process_Preconditions_For): Freeze expression that has been
        relocated to pragma Precondition, not the expression which is
        still in the aspect.

2020-07-07  Arnaud Charlet  <charlet@adacore.com>

        * sem_ch6.adb (Check_Conformance): Remove unnecessary (and
        wrong) code.
        * sem_ch8.adb (Check_Null_Exclusion): Post error at proper
        location.  Introduce new helper Null_Exclusion_Mismatch and fix
        implementation wrt formal subprograms used in generic bodies.
        (Analyze_Subprogram_Renaming): Fix missing setting of
        Error_Msg_Sloc.
        (Analyze_Object_Renaming): Replace "in Anonymous_Access_Kind" by
        Is_Anonymous_Access_Type.
        * sem_util.adb (Has_Null_Exclusion): Fix handling of
        N_Parameter_Specification.
        * sem_ch12.adb (Instantiate_Object): Replace "in
        Anonymous_Access_Kind" by Is_Anonymous_Access_Type.

2020-07-07  Ed Schonberg  <schonberg@adacore.com>

        * freeze.adb (Freeze_Expr_Types): Freeze the designated type of
        the explicit dereference.

2020-07-07  Javier Miranda  <miranda@adacore.com>

        * sem_util.adb (Is_Potentially_Unevaluated): Protect reading
        attribute Etype.

2020-07-07  Bob Duff  <duff@adacore.com>

        * libgnat/g-catiio.adb (Value, Parse_ISO_8601): Unsuppress
        checks, and don't rely on 'Valid.

2020-07-07  Arnaud Charlet  <charlet@adacore.com>

        * Makefile.rtl: Remove dead code.
        * doc/gnat_ugn/building_executable_programs_with_gnat.rst:
        Document gnatbind -xdr switch.
        * gnat_ugn.texi: Regenerate.

2020-07-07  Piotr Trojanek  <trojanek@adacore.com>

        * doc/gnat_ugn/building_executable_programs_with_gnat.rst
        (Validity Checking): Add "p" to the list of switches enabled by
        -gnatVa.
        * gnat_ugn.texi: Regenerate.

2020-07-07  Ghjuvan Lacambre  <lacambre@adacore.com>

        * sem_ch13.adb (Analyze_Attribute_Definition_Clause): Add call
        to Check_Restriction_No_Specification_Of_Aspect.
        * sem_prag.adb (Analyze_Pragma): Likewise.
        * restrict.ads (Check_Restriction_No_Specification_Of_Aspect):
        Mention possible new node kinds in documentation.
        * restrict.adb (Check_Restriction_No_Specification_Of_Aspect):
        Retrieve aspect id from different fields if given node is an
        N_Pragma or an N_Attribute_Definition_Clause.

2020-07-07  Gary Dismukes  <dismukes@adacore.com>

        * contracts.adb (Add_Invariant_And_Predicate_Checks): Relax the
        condition for doing invariant checks so that in-mode parameters
        of procedures are also checked (required by AI05-0289, and
        restricted to procedures by AI12-0044). This is done in a
        procedure's nested postconditions procedure.
        * exp_ch6.adb (Expand_Actuals): Also perform postcall invariant
        checks for in parameters of procedures (but not functions).
        Moved invariant-checking code to end of Expand_Actuals
        (including the nested function Is_Public_Subp).

2020-07-07  Piotr Trojanek  <trojanek@adacore.com>

        * sem_aggr.adb (Resolve_Delta_Array_Aggregate): Make Index_Type
        a constant.

2020-07-07  Piotr Trojanek  <trojanek@adacore.com>

        * exp_aggr.adb (Expand_N_Delta_Aggregate): Use type of the delta
        base expression for the anonymous object of the delta aggregate.

2020-07-07  Javier Miranda  <miranda@adacore.com>

        * sem_util.ads (Interval_Lists): Reordering routine.
        * sem_util.adb (Interval_Lists): Reordering routines to keep
        them alphabetically ordered.

2020-07-07  Piotr Trojanek  <trojanek@adacore.com>

        * sem_attr.adb (Resolve_Attribute): Do not call
        Check_Non_Static_Context.

2020-07-07  Arnaud Charlet  <charlet@adacore.com>

        * sem_elab.adb (Is_Guaranteed_ABE): Take into account null
        procedures.

2020-07-07  Piotr Trojanek  <trojanek@adacore.com>

        * sem_ch5.adb (Analyze_Assignment): Reuse Is_Assignable.

2020-07-07  Piotr Trojanek  <trojanek@adacore.com>

        * exp_spark.adb (Expand_SPARK_N_Attribute_Reference): Add scalar
        range checks for 'Update on arrays just like for 'Update on
        records.
        * sem_attr.adb (Analyze_Array_Component_Update): Do not set
        range checks for single-dimensional arrays.
        (Resolve_Attribute): Do not set range checks for both single-
        and multi- dimensional arrays.

2020-07-07  Piotr Trojanek  <trojanek@adacore.com>

        * sem.ads (Sem): Fix description.

2020-07-07  Piotr Trojanek  <trojanek@adacore.com>

        * sem_ch13.adb (Analyze_Relaxed_Parameter): Fix for protected
        entries.

2020-07-06  Piotr Trojanek  <trojanek@adacore.com>

        * checks.adb (Apply_Scalar_Range_Check): Use Is_RTE.

2020-07-06  Bob Duff  <duff@adacore.com>

        * libgnat/g-catiio.ads: Document newly supported format.  Add
        ISO_Time constant, for convenience.
        * libgnat/g-catiio.adb (Image_Helper): New helper function to do
        all the formatting work, called by the two exported Image
        functions.  Add support for "%:::z" here. Add a Time_Zone
        parameter used by the "%:::z" processing. This parameter is not
        used for the actual time zone computations; local time is always
        used for that, for ease of implementation reasons.  It would
        make sense to use Append throughout this function, but that's a
        cleanup for another day.
        (Image): Modify these to pass the local time zone, or the
        specified time zone, as appropriate.

2020-07-06  Bob Duff  <duff@adacore.com>

        * libgnat/g-catiio.ads: Change the regular expression that
        documents the allowed format to match what ISO-8601 allows.
        * libgnat/g-catiio.adb (Scan_Subsecond): Rewrite so it doesn't
        assume the subsecond comes last.
        (Parse_ISO_8601): Parse an optional subsecond, followed by an
        optional time zone, rather than making these alternatives to
        each other.

2020-07-06  Bob Duff  <duff@adacore.com>

        * libgnat/g-catiio.adb (Parse_ISO_8601): Minor cleanups:
        Give some objects clearer names.
        Make some objects more local to where they are used.
        Remove some validity checks that can't fail, because some of
        the variables tested have been moved so they're not visible here.
        Anyway, Wrong_Syntax is about errors in the input, not data
        validity.
        Use Time_Zone_Seen instead of Local_Sign = ' ' to determine
        that a time zone indication was seen.
        We don't need to distinguish two different kinds of
        syntax error (End_Of_Source_Reached and Wrong_Syntax),
        so use Wrong_Syntax always.
        Remove comment, "Certain scanning scenarios may handle
        this exception on their own."; there are no such scenarios.

2020-07-06  Bob Duff  <duff@adacore.com>

        * libgnat/g-catiio.ads, libgnat/g-catiio.adb (Image): New
        function. It might seem like the local-time Image should be
        implemented in terms of the Time_Zone Image, but that would be
        far harder to implement, so we do it the other way around.

2020-07-06  Thomas Quinot  <quinot@adacore.com>

        * libgnat/g-sechas.ads, libgnat/g-sechas.adb: Refactor to use
        Stream_Element_Array as the internal buffer type.
        * libgnat/g-shshco.adb: Adjust to use Stream_Element_Offset
        instead of Integer as the index in the internal state buffer.

2020-07-06  Gary Dismukes  <dismukes@adacore.com>

        * doc/gnat_rm/implementation_defined_pragmas.rst, errout.ads,
        erroutc.adb, exp_ch4.adb, exp_ch6.adb, freeze.adb: Comment
        rewording/reformatting/typo fixes.  Replace "ie." with "that is"
        in comment; "can not" -> "cannot", and remove an extraneous
        underscore in another comment.
        * gnat_rm.texi, gnat_ugn.texi: Regenerate.

2020-07-06  Javier Miranda  <miranda@adacore.com>

        * sem_util.ads (Interval_Lists.Aggregate_Intervals): New
        subprogram.
        * sem_util.adb (Has_Null_Others_Choice,
        Non_Static_Or_Null_Range, Interval_Lists.Aggregate_Intervals):
        New subprograms.
        (Is_Potentially_Unevaluated): Adding support to detect
        potentially unevaluated components of array aggregates.

2020-07-06  Bob Duff  <duff@adacore.com>

        * libgnat/g-catiio.adb (Parse_ISO_8601): New name for
        Parse_ISO_8861_UTC.  8601 is the correct ISO standard number.
        Also, "UTC" was confusing. All Time values are represented in
        UTC, but the ISO 8601 date strings include a time zone.
        If a time zone was specified, call
        Ada.Calendar.Formatting.Time_Of instead of
        GNAT.Calendar.Time_Of, because the latter adjusts to the current
        time zone, whereas we want to use (just) the time zone specified
        in the ISO string.  This allows us to pass Time_Zone instead to
        Time_Of, instead of adjusting by Local_Disp by hand.
        If no time zone was specified, call GNAT.Calendar.Time_Of as
        before.
        Use expanded names to clarify which Time_Of is being called.
        Remove redundant comment, and move nonredundant part of the
        commment to the spec.
        (Value): Minor: use "not in" instead of "or else".
        * libgnat/g-catiio.ads: Comment moved here. Correct the ISO
        standard number.
        * libgnat/g-calend.adb: Add ??? comments.
        * libgnat/a-calend.ads, libgnat/a-calend.adb: Update obsolete
        comments regarding the representation of type Time. Move the
        information about the epoch (year 2150) to the spec, and avoid
        uttering "2150" more than once.
        * libgnat/a-catizo.ads (Time_Offset): Add comment.

2020-07-06  Ed Schonberg  <schonberg@adacore.com>

        * exp_ch5.adb (Find_Component): If the target type is a derived
        record type and the required component is a discriminant that is
        renamed in the derived type declaration, use the name of the
        original discriminant to locate the intended target component.

2020-07-06  Justin Squirek  <squirek@adacore.com>

        * sem_ch12.adb (Analyze_Associations): Add check for errors on
        the generic formal before continuing with instantiation.

2020-07-06  Arnaud Charlet  <charlet@adacore.com>

        * libgnat/a-nbnbin.ads, libgnat/a-nbnbin.adb,
        libgnat/a-nbnbin__gmp.adb: Use more Valid_Big_Integer.

2020-07-06  Piotr Trojanek  <trojanek@adacore.com>

        * exp_util.ads (Get_Index_Subtype): Fix duplicate "Last".

2020-07-06  Ed Schonberg  <schonberg@adacore.com>

        * sinfo.ads: Indicate that Field 1 of an N_Delta_Aggregate is
        unused. Previously it was erroneously labelled as holding an
        Expressions list, in analogy with other aggregate constructs,
        but there are no Expressions attached to this node syntactically
        or semantically.

2020-07-06  Piotr Trojanek  <trojanek@adacore.com>

        * sem_attr.adb (Eval_Attribute): Check if constant has an
        initialization expression.

2020-07-06  Piotr Trojanek  <trojanek@adacore.com>

        * exp_spark.adb (Expand_SPARK_N_Attribute_Reference): Apply
        scalar range checks.
        * sem_attr.adb (Resolve_Attribute): Do not set scalar range
        checks when resolving attribute Update.

2020-07-06  Gary Dismukes  <dismukes@adacore.com>

        * sem_attr.adb (Analyze_Attribute, Attribute_Constrained): Issue
        a warning if the attribute prefix is a current instance
        reference within an aspect of a type or subtype.
        (Address_Checks): Replace test of Is_Object (Ent) with
        Is_Object_Reference (P) so that testing for current instances
        will be done.
        (Eval_Attribute): Add test for current instance reference, to
        ensure that we still fold array attributes when current
        instances are involved, since value prefixes are allowed for
        array attributes, and will now be excluded by
        Is_Object_Reference.
        * sem_util.ads (Is_Current_Instance_Reference_In_Type_Aspect):
        New exported query function.
        * sem_util.adb (Is_Object_Reference): Return False for the case
        where N is a current instance reference within an
        aspect_specification of a type or subtype (basically if the
        reference occurs within a predicate, invariant, or DIC aspect
        expression).
        (Is_Current_Instance_Reference_In_Type_Aspect): New function
        that tests whether a node is a reference to a current instance
        formal of a predicate, invariant, or
        Default_Initial_Condition (DIC) subprogram.

2020-07-06  Ed Schonberg  <schonberg@adacore.com>

        * sem_res.adb (Resolve_Declare_Expression): New subprogram, to
        install the scope holding local declarations of the expression,
        before completing its resolution.
        (Resolve): For an Expression_With_Actions that comes from a
        source occurrence of a Declare_Expression, call new subprogram.

2020-07-06  Piotr Trojanek  <trojanek@adacore.com>

        * sem_attr.adb (Analyze_Attribute): Reuse SPARK_Implicit_Load.

2020-07-06  Piotr Trojanek  <trojanek@adacore.com>

        * sem_ch5.adb (Analyze_Loop_Parameter_Specification): Propagate
        exception when switch -gnatdk is used and no previous errors are
        present.
        * sem_eval.adb (Compile_Time_Known_Value, Is_In_Range):
        Likewise.
        * sem_warn.adb (Operand_Has_Warnings_Suppressed): Likewise.

2020-07-06  Richard Kenner  <kenner@adacore.com>

        * exp_unst.adb (Needs_Fat_Pointer): Don't check for formal.
        (Unnest_Subprogram): Use 'Unchecked_Access instead of 'Access
        when populating activation record.

2020-07-06  Eric Botcazou  <ebotcazou@adacore.com>

        * exp_ch6.adb (Add_Simple_Call_By_Copy_Code): Rename parameter
        from Bit_Packed_Array to Force.
        (Expand_Actuals): Do not apply BIP processing if the subprogram
        is intrinsic.  Adjust calls to Add_Simple_Call_By_Copy_Code and
        add one for In parameters whose actual is a CPP constructor call.

2020-07-06  Eric Botcazou  <ebotcazou@adacore.com>

        * sem_attr.adb (Eval_Attribute): Do not apply range checks in
        the case of 'Pos applied to an integer type here.

2020-07-06  Ed Schonberg  <schonberg@adacore.com>

        * sem_ch3.adb (Analyze_Object_Declaration): If the type is an
        Unchecked_Union, and the expression is an aggregate. complete
        the analysis and resolution of the aggregate, and treat like a
        regular object declaration, instead of as a renaming
        declarattion.

2020-07-06  Eric Botcazou  <ebotcazou@adacore.com>

        * exp_ch9.adb (Is_Potentially_Large_Family): Add documentation.
        (Actual_Index_Expression): Use Entry_Index_Type.
        (Build_Entry_Count_Expression): Likewise.
        (Build_Find_Body_Index): Likewise.
        (Collect_Entry_Families): Likewise. Use directly the bounds of
        the index type to find out whether the family is large.
        (Entry_Index_Expression): Likewise.

2020-07-06  Piotr Trojanek  <trojanek@adacore.com>

        * sem_res.adb (Resolve_Range): Resolve both low and high bounds
        with the range type.

2020-07-06  Arnaud Charlet  <charlet@adacore.com>

        * aspects.ads (Is_Representation_Aspect):
        Default_Component_Value is a representation aspect.
        * sem_ch13.adb (Check_Aspect_Too_Late, Rep_Item_Too_Late): Relax
        RM 13.1(10) rule wrt primitive operations for Ada 202x.

2020-07-06  Eric Botcazou  <ebotcazou@adacore.com>

        * exp_aggr.adb (Aggr_Assignment_OK_For_Backend): Move to library
        level and use a new predicate Is_OK_Aggregate to recognize the
        aggregates suitable for direct assignment by the back-end.
        (Convert_Array_Aggr_In_Allocator): If neither in CodePeer mode nor
        generating C code, generate a direct assignment instead of further
        expanding if Aggr_Assignment_OK_For_Backend returns true.

2020-07-06  Gary Dismukes  <dismukes@adacore.com>

        * sem_aux.adb: Add a with clause for Nlists.
        (Nearest_Ancestor): Test for the case of concurrent
        types (testing for both Is_Concurrent_Type and
        Is_Concurrent_Record_Type), and return the first ancestor in the
        Interfaces list if present (otherwise will return Empty if no
        interfaces).
        * sem_ch13.adb (Build_Predicate_Functions): Add a ??? comment
        about missing handling for adding predicates when they can be
        inherited from multiple progenitors.

2020-07-06  Arnaud Charlet  <charlet@adacore.com>

        * par-ch6.adb (P_Return_Object_Declaration): Set
        Has_Init_Expression flag.

2020-07-02  Eric Botcazou  <ebotcazou@adacore.com>

        * debug.adb (d.K): Document new usage.
        * fe.h (Debug_Flag_Dot_KK): Declare.
        * gcc-interface/decl.c (gnat_to_gnu_field): Give an error when the
        component overlaps with the parent subtype, except with -gnatd.K.

2020-06-26  Eric Botcazou  <ebotcazou@adacore.com>

        * exp_ch4.adb (Expand_Set_Membership): Expand the membership test
        using left associativity instead of right associativity.

2020-06-23  Eric Botcazou  <ebotcazou@adacore.com>

        * gcc-interface/utils2.c (build_binary_op): Remove space.

2020-06-23  Eric Botcazou  <ebotcazou@adacore.com>

        * gcc-interface/trans.c (gnat_to_gnu) <N_Allocator>: Minor tweaks.
        Call Has_Constrained_Partial_View on base type of designated type.

2020-06-23  Eric Botcazou  <ebotcazou@adacore.com>

        * gcc-interface/utils.c (gnat_write_global_declarations): Output
        integral global variables first and the imported functions later.

2020-06-23  Eric Botcazou  <ebotcazou@adacore.com>

        * gcc-interface/decl.c (elaborate_expression_1): When GNAT encodings
        are not used, do not create a variable for debug info purposes if
        the expression is itself a user-declared variable.

2020-06-23  Eric Botcazou  <ebotcazou@adacore.com>

        * gcc-interface/ada-tree.h (DECL_RENAMED_OBJECT): Delete.
        * gcc-interface/decl.c (gnat_to_gnu_entity) <E_Variable>: Always use
        the stabilized reference directly for renaming and create a variable
        pointing to it separately if requested.
        * gcc-interface/misc.c (gnat_print_decl): Adjust for deletion.
        * gcc-interface/trans.c (Identifier_to_gnu): Likewise.
        (gnat_to_gnu) <N_Object_Renaming_Declaration>:
        Do not deal with side-effects here.
        <N_Exception_Renaming_Declaration>: Likewise.

2020-06-23  Eric Botcazou  <ebotcazou@adacore.com>

        * gcc-interface/decl.c (elaborate_expression): Replace calls to
        Is_OK_Static_Expression with Compile_Time_Known_Value.

2020-06-23  Eric Botcazou  <ebotcazou@adacore.com>

        * gcc-interface/decl.c (gnat_to_gnu_entity) <E_Record_Subtype>: Set
        debug type to the base type and only if the subtype is artificial.

2020-06-23  Eric Botcazou  <ebotcazou@adacore.com>

        * gcc-interface/trans.c (gnat_to_gnu) <N_Assignment_Statement>: Do
        not test Is_Bit_Packed_Array in the memset path.

2020-06-19  Eric Botcazou  <ebotcazou@adacore.com>

        * gcc-interface/trans.c (lvalue_required_for_attribute_p): Do not deal
        with 'Pos or 'Val.
        (Attribute_to_gnu): Likewise.
        * gcc-interface/utils.c (create_field_decl): Small formatting fix.

2020-06-19  Eric Botcazou  <ebotcazou@adacore.com>

        * gcc-interface/trans.c (adjust_for_implicit_deref): Delete.
        (maybe_implicit_deref): Likewise.
        (Attribute_to_gnu): Replace calls to maybe_implicit_deref by calls
        to maybe_padded_object.
        (Call_to_gnu): Likewise.
        (gnat_to_gnu) <N_Indexed_Component>: Likewise.
        <N_Slice>: Likewise.
        <N_Selected_Component>: Likewise.
        <N_Free_Statement>: Remove call to adjust_for_implicit_deref and
        manually make sure that the designated type is complete.
        * gcc-interface/utils2.c (build_simple_component_ref): Add comment.

2020-06-19  Eric Botcazou  <ebotcazou@adacore.com>

        * gcc-interface/decl.c (gnat_to_gnu_param): Tidy up.
        (gnat_to_gnu_subprog_type): For a variadic C function, do not
        build unnamed parameters and do not add final void node.
        * gcc-interface/misc.c: Include snames.h.
        * gcc-interface/trans.c (Attribute_to_gnu): Tidy up.
        (Call_to_gnu): Implement support for unnamed parameters in a
        variadic C function.
        * gcc-interface/utils.c: Include snames.h.
        (copy_type): Tidy up.

2020-06-19  Eric Botcazou  <ebotcazou@adacore.com>

        * exp_ch5.adb (Expand_N_Assignment_Statement): Do not apply
        range checks to allocators here.

2020-06-19  Justin Squirek  <squirek@adacore.com>

        * lib.adb (Check_Same_Extended_Unit): Add check to determine if
        the body for the subunits exist in the same file as their
        specifications.

2020-06-19  Eric Botcazou  <ebotcazou@adacore.com>

        * exp_aggr.adb (In_Place_Assign_OK): In an allocator context,
        check the bounds of an array aggregate against those of the
        designated type, except if the latter is unconstrained.

2020-06-19  Eric Botcazou  <ebotcazou@adacore.com>

        * sem_ch3.adb (Is_Visible_Component): Reason only on the private
        status of the original type in an instance body.

2020-06-19  Eric Botcazou  <ebotcazou@adacore.com>

        * sem_res.adb (Resolve_Qualified_Expression): Do not override the
        type of the node when it is unconstrained if it is for an allocator.

2020-06-19  Eric Botcazou  <ebotcazou@adacore.com>

        * sem_res.adb (Resolve_Allocator): Call Resolve_Qualified_Expression
        on the qualified expression, if any, instead of doing an incomplete
        type resolution manually.
        (Resolve_Qualified_Expression): Apply predicate check to operand.

2020-06-19  Eric Botcazou  <ebotcazou@adacore.com>

        * sem_ch4.adb (Analyze_Selected_Component): In an instance body,
        also invoke Find_Component_In_Instance on the parent subtype of
        a derived tagged type immediately visible.  Remove obsolete case.

2020-06-19  Eric Botcazou  <ebotcazou@adacore.com>

        * exp_attr.adb (Get_Integer_Type): Return the largest supported
        unsigned integer type if need be.

2020-06-19  Justin Squirek  <squirek@adacore.com>

        * sem_warn.adb (Warn_On_Known_Condition): Add general sanity
        check that asserts the original source node being checked
        contains an entity. If not, it could be the result of special
        case expansion for type conversions.

2020-06-19  Ed Schonberg  <schonberg@adacore.com>

        * sem_ch6.adb (Analyze_Expression_Function): Do not indicate
        that the function has a completion if it appears within a Ghost
        generic package.

2020-06-19  Bob Duff  <duff@adacore.com>

        * libgnat/a-ststbo.adb (Write): Replace pragma Assert with "if
        ... raise Constraint_Error".

2020-06-19  Justin Squirek  <squirek@adacore.com>

        * widechar.adb, widechar.ads (Skip_Wide): Catch validity check
        failure when skipping over characters, and update comment to
        reflect Skip_Wide's usage in error printing.

2020-06-19  Javier Miranda  <miranda@adacore.com>

        * exp_ch3.ads (Ensure_Activation_Chain_And_Master): New
        subprogram.
        * exp_ch3.adb (Ensure_Activation_Chain_And_Master): New
        subprogram that factorizes code.
        (Expand_N_Object_Declaration): Call new subprogram.
        * sem_ch6.adb (Analyze_Function_Return): Returning a
        build-in-place unconstrained array type defer the full analysis
        of the returned object to avoid generating the corresponding
        constrained subtype; otherwise the bounds would be created in
        the stack and a dangling reference would be returned pointing to
        the bounds.

2020-06-19  Arnaud Charlet  <charlet@adacore.com>

        * libgnat/a-nbnbin.adb, libgnat/a-nbnbin.ads,
        libgnat/a-nbnbin__gmp.adb, libgnat/a-nbnbre.adb,
        libgnat/a-nbnbre.ads: Update spec according to AI12-0366.

2020-06-19  Piotr Trojanek  <trojanek@adacore.com>

        * checks.ads: Remove excessive whitespace in declarations of
        functions for check suppression.

2020-06-19  Eric Botcazou  <ebotcazou@adacore.com>

        * sem_ch7.adb (Hide_Public_Entities): Split handling of objects
        and subprograms, and do not reject the latter upfront in nested
        instance specs if there are no referencer subprograms at all.
        (Analyze_Package_Body_Helper): Also call Hide_Public_Entities on
        nested generic instances.

2020-06-19  Piotr Trojanek  <trojanek@adacore.com>

        * sem_attr.adb (Analyze_Attribute): Reject illegal positional
        component associations; fix syntax in comment about named
        component associations.

2020-06-19  Piotr Trojanek  <trojanek@adacore.com>

        * sem_aggr.adb (Resolve_Delta_Record_Aggregate): Modify a nested
        Get_Component_Type routine to return a component and not just
        its type; use this routine to decorate the identifier within the
        delta aggregate.

2020-06-19  Arnaud Charlet  <charlet@adacore.com>

        * sem_ch4.adb (Find_Equality_Types.Check_Access_Attribute): New.
        (Find_Equality_Types): Move universal_access related checks at
        the end of the processing and add call to
        Check_Access_Attribute.

2020-06-19  Eric Botcazou  <ebotcazou@adacore.com>

        * sem_prag.adb (Process_Convention): Revert previous change.

2020-06-19  Eric Botcazou  <ebotcazou@adacore.com>

        * checks.ads (Apply_Static_Length_Check): Move up.
        (Apply_Range_Check): Add parameter Insert_Node.
        * checks.adb (Apply_Selected_Range_Checks): Merge into...
        (Apply_Range_Check): ...this.  Add parameter Insert_Node,
        pass it as Warn_Node to Selected_Range_Checks and use it
        as insertion point for the checks.
        * sem_ch3.adb (Analyze_Subtype_Declaration): Rewrite block
        dealing with the range checks for the subtype indication.
        Use local variable and call Apply_Range_Check in both cases.

2020-06-19  Piotr Trojanek  <trojanek@adacore.com>

        * exp_attr.adb (Expand_N_Attribute_Reference): Call Ensure_Valid
        on the expression of an object declaration that captures the
        value of 'Old prefix.

2020-06-19  Piotr Trojanek  <trojanek@adacore.com>

        * exp_attr.adb (Expand_N_Attribute_Reference): Add comment.
        * sem_attr.adb (Analyze_Attribute): Add ??? comment.
        * sem_util.ads (Valid_Scalars): This routine is only used for
        'Valid_Scalars and not for 'Valid.

2020-06-19  Piotr Trojanek  <trojanek@adacore.com>

        * exp_attr.adb (Expand_N_Attribute_Reference): Do not call
        Scalar_Part_Present on the array component's type.
        (Build_Array_VS_Func): Remove Comp_Typ parameter, because it can
        be easily computed from the Array_Top parameter *and redundant
        parameters are confusing and error-prone).

2020-06-19  Piotr Trojanek  <trojanek@adacore.com>

        * exp_attr.adb (Build_Record_VS_Func): Strip privacy and type
        derivation from the root type when 'Valid_Scalars is applied to
        a class-wide type.

2020-06-19  Piotr Trojanek  <trojanek@adacore.com>

        * checks.adb (Apply_Parameter_Validity_Checks): Remove testing
        of Check_Validity_Of_Parameters for every formal parameter and
        function result.

2020-06-19  Arnaud Charlet  <charlet@adacore.com>

        * sem_warn.adb (Warn_On_Overlapping_Actuals): Add missing
        warning tag.

2020-06-18  Eric Botcazou  <ebotcazou@adacore.com>

        * exp_ch4.adb (Get_Size_For_Range): Only make sure to return a
        size lower than that of the original type if possible.
        * libgnat/s-rannum.adb (Random_Discrete): Back out optimization
        added for 32-bit types.

2020-06-18  Arnaud Charlet  <charlet@adacore.com>

        * sem_ch6.ads, sem_ch6.adb (Check_Formal_Conformance): New
        subprogram.
        (Check_Conformance): Move code to Check_Formal_Conformance.
        * sem_ch8.adb (Analyze_Subprogram_Renaming): Check for formal
        conformance when needed.

2020-06-18  Eric Botcazou  <ebotcazou@adacore.com>

        * exp_ch4.adb (Narrow_Large_Operation): New procedure to try
        and narrow large arithmetic and comparison operations.
        (Expand_N_In): Call it.
        (Expand_N_Op_Abs): Likewise.
        (Expand_N_Op_Add): Likewise.
        (Expand_N_Op_Divide): Likewise.
        (Expand_N_Op_Eq): Likewise.
        (Expand_N_Op_Ge): Likewise.
        (Expand_N_Op_Gt): Likewise.
        (Expand_N_Op_Le): Likewise.
        (Expand_N_Op_Lt): Likewise.
        (Expand_N_Op_Minus): Likewise.
        (Expand_N_Op_Mod): Likewise.
        (Expand_N_Op_Multiply): Likewise.
        (Expand_N_Op_Ne): Likewise.
        (Expand_N_Op_Plus): Likewise.
        (Expand_N_Op_Rem): Likewise.
        (Expand_N_Op_Subtract): Likewise.
        (Expand_N_Type_Conversion): Use Convert_To procedure.
        * exp_ch9.adb (Is_Pure_Barrier) <N_Identifier>: Skip all
        numeric types.
        <N_Type_Conversion>: Use explicit criterion.

2020-06-18  Eric Botcazou  <ebotcazou@adacore.com>

        * exp_ch4.adb (Expand_Allocator_Expression): Apply constraint
        and predicate checks for the qualified expression on entry,
        followed by constraint and predicate checks for the allocator
        itself, and return early if this results in a static error.
        (Expand_N_Allocator): Do not do the same here.  Instead apply
        constraint and predicate checks for arrays in the subtype
        indication case.
        * exp_ch5.adb (Expand_N_Assignment_Statement): Do not apply
        range checks to allocators here.

2020-06-18  Javier Miranda  <miranda@adacore.com>

        * exp_ch6.adb (BIP_Suffix_Kind, Is_Build_In_Place_Entity): Move
        declarations...
        * exp_ch6.ads: Here.
        * exp_util.adb (Is_Secondary_Stack_BIP_Func_Call): Do not rely
        on the name of the scope to locate the extra formal BIPalloc
        since they are copied when the pointer type associated with
        dispatching calls is built; rely on routines
        Is_Build_In_Place_Entity and BIP_Suffix_Kind.
        * exp_disp.adb (Expand_Dispatching_Call): Set the scope of the
        first extra formal of the internally built pointer type.
        * sem_ch3.adb (Derive_Subprogram): Do not inherit extra formals
        from a limited interface parent since limitedness is not
        inherited in such case (AI-419) and this affects the extra
        formals.
        * sprint.adb (Write_Itype): Output extra formals of subprogram
        types.

2020-06-18  Ghjuvan Lacambre  <lacambre@adacore.com>

        * errout.adb (Write_Error_Summary): Display number of warnings
        treated as errors.
        * errutil.ads: Update comment.

2020-06-18  Eric Botcazou  <ebotcazou@adacore.com>

        * exp_attr.adb (Analyze_Attribute) <Asm_{In,Out}put>: Alphabetize.
        <Component_Size>: Add check for universal integer attribute.
        <Aft>, <Bit_Order>, <Definite>, <Max_Alignment_For_Allocation>,
        <Scalar_Storage_Order>: Raise Program_Error on them.
        * sem_attr.adb (Eval_Attribute) <Component_Size>: Add comment on
        the packed array case.

2020-06-18  Steve Baird  <baird@adacore.com>

        * sem_util.adb (Object_Access_Level): Treat a 'Old attribute
        reference like an aggregate in determining its static
        accessibility level; after the evaluation of the relevant
        post-condition, the implicitly declared constant associated with
        an Old attribute reference ceases to exist. Similarly for
        Loop_Entry attribute.
        * exp_ch6.adb (Expand_Call_Helper): For an attribute reference
        that is expanded into a reference to an implicitly declared
        constant (e.g., a 'Old or 'Loop_Entry attribute), compute the
        dynamic accessibility level of that constant by looking at the
        declaration of the constant (as opposed to looking at the
        attribute reference).

2020-06-18  Steve Baird  <baird@adacore.com>

        * exp_ch3.adb (Expand_N_Object_Declaration): Do not generate a
        default initial condition check for the declaration of an
        imported object.

2020-06-18  Arnaud Charlet  <charlet@adacore.com>

        * Makefile.rtl: Add s-statxd.o.
        * bindgen.adb (Gen_Adainit): Add support for XDR_Stream.
        * bindusg.adb (Display): Add mention of -xdr.
        * gnatbind.adb: Process -xdr switch.
        * init.c (__gl_xdr_stream): New.
        * opt.ads (XDR_Stream): New.
        * libgnat/s-stratt__xdr.adb: Rename to...
        * libgnat/s-statxd.adb: this and adjust.
        * libgnat/s-statxd.ads: New.
        * libgnat/s-stratt.ads, libgnat/s-stratt.adb: Choose between
        default and XDR implementation at runtime.
        * libgnat/s-ststop.ads: Update comments.
        * doc/gnat_rm/implementation_advice.rst: Update doc on XDR
        streaming.
        * gnat_rm.texi: Regenerate.

2020-06-18  Eric Botcazou  <ebotcazou@adacore.com>

        * sem_attr.adb (Analyze_Attribute) <To_Address>: Use the address
        size of the target instead of the host when checking the value of
        a static expression.  Also use standard idiom for exponentiation.

2020-06-18  Eric Botcazou  <ebotcazou@adacore.com>

        * sem_prag.adb (Process_Convention): Give a warning on C_Variadic_n
        being applied to a subprogram with exactly n parameters.

2020-06-18  Arnaud Charlet  <charlet@adacore.com>

        * libgnarl/s-osinte__linux.ads, libgnat/g-io.adb,
        libgnat/g-socket.adb, libgnat/g-socthi.adb,
        libgnat/g-socthi.ads, libgnat/g-socthi__vxworks.adb,
        libgnat/g-socthi__vxworks.ads, libgnat/g-sothco.ads,
        libgnat/s-io.adb, libgnat/a-except.adb: Fix function profile
        mismatch with imported C functions.

2020-06-18  Eric Botcazou  <ebotcazou@adacore.com>

        * exp_ch6.adb (Expand_Call_Helper): Remove superfluous calls
        to Relocate_Node and merge calls to Analyze and Resolve in a
        couple of places.  Do not attempt to generate a range check
        for an actual parameter against the formal's type of a derived
        subprogram after generating a conversion to the formal's type
        of the parent subprogram.

2020-06-18  Eric Botcazou  <ebotcazou@adacore.com>

        * checks.adb (Compute_Range_For_Arithmetic_Op): New procedure to
        compute a range for an arithmetical operation extracted from...
        (Minimize_Eliminate_Overflows): ...here.  Call it.
        (Determine_Range_Cache_O): New cache for Original_Node nodes.
        (Determine_Range): Call Compute_Range_For_Arithmetic_Op for all
        arithmetic expressions. Use Attribute_Id in lieu of Attribute_Name
        for attributes. Add handling for Range_Length alongside Length.
        Add specific handling for Alignment, Bit, First_Bit, Last_Bit,
        Max_Size_In_Storage_Elements, Position, Bit_Position,
        Component_Size, Object_Size, Size, Value_Size, Descriptor_Size.
        (Enable_Overflow_Check): Omit the check for Abs and Minus if the
        operand cannot be the largest negative number.
        (Selected_Length_Checks): Use Pos for Number_Dimensions.
        * exp_attr.adb (Expand_N_Attribute_Reference): Move compile-time
        handling of Bit_Position, Descriptor_Size, First_Bit, Last_Bit
        and Position to...
        * sem_attr.adb (Eval_Attribute): ...here.  Move up Alignment for
        objects and use Compile_Time_Known_Attribute in this case too.

2020-06-18  Ghjuvan Lacambre  <lacambre@adacore.com>

        * erroutc.ads: Declare new Is_Compile_Time_Msg boolean,
        add new Compile_Time_Pragma field to Error_Msg_Object type.
        (Count_Compile_Time_Pragma_Warnings): New function.
        * erroutc.adb (Count_Compile_Time_Pragma_Warnings): New
        function.
        (Compilation_Errors): Take Compile_Time warnings into account
        when tallying Errors/Warnings.
        * errout.ads (Error_Msg): New procedure.
        * errout.adb (Error_Msg): New procedure.
        (Error_Msg_Internal): Set new Compile_Time_Pragma field in
        Error_Msg_Object.
        * errutil.adb (Error_Msg): Set new Compile_Time_Pragma field in
        Error_Msg_Object.
        * sem_prag.adb (Validate_Compile_Time_Warning_Or_Error): Pass
        True to new Error_Msg procedure.
        * doc/gnat_rm/implementation_defined_pragmas.rst: Update doc for
        the Compile_Time_Warning pragma.
        * gnat_rm.texi: Regenerate.
        * opt.ads: Update comment.

2020-06-18  Arnaud Charlet  <charlet@adacore.com>

        * sem_ch4.adb (Check_Compatible_Profiles): Add explicit
        initialization.

2020-06-18  Piotr Trojanek  <trojanek@adacore.com>

        * checks.adb (Generate_Index_Checks): Handle
        N_Subtype_Indication returned from Scalar_Range.

2020-06-18  Piotr Trojanek  <trojanek@adacore.com>

        * checks.adb, sem_ch3.adb: Minor refactorings.
        * sem_eval.adb (Eval_Qualified_Expression): Fix reference to RM
        rule in comment; only set a local variable Hex in the branch
        where it is used.

2020-06-18  Piotr Trojanek  <trojanek@adacore.com>

        * sem_eval.adb (Check_Non_Static_Context): Use Is_RTE.

2020-06-18  Arnaud Charlet  <charlet@adacore.com>

        * sem_ch4.adb (Find_Equality_Types.Check_Access_Object_Types):
        New function, used to implement RM 4.5.2 (9.6/2).
        (Find_Equality_Types.Check_Compatible_Profiles): New function,
        used to implement RM 4.5.2(9.7/2).
        (Find_Equality_Types.Reference_Anonymous_Access_Type): New
        function.
        (Find_Equality_Types.Try_One_Interp): Fix handling of anonymous
        access types which was accepting both too much and too little.
        Remove accumulated special and incomplete cases for
        instantiations, replaced by Has_Compatible_Type.
        (Analyze_Overloaded_Selected_Component): Use
        Is_Anonymous_Access_Type instead of Ekind_In.
        * sem_res.adb: Code cleanup and bug fix: use
        Is_Anonymous_Access_Type instead of Ekind_In.  Relax checking of
        anonymous access parameter when universal_access "=" is
        involved.
        * sem_type.adb: Likewise.
        (Find_Unique_Type): Move code from here...
        (Specific_Type): ...to here. Also add missing handling of access
        to class wide types.
        * einfo.ads, einfo.adb (Is_Access_Object_Type): New.

2020-06-18  Bob Duff  <duff@adacore.com>

        * libgnat/a-strsto.ads, libgnat/a-ststbo.adb,
        libgnat/a-ststbo.ads, libgnat/a-ststun.adb,
        libgnat/a-ststun.ads: New files, containing packages
        Ada.Streams.Storage, Ada.Streams.Storage.Bounded, and
        Ada.Streams.Storage.Unbounded.
        * impunit.adb, Makefile.rtl: Add new file names.

2020-06-18  Javier Miranda  <miranda@adacore.com>

        * sem_ch13.adb (Has_Good_Profile): Enforce strictness in the
        check. Required to detect wrong profiles for Input and Output.
        (Analyze_Stream_TSS_Definition): Minor enhancement in the text
        of the error for class-wide attributes.

2020-06-18  Eric Botcazou  <ebotcazou@adacore.com>

        * exp_attr.adb (Get_Integer_Type): Pick an unsigned type based
        on the Esize of the base type of the input type.

2020-06-18  Eric Botcazou  <ebotcazou@adacore.com>

        * exp_ch4.adb (Expand_Array_Equality): For the optimization of
        the 2-element case, build new expression lists for the indices.

2020-06-18  Richard Kenner  <kenner@adacore.com>

        * sem_util.adb (Enclosing_Subprogram): No longer need
        Convention_Protected.

2020-06-18  Claire Dross  <dross@adacore.com>

        * sem_util.adb (Is_OK_Volatile_Context): Return False on
        definitions of constants declared in declare expressions.

2020-06-18  Piotr Trojanek  <trojanek@adacore.com>

        * doc/gnat_rm/implementation_defined_aspects.rst
        (Relaxed_Initialization): New implementation-defined aspect.
        * doc/gnat_rm/implementation_defined_attributes.rst
        (Initialized): New implementation-defined attribute.
        * gnat_rm.texi: Regenerate.

2020-06-18  Javier Miranda  <miranda@adacore.com>

        * exp_disp.adb (Expand_Dispatching_Call): Add missing decoration
        of attribute Extra_Accessibility_Of_Result.
        * freeze.adb (Check_Extra_Formals): No check required if
        expansion is disabled; Adding check on
        Extra_Accessibilty_Of_Result.
        (Freeze_Subprogram): Fix decoration of
        Extra_Accessibility_Of_Result.
        * sem_ch3.adb (Derive_Subprogram): Fix decoration of
        Extra_Accessibility_Of_Result

2020-06-18  Eric Botcazou  <ebotcazou@adacore.com>

        * exp_ch4.adb (Optimize_Length_Comparison): Accept 32-bit values
        in the full unsigned range.

2020-06-17  Eric Botcazou  <ebotcazou@adacore.com>

        * checks.adb (Apply_Universal_Integer_Attribute_Checks): Do not do
        anything when the type of the node is already Universal_Integer.

2020-06-17  Arnaud Charlet  <charlet@adacore.com>

        * sem_ch10.adb (Expand_With_Clause): Add missing handling of
        N_Generic_Subprogram_Declaration, N_Subprogram_Declaration,
        N_Subprogram_Body.

2020-06-17  Ed Schonberg  <schonberg@adacore.com>

        * sem_ch13.adb: (Check_Inherited_Indexing): Check that a type
        derived from an indexable container type cannot specify an
        indexing aspect if the same aspect is not specified for the
        parent type (RM 4.1.6 (6/5), AI12-160). Add a check that a
        specified indexing aspect for a derived type is confirming.

2020-06-17  Gary Dismukes  <dismukes@adacore.com>

        * exp_ch9.adb (Build_Protected_Subp_Specification): Add ???
        comment about the flag Has_Nested_Subprogram not being set here.
        (Expand_N_Protected_Body): If the original body for a protected
        subprogram has the flag Has_Nested_Subprogram set, then set that
        flag on the new unprotected subprogram body that's created for
        it, and reset the Scope fields of its top level declarations,
        which have been effectively taken from the original protected
        subprogram body. Add ??? comment about unclear testing of
        Corresponding_Spec.

2020-06-17  Javier Miranda  <miranda@adacore.com>

        * aspects.ads (type Aspect_Id): Add Aspect_Yield as a Boolean
        aspect, and update the Is_Representation_Aspect, Aspect_Names,
        and Aspect_Delay arrays.
        * einfo.ads, einfo.adb (Has_Yield_Aspect, Yield_Aspect): New
        subprograms.
        * exp_ch6.adb (Add_Return, Expand_Non_Function_Return,
        Expand_Simple_Function_Return): Add calls to Yield.
        * exp_ch9.adb (Build_Accept_Body, Expand_N_Accept_Statement):
        Add calls to Yield.
        * rtsfind.ads (RE_Yield): Adding support to generate calls to
        the runtime service Ada.Dispatching.Yield
        * sem_ch13.adb (Analyze_Aspect_Yield): New subprogram.
        * sem_ch3.adb (Derive_Subprogram): Inherit attribute
        Has_Yield_Aspect.
        * sem_ch8.adb (Analyze_Subprogram_Renaming): Check consistency
        of Has_Yield in the actual subprogram of a generic
        instantiation.
        * sem_disp.adb (Check_Dispatching_Operation): Check that if the
        Yield aspect is specified for a dispatching subprogram that
        inherits the aspect, the specified value shall be confirming.
        * sem_prag.adb (Analyze_Pragma [Pragma_Implemented]): Check that
        the implementation kind By_Protected_Procedure cannot be applied
        to a procedure that has aspect Yield.

2020-06-17  Eric Botcazou  <ebotcazou@adacore.com>

        * exp_ch4.adb (Expand_N_Op_Expon): Replace all occurrences of
        the original right operand with the relocated version.

2020-06-17  Javier Miranda  <miranda@adacore.com>

        * exp_ch6.adb (Has_BIP_Extra_Formal): New subprogram.
        (Needs_BIP_Task_Actuals): Add support for the subprogram type
        internally generated for dispatching calls.
        * exp_disp.adb (Expand_Dispatching_Call): Adding code to
        explicitly duplicate the extra formals of the target subprogram.
        * freeze.adb (Check_Extra_Formals): New subprogram.
        (Freeze_Subprogram): Fix decoration of Extra_Formals.
        * sem_ch3.adb (Derive_Subprogram): Fix decoration of
        Extra_Formals.

2020-06-17  Bob Duff  <duff@adacore.com>

        * par.adb (P_Basic_Declarative_Items): Update comment about
        Declare_Expression.
        * par-ch3.adb (P_Declarative_Items): Pass in Declare_Expression
        flag, and if True, skip the call to Style.Check_Indentation.
        * par-ch4.adb (P_Declare_Expression): Fix incorrect comment.

2020-06-17  Arnaud Charlet  <charlet@adacore.com>

        * sem_res.adb (Valid_Conversion): Change error message to make
        it more user-friendly.

2020-06-17  Eric Botcazou  <ebotcazou@adacore.com>

        * checks.ads (Apply_Length_Check_On_Assignment): Declare.
        * checks.adb (Apply_Length_Check_On_Assignment): New procedure
        to apply a length check to an expression in an assignment.
        * exp_ch5.adb (Expand_Assign_Array): Call it instead of calling
        Apply_Length_Check to generate a length check.
        * sem_ch5.adb (Analyze_Assignment): Likewise.

2020-06-17  Piotr Trojanek  <trojanek@adacore.com>

        * einfo.adb (Is_Relaxed_Initialization_State): Add reference to
        SPARK RM.
        * sem_attr.adb (Analyze_Attribute_Old_Result): Likewise.
        * sem_ch13.adb (Analyze_Aspect_Relaxed_Initialization): Reject
        aspect on completions of private types and deferred constants.
        * sem_util.ads, sem_util.adb (Has_Relaxed_Initialization):
        Adjust comments; support queries for constants.

2020-06-17  Eric Botcazou  <ebotcazou@adacore.com>

        * cstand.adb (Stloc): Change to a renaming.
        (Staloc): Likewise.
        (Build_Unsigned_Integer_Type): Remove Nam parameter, use local
        constants and do not call Make_Name.
        (Make_Dummy_Index): Use local constants.
        (Create_Standard): Pass the name of entities as parameter in
        calls to New_Standard_Entity and remove calls to Make_Name.
        Adjust calls to Build_Unsigned_Integer_Type.
        (Identifier_For): Use local constant.
        (Make_Component): Pass the name of the component as parameter
        in call to New_Standard_Entity and remove call to Make_Name.
        (Make_Formal): Likewise.  Rename Formal_Name parameter into
        Nam and use local constant.
        (Make_Name): Delete.
        (New_Operator): Use local constant.
        (New_Standard_Entity): Rename S parameter into Nam and build
        the name here.  Remove call to Make_Name.
        (Register_Float_Type): Pass the name of the type as parameter
        in call to New_Standard_Entity and remove call to Make_Name.

2020-06-17  Eric Botcazou  <ebotcazou@adacore.com>

        * exp_attr.adb (Expand_N_Attribute_Reference) <Attribute_First>:
        Remove condition added for scalar types.

2020-06-17  Gary Dismukes  <dismukes@adacore.com>

        * exp_ch3.ads (Build_Access_Subprogram_Wrapper_Body): Adjust
        colon columns; reformat comment.
        * exp_ch3.adb
        (Build_Access_Subprogram_Wrapper_Body): Likewise.
        * sem_ch3.adb (Build_Access_Subprogram_Wrapper): Reformat spec
        comment and reformat comment in body.
        (Analyze_Full_Type_Declaration): Reformat comment.
        (Replace_Type_Name): Fixed three typos, plus reformatting of
        comment.
        * sem_prag.adb (Analyze_Pre_Post_Condition): Fix typos.
        * sem_warn.adb (Warn_On_Overlapping_Actuals): Edit comments:
        remove hyphen, add missing word.

2020-06-17  Bob Duff  <duff@adacore.com>

        * libgnat/a-cbdlli.adb, libgnat/a-cbhama.adb,
        libgnat/a-cbhase.adb, libgnat/a-cbmutr.adb,
        libgnat/a-cborma.adb, libgnat/a-cborse.adb,
        libgnat/a-cdlili.adb, libgnat/a-chtgbk.adb,
        libgnat/a-chtgke.adb, libgnat/a-cidlli.adb,
        libgnat/a-cihama.adb, libgnat/a-cihase.adb,
        libgnat/a-cimutr.adb, libgnat/a-ciorma.adb,
        libgnat/a-ciorse.adb, libgnat/a-cobove.adb,
        libgnat/a-cohama.adb, libgnat/a-cohase.adb,
        libgnat/a-coinve.adb, libgnat/a-comutr.adb,
        libgnat/a-convec.adb, libgnat/a-coorma.adb,
        libgnat/a-coorse.adb, libgnat/a-crbtgk.adb,
        libgnat/a-crbtgo.adb, libgnat/a-rbtgso.adb: Move tampering
        checks earlier.

2020-06-17  Eric Botcazou  <ebotcazou@adacore.com>

        * exp_attr.adb (Get_Integer_Type): Use standard types without
        a specific size.
        * sem_res.adb (Resolve_Unchecked_Type_Conversion): Remove a
        redundant intermediate conversion to Universal_Integer.

2020-06-17  Piotr Trojanek  <trojanek@adacore.com>

        * sem_util.ads, sem_util.adb (Get_Iterable_Type_Primitive): Fix
        comment and enforce it with an assertion in the body.

2020-06-17  Ed Schonberg  <schonberg@adacore.com>

        * sem_ch3.adb (Analyze_Full_Type_Declaration): For an
        access_to_subprogram declaration that has aspect specifications,
        call Build_Access_ Subprogram_Wrapper at once, so that pre- and
        postcondition aspects are analyzed in the context of a
        subprogram declaration.
        (Build_Access_Subprogram_Wrapper): Examine aspect specifications
        of an Access_To_Subprogram declaration. If pre- or
        postconditions are declared for it, create declaration for
        subprogram wrapper and add the corresponding aspect
        specifications to it. Replace occurrences of the type name by
        that of the generated subprogram, so that attributes 'Old and
        'Result can appear in a postcondition.
        * exp_ch3.adb (Build_Access_Subprogram_Wrapper_Body): Moved
        here from sem_prag.adb.
        * exp_ch3.ads (Build_Access_Subprogram_Wrapper_Body): Visible
        subprogram.
        * sem_prag.adb (Build_Access_Subprogram_Wrapper / _Body): Moved
        to sem_ch3.adb and exp_ch3.adb.

2020-06-17  Piotr Trojanek  <trojanek@adacore.com>

        * atree.adb (Preserve_Comes_From_Source): Rewrite using
        Set_Comes_From_Source and Comes_From_Source, which enforce that
        the parameters are valid.
        * exp_ch4.adb, exp_ch5.adb, sem_ch12.adb, sem_ch6.adb,
        sem_res.adb: Rewrite using Preserve_Comes_From_Source.

2020-06-17  Arnaud Charlet  <charlet@adacore.com>

        * libgnat/a-nbnbin.ads, libgnat/a-nbnbre.ads: Remove obsolete
        comments.

2020-06-17  Gary Dismukes  <dismukes@adacore.com>

        * aspects.ads (type Aspect_Id): Add Aspect_Static as a Boolean
        aspect, and update the Is_Representation_Aspect, Aspect_Names,
        and Aspect_Delay arrays.
        * exp_ch6.adb (Expand_Simple_Function_Return): In the case of a
        return for a static expression function, capture a copy of the
        expression of the return statement before it's expanded and
        reset its Analyzed flags. Then, just before leaving this
        procedure, if the expression was rewritten, set the
        Original_Node of the rewritten expression to the new copy and
        also set the Expression of the associated static expression
        function to designate that copy. This ensures that later copies
        of the expression made via New_Copy_Tree will fully copy all
        nodes of the expression tree.
        * inline.ads (Inline_Static_Expression_Function_Call): New
        procedure to evaluate and produce the result of a static call to
        a static expression function.
        * inline.adb: Add with and use for Sem_Res.
        (Establish_Actual_Mapping_For_Inlined_Call): New procedure
        extracted from code in Expand_Inlined_Call that traverses the
        actuals and formals of an inlined call and in some cases creates
        temporaries for holding the actuals, plus establishes an
        association between formals and actuals (via the Renamed_Object
        fields of the formals).
        (Formal_Is_Used_Once): Function removed from Expand_Inlined_Call
        and now nested in the above procedure.
        (Expand_Inlined_Call): Code for doing the formal/actual
        traversal is moved to Create_Actual_Temporaries and replaced
        with a call to that new procedure.
        (Inline_Static_Expression_Function_Call): New procedure to
        evaluate a static call to a static expression function,
        substituting actuals for their corresponding formals and
        producing a fully folded and static result expression. The
        function has subsidiary functions Replace_Formal and Reset_Sloc
        that take care of doing the mapping of formals to actuals and
        resetting the Slocs of subnodes of the mapped expression to that
        of the call so errors will be flagged on the call rather than
        function.
        * sem_ch6.adb (Analyze_Expression_Function): In the case of a
        static expression function, perform an additional preanalysis of
        the function's expression to ensure that it's a potentially
        static expression (according to the requirements of
        6.8(3.2/5-3.4/5)), and issue an error if it's not. The global
        flag Checking_Potentially_Static_Expression is set and unset
        around this checking.
        * sem_ch13.adb (Analyze_Aspect_Static): New procedure to enforce
        selected requirements of the new aspect Static on expression
        functions, including checking that the language version is
        Ada_2020 and that the entity to which it applies is an
        expression function whose formal parameters are of a static
        subtype and have mode 'in', its result subtype is a static
        subtype, and it has no pre- or postcondition aspects. A ???
        comment is added to indicate the need for adding checking that
        type invariants don't apply to the result type if the function
        is a boundary entity.
        (Analyze_One_Aspect): Call Analyze_Aspect_Static for aspect
        Static.
        * sem_elab.adb (Build_Call_Marker): Return without creating a
        call marker when the subprogram is a static expression function,
        since no ABE checking is needed for such functions.
        * sem_eval.ads (Checking_Potentially_Static_Expression): New
        function to return whether the checking for potentially static
        expressions is enabled.
        (Set_Checking_Potentially_Static_Expression): New procedure to
        enable or disable checking of potentially static expressions.
        * sem_eval.adb (Checking_For_Potentially_Static_Expression): New
        global flag for determining whether preanalysis of potentially
        static expression is being done, which affects the behavior of
        certain static evaluation routines.
        (Checking_Potentially_Static_Expression): New function to return
        whether the checking for potentially static expressions is
        enabled.
        (Eval_Call): When evaluating a call within a static expression
        function with checking of potentially static expression
        functions enabled, substitutes a static value in place of the
        call to allow folding of the expression.
        (Eval_Entity_Name): When evaluating a formal parameter of a
        static expression function with checking of potentially static
        expression functions enabled, substitutes a static value in
        place of the reference to the formal to allow folding of the
        expression.
        (Set_Checking_Potentially_Static_Expression): New procedure to
        enable or disable checking of potentially static expressions.
        * sem_res.adb (Resolve_Call): Test for a recursive call
        occurring within a static expression function and issue an error
        for such a call. Prevent the establishment of a transient scope
        in the case this is a call to a (string-returning) static
        expression function. When calling a static expression function,
        if no error has been posted on the function, call
        Inline_Static_Expression_Function_Call to convert the call into
        its equivalent static value.
        * sem_util.ads (Is_Static_Expression_Function): New function
        returning whether the subprogram entity passed to it is a static
        expression function.
        (Is_Static_Expression_Function_Call): New function to determine
        whether the call node passed to it is a static call to a static
        expression function.
        * sem_util.adb (Compile_Time_Constraint_Error): Suppress
        compile-time Constraint_Error reporting when checking for a
        potentially static expression.
        (Is_Static_Expression_Function): New function returning whether
        the subprogram entity passed to it is a static expression
        function by testing for the presence of aspect Static.
        (Has_All_Static_Actuals): New function in
        Is_Static_Expression_Function_Call that traverses the actual
        parameters of a function call and returns True only when all of
        the actuals are given by static expressions. In the case of a
        string-returning function, we call Resolve on each actual to
        ensure that their Is_Static_Expression flag properly reflects
        whether they're static, to allow suppressing creation of a
        transient scope within Resolve_Call. A prominent ??? comment is
        added to explain this rather unconventional call to Resolve.
        (Is_Static_Expression_Function_Call): New function that
        determines whether a node passed to it is a call to a static
        expression function all of whose actual parameters are given by
        static expressions.

2020-06-17  Eric Botcazou  <ebotcazou@adacore.com>

        * exp_ch4.adb (Optimize_Length_Comparison): New local variable to
        record whether this may be a dynamic superflat case.
        (Is_Optimizable): Accept 0 as lower bound and set it in this case,
        but return false if the operand is not a length too.
        (Rewrite_For_Equal_Lengths): New procedure.
        Optimize the comparison of two lengths in the superflat case when
        the arrays have the same bounds.

2020-06-17  Eric Botcazou  <ebotcazou@adacore.com>

        * doc/gnat_rm/implementation_defined_attributes.rst (Bit): Sharpen
        the comparison with System.Storage_Unit.
        (Descriptor_Size): Clear confusion about alignment and padding.
        * gnat_rm.texi: Regenerate.

2020-06-17  Eric Botcazou  <ebotcazou@adacore.com>

        * exp_attr.adb (Expand_N_Attribute_Reference) <Attribute_First>:
        Do not replace the bound for an array type if it is public.

2020-06-17  Eric Botcazou  <ebotcazou@adacore.com>

        * exp_ch4.adb (Optimize_Length_Comparison): Make sure the base
        types are the same when comparing Y'Last and X'Last directly.

2020-06-17  Eric Botcazou  <ebotcazou@adacore.com>

        * exp_attr.adb (Expand_N_Attribute_Reference) <Attribute_First>:
        Replace it with a direct reference to an entity which is not a
        discriminant for constrained array types.  Add same condition
        for scalar types.
        <Attribute_Last>: Merge with above implementation.
        * exp_ch4.adb (Optimize_Length_Comparison): Be prepared for a
        second entity whose length is compared.  Rename Prepare_64 to
        Convert_To_Long_Long_Integer.  If the second entity is present,
        compute the difference of the 'First attributes and compare the
        sum of 'Last of the second entity with this difference against
        'Last of the first entity.  Add a special case when the 'First
        attributes are equal.  Suppress overflow checks in all cases.

2020-06-17  Piotr Trojanek  <trojanek@adacore.com>

        * doc/gnat_rm/implementation_defined_pragmas.rst, lib-writ.ads,
        par-prag.adb, sem_ch12.adb, sem_ch8.adb, sem_prag.adb: Fix
        casing of GNATprove.
        * gnat_rm.texi: Regenerate.

2020-06-17  Piotr Trojanek  <trojanek@adacore.com>

        * checks.adb (Generate_Range_Check): Simplify redundant
        condition.
        * sem_ch3.adb (Check_Initialization, Process_Discriminants):
        Likewise.
        * sem_ch6.adb (Analyze_Subprogram_Body_Helper): Likewise.

2020-06-17  Eric Botcazou  <ebotcazou@adacore.com>

        * exp_fixd.adb (Build_Conversion): Also preserve the
        Conversion_OK flag of an inner conversion.

2020-06-17  Piotr Trojanek  <trojanek@adacore.com>

        * sem_ch5.adb (Analyze_Iterator_Specification): Enable expansion
        that creates a renaming that removes side effects from the
        iterated object in the GNATprove mode; then analyze reference to
        this renaming (it is required for GNATprove and harmless for
        GNAT).

2020-06-16  Eric Botcazou  <ebotcazou@adacore.com>

        * sinfo.ads (Conversion_OK): Document use for 'Pos and 'Val.
        * exp_attr.adb (Get_Integer_Type): New function returning a
        small integer type appropriate for an enumeration type.
        (Expand_N_Attribute_Reference) <Attribute_Enum_Rep>: Call it.
        <Attribute_Pos>: For an enumeration type with a standard
        representation, expand to a conversion with Conversion_OK.
        <Attribute_Val>: Likewise.
        * exp_ch4.adb (Expand_N_Type_Conversion): Do not expand when
        the target is an enumeration type and Conversion_OK is set.

2020-06-16  Eric Botcazou  <ebotcazou@adacore.com>

        * sem_ch4.adb (Common_Type): Go to Underlying_Full_View, if any.

2020-06-16  Richard Kenner  <kenner@adacore.com>

        * exp_unst.adb (Subp_Index): Change way we detect internal
        protected subprograms.

2020-06-16  Richard Kenner  <kenner@adacore.com>

        * comperr.adb (Compiler_Abort): Clarify message displayed to
        customers.

2020-06-16  Piotr Trojanek  <trojanek@adacore.com>

        * checks.adb, doc/gnat_ugn/the_gnat_compilation_model.rst,
        einfo.ads, exp_ch5.adb, exp_ch7.adb, lib-xref.ads,
        libgnat/g-spitbo.ads, make.adb, sem_aux.adb, sem_ch3.adb,
        sem_ch4.adb, sem_ch5.adb, urealp.adb: Fix wrong casing.
        * gnat_ugn.texi: Regenerate.

2020-06-16  Piotr Trojanek  <trojanek@adacore.com>

        * einfo.adb, exp_spark.adb, exp_util.adb, sem_eval.adb: Replace
        "Ekind ... in Object_Kind" with "Is_Object (...)".

2020-06-16  Piotr Trojanek  <trojanek@adacore.com>

        * sem_warn.adb (Warn_On_Overlapping_Actuals): Fix typo in
        comment.

2020-06-16  Piotr Trojanek  <trojanek@adacore.com>

        * exp_util.adb (Evaluate_Name): Force evaluation of aggregates;
        recursively evaluate expression of a qualified expression; fix
        location of the comment for an attribute referenced and an
        indexed component.

2020-06-16  Eric Botcazou  <ebotcazou@adacore.com>

        * freeze.adb (Freeze_Expression): Use consistent style and
        formatting in a couple of cases.

2020-06-16  Steve Baird  <baird@adacore.com>

        * libgnat/a-nbnbin.ads, libgnat/a-nbnbre.ads: Uncomment the
        commented-out Integer_Literal aspect specification for type
        Big_Integer.

2020-06-16  Javier Miranda  <miranda@adacore.com>

        * exp_ch6.adb (BIP_Suffix_Kind, Check_BIP_Actuals,
        Is_Build_In_Place_Entity): New subprograms.
        (Make_Build_In_Place_Call_In_Allocator,
        Make_Build_In_Place_Call_In_Anonymous_Context,
        Make_Build_In_Place_Call_In_Assignment,
        Make_Build_In_Place_Call_In_Object_Declaration): Add assertions.
        (Needs_BIP_Task_Actuals): Add missing support for thunks.
        (Expand_Actuals): Ensure that the BIP call has available an
        activation chain and the _master variable.
        * exp_ch9.adb (Find_Enclosing_Context): Initialize the list of
        declarations of empty blocks when the _master variable must be
        declared and the list was not available.

2020-06-16  Bob Duff  <duff@adacore.com>

        * par-ch4.adb (P_Case_Expression): Move to be local.
        (P_Declare_Expression): New parsing routine.
        (P_Unparen_Cond_Expr_Etc): New name for
        P_Unparen_Cond_Case_Quant_Expression which was missing one case
        in its name (iterated component association), and we're adding a
        new case (declare expression), so lets use "Etc" instead of
        trying to pack all those things into the name.  Add call to
        P_Declare_Expression, and check for missing parens.
        (P_Expression_If_OK, P_Expression_Or_Range_Attribute_If_OK): Add
        Tok_Declare.
        * par.adb (P_Basic_Declarative_Items): Add parameter
        Declare_Expression so we can tailor the error message about
        incorrect bodies.
        (P_Case_Expression): Move to body.
        * par-ch3.adb (P_Basic_Declarative_Items): Tailor the error
        message about incorrect bodies.
        * par-ch7.adb (P_Package): Pass Declare_Expression => False to
        P_Basic_Declarative_Items.
        * sem.ads (In_Declare_Expr): Counter used to determine whether
        we are analyzing a declare_expression. Needed to give errors
        about things that are not allowed in declare_expression, such as
        the 'Access attribute.
        * sem.adb (Do_Analyze): Save/restore In_Declare_Expr.
        * sem_ch4.adb (Analyze_Expression_With_Actions): Give this node
        its own scope.  That seems better in general, but it is
        necessary for declare_expressions.  For example, an identifier
        declared in a declare_expression should not clash with the same
        identifier in an outer scope.  If this is a declare_expression,
        indicated by Comes_From_Source, then check legality rules, and
        incr/decr In_Declare_Expr.
        * sem_aggr.adb (Resolve_Aggregate): Allow an applicable index
        constraint for a declare_expression, so if its expression is an
        array aggregate, it can have "others => ...".
        * sem_attr.adb (Analyze_Access_Attribute): Disallow these
        attributes in declare_expressions. Add comment to make it clear
        that Unrestricted_Access is included.
        * sinfo.ads, sinfo.adb, atree.ads, atree.adb: Remove the
        now-incorrect comment in sinfo.ads that says
        N_Expression_With_Actions has no proper scope.  Add 17-parameter
        versions of Nkind_In.  Remove the 16-parameter versions of
        Nkind_In.

2020-06-16  Arnaud Charlet  <charlet@adacore.com>

        * sem_aux.ads, sem_aux.adb (Is_Record_Or_Limited_Type): New
        function.
        * exp_ch4.adb, sem_ch4.adb (Analyze_Membership_Op,
        Expand_Set_Membership.Make_Cond): Choose between primitive and
        predefined equality for membership tests.

2020-06-16  Ed Schonberg  <schonberg@adacore.com>

        * sem_warn.adb (Warn_On_Overlapping_Actuals): Simplify code and
        implement AI12-0216 which clarifies the conditions under which
        overlapping actuals in a call are illegal. If proper warnings
        are enabled, GNAT also emits warnings in legal cases of
        overlopping actuals.

2020-06-16  Eric Botcazou  <ebotcazou@adacore.com>

        * freeze.adb (Freeze_Expression): Stop climbing the parent chain
        at a N_{Case,If}_Expression node for a type or an entity that
        does not come from source.

2020-06-16  Steve Baird  <baird@adacore.com>

        * snames.ads-tmpl: Define names of the three new aspects.
        * aspects.ads: Define the three new aspects.
        * sem_util.ads, sem_util.adb, sem_dim.adb: Move the function
        String_From_Numeric_Literal from being declared in the body of
        package Sem_Dim to being declared in the visible part of package
        Sem_Util.
        * sem_ch13.ads, sem_ch13.adb: Declare new visible procedure
        Validate_Literal_Aspect. This is where most of the legality
        checking occurs for an aspect specification for one of the three
        new aspects, as well as resolution of the subprogram named in
        the aspect specification. Follow example of other aspects (e.g.,
        Validate_Literal_Aspect is called in much the same way as
        Validate_Iterable_Aspect in Analyze_Aspects_At_Freeze_Point; a
        small amount of legality checking is performed in
        Analyze_One_Aspect in much the same way as for Default_Value or
        Default_Component_Value aspects). Most of the work is done in
        Validate_Literal_Aspect.
        * contracts.adb (Add_Contract_Item): Call
        Validate_Literal_Aspect in much the same way that
        Validate_Iterable_Aspect was already being called.
        * sem_res.adb (Resolve): Rewrite a literal as a call if it is a
        user-defined literal.  This is where the dynamic semantics of
        the 3 new aspects are implemented.
        * sem_ch6.adb (Fully_Conformant_Expressions): Two numeric
        literals that have different text but the same value (e.g.,
        12345 and 12_345) do not conform if they are user-defined
        literals. Introduce a new function
        User_Defined_Numeric_Literal_Mismatch to avoid duplication in
        making this check.
        * sem_type.adb (Has_Compatible_Type): A numeric literal can be
        compatible with a non-numeric type (and a string literal can be
        compatible with a non-string type) if it can be interpreted as a
        user-defined literal.

2020-06-16  Arnaud Charlet  <charlet@adacore.com>

        * sem_aggr.adb (Resolve_Extension_Aggregate): Fix implementation
        of AI05-0115 by checking the correct type.

2020-06-16  Arnaud Charlet  <charlet@adacore.com>

        * sem_ch6.adb (Analyze_Subprogram_Specification): Generate error
        message for functions returning interfaces.

2020-06-16  Piotr Trojanek  <trojanek@adacore.com>

        * sem_ch13.adb (Membership_Entry): Relax assertion to also
        recognize qualified identifiers.

2020-06-16  Piotr Trojanek  <trojanek@adacore.com>

        * exp_util.adb (Evaluate_Name): Force evaluation of operators.

2020-06-16  Arnaud Charlet  <charlet@adacore.com>

        * sem_ch4.adb (Analyze_Membership_Op): Reset entity of equality
        nodes for membership tests with singletons.
        (Analyze_User_Defined_Binary_Op): Always perform the analysis
        since nodes coming from the expander also may refer to non
        standard operators as part of membership expansion.
        * exp_ch4.adb (Expand_Set_Membership.Make_Cond): Reset entity of
        equality node.
        * sem_type.ads: Fix typo in comment.

2020-06-16  Ghjuvan Lacambre  <lacambre@adacore.com>

        * sem_attr.adb (Analyze_Attribute): Add
        Check_Not_Incomplete_Type call.

2020-06-16  Gary Dismukes  <dismukes@adacore.com>

        * sem_ch6.adb: Add closing paren in a comment.
        * sem_util.adb: Correct comment typo (aggreate => aggregate).

2020-06-16  Javier Miranda  <miranda@adacore.com>

        * sem_prag.adb (Process_Restrictions_Or_Restriction_Warnings):
        Code cleanup.

2020-06-16  Eric Botcazou  <ebotcazou@adacore.com>

        * freeze.adb (In_Expanded_Body): Remove unreachable code.
        (Freeze_Expression): Rename a couple of local variables.
        In the case of an expanded body, also freeze locally the
        entities declared in a nested block.

2020-06-16  Eric Botcazou  <ebotcazou@adacore.com>

        * sem_ch4.adb (Transform_Object_Operation): Document that it
        may be partially destructive for the parent of the node.
        (Try_Object_Operation): Undo the changes made above on failure.

2020-06-16  Javier Miranda  <miranda@adacore.com>

        * restrict.adb (Global_No_Tasking): Adding
        Targparm.Restrictions_On_Target Fixes regressions with zfp.

2020-06-16  Ed Schonberg  <schonberg@adacore.com>

        * freeze.adb: (Freeze_Expression, In_Expanded_Body): Treat the
        generated body of an expression function like other bodies
        generated during expansion (e.g. stream subprograms) so that
        those bodies are not treated as freezing points. Handle properly
        other global references in such completions.

2020-06-16  Piotr Trojanek  <trojanek@adacore.com>

        * sem_ch8.adb (Analyze_Object_Renaming): Remove trivially
        useless initialization of Is_Object_Reference.
        * sem_util.adb (Is_Object_Reference): Simplify detection of
        binary and unary operators; literally implement rules about
        aggregates and qualified expressions; recognize string literals
        as object references.

2020-06-16  Eric Botcazou  <ebotcazou@adacore.com>

        * sem_ch12.adb (Validate_Derived_Type_Instance): Reword error
        message for 12.5.1(8) subclause and add secondary message if
        the incompatibility comes from the predicates.
        * sem_ch3.adb (Check_Constraining_Discriminant): New procedure
        to give the error required by the 3.7(15) subclause.  Mention
        "statically" in the error message and add secondary message
        if the incompatibility comes from the predicates.
        (Build_Derived_Concurrent_Type): Call it when a new discriminant
        constrains an old one.
        (Build_Derived_Record_Type): Likewise.
        * sem_eval.ads (Predicates_Compatible): Declare.
        * sem_eval.adb (Predicates_Compatible): New function to implement
        the compatibility of predicates specified by the 4.9.1 clause.
        (Subtypes_Statically_Compatible): Call it.

2020-06-15  Eric Botcazou  <ebotcazou@adacore.com>

        * sem_eval.ads (Predicates_Match): Fix description.
        * sem_eval.adb (Predicates_Match): Rewrite.

2020-06-15  Ed Falis  <falis@adacore.com>

        * Makefile.rtl: Change name of hie/g-io__vxworks-ppc-cert.adb.

2020-06-15  Arnaud Charlet  <charlet@adacore.com>

        * sem_ch8.adb (Premature_Usage): Add support for subtype
        references and replace set of if-then-else by a case statement.

2020-06-15  Piotr Trojanek  <trojanek@adacore.com>

        * sem_prag.adb (Analyze_Depends_In_Decl_Part,
        Analyze_Global_In_Decl_Part): Bring back task discriminants for
        analysis of the Global/Depends contracts; add comments.

2020-06-15  Eric Botcazou  <ebotcazou@adacore.com>

        * einfo.ads (Return_Applies_To): Document special usage for E_Block.
        * einfo.adb (Write_Field8_Name): Write it for E_Block too.
        * exp_ch4.adb (Expand_N_Type_Conversion): Remove implementation of
        the check prescribed by AI05-0073.
        * exp_ch6.adb (Apply_CW_Accessibility_Check): New procedure to apply
        the check prescribed by AI95-344 extracted from...
        (Expand_N_Extended_Return_Statement): Apply the check prescribed by
        AI95-344 to the expression, if present.  Suppress only access checks
        when analyzing the rewritten result.
        (Expand_Simple_Function_Return): ...here.  Rename local variable.
        Call Apply_CW_Accessibility_Check to apply the check prescribed by
        AI95-344, but do not do it for the simple return statement generated
        by the expansion of an extended return statement.  Apply the check
        prescribed by AI05-0073 to all functions returning anonymous access
        type designating a specific tagged type, but not if the expression
        was null or tag checks are suppressed for the type, and use Not In
        operator rather than comparing the tags explicitly.
        * sem.adb (Analyze): Handle all Suppress values.
        * sem_ch6.adb (Analyze_Function_Return): Do not explicitly apply
        predicate checks in the case of an extended return statement.
        Do not apply an implicit conversion to the anonymous access result
        type in the case of the simple return statement generated by the
        expansion of an extended return statement.
        (New_Overloaded_Entity): Small comment tweak.
        * treepr.adb (Print_Node): Fix typo in flag string.

2020-06-15  Bob Duff  <duff@adacore.com>

        * exp_put_image.ads, exp_put_image.adb
        (Image_Should_Call_Put_Image): New function to determine whether
        the call to Put_Image should be generated.
        (Build_Image_Call): New procedure to generate the call to
        Put_Image.
        * exp_imgv.adb (Expand_Image_Attribute): Use underlying types to
        bypass privacy (only in Ada 2020). If
        Image_Should_Call_Put_Image is True (which happens only in Ada
        2020), then call Build_Image_Call.
        * rtsfind.ads, rtsfind.adb: Add the necessary declarations in
        Ada.Strings.Text_Output.Buffers.
        * sem_attr.adb (Check_Image_Type): Enable the Ada 2020 case.
        * libgnat/a-stoufo.ads, libgnat/a-stoufo.adb: Use the less
        restrictive type that allows newline characters.

2020-06-15  Gary Dismukes  <dismukes@adacore.com>

        * exp_ch9.ads (Build_Master_Declaration): Add commas.
        * exp_ch9.adb (Build_Master_Entity): Spelling fix ("build" =>
        "built").
        (Build_Task_Activation_Call): Fix word order.

2020-06-15  Arnaud Charlet  <charlet@adacore.com>

        * libgnat/a-nbnbin.ads (Big_Positive, Big_Natural): Fix
        predicate.

2020-06-15  Piotr Trojanek  <trojanek@adacore.com>

        * sem_ch13.adb (Analyze_Aspect_Relaxed_Initialization): Fix
        dealing with scopes on subprogram bodies that act as specs.
        * sem_util.adb (Has_Relaxed_Initialization): Fix trivial
        mistake.

2020-06-15  Javier Miranda  <miranda@adacore.com>

        * restrict.ads (Set_Global_No_Tasking, Global_No_Tasking): New
        subprograms.
        * restrict.adb (Set_Global_No_Tasking, Global_No_Tasking): New
        subprograms.
        * sem_ch3.adb (Access_Definition): Do not skip building masters
        since they may be required for BIP calls.
        (Analyze_Subtype_Declaration): Propagate attribute
        Is_Limited_Record in class-wide subtypes and subtypes with
        cloned subtype attribute; propagate attribute
        Is_Limited_Interface.
        * sem_ch6.adb (Check_Anonymous_Return): Do not skip building
        masters since they may be required for BIP calls. Use
        Build_Master_Declaration to declare the _master variable.
        (Create_Extra_Formals): Add decoration of Has_Master_Entity when
        the _master formal is added.
        * exp_ch3.adb (Init_Formals): Adding formal to decorate it with
        attribute Has_Master_Entity when the _master formal is added.
        (Build_Master): Do not skip building masters since they may be
        required for BIP calls.
        (Expand_N_Object_Declaration): Ensure activation chain and
        master entity for objects initialized with BIP function calls.
        * sem_prag.adb (Process_Restrictions_Or_Restriction_Warnings):
        Adding support to detect and save restriction No_Tasking when
        set in the run-time package System or in a global configuration
        pragmas file.
        * sem_util.adb (Current_Entity_In_Scope): Overload this
        subprogram to allow searching for an entity by its Name.
        * sem_util.ads (Current_Entity_In_Scope): Update comment.
        * exp_ch4.adb (Expand_N_Allocator): Do not skip building masters
        since they may be required for BIP calls.
        * exp_ch6.ads (Might_Have_Tasks): New subprogram.
        * exp_ch6.adb (Make_Build_In_Place_Call_In_Allocator): Add
        support for BIP calls returning objects that may have tasks.
        (Make_Build_In_Place_Call_In_Allocator): Build the activation
        chain if the result might have tasks.
        (Make_Build_In_Place_Iface_Call_In_Allocator): Build the class
        wide master for the result type.
        (Might_Have_Tasks): New subprogram.
        (Needs_BIP_Task_Actuals): Returns False when restriction
        No_Tasking is globally set.
        * exp_ch9.ads (Build_Master_Declaration): New subprogram.
        * exp_ch9.adb (Build_Activation_Chain_Entity): No action
        performed when restriction No_Tasking is globally set.
        (Build_Class_Wide_Master): No action performed when restriction
        No_Tasking is globally set; use Build_Master_Declaration to
        declare the _master variable.
        (Build_Master_Declaration): New subprogram.
        (Build_Master_Entity): No action performed when restriction
        No_Tasking is globally set; added support to handle transient
        scopes and _finalizer routines.
        (Build_Master_Renaming): No action performed when restriction
        No_Tasking is globally set.
        (Build_Task_Activation_Call): Skip generating the call when
        the chain is an ignored ghost entity.
        (Find_Master_Scope): Generalize the code that detects transient
        scopes with master entity.
        * einfo.ads (Has_Nested_Subprogram): Minor comment reformatting.

2020-06-15  Arnaud Charlet  <charlet@adacore.com>

        * sem_attr.adb (Eval_Attribute): Protect against previous
        errors.
        * sem_ch13.adb (Analyze_Aspect_Default_Value): Remove redundant
        error checking, handling in Analyze_Aspect_Specifications.
        (Analyze_Aspect_Specifications): Refine error messages on
        Default_[Component_]Value.
        (Check_Aspect_Too_Late): New procedure.
        (Rep_Item_Too_Late.Is_Derived_Type_With_Constraint): Remove,
        dead code.
        * aspects.ads (Is_Representation_Aspect): Default_Value is a
        representation aspect.

2020-06-15  Arnaud Charlet  <charlet@adacore.com>

        * libgnat/a-wichha.ads, libgnat/a-wichha.adb,
        libgnat/a-wichun.ads, libgnat/a-wichun.adb (Is_Basic, To_Basic):
        New.
        * libgnat/s-utf_32.ads, libgnat/s-utf_32.adb (Is_UTF_32_Basic,
        To_UTF_32_Basic, Decomposition_Search): New subprograms.
        (Unicode_Decomposition): New table.

2020-06-15  Gary Dismukes  <dismukes@adacore.com>

        * exp_ch6.adb (Add_Call_By_Copy_Code): In the case of a view
        conversion passed to a scalar out-mode parameter where the
        formal has Default_Value set, declare the copy temp with the
        base type of the formal's subtype and initialize the copy temp
        with the actual's value.

2020-06-15  Justin Squirek  <squirek@adacore.com>

        * exp_ch4.adb (Expand_N_Case_Expression): Set default value for
        Target to silence potential warnings.
        (Expand_N_If_Expression): Add calculation to check when the if
        expression is used directly in the context of an actual of an
        anonymous access type and add a special path to force expansion
        of the if expression in this case.
        * exp_ch6.adb (Expand_Branch): Generate an assignment to the
        level temporary for a given branch.
        (Expand_Call_Helper): Add expansion to allow for creating a
        temporary to store associated accessiblity levels on each branch
        of the conditional expression.  Also perform expansion of
        function calls into expressions with actions, and fixup
        references to N with Call_Node.
        (Insert_Level_Assign): Move through nested conditional
        expressions to each branch.
        * sem_util.ads, sem_util.adb (Is_Anonymous_Access_Actual): Added
        to detect when to force expansion of if expressions.

2020-06-15  Piotr Trojanek  <trojanek@adacore.com>

        * sem_prag.adb (Analyze_Depends_In_Decl_Part,
        Analyze_Global_In_Decl_Part): Do not install task discriminants
        for analysis of the Global/Depends contracts.

2020-06-15  Piotr Trojanek  <trojanek@adacore.com>

        * contracts.adb (Analyze_Object_Contract): Do not expect
        Global/Depends on single protected units.

2020-06-15  Justin Squirek  <squirek@adacore.com>

        * sem_res.adb (Valid_Conversion): Add missing condition to
        trigger proper static accessiblity failiures when the target
        type is an anonymous access.

2020-06-15  Piotr Trojanek  <trojanek@adacore.com>

        * exp_ch6.adb (Expand_Call_Helper): Replace repeated Ekind with
        Ekind_In.

2020-06-15  Piotr Trojanek  <trojanek@adacore.com>

        * exp_ch6.adb, sem_util.adb: Remove excessive parents,
        especially since they don't make the code any easier to read.

2020-06-15  Piotr Trojanek  <trojanek@adacore.com>

        * aspects.ads (Aspect_Id): Add Aspect_Relaxed_Initialization.
        (Implementation_Defined_Aspect): Add new aspect.
        (Aspect_Argument): Add new aspect with Optional_Expression
        argument.
        (Is_Representation_Aspect): Add new aspect as a
        non-representation one.
        (Aspect_Names): Add name for the new aspect.
        (Aspect_Delay): Add new aspect as a non-delayed one.
        * sem_ch3.adb: Minor reformatting.
        * einfo.ads, einfo.adb (Is_Relaxed_Initialization_State): New
        query; reuses existing code for querying abstract state options.
        * exp_attr.adb (Expand_N_Attribute_Reference): For now ignore
        attribute 'Initialized.
        * sem_attr.adb (Analyze_Attribute_Old_Result): Allow attribute
        'Result to be used in the aspect Relaxed_Initialization
        expression.
        (Analyze_Attribute): Analyze attribute 'Initialized; based on
        existing code for attribute 'Valid_Scalars.
        (Eval_Attribute): Do not expect attribute 'Initialized, just
        like attribute 'Valid_Scalars is not expected.
        * sem_ch13.adb (Analyze_Aspect_Relaxed_Initialization): New
        routine.
        (Analyze_Aspect_Specifications): Analyze new aspect in a
        dedicated routine.
        (Check_Aspect_At_Freeze_Point): Do not expect new aspect.
        * sem_prag.adb (Analyze_Abstract_State): Support option
        Relaxed_Initialization on abstract states.
        * sem_util.ads, sem_util.adb (Has_Relaxed_Initialization): New
        query for the GNATprove backend.
        * snames.ads-tmpl (Snames): Add Name_Ids for the new aspect and
        attribute; add an Attribute_Id for the new attribute.

2020-06-15  Bob Duff  <duff@adacore.com>

        * exp_put_image.adb, libgnat/s-putima.adb, libgnat/s-putima.ads,
        rtsfind.ads: Enable Put_Image if Is_Access_Subprogram_Type (Typ).
        Remove comment saying it's disabled in that case.  Rename
        Put_Image_Access_Prot to be Put_Image_Access_Prot_Subp to
        clarify that we're talking about access-to-subprogram, not
        access-to-protected-object.

2020-06-15  Bob Duff  <duff@adacore.com>

        * sem_attr.adb (Check_Image_Type): New procedure for checking
        the type, depending on language version. Disable the Ada 2020
        support until the corresponding expander work is done.
        (Analyze_Image_Attribute): Call Check_Image_Type.  Rearrange the
        code to be simplier and more logical.  When P_Type is modified,
        modify P_Base_Type accordingly.
        * sem_util.adb (Is_Object_Image): Do not return False if the
        prefix is a type. X'Image should be considered an image of an
        object iff X is an object (albeit illegal pre-2020 if
        nonscalar).

2020-06-15  Bob Duff  <duff@adacore.com>

        * libgnat/s-putima.ads, libgnat/s-putima.adb
        (Put_Image_Access_Subp, Put_Image_Access_Prot): New procedures
        for printing access-to-subprogram objects.  Remove an explicit
        " ", because Put_Image includes the annoying leading blank.
        * rtsfind.ads: Add new procedures in s-putima.
        * exp_put_image.adb: Call new procedures as appropriate.

2020-06-15  Bob Duff  <duff@adacore.com>

        * exp_imgv.adb (Expand_Image_Attribute): Allow private types.
        Put_Image generates Image for numeric types, and private types
        whose full type is numeric. This requires the Conversion_OK flag
        for integer and floating-point types. For fixed point, we need
        the extra conversion.
        * exp_put_image.adb (Build_Elementary_Put_Image_Call): Remove
        special handling of real types.
        (Enable_Put_Image): Enable for reals.

2020-06-15  Bob Duff  <duff@adacore.com>

        * exp_attr.adb (Put_Image): Use underlying type for strings.
        Remove unchecked union processing.
        * exp_put_image.adb (Tagged_Put_Image_Enabled): Use -gnatd_z to
        enable default Put_Image for tagged types.  This allows testing
        that feature.
        (Build_String_Put_Image_Call): Set Conversion_OK flag.
        (Make_Component_List_Attributes): Remove unchecked union
        processing.
        (Enable_Put_Image): Disable for unchecked unions.  Enable for
        nonscalar types (which were mistakenly disabled in earlier
        changes).
        * debug.adb: Document -gnatd_z switch.
        * libgnat/s-putima.adb (Put_Image_String, Put_Image_Wide_String,
        Put_Image_Wide_Wide_String): Double double-quote characters.
        Forget about special handling of control characters for now --
        that's rare enough to not be a priority, and it's not clear what
        the right thing to do is anyway.
        * namet.adb: Minor: Improve debugger-friendliness.
        * sinfo.ads: Minor: Add "???" comment.

2020-06-15  Piotr Trojanek  <trojanek@adacore.com>

        * sem_util.ads, sem_util.adb (Is_Renaming_Declaration): Remove.

2020-06-15  Ed Schonberg  <schonberg@adacore.com>

        * freeze.adb (Freeze_Expression): When traversing the tree
        looking for the proper insertion point for the freeze node of an
        entity that is declared in an outer scope, set the candidate
        subprogram body node properly.  Previous code has an off-by-one
        error.

2020-06-15  Eric Botcazou  <ebotcazou@adacore.com>

        * exp_attr.adb (Expand_N_Attribute_Reference) <Has_Same_Storage>:
        Do not do superfluous work.  Add the condition (X'Size /= 0) on
        both paths and turn binary AND into short-circuit AND THEN.

2020-06-15  Steve Baird  <baird@adacore.com>

        * sem_attr.adb (Analyze_Attribute): In the Loop_Entry case,
        replace a call to Statically_Denotes_Object with a call to
        Statically_Names_Object and clean up the preceding comment.

2020-06-15  Eric Botcazou  <ebotcazou@adacore.com>

        * sem_res.adb (Resolve_Set_Membership): Remove local variable.
        In the non-overloaded case, call Intersect_Types on the left
        operand and the first alternative to get the resolution type.
        But test the subtype of the left operand to give the warning.

2020-06-12  Steve Baird  <baird@adacore.com>

        * sem_res.adb (Valid_Conversion): The simpler cases of
        violations of the aforementioned 8.6 rule are already handled
        correctly. These include cases where the operand of the type
        conversion is an access parameter or a stand-alone object of an
        anonymous access type. Add code to detect violations where the
        operand of the type conversion is an access discriminant whose
        accessibility level is tied to one of the other simpler cases.
        This is implemented in a new function,
        Valid_Conversion.Is_Discrim_Of_Bad_Access_Conversion_Argument,
        which is called in place of the previous test.

2020-06-12  Bob Duff  <duff@adacore.com>

        * exp_attr.adb (Put_Image): Remove assertion. This assertion is
        False in mixed-Ada-version programs.
        * exp_put_image.adb (Tagged_Put_Image_Enabled): New flag to make
        it easy to experiment with Put_Image on tagged types. False in
        this version.
        (Enable_Put_Image): Enable in pre-2020.  Workarounds: Disable
        for tagged types if Tagged_Put_Image_Enabled is False. Disable
        for access-to-subprogram types.  Disable if errors have been
        detected, or Sink is unavailable.
        (Preload_Sink): Move all conditionals here, from Sem_Ch10, so
        they can be nearby related code in Enable_Put_Image.  Load Sink
        only if we have seen a tagged type.  This removes the dilemma
        about calling Preload_Sink when compiling the compiler, which
        caused unwanted dependences.
        * exp_put_image.ads (Preload_Sink): New formal Compilation_Unit,
        needed to move all conditionals here, from Sem_Ch10.
        * libgnat/a-stouut.adb (Put_UTF_8): Make this suitable for
        inlining, so we don't get warnings about inlining in some tests.
        And so it can be inlined!
        * opt.ads (Tagged_Seen): New flag (see Preload_Sink).
        * scng.adb (Scan): Set new Tagged_Seen flag.
        * sem_ch10.adb (Analyze_Compilation_Unit): Move conditionals and
        comments regarding Preload_Sink into Preload_Sink.

2020-06-12  Arnaud Charlet  <charlet@adacore.com>

        * sem_res.adb (Resolve_Actuals): Check for AI12-0074.

2020-06-12  Olivier Hainque  <hainque@adacore.com>

        * libgnat/s-secsta.ads (Memory_Alignment): New constant, memory
        alignment for chunks and allocated blocks. Initialize to
        Standard'Maximum_Alignment * 2.
        (Chunk_Memory): Use it.
        * libgnat/s-secsta.adb (Round_Up): Likewise.

2020-06-12  Piotr Trojanek  <trojanek@adacore.com>

        * par-prag.adb: Fix ordering.
        * snames.ads-tmpl (Name_Test_Case, Pragma_Test_Case): Likewise.
        * sem_prag.adb (Sig_Flags): Likewise.

2020-06-12  Arnaud Charlet  <charlet@adacore.com>

        * sem_res.adb (Resolve_Entity_Name): Fix handling of expressions
        containing array attributes wrt Ada 83 detection.

2020-06-12  Steve Baird  <baird@adacore.com>

        * sem_util.ads, sem_util.adb: Define 3 new Boolean-valued
        functions - Statically_Denotes_Entity,
        Statically_Denotes_Object, and Statically_Names_Object. The
        first two were taken from sem_attr.adb. The term "statically
        names" is defined in the Ada RM and the new function
        Statically_Names_Object is intended to reflect that definition,
        or more precisely, as described in a comment in the code, to
        reflect the expected future definition of that term.
        * sem_attr.adb: Delete functions Statically_Denotes_Object and
        Statically_Denotes_Entity; these two functions have been moved
        to package Sem_Util. Replace call to Statically_Denotes_Object
        with a call to Statically_Names_Object as per AI12-0217 (a
        binding interpretation, so no Ada_Version check).
        * exp_ch9.adb (Expand_Entry_Barrier.Is_Simple_Barrier): Change
        name of function (it was previously Is_Simple_Barrier_Name)
        because the function should return True in the case of a static
        expression; implement this requirement.  Change function to
        include a call to Statically_Names_Object so that, for Ada_2020
        and later, it will return True for appropriate subcomponent
        names.
        (Expand_Entry_Barrier.Is_Pure_Barrier): Handle
        N_Indexed_Component and N_Selected_Component cases by calling
        Statically_Names_Object.
        (Expand_Entry_Barrier): Reorganize to treat Simple_Barriers and
        Pure_Barriers more uniformly.  Prevent cascaded errors.

2020-06-12  Ed Schonberg  <schonberg@adacore.com>

        * sem_ch12.adb (Find_Matching_Actual): Add guard on search loops
        to detect a compilation error when using a compiler built
        without assertions.
        (Instantiate_Formal_Subprogram): Create a new subprogram name
        for the actual only if formal has contract aspects and expansion
        is enabled.

2020-06-12  Eric Botcazou  <ebotcazou@adacore.com>

        * exp_aggr.adb: Add with and use clauses for Sem_Mech.
        (Get_Base_Object): New function to get the base object of a node.
        (In_Place_Assign_OK): Add Target_Object parameter.  Deal with a
        qualified expression on entry.  Remove short-circuit for array
        aggregates with a single "others" choice.  Do not look into the
        components of the aggregate if the parent is an allocator.
        (Check_Component): Add T_OK parameter and rewrite.
        (Safe_Component): Invoke Check_Component with T_OK set to False.
        (Convert_To_Assignments): Try to use an in-place assignment for
        any target; for that, call Get_Base_Object on the target and pass
        the result to In_Place_Assign_OK.
        (Expand_Array_Aggregate): Use Parent_Kind and Parent_Node more
        consistently.  For an assignment, call Get_Base_Object on the
        target and pass the result to In_Place_Assign_OK.

2020-06-12  Dmitriy Anisimkov  <anisimko@adacore.com>

        * socket.c (__gnat_minus_500ms): Use GetVersionEx to detect
        Windows Server version.
        * libgnat/g-sothco.ads (Minus_500ms_Windows_Timeout): Remade to
        Boolean constant.
        * libgnat/g-socket.adb (Set_Socket_Option): Use
        Minus_500ms_Windows_Timeout constant instead of function call.

2020-06-12  Arnaud Charlet  <charlet@adacore.com>

        * libgnat/a-coinho.ads, libgnat/a-coinho.adb,
        libgnat/a-coinho__shared.ads, libgnat/a-coinho__shared.adb
        (Swap): New procedure.

2020-06-12  Arnaud Charlet  <charlet@adacore.com>

        * exp_ch6.adb (Expand_N_Subprogram_Declaration): Do nothing for
        a subprogram declared in a protected body.
        * exp_ch9.ads, exp_ch9.adb
        (Build_Private_Protected_Declaration): Moved to sem_ch6.adb.
        (Expand_N_Protected_Body): Do nothing for a subprogram declared
        in a protected body.
        * sem_ch6.adb (Build_Internal_Protected_Declaration): Moved from
        exp_ch9.adb and renamed and fixed to ensure in particular that
        such subprograms have convention Intrinsic and have no protected
        version.
        (Analyze_Subprogram_Body_Helper): Call
        Build_Internal_Protected_Declaration.
        (Move_Pragmas): Moved up and merged with the more general
        version from Build_Private_Protected_Declaration. We only want
        to copy selected pragmas, most pragmas are not suitable for a
        copy on the spec.

2020-06-12  Ed Schonberg  <schonberg@adacore.com>

        * sem_ch6.adb (Check_Overriding_Indicatior): Reject an
        overriding indicator on a subprogram declared within a protected
        body.

2020-06-12  Piotr Trojanek  <trojanek@adacore.com>

        * contracts.adb, einfo.adb, sem_ch4.adb, sem_ch6.adb,
        sem_res.adb, sem_util.adb: Replace Ekind_In with Is_Entry.

2020-06-12  Piotr Trojanek  <trojanek@adacore.com>

        * sem_res.adb (Resolve_Entry_Call): Add call to
        Warn_On_Overlapping_Actuals.

2020-06-12  Arnaud Charlet  <charlet@adacore.com>

        * aspects.ads (Is_Representation_Aspect): New array.
        * sem_ch13.adb (Analyze_Aspect_Specifications): Check
        13.1(9.2/5) for representation aspects.

2020-06-12  Bob Duff  <duff@adacore.com>

        * exp_put_image.ads, exp_put_image.adb (Preload_Sink): Procedure
        for preloading type Sink.  This has the side effect of loading
        various dependents, including Ada.Strings.UTF_Encoding.
        (Enable_Put_Image): Disable Put_Image in pre-2020 versions of
        Ada.  This limitation can probably be lifted later.  Enable for
        tagged types except in predefined units.  Disable for CPP types;
        Put_Image is legal, just prints the type name.
        * sem_attr.adb (Check_Put_Image_Attribute): Don't complain about
        Put_Image of CPP types; instead call the "unknown" version of
        Put_Image.
        * sem_ch10.adb (Analyze_Compilation_Unit): Call Preload_Sink.

2020-06-12  Piotr Trojanek  <trojanek@adacore.com>

        * sem_warn.adb (Warn_On_Overlapping_Actuals): Simplify.

2020-06-12  Piotr Trojanek  <trojanek@adacore.com>

        * sem_warn.adb (Warn_On_Overlapping_Actuals): Remove suppression
        for internal units.

2020-06-12  Arnaud Charlet  <charlet@adacore.com>

        * exp_strm.adb (Build_Elementary_Input_Call): Add support for 24
        bits elementary types.
        * rtsfind.ads: Add 24 bits integer streaming routines.
        * sem_ch13.adb (Analyze_Attribute_Definition_Clause
        [Attribute_Stream_Size]): Add support for 24 bits elementary
        types.
        * libgnat/s-stratt.ads, libgnat/s-stratt.adb,
        libgnat/s-stratt__xdr.adb: Add support for signed and unsigned
        24 bits integers.

2020-06-12  Piotr Trojanek  <trojanek@adacore.com>

        * sem_ch3.adb (Get_Discr_Value): Cleanup.

2020-06-12  Eric Botcazou  <ebotcazou@adacore.com>

        * rtsfind.ads (RTU_Id): Add System_Address_To_Access_Conversions.
        * sem_elab.adb (Elaboration_Phase_Active): Alphabetize.
        (Finalize_All_Data_Structures): Likewise.
        (Error_Preelaborated_Call): New procedure.
        (Build_Call_Marker): Set Is_Preelaborable_Call flag in marker.
        (Build_Access_Marker): Likewise.
        (Build_Subprogram_Invocation): Likewise.
        (Build_Task_Activation): Likewise.
        (Check_Preelaborated_Call): Return when the call is preelaborable.
        Call Error_Preelaborated_Call to give the error otherwise.
        (Check_Elab_Call): Likewise.
        * sem_util.adb (Is_Preelaborable_Function): New predicate.
        (Is_Non_Preelaborable_Construct.Visit): Recurse on the
        Explicit_Actual_Parameter field of N_Parameter_Association.
        (Is_Non_Preelaborable_Construct.Visit_Subexpression): In Ada 2020,
        for a call to a preelaborable function, visit the parameter list;
        otherwise, raise Non_Preelaborable exception.
        (Is_Preelaborable_Construct): Likewise, but recursively check the
        parameters instead and return false upon failure, otherwise true.
        * sinfo.ads (Is_Preelaborable_Call): New flag in call marker nodes.
        (Is_Preelaborable_Call): New inline function.
        (Set_Is_Preelaborable_Call): New inline procedure.
        * sinfo.adb (Is_Preelaborable_Call): New inline function.
        (Set_Is_Preelaborable_Call): New inline procedure.

2020-06-12  Bob Duff  <duff@adacore.com>

        * stringt.ads: Remove "use System;".

2020-06-12  Eric Botcazou  <ebotcazou@adacore.com>

        * sem_ch4.adb (Try_Container_Indexing): Replace call to
        First_Discriminant by Get_Reference_Discriminant to get the
        reference discriminant.
        * sem_ch13.adb (Check_Indexing_Functions): Likewise.
        * sem_ch5.adb (Preanalyze_Range): Call Get_Reference_Discriminant
        to get the reference discriminant.
        * sem_util.adb (Is_OK_Variable_For_Out_Formal): Treat all
        Ada 2012 implicit dereferences in only one place.
        (Is_Variable): Minor tweak.

2020-06-12  Ed Schonberg  <schonberg@adacore.com>

        * sem_ch12.adb (Has_Contracts): New predicate to check whether a
        formal subprogram carries an aspect specification for a pre- or
        postcondition.
        (Build_Subprogram_Wrappers): If actual is overloaded, create a
        new name to be used in call inside wrapper body. This names
        carries the interpretations of the actual, and is resolved when
        the body is analyzed.
        (Build_Subprogram_Body_Wrapper): Use this generated name in
        call.
        (Build_Subprogram_Decl_Wrapper): Build profile of wrapper from
        the profile of formal, and reset type entities for subsequent
        analysis.

2020-06-12  Bob Duff  <duff@adacore.com>

        * debug.adb: Remove usage of -gnatd_z.
        * exp_attr.adb, exp_put_image.ads, exp_put_image.adb: Clean up
        the enable/disable code. If Put_Image is disabled for a type,
        systematically call the "unknown" version.  Improve comments.
        Consolidate workarounds.  Remove usage of -gnatd_z.

2020-06-12  Eric Botcazou  <ebotcazou@adacore.com>

        * sem_elab.adb: Fix typos in comments.

2020-06-12  Justin Squirek  <squirek@adacore.com>

        * sem_util.adb (Object_Access_Level): Add processing of implicit
        dereferences.

2020-06-12  Bob Duff  <duff@adacore.com>

        * libgnat/a-nbnbin.adb, libgnat/a-nbnbin.ads,
        libgnat/a-nbnbin__gmp.adb, libgnat/a-nbnbre.adb,
        libgnat/a-nbnbre.ads: Update Put_Image, and uncomment the aspect
        specification.  Add pragmas Ada_2020.
        * libgnat/a-stouut.ads, libgnat/a-stteou.ads: Add Preelaborate,
        because the Big_Numbers packages have Preelaborate, and now
        depend on these Text_Output packages.

2020-06-12  Eric Botcazou  <ebotcazou@adacore.com>

        * einfo.ads (No_Return): Document it for all subprograms.
        * einfo.adb (Set_No_Return): Adjust assertion accordingly.
        * sem_ch3.adb (Check_Abstract_Overriding): Implement the
        check prescribed by RM 6.5.1(6/2) here instead of...
        (Derive_Subprogram): Adjust comment accordingly.
        * sem_disp.adb (Override_Dispatching_Operation): ...here.
        Remove superfluous return statement.
        * sem_ch6.adb (Check_No_Return_Expression): New procedure.
        (Analyze_Function_Return): Call it to implement the check
        prescribed by AI12-0269 for simple return statements of
        No_Return functions, and also checks extended statements.
        (Analyze_Return_Statement): Only give an error on a return
        statement in No_Return procedures.  Use idiomatic form.
        * sem_ch8.adb (Analyze_Subprogram_Renaming): Adjust error
        message for No_Return renaming subprogram.
        * sem_prag.adb (Analyze_Pragma) <Pragma_No_Return>: Accept
        it on functions and generic functions in Ada 2020.

2020-06-11  Eric Botcazou  <ebotcazou@adacore.com>

        * sem_res.adb (Resolve_Implicit_Dereference): In an instance,
        reset the type of the prefix if it is private before building
        the dereference.

2020-06-11  Eric Botcazou  <ebotcazou@adacore.com>

        * exp_util.adb (Safe_Unchecked_Type_Conversion): Add missing
        Is_Type guard before calling Has_Discriminants on Etype.

2020-06-11  Bob Duff  <duff@adacore.com>

        * libgnat/a-nbnbin__gmp.adb: There's no Optional_Big_Integer
        anymore.  Invalid_Big_Integer is not used.
        Greatest_Common_Divisor returns Big_Positive.

2020-06-11  Piotr Trojanek  <trojanek@adacore.com>

        * sem_aggr.adb (Get_Value): Refine type of the Compon parameter.

2020-06-11  Piotr Trojanek  <trojanek@adacore.com>

        * sem_aggr.adb (Resolve_Record_Aggregate): Refine type of
        Others_Box.

2020-06-11  Piotr Trojanek  <trojanek@adacore.com>

        * checks.adb, exp_ch7.adb, exp_ch9.adb, exp_smem.adb, lib.adb,
        nlists.adb, sem.adb, sem_aggr.adb, sem_ch3.adb, sem_ch6.adb,
        sem_ch8.adb, sem_dim.adb, sem_res.adb, sem_util.adb,
        sem_warn.adb: Replace uses of Next function with procedure.

2020-06-11  Eric Botcazou  <ebotcazou@adacore.com>

        * exp_pakd.ads: Add paragraph about scalar storage order.
        * exp_pakd.adb (Install_PAT): Do not set the scalar storage
        order of the PAT here but...
        (Set_PB_Type): ...here instead and...
        (Create_Packed_Array_Impl_Type): ...here as well.
        * rtsfind.ads (RE_Id): Add RE_Rev_Packed_Bytes{1,2,4}.
        (RE_Unit_Table): Likewise.
        * libgnat/s-unstyp.ads (Rev_Packed_Bytes1): New derived type.
        (Rev_Packed_Bytes2): Likewise.
        (Rev_Packed_Bytes4): Likewise.

2020-06-11  Piotr Trojanek  <trojanek@adacore.com>

        * sem_ch4.adb, sem_ch6.adb, sem_res.adb, sem_util.ads: Fix
        references to SPARK RM 7.1.3 rule numbers.

2020-06-11  Ed Schonberg  <schonberg@adacore.com>

        * sem_warn.adb (Warn_On_Overlapping_Actuals): Simplify code,
        remove inner predicate Is_Covered_Formal, preserve warning for
        two overlapping composite types when only one is writable, and
        for two overlapping and writable elementary types.

2020-06-11  Steve Baird  <baird@adacore.com>

        * contracts.adb (Add_Contract_Item): Support specifying
        volatility refinement aspects for types.
        (Analyze_Contracts): Add call to Analyze_Type_Contract in the
        case of a contract for a type.
        (Freeze_Contracts): Add call to Analyze_Type_Contract in the
        case of a contract for a type.
        (Check_Type_Or_Object_External_Properties): A new procedure
        which performs the work that needs to be done for both object
        declarations and types.
        (Analyze_Object_Contract): Add a call to
        Check_Type_Or_Object_External_Properties and remove the code in
        this procedure which did much of the work that is now performed
        by that call.
        (Analyze_Type_Contract): Implement this new routine as nothing
        more than a call to Check_Type_Or_Object_External_Properties.
        * contracts.ads: Update comment for Add_Contract_To_Item because
        types can have contracts.  Follow (questionable) precedent and
        declare new routine Analyze_Type_Contract as visible (following
        example of Analyze_Object_Contract), despite the fact that it is
        never called from outside of the package where it is declared.
        * einfo.adb (Contract, Set_Contract): Id argument can be a type;
        support this case.
        (Write_Field34_Name): Field name is "contract" for a type.
        * einfo.ads: Update comment describing Contract attribute.
        * sem_ch3.adb (Build_Derived_Numeric_Type): Is_Volatile should
        return same answer for all subtypes of a given type. Thus, when
        building the base type for something like type Volatile_1_To_10
        is range 1 .. 10 with Volatile; that basetype should be marked
        as being volatile.
        (Access_Type_Declaration): Add SPARK-specific legality check
        that the designated type of an access type shall be compatible
        with respect to volatility with the access type.
        * sem_ch12.adb (Check_Shared_Variable_Control_Aspects): Add
        SPARK-specific legality check that an actual type parameter in
        an instantiation shall be compatible with respect to volatility
        with the corresponding formal type.
        * sem_ch13.adb (Analyze_Aspect_Specifications): Perform checks
        for aspect specs for the 4 volatility refinement aspects that
        were already being performed for all language-defined aspects.
        * sem_prag.adb (Analyze_External_Property_In_Decl_Part,
        Analyze_Pragma): External properties (other than No_Caching) may
        be specified for a type, including a generic formal type.
        * sem_util.ads: Declare new subprograms - Async_Readers_Enabled,
        Async_Writers_Enabled, Effective_Reads, Effective_Writes, and
        Check_Volatility_Compatibility.
        * sem_util.adb (Async_Readers_Enabled, Async_Writers_Enabled,
        Effective_Reads, Effective_Writes): Initial implementation of
        new functions for querying aspect values.
        (Check_Volatility_Compatibility): New procedure intended for use
        in checking all SPARK legality rules of the form "<> shall be
        compatible with respect to volatility with <>".
        (Has_Enabled_Property): Update comment because Item_Id can be a
        type.  Change name of nested Variable_Has_Enabled_Property
        function to Type_Or_Variable_Has_Enabled_Property; add a
        parameter to that function because recursion may be needed,
        e.g., in the case of a derived typ).  Cope with the case where
        the argument to Has_Enabled_Property is a type.

2020-06-11  Piotr Trojanek  <trojanek@adacore.com>

        * sem_aggr.adb (Add_Association): Add assertion about the formal
        parameters.
        (Propagate_Discriminants): Always add an explicit component
        association, so that an "others => <>" association is never
        needed.

2020-06-11  Bob Duff  <duff@adacore.com>

        * exp_put_image.adb (Build_Elementary_Put_Image_Call): If the
        underlying type is real, call Put_Image_Unknown.
        (Build_Unknown_Put_Image_Call): Pass the type name to
        Put_Image_Unknown.
        * libgnat/s-putima.ads, libgnat/s-putima.adb
        (Put_Image_Unknown): Add Type_Name parameter.  Remove
        overly-detailed documentation of what it does; better to leave
        it open.

2020-06-11  Piotr Trojanek  <trojanek@adacore.com>

        * sem_ch3.adb (Build_Constrained_Array_Type,
        Build_Constrained_Discriminated_Type): Skip unnecessary loop
        iterations.

2020-06-11  Piotr Trojanek  <trojanek@adacore.com>

        * sem_aggr.adb (Build_Constrained_Itype): Move to Sem_Util.
        * sem_ch3.adb (Build_Subtype, Inherit_Predicate_Flags): Move...
        * sem_util.adb (Build_Subtype): Here.  Add parameters for
        references to objects previously declared in enclosing scopes.
        (Inherit_Predicate_Flags): And here, because it is called by
        Build_Subtype.
        * sem_util.ads (Build_Overriding_Spec): Reorder alphabetically.
        (Build_Subtype): Moved from Sem_Ch3; comments updated.
        (Build_Constrained_Itype): Moved from Sem_Aggr; comments
        updated.

2020-06-11  Piotr Trojanek  <trojanek@adacore.com>

        * sem_aggr.adb (Case_Table_Type): Change index type from Nat to
        Pos.

2020-06-11  Piotr Trojanek  <trojanek@adacore.com>

        * sem_aggr.adb (Build_Constrained_Itype): Previously a declare
        block, now a separate procedure; the only change is that now
        New_Assoc_List might include components and an others clause,
        which we ignore (while we deal with discriminants exactly as we
        did before); extend a ??? comment about how this routine is
        different from the Build_Subtype
        (Resolve_Record_Aggregate): Create a constrained itype not just
        for the outermost record aggregate, but for its inner record
        aggregates as well.

2020-06-11  Eric Botcazou  <ebotcazou@adacore.com>

        * checks.adb (Build_Discriminant_Checks): Build an explicit
        dereference when the type is an access type.
        * exp_atag.adb (Build_CW_Membership): Add explicit dereferences.
        (Build_Get_Access_Level): Likewise.
        (Build_Get_Alignment): Likewise.
        (Build_Inherit_Prims): Likewise.
        (Build_Get_Transportable): Likewise.
        (Build_Set_Size_Function): Likewise.
        * exp_ch3.adb (Build_Offset_To_Top_Function): Likewise.
        * exp_ch4.adb (Expand_Allocator_Expression): Likewise.
        (Expand_N_Indexed_Component ): Remove code dealing with implicit
        dereferences.
        (Expand_N_Selected_Component): Likewise.
        (Expand_N_Slice): Likewise.
        * exp_ch9.adb (Add_Formal_Renamings): Add explicit dereference.
        (Expand_Accept_Declarations): Likewise.
        (Build_Simple_Entry_Call): Remove code dealing with implicit
        dereferences.
        (Expand_N_Requeue_Statement): Likewise.
        * exp_disp.adb (Expand_Dispatching_Call): Build an explicit
        dereference when the controlling type is an access type.
        * exp_spark.adb (Expand_SPARK_N_Selected_Component): Delete.
        (Expand_SPARK_N_Slice_Or_Indexed_Component): Likewise.
        (Expand_SPARK): Do not call them.
        * sem_ch4.adb (Process_Implicit_Dereference_Prefix): Delete.
        (Process_Indexed_Component): Call Implicitly_Designated_Type
        to get the designated type for an implicit dereference.
        (Analyze_Overloaded_Selected_Component): Do not insert an
        explicit dereference here.
        (Analyze_Selected_Component): Likewise.
        (Analyze_Slice): Call Implicitly_Designated_Type to get the
        designated type for an implicit dereference.
        * sem_ch8.adb (Has_Components): New predicate extracted from...
        (Is_Appropriate_For_Record): ...this.  Delete.
        (Is_Appropriate_For_Entry_Prefix): Likewise.
        (Analyze_Renamed_Entry): Deal with implicit dereferences.
        (Find_Selected_Component): Do not insert an explicit dereference
        here.  Call Implicitly_Designated_Type to get the designated type
        for an implicit dereference.  Call Has_Components, Is_Task_Type
        and Is_Protected_Type directly.  Adjust test for error.
        * sem_res.adb (Resolve_Implicit_Dereference): New procedure.
        (Resolve_Call): Call Resolve_Indexed_Component last.
        (Resolve_Entry): Call Resolve_Implicit_Dereference on the prefix.
        (Resolve_Indexed_Component): Call Implicitly_Designated_Type to
        get the designated type for an implicit dereference and
        Resolve_Implicit_Dereference on the prefix at the end.
        (Resolve_Selected_Component): Likewise.
        (Resolve_Slice): Likewise.  Do not apply access checks here.
        * sem_util.ads (Implicitly_Designated_Type): Declare.
        * sem_util.adb (Copy_And_Maybe_Dereference): Simplify.
        (Implicitly_Designated_Type): New function.
        (Object_Access_Level): Fix typo.
        * sem_warn.adb (Check_Unset_Reference): Test Comes_From_Source
        on the original node.

2020-06-11  Piotr Trojanek  <trojanek@adacore.com>

        * exp_disp.adb: Minor reformatting.
        * exp_aggr.adb (Is_Static_Dispatch_Table_Aggregate): Recognize
        aggregates of the Ada.Tags.Object_Specific_Data type as static.
        * sem_aggr.adb (Check_Static_Discriminated_Subtype): Deconstruct
        and do not call it from Build_Constrained_Itype.

2020-06-11  Piotr Trojanek  <trojanek@adacore.com>

        * exp_disp.adb (Make_Secondary_DT): Internally generated OSD
        tables are now constant.

2020-06-11  Piotr Trojanek  <trojanek@adacore.com>

        * exp_aggr.adb (Backend_Processing_Possible): Remove useless
        call.

2020-06-11  Piotr Trojanek  <trojanek@adacore.com>

        * opt.ads (Building_Static_Dispatch_Tables): Fix punctuation in
        comment.

2020-06-11  Arnaud Charlet  <charlet@adacore.com>

        * libgnat/s-stposu.ads (Root_Storage_Pool_With_Subpools,
        Root_Subpool): Mark with Preelaborable_Initialization.

2020-06-11  Javier Miranda  <miranda@adacore.com>

        * exp_ch9.adb (Expand_N_Conditional_Entry_Call): Replace call to
        New_Copy_List by calls to the new routine
        New_Copy_Separate_List.
        * sem_util.ads (New_Copy_Separate_List, New_Copy_Separate_Tree):
        New routines.
        * sem_util.adb (New_Copy_Separate_List, New_Copy_Separate_Tree):
        New routines.
        (New_Copy_Tree): Extend the machinery that detects syntactic
        nodes to handle lists of indentifiers with field More_Ids;
        otherwise such nodes are erroneously handled as semantic nodes.
        Copy aspect specifications attached to nodes.
        * sem_ch12.adb (Copy_Generic_Node): Protect reading attribute
        Etype.

2020-06-11  Bob Duff  <duff@adacore.com>

        * sem_ch13.adb (Analyze_Aspect_Specifications): Do not set the
        Has_Predicates flag when the Predicate_Failure aspect is seen.
        It is legal (but pointless) to use this aspect without a
        predicate.  If we set the flag, we generate a half-baked
        Predicate procedure, and if that procedure is nested, it causes
        unnesting to crash.

2020-06-11  Bob Duff  <duff@adacore.com>

        * exp_put_image.adb (Build_Record_Put_Image_Procedure): Remove
        special processing of protected types, because those are handled
        by Build_Protected_Put_Image_Call.
        (Enable_Put_Image): Use the switch -gnatd_z to control enabling
        of Put_Image. Disable Put_Image for types in Remote_Types
        packages.
        * debug.adb: Document -gnatd_z switch.
        * exp_imgv.adb, libgnat/a-stteou.ads, opt.ads: Minor cleanups.

2020-06-11  Piotr Trojanek  <trojanek@adacore.com>

        * sem_warn.adb (Warn_On_Overlapping_Actuals): Add label to the
        outer loop and use it in the exit statement.

2020-06-11  Ghjuvan Lacambre  <lacambre@adacore.com>

        * exp_ch3.adb (Build_Assignment): Generate predicate check if
        subtype mark has predicate.

2020-06-11  Justin Squirek  <squirek@adacore.com>

        * sem_util.adb (Expand_N_Attribute_Reference): Use original
        nodes where required to avoid looking at the expanded tree.

2020-06-11  Arnaud Charlet  <charlet@adacore.com>

        * libgnat/a-catizo.ads, libgnat/a-nbnbin.ads,
        libgnat/a-nbnbre.ads, libgnat/a-nubinu.ads,
        libgnat/s-aoinar.ads, libgnat/s-aomoar.ads,
        libgnat/s-aotase.ads, libgnat/s-stopoo.ads: Remove aspects that
        we will not implement.

2020-06-11  Arnaud Charlet  <charlet@adacore.com>

        * libgnat/s-aoinar.adb (Atomic_Fetch_And_Add,
        Atomic_Fetch_And_Subtract): Add fallback using
        compare-and-exchange, in case the integer type does not map to a
        machine type.

2020-06-10  Arnaud Charlet  <charlet@adacore.com>

        * libgnat/s-aomoar.ads, libgnat/s-aomoar.adb: New files.
        * libgnat/s-atopar.ads: Move...
        * libgnat/s-aoinar.ads: Here.
        * libgnat/s-atopar.adb: Move...
        * libgnat/s-aoinar.adb: Here.
        * impunit.adb: Update list of runtime files.
        * Makefile.rtl (GNATRTL_NONTASKING_OBJS=): Adjust.

2020-06-10  Arnaud Charlet  <charlet@adacore.com>

        * snames.ads-tmpl (Name_Characters_Assertion_Check,
        Name_Containers_Assertion_Check,
        Name_Interfaces_Assertion_Check, Name_IO_Assertion_Check,
        Name_Numerics_Assertion_Check, Name_Strings_Assertion_Check,
        Name_System_Assertion_Check): New constants.
        * types.ads (Characters_Assertion_Check,
        Containers_Assertion_Check, Interfaces_Assertion_Check,
        IO_Assertion_Check, Numerics_Assertion_Check,
        Strings_Assertion_Check, System_Assertion_Check): New constants.
        (All_Checks): Update accordingly.

2020-06-10  Ghjuvan Lacambre  <lacambre@adacore.com>

        * exp_ch3.adb (Build_Equivalent_Record_Aggregate): Return Empty
        if Etype of record component has predicates.

2020-06-10  Arnaud Charlet  <charlet@adacore.com>

        * exp_ch3.adb (Build_Init_Statements): Implement the notion of
        "require late initialization".

2020-06-10  Eric Botcazou  <ebotcazou@adacore.com>

        * sem_util.adb (Copy_And_Maybe_Dereference): Temporarily copy
        the parent node of the original tree when dereferencing.

2020-06-10  Ed Schonberg  <schonberg@adacore.com>

        * sem_warn.adb (Warn_On_Overlapping_Actuals): Add a warning when
        two actuals in a call overlap, both are composite types that may
        be passed by reference, and only one of them is writable.

2020-06-10  Eric Botcazou  <ebotcazou@adacore.com>

        * exp_ch4.adb (Expand_N_In): Use an expression with actions to
        insert the PE raise statement for the Unchecked_Union case.

2020-06-10  Eric Botcazou  <ebotcazou@adacore.com>

        * sem_ch4.adb (Analyze_Call): Use idiomatic condition.
        * sem_res.adb (Resolve_Call): Remove obsolete code.

2020-06-10  Eric Botcazou  <ebotcazou@adacore.com>

        * sem_util.adb (Copy_And_Maybe_Dereference): New function.
        (Build_Access_Record_Constraint): Use it to copy the prefix.
        (Build_Actual_Array_Constraint): Likewise.
        (Build_Actual_Record_Constraint): Likewise.

2020-06-10  Bob Duff  <duff@adacore.com>

        * sem_prag.adb (Invariant): Remove the pragma removing code.  It
        doesn't work to remove the pragma, because various flags are set
        during Build_Invariant_Procedure_Declaration and
        Build_Invariant_Procedure_Body that need to be set to avoid the
        spurious warnings.
        * exp_util.adb (Make_Invariant_Call): Avoid calling the
        invariant-checking procedure if the body is empty. This is an
        optimization.

2020-06-10  Vasiliy Fofanov  <fofanov@adacore.com>

        * doc/gnat_ugn/gnat_utility_programs.rst: Fix gnatmetric
        switches description.

2020-06-10  Arnaud Charlet  <charlet@adacore.com>

        * repinfo-input.ads, repinfo-input.adb, repinfo.adb,
        repinfo.ads: Update header.

2020-06-10  Eric Botcazou  <ebotcazou@adacore.com>

        * exp_aggr.adb (In_Place_Assign_OK): Do not necessarily return
        false for a type with discriminants.
        (Convert_To_Assignments): Use Parent_Node and Parent_Kind more
        consistently.  In the in-place assignment case, first apply a
        discriminant check if need be, and be prepared for a rewritten
        aggregate as a result.

2020-06-10  Arnaud Charlet  <charlet@adacore.com>

        * atree.adb, contracts.adb, debug.adb, freeze.adb,
        repinfo-input.adb, repinfo.adb, sem_attr.adb, sem_ch10.adb,
        sem_ch13.adb, sem_ch3.adb, sem_ch5.adb, sem_ch6.adb,
        sem_ch8.adb, sem_ch9.adb, sem_disp.adb, sem_eval.adb,
        sem_prag.adb: Remove more references to ASIS.

2020-06-10  Arnaud Charlet  <charlet@adacore.com>

        * libgnat/s-secsta.adb (Round_Up): Fix typo in exception
        message.

2020-06-10  Piotr Trojanek  <trojanek@adacore.com>

        * par-ch4.adb (P_Membership_Test): Fix typo in a grammar rule.

2020-06-10  Piotr Trojanek  <trojanek@adacore.com>

        * exp_spark.adb (Expand_SPARK_N_Attribute_Reference): Remove
        expansion of First and Last attributes.

2020-06-10  Piotr Trojanek  <trojanek@adacore.com>

        * exp_attr.adb (Expand_N_Attribute_Reference): Remove folding
        for Enum_Rep attribute.
        * exp_spark.adb (Expand_SPARK_N_Attribute_Reference): Remove
        duplicated code for folding Enum_Rep attribute.
        * sem_attr.adb (Eval_Attribute): Relax condition for folding
        Enum_Rep attribute; previously dead code is now executed when
        the attribute prefix is an enumeration literal; refine type in
        processing of Enum_Val.

2020-06-10  Javier Miranda  <miranda@adacore.com>

        * sem_ch3.adb (Analyze_Declarations): Adjust the machinery that
        takes care of late body overriding of initialize, adjust,
        finalize.  Remove ASIS mode code.

2020-06-10  Ed Schonberg  <schonberg@adacore.com>

        * einfo.ads (Access_Subprogram_Wrapper): New attribute of
        Subprogram_Type entities. Denotes subprogram constructed for
        Access_To_Subprogram types that include pre- and postconditions.
        * einfo.adb: Subprogram bodies for Access_Subprogram_Wrapper.
        * exp_ch6.adb (Expand_Call): An indirect call through an
        Access_To_subprogram that includes contracts is rewritten as a
        call to the corresponding Access_ ubprogram_Wrapper. Handle
        derived types that inherit contract from parent.
        * sem_prag.adb (Build_Access_Subprogram_Wrapper): Build
        subprogram declaration for subprogram that incorporates the
        contracts of an Access_To_Subprogram type declaration. Build
        corresponding body and attach it to freeze actions for type.
        * sem_util.ads, sem_util.adb (Is_Access_Subprogram_Wrapper):
        Utility that uses signature of the subprogram to determine
        whether it is a generated wrapper for an Access_To_Subprogram
        type.

2020-06-10  Ghjuvan Lacambre  <lacambre@adacore.com>

        * par-ch6.adb (P_Subprogram): Make sure the specification
        belongs to a procedure.

2020-06-10  Piotr Trojanek  <trojanek@adacore.com>

        * sem_ch13.adb (All_Membership_Choices_Static): Assert an AST
        property documented in sinfo.ads and simplify an excessive
        condition.

2020-06-10  Piotr Trojanek  <trojanek@adacore.com>

        * exp_attr.adb (Expand_N_Attribute_Reference): Fix a copy-paste
        mistake in comment.
        * sem_res.adb (Flag_Effectively_Volatile_Objects): Fix a type in
        the SPARK RM rule number.
        * exp_ch4.adb, sem_util.adb: Fix style in single line comments.

2020-06-10  Piotr Trojanek  <trojanek@adacore.com>

        * sem_aux.ads, sem_aux.adb (Get_Low_Bound): Remove.

2020-06-10  Arnaud Charlet  <charlet@adacore.com>

        * scn.adb (Determine_License): Remove.

2020-06-10  Justin Squirek  <squirek@adacore.com>

        * exp_ch3.adb (Expand_N_Object_Declaration): Add condition to
        handle processing of objects initialized by a call to a function
        return an anonymous access type.
        * exp_ch6.adb, exp_ch6.ads
        (Has_Unconstrained_Access_Discriminants): Moved to sem_util.adb
        (Needs_Result_Accessibility_Level): Moved to sem_util.adb
        * sem_util.adb, sem_util.ads
        (Has_Unconstrained_Access_Discriminants): Moved from exp_ch6.adb
        (Needs_Result_Accessibility_Level): Moved from exp_ch6.adb
        * sem_res.adb (Valid_Conversion): Add condition for the special
        case where the operand of a conversion is the result of an
        anonymous access type

2020-06-10  Ghjuvan Lacambre  <lacambre@adacore.com>

        * par-ch6.adb (P_Subprogram): Reject duplicate subprogram
        declarations.

2020-06-10  Eric Botcazou  <ebotcazou@adacore.com>

        * exp_ch6.adb (Insert_Post_Call_Actions): Deal with the context
        of an if-expression and with a call written in prefixed notation.

2020-06-10  Gary Dismukes  <dismukes@adacore.com>

        * einfo.ads: Minor reformatting of a comment.
        * exp_aggr.adb: Minor reformatting and a grammar correction.
        * exp_attr.adb: Minor reformatting and a typo fix in some
        comments.
        * sem_ch12.adb: Fix three typos in comments.

2020-06-09  Javier Miranda  <miranda@adacore.com>

        * sem_ch6.adb (New_Overloaded_Entity): Add missing call to check
        subtype conformance of overriding dispatching primitive.
        * sem_eval.adb (Subtypes_Statically_Match): Handle derivations
        of private subtypes.
        * libgnat/g-exptty.adb, libgnat/g-exptty.ads
        (Set_Up_Communications): Fix the profile since null-exclusion is
        missing in the access type formals.
        * sem_disp.ads (Check_Operation_From_Private_View): Adding
        documentation.

2020-06-09  Eric Botcazou  <ebotcazou@adacore.com>

        * einfo.ads (XEINFO section): Update format description.
        (Is_Subprogram_Or_Entry): Move pragma to regular section.
        (Is_Subprogram_Or_Generic_Subprogram): Likewise.
        * xeinfo.adb (Get_B4): Rename to...
        (Get_B0): ...this.
        (Translate_Expr): New procedure extracted from...
        (XEinfo): ...here.  Try to apply Get_B0 first and then
        call Translate_Expr to translate supported constructs.

2020-06-09  Eric Botcazou  <ebotcazou@adacore.com>

        * exp_ch6.adb (Freeze_Subprogram): Deal with convention C_Family.
        * freeze.adb (Freeze_Profile): Likewise.  Add missing guard.
        * sem_mech.adb (Set_Mechanisms): Likewise.
        * lib-xref.adb (Output_Import_Export_Info): Ditto for C_Variadic.
        * repinfo.adb (List_Subprogram_Info): Likewise.
        * sem_prag.adb (Set_Convention_From_Pragma): Move main checks for
        Stdcall to...
        (Process_Convention): ...here.  Add checks for C_Variadic.
        * snames.ads-tmpl: Add Name_C_Variadic_0 .. Name_C_Variadic_16.
        Use consistent format for subtype declarations.
        (Convention_Id): Add Convention_C_Variadic_0 .. C_Variadic_16
        and move Convention_CPP up.
        (Convention_C_Family): New subtype of Convention_Id.
        (Convention_C_Variadic): Likewise.
        (Foreign_Convention): Use explicit upper bound.
        Add pragma Inline for Is_Configuration_Pragma_Name,
        Is_Function_Attribute_Name, Is_Internal_Attribute_Name
        and Is_Procedure_Attribute_Name.
        * snames.adb-tmpl (Get_Convention_Id): Deal with Name_Variadic_n.
        (Get_Convention_Name): Deal with Convention_Variadic_n.
        * types.h (Convention_Id): New typedef.
        * xsnamest.adb (Name2): New variable.
        (Is_Conv): New pattern.
        (Get_Subt1): Likewise.
        (Get_Subt2): Likewise.
        Output subtypes of Convention_Id into the C header file.

2020-06-09  Arnaud Charlet  <charlet@adacore.com>

        * exp_ch3.adb, exp_ch4.adb, exp_ch6.adb, exp_ch9.adb,
        exp_disp.adb, exp_util.adb: Add comments related to errors that
        should be moved to semantic analysis. Also replace "?" with "??"
        in warning messages.

2020-06-09  Arnaud Charlet  <charlet@adacore.com>

        * libgnat/a-strunb__shared.ads, libgnat/a-strunb__shared.adb
        (Reference, Unreference): No-op for Empty_Shared_String.
        Remove unneeded calls to Reference.

2020-06-09  Arnaud Charlet  <charlet@adacore.com>

        * exp_ch5.adb (Expand_N_Assignment): Remove kludge for
        AI05-0087.
        * sem_ch12.adb (Validate_Derived_Type_Instance): Implement
        AI05-0087 retroactively since it's a binding interpretation.

2020-06-09  Eric Botcazou  <ebotcazou@adacore.com>

        * einfo.ads (Has_Foreign_Convention): Fix description.
        (Component_Alignment): Move around.
        (Has_DIC): Likewise.
        (Has_Interrupt_Handler): Likewise.
        (Has_Invariants): Likewise.
        (Is_Atomic_Or_VFA): Likewise.
        (Next_Index): Likewise.
        (Scope_Depth): Likewise.
        (Init_Component_Size): Likewise.
        (Init_Component_Location): Likewise.
        (Init_Size): Likewise.
        (Inline Pragmas for functions): Add Corresponding_Function,
        Corresponding_Procedure, Entry_Max_Queue_Lengths_Array,
        Finalize_Storage_Only, Has_DIC, Has_Invariants,
        Initialization_Statements, Is_Anonymous_Access_Type,
        Next_Stored_Discriminant, Address_Clause, Alignment_Clause,
        Float_Rep, Has_Foreign_Convention, Has_Non_Limited_View,
        Is_Constant_Object, Is_Discriminal, Is_Finalizer, Is_Null_State,
        Is_Prival, Is_Protected_Component, Is_Protected_Record_Type,
        Is_Subprogram_Or_Entry, Is_Task_Record_Type, Size_Clause,
        Stream_Size_Clause, Type_High_Bound, Type_Low_Bound, Known_*,
        Unknown_*.
        (Inline Pragmas for procedures): Add Set_Corresponding_Function,
        Set_Corresponding_Procedure, Set_Finalize_Storage_Only,
        Set_Float_Rep, Set_Initialization_Statements,
        Init_Normalized_First_Bit, Init_Normalized_Position,
        Init_Normalized_Position_Max.
        * einfo.adb (Was_Hidden): Move around.
        (Is_Packed_Array): Likewise.
        (Model_Emin_Value): Likewise.
        (Model_Epsilon_Value): Likewise.
        (Model_Mantissa_Value): Likewise.
        (Model_Small_Value): Likewise.

2020-06-09  Ed Schonberg  <schonberg@adacore.com>

        * sem_ch12.adb (Check_Shared_Variable_Control_Aspects): Require
        exact match between formal and actual for aspects Atomic and
        Volatile only for formal derived types.

2020-06-09  Arnaud Charlet  <charlet@adacore.com>

        * exp_util.adb (Side_Effect_Free): Improve handling of
        N_Aggregate.

2020-06-09  Ghjuvan Lacambre  <lacambre@adacore.com>

        * sem_res.adb (Resolve_Qualified_Expression): Use Subtype_Mark
        type.

2020-06-09  Arnaud Charlet  <charlet@adacore.com>

        * exp_aggr.adb (Max_Aggregate_Size): New function to factorize
        code.
        (Convert_To_Positional, Aggr_Size_OK): Use Max_Aggregate_Size.

2020-06-09  Arnaud Charlet  <charlet@adacore.com>

        * sem_util.ads, sem_util.adb (Set_Debug_Info_Defining_Id): New.
        * exp_ch3.adb, exp_ch8.adb: Call Set_Debug_Info_Defining_Id when
        relevant.

2020-06-09  Justin Squirek  <squirek@adacore.com>

        * einfo.ads (Returns_By_Ref): Modify documentation to reflect
        that Returns_By_Ref can be applied to E_Subprogram_Type
        entities.

2020-06-09  Justin Squirek  <squirek@adacore.com>

        * exp_attr.adb (Expand_N_Attribute_Reference): Modify expansion
        of 'Overlaps_Storage to take into account zero sized arrays.

2020-06-09  Bob Duff  <duff@adacore.com>

        * bindo-graphs.adb, bindo-graphs.ads: For each invocation graph,
        record the corresponding library graph.
        * bindo-writers.adb (Write_Invocation_Graph_Vertex): Print the
        lib item name. Remove library graph parameters.
        * bindo-augmentors.adb, bindo-augmentors.ads,
        bindo-builders.adb, bindo-diagnostics.adb,
        bindo-diagnostics.ads, bindo-elaborators.adb: Remove library
        graph parameters.

2020-06-09  Eric Botcazou  <ebotcazou@adacore.com>

        * checks.adb (Apply_Predicate_Check): Extend trick used for
        aggregates to qualified aggregates and object declarations
        * einfo.ads (Has_Own_DIC): Mention the underlying full view.
        (Has_Own_Invariants): Likewise.
        (Has_Predicates): Likewise.
        * exp_util.adb (Build_DIC_Procedure_Declaration): Do not deal
        with base types explicitly but with underlying full views.
        (Build_Invariant_Procedure_Declaration): Likewise.
        * sem_ch13.adb (Build_Predicate_Functions): Do not deal with
        the full view manually but call Propagate_Predicate_Attributes
        to propagate attributes to views.
        (Build_Predicate_Function_Declaration): Likewise.
        * sem_ch3.adb (Build_Assertion_Bodies_For_Type): Build bodies
        for private full views with an underlying full view.
        (Build_Derived_Private_Type): Small comment tweak.
        (Complete_Private_Subtype): Call Propagate_Predicate_Attributes.
        (Process_Full_View): Do not deal with base types explicitly for
        DIC and Invariant attributes.  Deal with underlying full views
        for them.  Call Propagate_Predicate_Attributes and deal with
        underlying full views for them.
        * sem_ch7.adb (Preserve_Full_Attributes): Do not cross propagate
        DIC and Invariant attributes between full type and its base type.
        Propagate Predicate attributes from the full to the private view.
        * sem_ch9.adb (Analyze_Protected_Type_Declaration): Likewise.
        (Analyze_Task_Type_Declaration): Likewise.
        * sem_util.ads (Get_Views): Remove Full_Base parameter and add
        UFull_Typ parameter.
        (Propagate_Predicate_Attributes): New procedure.
        * sem_util.adb (Get_Views): Remove Full_Base parameter and add
        UFull_Typ parameter.  Retrieve the Corresponding_Record_Type
        from the underlying full view, if any.
        (Propagate_DIC_Attributes): Remove useless tests.
        (Propagate_Invariant_Attributes): Likewise.
        (Propagate_Predicate_Attributes): New procedure.

2020-06-09  Justin Squirek  <squirek@adacore.com>

        * exp_ch5.adb (Expand_Predicated_Loop): Perserve the original
        loop identifier within the expansion.

2020-06-09  Bob Duff  <duff@adacore.com>

        * bindo-graphs.ads (Library_Graph_Edge_Kind): Reorder enumerals
        to reflect the order of adding edges. Clarify comments.
        * bindo-graphs.adb (Add_Edge_Kind_Check): Correct the
        assertions.  Reorder the "when"s to match the order of adding
        edges, and therefore the order of enumerals in type
        Library_Graph_Edge_Kind.  Change names to "Old_" and "New_" to
        clarify what's what.  Combine Invocation_Edge into the "<="
        test.  Fix the "raise Program_Error" message, which was
        backwards.

2020-06-09  Bob Duff  <duff@adacore.com>

        * bindo-graphs.adb (Add_Edge_Kind_Check): Add the Image of the
        old and new Kinds to the raise Program_Error message.

2020-06-09  Eric Botcazou  <ebotcazou@adacore.com>

        * sem_ch3.adb (Is_Visible_Component): Do not special-case
        bodies of instances.

2020-06-09  Arnaud Charlet  <charlet@adacore.com>

        * exp_ch4.adb (Expand_N_In): Fix handling of null exclusion.

2020-06-09  Ed Schonberg  <schonberg@adacore.com>

        * sem_ch12.adb (Check_Shared_Variable_Control_Aspects): Require
        exact match between formal and actual for aspects Atomic,
        Atomic_Component, Volatile, and Volatile_Components.

2020-06-09  Bob Duff  <duff@adacore.com>

        * doc/gnat_ugn/gnat_utility_programs.rst: Add documentation for
        the --no-separate-return switch of gnatpp.

2020-06-09  Arnaud Charlet  <charlet@adacore.com>

        * sem_warn.adb (Warn_On_Constant_Valid_Condition): Add proper
        warning tag.

2020-06-09  Arnaud Charlet  <charlet@adacore.com>

        * sem_type.adb (Covers): Fix implementation of AI05-0149.
        * sem_res.adb: Fix typo.

2020-06-09  Ed Schonberg  <schonberg@adacore.com>

        * exp_ch9.adb (Build_Master_Renaming): Make name in renaming
        declaration unique by adding a numeric suffix, to prevent
        accidental name conflict when several instantiations of a
        package containing an access_to_incomplete type that designate
        tasks appear in the same scope.

2020-06-09  Piotr Trojanek  <trojanek@adacore.com>

        * libgnarl/a-synbar.ads, libgnarl/a-synbar.adb,
        libgnarl/a-synbar__posix.ads, libgnarl/a-synbar__posix.adb
        (Ada.Synchronous_Barriers): Annotate with SPARK_Mode => Off.

2020-06-09  Arnaud Charlet  <charlet@adacore.com>

        * sem_eval.adb (Eval_Relational_Op, Eval_String_Literal,
        Eval_Type_Conversion): Relax rules on relational operators and
        type conversions of static string types.

2020-06-09  Arnaud Charlet  <charlet@adacore.com>

        * sem_util.ads, sem_util.adb (Is_Partially_Initialized_Type):
        Take Default_Value and Default_Component_Value into account.
        * sem_ch3.adb (Analyze_Object_Declaration): Update comment.

2020-06-09  Bob Duff  <duff@adacore.com>

        * bindo-graphs.adb (Add_Edge_Kind_Check): Disable failing part
        of the assertion.

2020-06-08  Steve Baird  <baird@adacore.com>

        * sem_prag.adb (Analyze_Pragma.Set_Ravenscar_Profile): Add
        appropriate call to Set_Restriction_No_Dependence if Ada_Version
        >= Ada2012 and Profile is either Ravenscar or a GNAT-defined
        Ravenscar variant (i.e., not Jorvik).

2020-06-08  Arnaud Charlet  <charlet@adacore.com>

        * sem_ch5.adb: Fix typo.
        * sem_ch8.adb (Analyze_Renamed_Primitive_Operation): Check that
        the prefix of a prefixed view must be renamable as an object.

2020-06-08  Arnaud Charlet  <charlet@adacore.com>

        * sem_cat.ads: Fix typo.
        * sem_cat.adb (Validate_Remote_Access_To_Class_Wide_Type): Add
        handling of N_Attribute_Definition_Clause.
        * sem_ch13.adb (Analyze_Attribute_Definition_Clause): Call
        Validate_Remote_Access_To_Class_Wide_Type for Storage_Size and
        Storage_Pool.
        * sem_attr.adb, exp_ch4.adb: Update comments.

2020-06-08  Justin Squirek  <squirek@adacore.com>

        * sem_ch4.adb (Analyze_One_Call): Add extra condition to the
        predicate for deciding when a given controlled call is visible.

2020-06-08  Piotr Trojanek  <trojanek@adacore.com>

        * exp_spark.adb (Expand_SPARK_N_Attribute_Reference): Port
        changes in frontend expander.

2020-06-08  Piotr Trojanek  <trojanek@adacore.com>

        * sem_ch13.adb (All_Membership_Choices_Static): Fix style.

2020-06-08  Steve Baird  <baird@adacore.com>

        * libgnat/s-rident.ads: Add Jorvik to the Profile_Name
        enumeration type.  Add an element for Jorvik to the array
        aggregate that is the initial value of the constant
        Profile_Info.
        * targparm.adb (Get_Target_Parameters): Handle "pragma Profile
        (Jorvik);" similarly to "pragma Profile (Ravenscar);".
        * snames.ads-tmpl: Declare Name_Jorvik Name_Id. Unlike
        Ravenscar, Jorvik is not a pragma name and has no corresponding
        element in the Pragma_Id enumeration type; this means that its
        declaration must not occur between those of First_Pragma_Name
        and Last_Pragma_Name.
        * sem_prag.adb (Analyze_Pragma): Add call to
        Set_Ravenscar_Profile for Jorvik, similar to the existing calls
        for Ravenscar and the GNAT Ravenscar variants.

2020-06-08  Arnaud Charlet  <charlet@adacore.com>

        * sem_ch8.adb (Analyze_Object_Renaming): Update Get_Object_Name
        to go through N_Qualified_Expression and N_Type_Conversion.  Fix
        another case of wrong usage of E_Anonymous_Access_Type instead
        of Anonymous_Access_Kind.
        * sem_util.adb (Is_Dependent_Component_Of_Mutable_Object): Work
        on the original node.
        (Is_Aliased_View): Take into account N_Qualified_Expression.

2020-06-08  Arnaud Charlet  <charlet@adacore.com>

        * sem_eval.adb (Eval_Type_Conversion): Fix handling of
        enumeration to integer conversions.
        * exp_attr.adb (Expand_N_Attribute_Reference
        [Attribute_Enum_Rep]): Remove special casing for first-level
        renaming, best left to the general folding mechanism via
        Eval_Type_Conversion.

2020-06-08  Eric Botcazou  <ebotcazou@adacore.com>

        * atree.adb (New_Copy): Do not clear Has_Dynamic_Range_Check.
        * checks.ads (Append_Range_Checks): Remove Flag_Node parameter.
        (Insert_Range_Checks): Likewise and remove default value of
        Static_Loc parameter.
        * checks.adb (Append_Range_Checks): Remove Flag_Node parameter.
        Do not test and set Has_Dynamic_Range_Check.
        (Insert_Range_Checks): Likewise and remove default value of
        Static_Loc parameter.
        * csinfo.adb (CSinfo): Remove 'L' from [NEUB]_Fields pattern and
        do not handle Has_Dynamic_Range_Check.
        * exp_ch5.adb (Expand_N_Assignment_Statement): Remove argument
        in call to Insert_Range_Checks.
        * sem_ch3.adb (Analyze_Subtype_Declaration): Do not fiddle
        with Has_Dynamic_Range_Check.
        (Process_Range_Expr_In_Decl): Remove argument in calls to
        Insert_Range_Checks and Append_Range_Checks.
        * sinfo.ads (Has_Dynamic_Range_Check): Delete.
        (Set_Has_Dynamic_Range_Check): Likewise.
        * sinfo.adb (Has_Dynamic_Range_Check): Delete.
        (Set_Has_Dynamic_Range_Check): Likewise.
        * treepr.adb (Print_Node): Do not print Has_Dynamic_Range_Check.

2020-06-08  Steve Baird  <baird@adacore.com>

        * sem_ch13.ads: Export new function
        All_Membership_Choices_Static.
        * sem_ch13.adb: Implement new function
        All_Membership_Choices_Static.  This involves moving the
        functions Is_Static_Choice and All_Membership_Choices_Static,
        which were previously declared within the function
        Is_Predicate_Static, out to library level so that they can be
        called by the new function. The already-exisiting code in
        Is_Predicate_Static which became the body of
        All_Membership_Choices_Static is replaced with a call to the new
        function in order to avoid duplication.
        * exp_ch9.adb (Is_Pure_Barrier): Several changes needed to
        implement rules of AI12-0290 and RM D.7's definition of
        "pure-barrier-eligible". These changes include adding a call to
        the new function Sem_13.All_Membership_Choices_Static, as per
        the "see 4.9" in RM D.7(1.6/5).

2020-06-08  Richard Kenner  <kenner@adacore.com>

        * exp_unst.adb (Visit_Node): When visiting array attribute
        nodes, in addition to checking the type of Get_Referenced_Object
        of the prefix, also check the actual type of the prefix.

2020-06-08  Gary Dismukes  <dismukes@adacore.com>

        * checks.adb (Apply_Predicate_Check): Refine test for being in a
        subprogram body to account for no Corresponding_Body case,
        avoiding blowups arising due to other changes here.
        * exp_ch4.adb (Expand_N_Qualified_Expression): Apply predicate
        checks, if any, after constraint checks are applied.
        * sem_eval.ads (Check_Expression_Against_Static_Predicate): Add
        Check_Failure_Is_Error formal for conditionalizing warning vs.
        error messages.
        * sem_eval.adb (Check_Expression_Against_Static_Predicate):
        Issue an error message rather than a warning when the new
        Check_Failure_Is_Error formal is True. In the nonstatic or
        Dynamic_Predicate case where the predicate is known to fail,
        emit the check to ensure that folded cases get checks applied.
        * sem_res.adb (Resolve_Qualified_Expression): Call
        Check_Expression_Against_Static_Predicate, passing True for
        Check_Failure_Is_Error, to ensure we reject static predicate
        violations. Remove code that was conditionally calling
        Apply_Predicate_Check, which is no longer needed, and that check
        procedure shouldn't be called from a resolution routine in any
        case. Also remove associated comment about preventing infinite
        recursion and consistency with Resolve_Type_Conversion, since
        that handling was already similarly removed from
        Resolve_Type_Convesion at some point.
        (Resolve_Type_Conversion): Add passing of True for
        Check_Failure_Is_Error parameter on call to
        Check_Expression_Against_Static_Predicate, to ensure that static
        conversion cases that violate a predicate are rejected as
        errors.

2020-06-08  Piotr Trojanek  <trojanek@adacore.com>

        * snames.ads-tmpl (Name_SPARK): Restore after being deleted.

2020-06-08  Arnaud Charlet  <charlet@adacore.com>

        * exp_aggr.adb, exp_ch6.adb, par-ch11.adb, par-ch6.adb,
        par-ch7.adb, par-prag.adb, restrict.adb, restrict.ads,
        scans.ads, scng.adb, sem_aggr.adb, sem_attr.adb, sem_ch11.adb,
        sem_ch12.adb, sem_ch3.adb, sem_ch3.ads, sem_ch4.adb,
        sem_ch5.adb, sem_ch6.adb, sem_ch7.adb, sem_ch8.adb, sem_ch9.adb,
        sem_res.adb, sem_util.adb, sem_util.ads, snames.ads-tmpl,
        gnatbind.adb, libgnat/s-rident.ads,
        doc/gnat_rm/standard_and_implementation_defined_restrictions.rst:
        Remove processing of SPARK_05 restriction.
        * gnat_rm.texi: Regenerate.
        * opt.ads: Remove processing of old checksum which is now
        handled by gprbuild directly.

2020-06-08  Arnaud Charlet  <charlet@adacore.com>

        * sem_ch12.adb (Instantiate_Object): Relax rules related to null
        exclusions and generic objects. Handle all anonymous types
        consistently and not just E_Anonymous_Access_Type.
        * sem_ch8.adb (Analyze_Object_Renaming): Change wording so that
        it applies to both renamings and instantiations to avoid
        confusion.

2020-06-08  Arnaud Charlet  <charlet@adacore.com>

        * libgnat/a-textio.ads (File_Mode): Fix typo in comment.

2020-06-08  Eric Botcazou  <ebotcazou@adacore.com>

        * sem_res.adb (Resolve_Indexed_Component): Do not give a warning
        for a nonatomic component of an atomic array which is subject to
        an address clause in Ada 2020 mode.
        (Resolve_Selected_Component): Likewise for an atomic record.

2020-06-08  Philippe Gil  <gil@adacore.com>

        * doc/gnat_ugn/the_gnat_compilation_model.rst: in "Handling
        Files with Multiple Units" part documents gnatname use for
        unmodified files handling and gnatchop use for files
        refactoring.
        * gnat_ugn.texi: Regenerate.

2020-06-08  Arnaud Charlet  <charlet@adacore.com>

        * doc/gnat_rm/implementation_defined_attributes.rst:
        Enum_Rep/Enum_Val are standard Ada 202x attributes.
        * gnat_rm.texi: Regenerate.

2020-06-08  Javier Miranda  <miranda@adacore.com>

        * exp_aggr.adb (Safe_Component): Remove code that considers as
        unsafe components that are aggregates; such removal allows the
        frontend to proceed and evaluate if they are safe by means of
        invoking Safe_Aggregate.

2020-06-08  Piotr Trojanek  <trojanek@adacore.com>

        * exp_spark.adb (Expand_SPARK_N_Attribute_Reference): Apply
        standard expansion to attributes First and Last.

2020-06-08  Piotr Trojanek  <trojanek@adacore.com>

        * exp_attr.adb, exp_util.ads, exp_util.adb (Get_Index_Subtype):
        Move from the body of Exp_Attr to Exp_Util and expose from the
        spec.
        * exp_spark.adb (Expand_SPARK_N_Attribute_Reference): Replace
        duplicated code with a call to Get_Index_Subtype.

2020-06-08  Arnaud Charlet  <charlet@adacore.com>

        * sem_ch8.adb (Analyze_Object_Renaming): Simplify code by moving
        many special cases to Is_Object_Reference and removing others by
        only checking renamings coming from sources.
        * sem_util.adb (Is_Object_Reference): Update for AI12-0226 and
        add more regular handling of 'Priority. Remove special cases no
        longer needed now that we are only checking renamings coming
        from sources.

2020-06-08  Claire Dross  <dross@adacore.com>

        * libgnat/a-cofove.adb (Insert_Space): The computation of Index
        generates a spurious compiler warning about a value not being in
        range for a statically dead branch.  Silence it using pragma
        Warnings.

2020-06-08  Bob Duff  <duff@adacore.com>

        * bindo-graphs.adb (function Add_Edge): Rename
        Add_Edge_With_Return to Add_Edge; we can tell it returns because
        it's a function, and overloading seems appropriate in this case.
        If Activates_Task=True, and we're not going to add a new edge
        because an existing Pred-->Succ edge already exists, then set
        Activates_Task to True on the preexisting edge.  This ensures
        that the message:
        info: use pragma Restrictions (No_Entry_Calls_In_Elaboration_Code)
        appears when appropriate, no matter in what order the edges
        happened to be processed.
        (procedure Add_Edge): Remove redundant assertions.
        (Activates_Task): Other kinds of edges can have
        Activates_Task=True.  For example, if we had a With_Edge and
        then an Invocation_Edge with Activates_Task=True, then the
        With_Edge has Activates_Task set to True.
        (Add_Edge_Kind_Check): New procedure to prevent other bugs of
        this nature. For example, if we were to sometimes call Add_Edge
        for a Spec_Before_Body_Edge followed by Add_Edge for a
        With_Edge, and sometimes in the other order, that would cause a
        similar bug to what we're fixing here.
        (Set_Is_Recorded_Edge): Val parameter is not used. Get rid of
        it.
        (Set_Activates_Task): New procedure to set the Activates_Task flag.
        * bindo-graphs.ads (Library_Graph_Edge_Kind): Reorder the
        enumeration literals to facilitate Add_Edge_Kind_Check.
        * ali.adb (Known_ALI_Lines): The comment about "still available"
        was wrong. Fix that by erasing the comment, and encoding the
        relevant information in real code. Take advantage of Ada's full
        coverage rules by removing "others =>".  Also DRY.

2020-06-08  Ed Schonberg  <schonberg@adacore.com>

        * par-ch12.adb (P_Formal_Derived_Type_Definition): Handle
        properly formal derived types that include aspect
        specifications, so that the "with" keyword appears twice in the
        formal type declaration.
        * sem_ch13.adb (Has_Generic_Parent): Return true if the type
        itself is a generic formal.

2020-06-08  Dmitriy Anisimkov  <anisimko@adacore.com>

        * socket.c (__gnat_minus_500ms): Remove
        IsWindowsVersionOrGreater from condition.

2020-06-08  Claire Dross  <dross@adacore.com>

        * libgnat/a-cfdlli.ads, libgnat/a-cfhama.ads,
        libgnat/a-cfhase.ads, libgnat/a-cforma.ads, libgnat/a-cforse.ads
        (Delete): Add Depends contract.

2020-06-08  Arnaud Charlet  <charlet@adacore.com>

        * snames.ads-tmpl (Name_Program_Error_Check,
        Name_Tasking_Check): New constants.
        * types.ads (Program_Error_Check, Tasking_Check): New constants.
        (All_Checks): Update accordingly.

2020-06-05  Arnaud Charlet  <charlet@adacore.com>

        * sem_prag.adb (Validate_Compile_Time_Warning_Or_Error): Use ??.

2020-06-05  Arnaud Charlet  <charlet@adacore.com>

        * cstand.adb (Create_Standard): Update comments.

2020-06-05  Arnaud Charlet  <charlet@adacore.com>

        * scng.adb (Scan): Fix typo to take into account all future
        versions of Ada.
        * sem_attr.ads (Attribute_Impl_Def): Add Attribute_Reduce for
        now.
        * sem_attr.adb (Analyze_Attribute): Only allow 'Reduce under
        -gnatX.
        * snames.ads-tmpl (Name_Reduce): Update comment.

2020-06-05  Thomas Quinot  <quinot@adacore.com>

        * exp_disp.adb (Expand_Interface_Thunk): Add comment about
        gnatcov reliance on specific name used for thunks.

2020-06-05  Ed Schonberg  <schonberg@adacore.com>

        * sem_ch3.adb (Analyze_Subtype_Declaration): For scalar types,
        and for subtype declarations without a constraint, subtype
        inherits Atomic flag from base type.

2020-06-05  Piotr Trojanek  <trojanek@adacore.com>

        * doc/gnat_rm/implementation_defined_attributes.rst (Enum_Rep):
        Remove extra colon.
        * gnat_rm.texi: Regenerate.

2020-06-05  Eric Botcazou  <ebotcazou@adacore.com>

        * atree.adb (New_Copy): Clear Has_Dynamic_Range_Check on
        subexpression nodes.
        * checks.adb (Append_Range_Checks): Assert that the node
        doesn't have the Has_Dynamic_Range_Check flag set.
        (Insert_Range_Checks): Likewise.
        * exp_ch3.adb (Expand_N_Subtype_Indication): Do not apply
        range checks for a full type or object declaration.
        * sem_ch3.ads: Move with and use clauses for Nlists to...
        (Process_Range_Expr_In_Decl): Change default to No_List for
        the Check_List parameter.
        * sem_ch3.adb: ...here.
        (Process_Range_Expr_In_Decl): Likewise.  When the insertion
        node is a declaration, only insert on the list if is present
        when the declaration involves discriminants, and only insert
        on the node when there is no list otherwise.

2020-06-05  Piotr Trojanek  <trojanek@adacore.com>

        * sem_aggr.adb (Resolve_Record_Aggregate): Create the
        N_Aggregate node with its Expressions field set to No_List and
        not to an empty list.

2020-06-05  Dmitriy Anisimkov  <anisimko@adacore.com>

        * libgnat/s-os_lib.adb (Is_Dirsep): Moved from Build_Path to
        package level to reuse.
        (Normalize_Pathname.Final_Value): Reduce 2 'if' statements to
        one.
        (Normalize_Pathname.Fill_Directory): New procedure instead of
        function Get_Directory. Remove slash to backslash conversion and
        drive letter uppercasing on Windows.

2020-06-05  Arnaud Charlet  <charlet@adacore.com>

        * sem.adb (Assert_Done): Relax check for main unit, as it was
        overzealous in the case of the main unit itself.

2020-06-05  Piotr Trojanek  <trojanek@adacore.com>

        * exp_ch3.adb, sem_ch8.adb, sem_util.adb: Use Is_Incomplete_Type
        to make the code easier to read.

2020-06-05  Piotr Trojanek  <trojanek@adacore.com>

        * einfo.adb: Minor reformatting.
        * sem_util.adb (Has_Full_Default_Initialization,
        Is_Partially_Initialized_Type, Caller_Known_Size_Record,
        Large_Max_Size_Mutable): Iterate with
        First_Component/Next_Component; rename Ent to Comp.

2020-06-05  Eric Botcazou  <ebotcazou@adacore.com>

        * exp_aggr.adb (Aggr_Assignment_OK_For_Backend): Use
        Expr_Rep_Value instead of Expr_Value to obtain the equivalent
        integer value.
        * sem_eval.ads (Expr_Value): Document more supported cases.
        * sem_eval.adb (Expr_Rep_Value): Copy missing cases from
        Exp_Value.

2020-06-05  Bob Duff  <duff@adacore.com>

        * rtsfind.adb, rtsfind.ads: Move subtypes of RTU_Id into package
        body, because they are not needed by clients. Change "Child_" to
        "Descendant", because grandchildren and great grandchildren are
        involved.  Replace all the repetitive comments with a single
        concise one.  Change the parent subtypes to be more consistent;
        use the most specific parent.

2020-06-05  Piotr Trojanek  <trojanek@adacore.com>

        * rtsfind.ads, rtsfind.adb (Is_Text_IO_Special_Package): Moved
        from the GNATprove backend to the frontend.

2020-06-05  Yannick Moy  <moy@adacore.com>

        * sem_util.ads: Add comment about function only used in
        CodePeer.

2020-06-05  Ed Schonberg  <schonberg@adacore.com>

        * sem_ch9.adb, (Analyze_Task_Body): After analying the task
        body, indicate that all local variables have no delayed aspects.
        This prevents improper later calls to
        Check_Aspect_At_End_Of_Declarations, that would happen when the
        constructed task_procedure body (generated during expansion) is
        analyzed. The legality of aspect specifications that may appear
        on local declarations has already been established, and it is in
        general not possible to recheck them properly during expansion,
        when visibility may not be fully established.

2020-06-05  Piotr Trojanek  <trojanek@adacore.com>

        * libgnat/a-cofuve.ads (First): Add Global contract.

2020-06-05  Arnaud Charlet  <charlet@adacore.com>

        * sem_prag.adb (Set_Convention_From_Pragma): Set the convention
        of anonymous access array components.

2020-06-05  Arnaud Charlet  <charlet@adacore.com>

        * libgnat/a-calfor.ads, libgnat/a-catizo.ads,
        libgnat/a-catizo.adb (Local_Time_Offset, Local_Image): New.
        (UTC_Time_Offset): Now a renaming of Local_Time_Offset.

2020-06-05  Eric Botcazou  <ebotcazou@adacore.com>

        * sem_ch3.adb (Available_Full_View): New function returning
        either the full or the underlying full view.
        (Build_Full_Derivation): Add guard for the full view.
        (Copy_And_Build): Retrieve the underlying full view, if any,
        also if deriving a completion.
        (Build_Derived_Private_Type): Use Available_Full_View throughout
        to decide whether a full derivation must be done.

2020-06-05  Bob Duff  <duff@adacore.com>

        * exp_attr.adb, exp_ch11.adb, exp_imgv.adb, exp_tss.ads,
        par-ch4.adb, sem_attr.adb, sem_util.ads: Misc cleanup.

2020-06-05  Arnaud Charlet  <charlet@adacore.com>

        * libgnat/a-nudira.ads, libgnat/a-nudira.adb (Random): New
        function.

2020-06-05  Arnaud Charlet  <charlet@adacore.com>

        * sem_attr.ads (Attribute_Impl_Def): Remove Enum_Rep/Val.
        * sem_attr.adb (Attribute_20): New, move Enum_Rep/Val here.
        (Analyze_Attribute): Take Attribute_20 into account.

2020-06-05  Arnaud Charlet  <charlet@adacore.com>

        * restrict.ads (Unit_Array): Add a-direct.

2020-06-05  Arnaud Charlet  <charlet@adacore.com>

        * libgnat/s-stopoo.ads: Mark package Pure and leave room for
        Nonblocking once this aspect is supported.

2020-06-05  Eric Botcazou  <ebotcazou@adacore.com>

        * exp_attr.adb (Expand_N_Attribute_Reference) <Valid_Scalars>:
        Set the No_Truncation flag on the unchecked conversion built for
        scalar types.

2020-06-05  Bob Duff  <duff@adacore.com>

        * einfo.adb, einfo.ads, exp_util.adb: Remove Invariants_Ignored
        flag.
        * sem_prag.adb (Invariant): Instead of setting a flag to be
        checked elsewhere, remove the pragma as soon as it is analyzed
        and checked for legality.

2020-06-05  Eric Botcazou  <ebotcazou@adacore.com>

        * checks.ads (Apply_Length_Check): Rename Ck_Node parameter to
        Expr.
        (Apply_Range_Check): Likewise.
        (Get_Range_Checks): Likewise.
        * checks.adb (Apply_Float_Conversion_Check): Likewise.
        (Apply_Selected_Length_Checks): Likewise.
        (Apply_Selected_Range_Checks): Likewise.
        (Guard_Access): Likewise.
        (Selected_Length_Checks): Likewise.  Also avoid shadowing in
        child procedures.
        (Selected_Range_Checks): Likewise.

2020-06-05  Arnaud Charlet  <charlet@adacore.com>

        * par-ch3.adb, par-ch4.adb, scng.adb, sem_aggr.adb,
        sem_ch10.adb, sem_ch12.adb, sem_prag.adb: Update wording: change
        Ada_2020 to Ada 2020 in comments and mention -gnat2020 instead
        of -gnatX switch.

2020-06-04  Arnaud Charlet  <charlet@adacore.com>

        * libgnat/i-c.ads (long_long, unsigned_long_long): New
        definitions.

2020-06-04  Arnaud Charlet  <charlet@adacore.com>

        * Makefile.rtl: add a-tasini object
        * impunit.adb (Non_Imp_File_Names_95): Add s-tasini.
        * libgnarl/a-tasini.ads, libgnarl/a-tasini.adb: New files.
        * libgnarl/s-taskin.ads (Global_Initialization_Handler): New.
        * libgnarl/s-tassta.adb (Task_Wrapper): Call
        Global_Initialization_Handler if non null.

2020-06-04  Ed Schonberg  <schonberg@adacore.com>

        * sem_ch12.adb (Build_Suprogram_Body_Wrapper,
        Build_Subprogram_Decl_Wrapper): New suprograms, to create the
        wrappers needed to implement contracts on formsl subprograms at
        the point of instantiation.
        (Build_Subprogram_Wrappers): New subprogram within
        Analyze_Associations, calls the above when the formal subprogram
        has contracts, and expansion is enabled.
        (Instantiate_Formal_Subprogram): If the actual is not an entity,
        such as a function attribute, or a synchronized operation,
        create a function with an internal name and call it within the
        wrapper.
        (Analyze_Generic_Formal_Part): Analyze contracts at the end of
        the list of formal declarations.
        * sem_prag.adb (Analyze_Pre_Post_Condtion): In Ada_2020 the
        aspect and corresponding pragma can appear on a formal
        subprogram declaration.
        (Find_Related_Declaration_Or_Body): Ditto.

2020-06-04  Eric Botcazou  <ebotcazou@adacore.com>

        * exp_ch7.adb (Make_Final_Call): Set the type of the object, if
        it is unanalyzed, before calling Convert_View on it.

2020-06-04  Arnaud Charlet  <charlet@adacore.com>

        * adabkend.adb, back_end.ads, opt.ads, sem_ch6.adb: Get rid of
        Disable_FE_Inline_Always.

2020-06-04  Eric Botcazou  <ebotcazou@adacore.com>

        * exp_ch7.adb (Make_Final_Call): Add missing guard.
        * sem_ch3.adb (Copy_And_Build): Adjust recursive call for
        private types.
        (Build_Derived_Private_Type): Deal with underlying full views.

2020-06-04  Bob Duff  <duff@adacore.com>

        * libgnat/a-stobbu.adb, libgnat/a-stobbu.ads,
        libgnat/a-stobfi.adb, libgnat/a-stobfi.ads,
        libgnat/a-stoubu.adb, libgnat/a-stoubu.ads,
        libgnat/a-stoufi.adb, libgnat/a-stoufi.ads,
        libgnat/a-stoufo.adb, libgnat/a-stoufo.ads,
        libgnat/a-stouut.adb, libgnat/a-stouut.ads,
        libgnat/a-stteou.ads, libgnat/s-putaim.adb,
        libgnat/s-putaim.ads, libgnat/s-putima.adb, libgnat/s-putima.ads
        (Ada.Strings.Text_Output and children, System.Put_Images): New
        runtime support for Put_Image.
        * gcc-interface/Make-lang.in (GNAT_ADA_OBJS): Add
        exp_put_image.o.
        * exp_put_image.adb, exp_put_image.ads: New compiler package
        that generates calls to runtime routines that implement
        Put_Image.
        * Makefile.rtl: Add object files for Ada.Strings.Text_Output and
        children and System.Put_Images.
        * aspects.adb: Simplify initialization of Canonical_Aspect.
        * aspects.ads: Improve documentation. Add Aspect_Put_Image.
        * exp_attr.adb: Add support for Put_Image, by calling routines
        in Exp_Put_Image.
        * sem_util.adb (Is_Predefined_Dispatching_Operation): Return
        True for new TSS_Put_Image operation.
        * exp_ch3.adb: For tagged types, build a dispatching
        TSS_Put_Image operation by calling routines in Exp_Put_Image.
        * exp_disp.adb, exp_disp.ads: Make TSS_Put_Image be number 10,
        adjusting other operations' numbers after 10. We choose 10
        because that's the last number shared by all runtimes.
        * exp_strm.adb: Use named notation as appropriate.
        * exp_cg.adb, exp_tss.ads: Add TSS_Put_Image.
        * libgnat/a-tags.ads: Modify Max_Predef_Prims for the new
        TSS_Put_Image.
        * impunit.adb: Add new runtime packages.
        * rtsfind.adb, rtsfind.ads: Add support for
        Ada.Strings.Text_Output, Ada.Strings.Text_Output.Utils, and
        System.Put_Images.
        * sem_attr.adb: Error checking for Put_Image calls.
        * sem_ch12.adb (Valid_Default_Attribute): Support for passing
        Put_Image as a generic formal parameter.
        * sem_ch13.adb: Analysis of Put_Image aspect. Turn it into a
        Put_Image attribute definition clause.
        * sem_ch8.adb (Analyze_Subprogram_Renaming): Support for
        renaming of the Put_Image attribute.
        * snames.adb-tmpl: Fix comments.
        * snames.ads-tmpl (Name_Put_Image): New Name_Id.
        (Attribute_Put_Image): New Attribute_Id.
        * tbuild.adb, tbuild.ads (Make_Increment): New utility.

2020-06-04  Eric Botcazou  <ebotcazou@adacore.com>

        * exp_attr.adb (xpand_N_Attribute_Reference) <Input>: Call
        Find_Inherited_TSS to look up the Stream_Read TSS.
        <Output>: Likewise for the Stream_Write TSS.
        * exp_ch7.adb (Make_Final_Call): Call Underlying_Type on
        private types to account for underlying full views.
        * exp_strm.ads  (Build_Record_Or_Elementary_Input_Function):
        Remove Use_Underlying parameter.
        * exp_strm.adb (Build_Record_Or_Elementary_Input_Function):
        Likewise and adjust accordingly.
        * exp_tss.adb (Find_Inherited_TSS): Deal with full views.
        Call Find_Inherited_TSS recursively on the parent type if
        the base type is a derived type.
        * sem_ch13.adb (Analyze_Attribute_Definition_Clause): Take
        into account underlying full views for derived types.
        * sem_ch3.adb (Copy_And_Build): Look up the underlying full
        view only for a completion.  Be prepared for private types.
        (Build_Derived_Private_Type): Build an underlying full view
        for a completion in the general case too.

2020-06-04  Arnaud Charlet  <charlet@adacore.com>

        * back_end.adb, opt.ads, par-prag.adb, sem_ch5.adb,
        sem_prag.adb, sinfo.adb, sinfo.ads, snames.ads-tmpl,
        doc/gnat_rm/implementation_defined_pragmas.rst: Remove
        experimental support for OpenACC.
        * gcc-interface/misc.c, gcc-interface/trans.c,
        gcc-interface/lang.opt: Ditto.
        * gnat_rm.texi: Regenerate.

2020-06-04  Eric Botcazou  <ebotcazou@adacore.com>

        * checks.adb (Generate_Discriminant_Check): Remove obsolete
        comment.

2020-06-04  Gary Dismukes  <dismukes@adacore.com>

        * par-ch3.adb (P_Identifier_Declarations): Add parsing of object
        renamings that have neither a subtype_mark nor an
        access_definition. Issue an error if the version is earlier than
        Ada_2020, and suggest using -gnatX.
        * sem_ch8.adb (Analyze_Object_Renaming): Handle
        object_renaming_declarations that don't have an explicit
        subtype. Errors are issued when the name is inappropriate or
        ambiguous, and otherwise the Etype of the renaming entity is set
        from the Etype of the renamed object.
        * sem_util.adb (Has_Null_Exclusion): Allow for the case of no
        subtype given in an N_Object_Renaming_Declaration.
        * sprint.adb (Sprint_Node_Actual): Handle printing of
        N_Object_Renaming_Declarations that are specified without an
        explicit subtype.

2020-06-04  Eric Botcazou  <ebotcazou@adacore.com>

        * sinfo.ads (N_Delta_Aggregate): Document Etype field.
        (N_Case_Expression): Likewise.
        (Is_Syntactic_Field) <N_Quantified_Expression>: Adjust.
        <N_Case_Expression>: Likewise.

2020-06-04  Arnaud Charlet  <charlet@adacore.com>

        * adaint.c: Avoid redefining IS_DIR_SEPARATOR macro.

2020-06-04  Arnaud Charlet  <charlet@adacore.com>

        * sem.adb (Walk_Library_Items): Defer processing of main spec
        after all other specs and before processing bodies.

2020-06-04  Arnaud Charlet  <charlet@adacore.com>

        * bindgen.adb (Gen_Adafinal): Adafinal is convention Ada, not C.

2020-06-04  Ed Schonberg  <schonberg@adacore.com>

        * sinput.adb (Sloc_Range): Ignore node in the tree if it appears
        in a unit different from that of the node whose Sloc range we
        are computing. This is necessary when computing the source range
        of a subprogram body whose declaration includes a pre- or
        postcondition, because declaration and body may appear in
        different units, and the expanded code for the body includes
        copies of the contract code.

2020-06-04  Alexandre Oliva  <oliva@adacore.com>

        * switch.adb (Is_Internal_GCC_Switch): Recognize dumpdir and
        dumpbase-ext.  Mark auxbase and auxbase-strip for removal.

2020-06-04  Eric Botcazou  <ebotcazou@adacore.com>

        * sem_attr.adb (Resolve_Attribute) <Access>: Do not generate
        the secondary message about a missing pragma if the convention
        of the prefix is Intrinsic.
        * sem_ch12.adb (Instantiate_Formal_Subprogram): Only set the
        Convention and the Is_Inlined flag on a null procedure.

2020-06-04  Justin Squirek  <squirek@adacore.com>

        * sem_ch6.adb (Check_Return_Obj_Accessibility): Change to
        Check_Return_Construct_Accessibility to better reflect its
        purpose.  Add loop to properly obtain the object declaration
        from an expanded extended return statement and add calls to get
        the original node for associated values. Also, avoid checks when
        the return statement being examined comes from an internally
        generated function.

2020-06-04  Dmitriy Anisimkov  <anisimko@adacore.com>

        * adaint.c (__gnat_is_absolute_path): Check for directory
        separator after drive and colon.
        (IS_DIR_SEPARATOR): Define new inline substitution.

2020-06-04  Eric Botcazou  <ebotcazou@adacore.com>

        * checks.ads: Update documentation about range checks and fix
        minor other things.

2020-06-04  Eric Botcazou  <ebotcazou@adacore.com>

        * sem_ch3.adb (Array_Type_Declaration): Apply special handling
        of private index types to generic packages and restrict it to
        index types defined in the current scope.

2020-06-04  Arnaud Charlet  <charlet@adacore.com>

        * libgnat/a-exextr.adb (Global_Unhandled_Action): New global
        variable.
        (Notify_Exception): Take into account Global_Unhandled_Action
        and fix latent race condition.
        (Exception_Action): Mark Favor_Top_Level so that variables can
        be atomic.
        (Global_Action): Mark atomic to remove the need for a lock.
        * libgnat/g-excact.ads, libgnat/g-excact.adb
        (Register_Global_Unhandled_Action): New procedure.
        (Register_Global_Action): Remove lock.
        * libgnat/s-stalib.ads (Raise_Action): Mark Favor_Top_Level to
        be compatible with Exception_Action.
        * sem_warn.adb (Warn_On_Unreferenced_Entity): Fix logic wrt
        Volatile entities and entities with an address clause: the code
        did not match the comment/intent.

2020-06-04  Arnaud Charlet  <charlet@adacore.com>

        * comperr.adb (Compiler_Abort): Update URL and bug report
        instructions.

2020-06-04  Steve Baird  <baird@adacore.com>

        * libgnat/s-imgrea.ads: Declare a named number
        Max_Real_Image_Length with value 5200.  Provide a comment
        explaining why this value was chosen.
        * libgnat/s-imgrea.adb (Set_Image_Real): Increase the upper
        bound of the local String variable Digs to
        Max_Real_Image_Length.
        * libgnat/a-tiflau.adb (Put): Increase the upper bound of the
        local String variable Buf to Max_Real_Image_Length.
        (Puts): Increase the upper bound of the local String variable
        Buf to Max_Real_Image_Length.

2020-06-04  Arnaud Charlet  <charlet@adacore.com>

        * libgnarl/a-dynpri.adb, libgnarl/a-taside.adb,
        libgnarl/a-taster.adb, libgnarl/s-interr.adb,
        libgnarl/s-interr__sigaction.adb, libgnarl/s-taasde.adb,
        libgnarl/s-taenca.adb, libgnarl/s-taenca.ads,
        libgnarl/s-taprop.ads, libgnarl/s-taprop__hpux-dce.adb,
        libgnarl/s-taprop__linux.adb, libgnarl/s-taprop__mingw.adb,
        libgnarl/s-taprop__posix.adb, libgnarl/s-taprop__qnx.adb,
        libgnarl/s-taprop__solaris.adb, libgnarl/s-taprop__vxworks.adb,
        libgnarl/s-tarest.adb, libgnarl/s-tasini.adb,
        libgnarl/s-tasque.adb, libgnarl/s-tasque.ads,
        libgnarl/s-tasren.adb, libgnarl/s-tasren.ads,
        libgnarl/s-tassta.adb, libgnarl/s-tasuti.adb,
        libgnarl/s-tasuti.ads, libgnarl/s-tpoben.adb,
        libgnarl/s-tpobop.adb, libgnarl/s-tpopmo.adb,
        libgnarl/s-tposen.adb, libgnat/s-parame.ads,
        libgnat/s-parame__ae653.ads, libgnat/s-parame__hpux.ads,
        libgnat/s-parame__vxworks.ads: Remove references to Single_Lock
        and Global_Lock.

2020-06-04  Arnaud Charlet  <charlet@adacore.com>

        * libgnat/s-atopar.adb, libgnat/s-atopex.adb: Use Object_Size
        instead of Size, otherwise many derived types will be rejected
        (e.g. a type with a 14 bits 'Size and a 16 bits 'Object_Size).

2020-06-04  Eric Botcazou  <ebotcazou@adacore.com>

        * sem_ch12.adb (Copy_Generic_Node): Add special handling for a
        conversion between access types.

2020-06-04  Eric Botcazou  <ebotcazou@adacore.com>

        * sem_ch12.adb (Check_Generic_Actuals): Also restore the proper
        views of the actuals of the parent instances if the formals are
        used as actuals of the children.
        (Instantiate_Type): Add comment.

2020-06-04  Gary Dismukes  <dismukes@adacore.com>

        * sem_ch12.adb: Minor editorial fixes.

2020-06-03  Eric Botcazou  <ebotcazou@adacore.com>

        * sem_ch12.adb (Denotes_Previous_Actual): Delete.
        (Check_Generic_Actuals): Do not special case array types whose
        component type denotes a previous actual.  Do not special case
        access types whose base type is private.
        (Check_Private_View): Remove code dealing with secondary types.
        Do not switch the views of an array because of its component.
        (Copy_Generic_Node): Add special handling for a comparison
        operator on array types.
        (Instantiate_Type): Do not special case access types whose
        designated type is private.
        (Set_Global_Type): Do not special case array types whose
        component type is private.

2020-06-03  Justin Squirek  <squirek@adacore.com>

        * sem_ch10.adb (Process_Body_Clauses): Add loop to interate
        through all prefixes in a use_type clause so that all packages
        in the expanded name get examined for effectiveness.

2020-06-03  Eric Botcazou  <ebotcazou@adacore.com>

        * sem_ch12.adb (Check_Private_View): Clean up implementation of
        second main case, when the generic sees the private declaration.

2020-06-03  Arnaud Charlet  <charlet@adacore.com>

        * libgnat/a-nbnbin.ads: Minor reformatting.
        * libgnat/a-nbnbre.ads, libgnat/a-nbnbre.adb (Is_Valid): Add
        convention Intrinsic. Add detection of uninitialized big reals.

2020-06-03  Arnaud Charlet  <charlet@adacore.com>

        * sem_util.ads, sem_util.adb (Side_Effect_Free_Statements,
        Side_Effect_Free_Loop): New functions.
        (Has_Non_Null_Statements): Consider N_Call_Marker as a null
        statement.
        * sem_ch5.adb (Analyze_Loop_Parameter_Specification): Call
        Set_Is_Null_Loop even inside a generic instantiation.
        (Analyze_Loop_Statement): Mark for removal loops with no side
        effects.

2020-06-03  Eric Botcazou  <ebotcazou@adacore.com>

        * opt.ads (Allow_Integer_Address): Fix typo in comment.
        * stand.ads (Standard_Address): New entity.
        * cstand.adb (Create_Standard): Create it.
        * sem_ch4.adb (Operator_Check): Convert the operands of an
        operation with addresses and integers to Standard_Address
        if pragma Allow_Integer_Address is in effect.

2020-06-03  Eric Botcazou  <ebotcazou@adacore.com>

        * libgnat/s-atopar.adb (Atomic_Fetch_And_Add): Make use of an
        equivalent static expression.
        (Atomic_Fetch_And_Subtract): Likewise.
        (Is_Lock_Free): Likewise.
        * libgnat/s-atopex.adb (Atomic_Exchange): Likewise.
        (Atomic_Compare_And_Exchange): Likewise.
        (Is_Lock_Free): Likewise.

2020-06-03  Vadim Godunko  <godunko@adacore.com>

        * libgnat/s-parame.ads, libgnat/s-parame__ae653.ads,
        libgnat/s-parame__hpux.ads: Fix typos.

2020-06-03  Eric Botcazou  <ebotcazou@adacore.com>

        * exp_util.adb (Remove_Side_Effects): For a type conversion, do
        not remove the side effects of the expression only if it is of
        universal integer type.

2020-06-03  Arnaud Charlet  <charlet@adacore.com>

        * libgnat/s-aotase.ads, libgnat/s-atoope.ads,
        libgnat/s-atopar.ads, libgnat/s-atopex.ads: Update header.

2020-06-03  Eric Botcazou  <ebotcazou@adacore.com>

        * exp_ch4.adb (Expand_N_Unchecked_Type_Conversion): Also fold the
        conversion for literals of enumeration types.

2020-06-03  Yannick Moy  <moy@adacore.com>

        * rtsfind.adb (Load_RTU): Correctly set/reset global variable to
        ignore SPARK_Mode in instances around loading.
        * sem_ch6.adb (Analyze_Subprogram_Body_Helper): Accept Off
        without prior On.
        * sem_ch7.adb (Analyze_Package_Body_Helper): Likewise.
        * sem_prag.adb (Analyze_Pragma): Always take into account
        SPARK_Mode Off.

2020-06-03  Arnaud Charlet  <charlet@adacore.com>

        * frontend.adb (Frontend): Call (dummy for now) tree checker.
        * debug.adb: Reserve -gnatd_V for the tree checker.
        * vast.ads, vast.adb: New files.
        * gcc-interface/Make-lang.in: Add vast.o.

2020-06-03  Justin Squirek  <squirek@adacore.com>

        * libgnat/a-cborse.adb, libgnat/a-cihase.adb,
        libgnat/a-ciorse.adb, libgnat/a-coorse.adb: Modified to use
        'Unrestricted_Access in certain cases where static accessibility
        errors were triggered.
        * exp_ch6.adb (Expand_Simple_Return_Statement): Add generation
        of dynamic accessibility checks as determined by
        Is_Special_Aliased_Formal_Access.
        * sem_attr.adb (Resolve_Attribute): Add call to
        Is_Special_Aliased_Formal_Access to avoid performing static
        checks where dynamic ones are required.
        * sem_ch6.adb (Check_Return_Obj_Accessibility): Handle renamed
        objects within component associations requiring special
        accessibility checks.
        * sem_util.adb, sem_util.ads (Is_Special_Aliased_Formal_Access):
        Created to detect the special case where an aliased formal is
        being compared against the level of an anonymous access return
        object.
        (Object_Access_Level): Remove incorrect condition leading to
        overly permissive accessibility levels being returned on
        explicitly aliased parameters.

2020-06-03  Eric Botcazou  <ebotcazou@adacore.com>

        * einfo.ads (Enum_Pos_To_Rep): Adjust description.
        * exp_attr.adb (Expand_N_Attribute_Reference) <Pred>:
        Reimplement in the case of an enumeration type with non-standard
        but contiguous representation.
        <Succ>: Likewise.
        <Val>: Likewise.
        * exp_ch3.adb (Expand_Freeze_Enumeration_Type): Count the
        literals in the first loop.  If the representation is
        contiguous, just build the index type of the array type and set
        Enum_Pos_To_Rep to it.

2020-06-03  Gary Dismukes  <dismukes@adacore.com>

        * exp_attr.adb (Expand_Loop_Entry_Attribute): Revise loop that
        resets the scopes of entities associated with Loop_Id to the
        scope of the new function, so the resetting is not restricted to
        itypes, but excludes loop parameters and the function entity
        itself. However, this fix is believed to be incomplete and a ???
        comment is added to indicate that.

2020-06-03  Bob Duff  <duff@adacore.com>

        * libgnat/s-regexp.ads: Fix comment

2020-06-03  Eric Botcazou  <ebotcazou@adacore.com>

        * exp_attr.adb (Expand_N_Attribute_Reference) <Enum_Rep>:
        In the case of an enumeration type, do an intermediate
        conversion to a small integer type.  Remove useless stuff.
        <Finalization_Size>: Do not hardcode Universal_Integer and
        fix a type mismatch in the assignment to the variable.
        <Max_Size_In_Storage_Elements>: Likewise.
        <From_Any>: Do not redefine the Ptyp local variable.
        <To_Any>: Likewise.
        <TypeCode>: Likewise.
        <Pos>: Small tweaks.
        <Val>: For an enumeration type with standard representation,
        apply the range check to the expression of a convertion to
        Universal_Integer, if any.  For an integer type, expand to
        a mere conversion.

2020-06-03  Eric Botcazou  <ebotcazou@adacore.com>

        * libgnat/s-rannum.adb (Random_Discrete): In the 32-bit case,
        use the same linear implementation as in the 64-bit case when
        the type has a contiguous representation.

2020-06-03  Gary Dismukes  <dismukes@adacore.com>

        * sem_util.adb (Build_Class_Wide_Clone_Decl): Call
        Set_Debug_Info_Needed to set the Needs_Debug_Info flag on
        Clone_Id if the flag is set on Spec_Id.

2020-06-03  Yannick Moy  <moy@adacore.com>

        * inline.adb (Expand_Inlined_Call): Do not suppress checks on
        inlined code in GNATprove mode.

2020-06-03  Eric Botcazou  <ebotcazou@adacore.com>

        * einfo.ads (Has_Contiguous_Rep): Fix typo in comment.

2020-06-03  Piotr Trojanek  <trojanek@adacore.com>

        * checks.adb, einfo.adb, exp_aggr.adb, exp_ch4.adb, exp_ch6.adb,
        exp_unst.adb, exp_util.adb, freeze.adb, inline.adb, repinfo.adb,
        sem_aggr.adb, sem_attr.adb, sem_aux.adb, sem_ch13.adb,
        sem_ch3.adb, sem_ch4.adb, sem_ch8.adb, sem_elab.adb,
        sem_eval.adb, sem_prag.adb, sem_res.adb, sem_smem.adb,
        sem_util.adb, treepr.adb: Replace uses of Next_ functions with
        corresponding procedures.

2020-06-03  Eric Botcazou  <ebotcazou@adacore.com>

        * exp_attr.adb (Attribute_Valid): Use Standard_Long_Long_Integer
        in lieu of Universal_Integer as large integer type.
        * exp_ch3.adb (Expand_Freeze_Enumeration_Type): Likewise.

2020-06-03  Arnaud Charlet  <charlet@adacore.com>

        * libgnat/s-auxdec.ads (Address_Int): New.

2020-06-03  Arnaud Charlet  <charlet@adacore.com>

        * aspects.adb, aspects.ads, atree.adb, atree.ads, elists.adb,
        elists.ads, fname.adb, fname.ads, gnat1drv.adb, lib.adb,
        lib.ads, namet.adb, namet.ads, nlists.adb, nlists.ads, opt.adb,
        opt.ads, osint-c.adb, osint-c.ads, repinfo.adb, repinfo.ads,
        sem_aux.adb, sem_aux.ads, sinput.adb, sinput.ads, stand.ads,
        stringt.adb, stringt.ads, switch-c.adb, table.adb, table.ads,
        uintp.adb, uintp.ads, urealp.adb, urealp.ads (Tree_Read,
        Tree_Write): Remove generation of ASIS trees.
        * doc/gnat_ugn/building_executable_programs_with_gnat.rst:
        Remove -gnatt and -gnatct documentation.
        * gnat_ugn.texi: Regenerate.
        * tree_in.ads, tree_in.adb, tree_io.ads, tree_io.adb,
        tree_gen.ads, tree_gen.adb, stand.adb: Remove.
        * gcc-interface/Makefile.in, gcc-interface/Make-lang.in: Remove
        references to tree_gen.o tree_in.o tree_io.o.

2020-06-03  Eric Botcazou  <ebotcazou@adacore.com>

        * opt.ads (Disable_FE_Inline): Move around.
        (Disable_FE_Inline_Always): Likewise.

2020-06-03  Eric Botcazou  <ebotcazou@adacore.com>

        * checks.adb (Is_Single_Attribute_Reference): New predicate.
        (Generate_Range_Check): Do not force the evaluation if the
        node is a single attribute reference.
        * exp_util.adb (Side_Effect_Free_Attribute): New predicate.
        (Side_Effect_Free) <N_Attribute_Reference>: Call it.
        (Remove_Side_Effects): Remove the side effects of the prefix
        for an attribute reference whose prefix is not a name.

2020-06-03  Arnaud Charlet  <charlet@adacore.com>

        * switch-c.adb (Scan_Front_End_Switches): Remove processing of
        -gnatt.
        * usage.adb (Usage): Remove mention of -gnatt.

2020-06-03  Eric Botcazou  <ebotcazou@adacore.com>

        * sinfo.ads: Minor tweaks in commentary.

2020-06-02  Alexandre Oliva  <oliva@adacore.com>

        * lib.ads (Compilation_Switches): Remove -auxbase from
        comments.
        * switch.ads (Is_Internal_GCC_Switch): Likewise.

2020-06-02  Arnaud Charlet  <charlet@adacore.com>

        * atree.ads, checks.adb, contracts.adb, debug.adb, einfo.ads,
        exp_ch3.adb, exp_util.adb, expander.ads, expander.adb,
        frontend.adb, gnat1drv.adb, itypes.adb, lib.ads, namet.ads,
        opt.adb, opt.ads, par-prag.adb, repinfo.ads, sem_aggr.adb,
        sem_aux.ads, sem_case.ads, sem_ch10.adb, sem_ch12.adb,
        sem_ch13.adb, sem_ch3.adb, sem_ch4.adb, sem_ch6.adb,
        sem_dim.adb, sem_elab.adb, sem_prag.adb, sem_prag.ads,
        sem_res.adb, sem_type.adb, sem_util.adb, sinfo.ads, stand.ads,
        tree_io.ads: Remove references to ASIS_Mode.

2020-06-02  Javier Miranda  <miranda@adacore.com>

        * exp_ch4.adb (Generate_Temporary): New subprogram of
        Discrete_Range_Check that generates a temporary to facilitate
        the C backend the code generation of the unchecked conversion
        since the size of the source type may differ from the size of
        the target type.

2020-06-02  Arnaud Charlet  <charlet@adacore.com>

        * ada_get_targ.adb: Bump copyright year.
        * adabkend.adb: Likewise.
        * adabkend.ads: Likewise.
        * adadecode.c: Likewise.
        * adadecode.h: Likewise.
        * adaint.c: Likewise.
        * adaint.h: Likewise.
        * affinity.c: Likewise.
        * ali-util.adb: Likewise.
        * ali-util.ads: Likewise.
        * ali.adb: Likewise.
        * ali.ads: Likewise.
        * alloc.ads: Likewise.
        * argv-lynxos178-raven-cert.c: Likewise.
        * argv.c: Likewise.
        * aspects.adb: Likewise.
        * aspects.ads: Likewise.
        * atree.adb: Likewise.
        * atree.ads: Likewise.
        * atree.h: Likewise.
        * aux-io.c: Likewise.
        * back_end.adb: Likewise.
        * back_end.ads: Likewise.
        * bcheck.adb: Likewise.
        * bcheck.ads: Likewise.
        * binde.adb: Likewise.
        * binde.ads: Likewise.
        * binderr.adb: Likewise.
        * binderr.ads: Likewise.
        * bindgen.adb: Likewise.
        * bindgen.ads: Likewise.
        * bindo-augmentors.adb: Likewise.
        * bindo-augmentors.ads: Likewise.
        * bindo-builders.adb: Likewise.
        * bindo-builders.ads: Likewise.
        * bindo-diagnostics.adb: Likewise.
        * bindo-diagnostics.ads: Likewise.
        * bindo-elaborators.adb: Likewise.
        * bindo-elaborators.ads: Likewise.
        * bindo-graphs.adb: Likewise.
        * bindo-graphs.ads: Likewise.
        * bindo-units.adb: Likewise.
        * bindo-units.ads: Likewise.
        * bindo-validators.adb: Likewise.
        * bindo-validators.ads: Likewise.
        * bindo-writers.adb: Likewise.
        * bindo-writers.ads: Likewise.
        * bindo.adb: Likewise.
        * bindo.ads: Likewise.
        * bindusg.adb: Likewise.
        * bindusg.ads: Likewise.
        * butil.adb: Likewise.
        * butil.ads: Likewise.
        * cal.c: Likewise.
        * casing.adb: Likewise.
        * casing.ads: Likewise.
        * ceinfo.adb: Likewise.
        * checks.adb: Likewise.
        * checks.ads: Likewise.
        * cio.c: Likewise.
        * clean.adb: Likewise.
        * clean.ads: Likewise.
        * comperr.adb: Likewise.
        * comperr.ads: Likewise.
        * contracts.adb: Likewise.
        * contracts.ads: Likewise.
        * csets.adb: Likewise.
        * csets.ads: Likewise.
        * csinfo.adb: Likewise.
        * cstand.adb: Likewise.
        * cstand.ads: Likewise.
        * cstreams.c: Likewise.
        * ctrl_c.c: Likewise.
        * debug.adb: Likewise.
        * debug.ads: Likewise.
        * debug_a.adb: Likewise.
        * debug_a.ads: Likewise.
        * einfo.adb: Likewise.
        * einfo.ads: Likewise.
        * elists.adb: Likewise.
        * elists.ads: Likewise.
        * elists.h: Likewise.
        * env.c: Likewise.
        * env.h: Likewise.
        * err_vars.ads: Likewise.
        * errno.c: Likewise.
        * errout.adb: Likewise.
        * errout.ads: Likewise.
        * erroutc.adb: Likewise.
        * erroutc.ads: Likewise.
        * errutil.adb: Likewise.
        * errutil.ads: Likewise.
        * eval_fat.adb: Likewise.
        * eval_fat.ads: Likewise.
        * exit.c: Likewise.
        * exp_aggr.adb: Likewise.
        * exp_aggr.ads: Likewise.
        * exp_atag.adb: Likewise.
        * exp_atag.ads: Likewise.
        * exp_attr.adb: Likewise.
        * exp_attr.ads: Likewise.
        * exp_cg.adb: Likewise.
        * exp_cg.ads: Likewise.
        * exp_ch10.ads: Likewise.
        * exp_ch11.adb: Likewise.
        * exp_ch11.ads: Likewise.
        * exp_ch12.adb: Likewise.
        * exp_ch12.ads: Likewise.
        * exp_ch13.adb: Likewise.
        * exp_ch13.ads: Likewise.
        * exp_ch2.adb: Likewise.
        * exp_ch2.ads: Likewise.
        * exp_ch3.adb: Likewise.
        * exp_ch3.ads: Likewise.
        * exp_ch4.adb: Likewise.
        * exp_ch4.ads: Likewise.
        * exp_ch5.adb: Likewise.
        * exp_ch5.ads: Likewise.
        * exp_ch6.adb: Likewise.
        * exp_ch6.ads: Likewise.
        * exp_ch7.adb: Likewise.
        * exp_ch7.ads: Likewise.
        * exp_ch8.adb: Likewise.
        * exp_ch8.ads: Likewise.
        * exp_ch9.adb: Likewise.
        * exp_ch9.ads: Likewise.
        * exp_code.adb: Likewise.
        * exp_code.ads: Likewise.
        * exp_dbug.adb: Likewise.
        * exp_dbug.ads: Likewise.
        * exp_disp.adb: Likewise.
        * exp_disp.ads: Likewise.
        * exp_dist.adb: Likewise.
        * exp_dist.ads: Likewise.
        * exp_fixd.adb: Likewise.
        * exp_fixd.ads: Likewise.
        * exp_imgv.adb: Likewise.
        * exp_imgv.ads: Likewise.
        * exp_intr.adb: Likewise.
        * exp_intr.ads: Likewise.
        * exp_pakd.adb: Likewise.
        * exp_pakd.ads: Likewise.
        * exp_prag.adb: Likewise.
        * exp_prag.ads: Likewise.
        * exp_sel.adb: Likewise.
        * exp_sel.ads: Likewise.
        * exp_smem.adb: Likewise.
        * exp_smem.ads: Likewise.
        * exp_spark.adb: Likewise.
        * exp_spark.ads: Likewise.
        * exp_strm.adb: Likewise.
        * exp_strm.ads: Likewise.
        * exp_tss.adb: Likewise.
        * exp_tss.ads: Likewise.
        * exp_unst.adb: Likewise.
        * exp_unst.ads: Likewise.
        * exp_util.adb: Likewise.
        * exp_util.ads: Likewise.
        * expander.adb: Likewise.
        * expander.ads: Likewise.
        * expect.c: Likewise.
        * fe.h: Likewise.
        * final.c: Likewise.
        * fmap.adb: Likewise.
        * fmap.ads: Likewise.
        * fname-sf.adb: Likewise.
        * fname-sf.ads: Likewise.
        * fname-uf.adb: Likewise.
        * fname-uf.ads: Likewise.
        * fname.adb: Likewise.
        * fname.ads: Likewise.
        * freeze.adb: Likewise.
        * freeze.ads: Likewise.
        * frontend.adb: Likewise.
        * frontend.ads: Likewise.
        * get_scos.adb: Likewise.
        * get_scos.ads: Likewise.
        * get_targ.adb: Likewise.
        * get_targ.ads: Likewise.
        * ghost.adb: Likewise.
        * ghost.ads: Likewise.
        * gnat1drv.adb: Likewise.
        * gnat1drv.ads: Likewise.
        * gnatbind.adb: Likewise.
        * gnatbind.ads: Likewise.
        * gnatchop.adb: Likewise.
        * gnatclean.adb: Likewise.
        * gnatcmd.adb: Likewise.
        * gnatcmd.ads: Likewise.
        * gnatdll.adb: Likewise.
        * gnatfind.adb: Likewise.
        * gnatkr.adb: Likewise.
        * gnatkr.ads: Likewise.
        * gnatlink.adb: Likewise.
        * gnatlink.ads: Likewise.
        * gnatls.adb: Likewise.
        * gnatls.ads: Likewise.
        * gnatmake.adb: Likewise.
        * gnatmake.ads: Likewise.
        * gnatname.adb: Likewise.
        * gnatname.ads: Likewise.
        * gnatprep.adb: Likewise.
        * gnatprep.ads: Likewise.
        * gnatvsn.adb: Likewise.
        * gnatxref.adb: Likewise.
        * gprep.adb: Likewise.
        * gprep.ads: Likewise.
        * gsocket.h: Likewise.
        * hostparm.ads: Likewise.
        * impunit.adb: Likewise.
        * impunit.ads: Likewise.
        * indepsw-aix.adb: Likewise.
        * indepsw-darwin.adb: Likewise.
        * indepsw-gnu.adb: Likewise.
        * indepsw.adb: Likewise.
        * indepsw.ads: Likewise.
        * init.c: Likewise.
        * initialize.c: Likewise.
        * inline.adb: Likewise.
        * inline.ads: Likewise.
        * itypes.adb: Likewise.
        * itypes.ads: Likewise.
        * krunch.adb: Likewise.
        * krunch.ads: Likewise.
        * layout.adb: Likewise.
        * layout.ads: Likewise.
        * lib-list.adb: Likewise.
        * lib-load.adb: Likewise.
        * lib-load.ads: Likewise.
        * lib-sort.adb: Likewise.
        * lib-util.adb: Likewise.
        * lib-util.ads: Likewise.
        * lib-writ.adb: Likewise.
        * lib-writ.ads: Likewise.
        * lib-xref-spark_specific.adb: Likewise.
        * lib-xref.adb: Likewise.
        * lib-xref.ads: Likewise.
        * lib.adb: Likewise.
        * lib.ads: Likewise.
        * libgnarl/a-astaco.adb: Likewise.
        * libgnarl/a-dispat.adb: Likewise.
        * libgnarl/a-dynpri.adb: Likewise.
        * libgnarl/a-etgrbu.ads: Likewise.
        * libgnarl/a-exetim__darwin.adb: Likewise.
        * libgnarl/a-exetim__default.ads: Likewise.
        * libgnarl/a-exetim__mingw.adb: Likewise.
        * libgnarl/a-exetim__mingw.ads: Likewise.
        * libgnarl/a-exetim__posix.adb: Likewise.
        * libgnarl/a-interr.adb: Likewise.
        * libgnarl/a-interr.ads: Likewise.
        * libgnarl/a-intnam.ads: Likewise.
        * libgnarl/a-intnam__aix.ads: Likewise.
        * libgnarl/a-intnam__darwin.ads: Likewise.
        * libgnarl/a-intnam__dragonfly.ads: Likewise.
        * libgnarl/a-intnam__dummy.ads: Likewise.
        * libgnarl/a-intnam__freebsd.ads: Likewise.
        * libgnarl/a-intnam__hpux.ads: Likewise.
        * libgnarl/a-intnam__linux.ads: Likewise.
        * libgnarl/a-intnam__lynxos.ads: Likewise.
        * libgnarl/a-intnam__mingw.ads: Likewise.
        * libgnarl/a-intnam__qnx.ads: Likewise.
        * libgnarl/a-intnam__rtems.ads: Likewise.
        * libgnarl/a-intnam__solaris.ads: Likewise.
        * libgnarl/a-intnam__vxworks.ads: Likewise.
        * libgnarl/a-reatim.adb: Likewise.
        * libgnarl/a-reatim.ads: Likewise.
        * libgnarl/a-retide.adb: Likewise.
        * libgnarl/a-retide.ads: Likewise.
        * libgnarl/a-rttiev.adb: Likewise.
        * libgnarl/a-rttiev.ads: Likewise.
        * libgnarl/a-synbar.adb: Likewise.
        * libgnarl/a-synbar.ads: Likewise.
        * libgnarl/a-synbar__posix.adb: Likewise.
        * libgnarl/a-synbar__posix.ads: Likewise.
        * libgnarl/a-sytaco.adb: Likewise.
        * libgnarl/a-sytaco.ads: Likewise.
        * libgnarl/a-tasatt.adb: Likewise.
        * libgnarl/a-tasatt.ads: Likewise.
        * libgnarl/a-taside.adb: Likewise.
        * libgnarl/a-taside.ads: Likewise.
        * libgnarl/a-taster.adb: Likewise.
        * libgnarl/g-boubuf.adb: Likewise.
        * libgnarl/g-boubuf.ads: Likewise.
        * libgnarl/g-boumai.ads: Likewise.
        * libgnarl/g-semaph.adb: Likewise.
        * libgnarl/g-semaph.ads: Likewise.
        * libgnarl/g-signal.adb: Likewise.
        * libgnarl/g-signal.ads: Likewise.
        * libgnarl/g-tastus.ads: Likewise.
        * libgnarl/g-thread.adb: Likewise.
        * libgnarl/g-thread.ads: Likewise.
        * libgnarl/i-vxinco.adb: Likewise.
        * libgnarl/i-vxinco.ads: Likewise.
        * libgnarl/s-inmaop.ads: Likewise.
        * libgnarl/s-inmaop__dummy.adb: Likewise.
        * libgnarl/s-inmaop__posix.adb: Likewise.
        * libgnarl/s-inmaop__vxworks.adb: Likewise.
        * libgnarl/s-interr.adb: Likewise.
        * libgnarl/s-interr.ads: Likewise.
        * libgnarl/s-interr__dummy.adb: Likewise.
        * libgnarl/s-interr__hwint.adb: Likewise.
        * libgnarl/s-interr__sigaction.adb: Likewise.
        * libgnarl/s-interr__vxworks.adb: Likewise.
        * libgnarl/s-intman.ads: Likewise.
        * libgnarl/s-intman__android.adb: Likewise.
        * libgnarl/s-intman__dummy.adb: Likewise.
        * libgnarl/s-intman__lynxos.adb: Likewise.
        * libgnarl/s-intman__mingw.adb: Likewise.
        * libgnarl/s-intman__posix.adb: Likewise.
        * libgnarl/s-intman__qnx.adb: Likewise.
        * libgnarl/s-intman__solaris.adb: Likewise.
        * libgnarl/s-intman__susv3.adb: Likewise.
        * libgnarl/s-intman__vxworks.adb: Likewise.
        * libgnarl/s-intman__vxworks.ads: Likewise.
        * libgnarl/s-linux.ads: Likewise.
        * libgnarl/s-linux__alpha.ads: Likewise.
        * libgnarl/s-linux__android.ads: Likewise.
        * libgnarl/s-linux__hppa.ads: Likewise.
        * libgnarl/s-linux__mips.ads: Likewise.
        * libgnarl/s-linux__riscv.ads: Likewise.
        * libgnarl/s-linux__sparc.ads: Likewise.
        * libgnarl/s-linux__x32.ads: Likewise.
        * libgnarl/s-mudido.adb: Likewise.
        * libgnarl/s-mudido__affinity.adb: Likewise.
        * libgnarl/s-osinte__aix.adb: Likewise.
        * libgnarl/s-osinte__aix.ads: Likewise.
        * libgnarl/s-osinte__android.adb: Likewise.
        * libgnarl/s-osinte__android.ads: Likewise.
        * libgnarl/s-osinte__darwin.adb: Likewise.
        * libgnarl/s-osinte__darwin.ads: Likewise.
        * libgnarl/s-osinte__dragonfly.adb: Likewise.
        * libgnarl/s-osinte__dragonfly.ads: Likewise.
        * libgnarl/s-osinte__dummy.ads: Likewise.
        * libgnarl/s-osinte__freebsd.adb: Likewise.
        * libgnarl/s-osinte__freebsd.ads: Likewise.
        * libgnarl/s-osinte__gnu.adb: Likewise.
        * libgnarl/s-osinte__gnu.ads: Likewise.
        * libgnarl/s-osinte__hpux-dce.adb: Likewise.
        * libgnarl/s-osinte__hpux-dce.ads: Likewise.
        * libgnarl/s-osinte__hpux.ads: Likewise.
        * libgnarl/s-osinte__kfreebsd-gnu.ads: Likewise.
        * libgnarl/s-osinte__linux.ads: Likewise.
        * libgnarl/s-osinte__lynxos178.adb: Likewise.
        * libgnarl/s-osinte__lynxos178e.ads: Likewise.
        * libgnarl/s-osinte__mingw.ads: Likewise.
        * libgnarl/s-osinte__posix.adb: Likewise.
        * libgnarl/s-osinte__qnx.adb: Likewise.
        * libgnarl/s-osinte__qnx.ads: Likewise.
        * libgnarl/s-osinte__rtems.adb: Likewise.
        * libgnarl/s-osinte__rtems.ads: Likewise.
        * libgnarl/s-osinte__solaris.adb: Likewise.
        * libgnarl/s-osinte__solaris.ads: Likewise.
        * libgnarl/s-osinte__vxworks.adb: Likewise.
        * libgnarl/s-osinte__vxworks.ads: Likewise.
        * libgnarl/s-osinte__x32.adb: Likewise.
        * libgnarl/s-proinf.adb: Likewise.
        * libgnarl/s-proinf.ads: Likewise.
        * libgnarl/s-qnx.ads: Likewise.
        * libgnarl/s-solita.adb: Likewise.
        * libgnarl/s-solita.ads: Likewise.
        * libgnarl/s-stusta.adb: Likewise.
        * libgnarl/s-stusta.ads: Likewise.
        * libgnarl/s-taasde.adb: Likewise.
        * libgnarl/s-taasde.ads: Likewise.
        * libgnarl/s-tadeca.adb: Likewise.
        * libgnarl/s-tadeca.ads: Likewise.
        * libgnarl/s-tadert.adb: Likewise.
        * libgnarl/s-tadert.ads: Likewise.
        * libgnarl/s-taenca.adb: Likewise.
        * libgnarl/s-taenca.ads: Likewise.
        * libgnarl/s-taprob.adb: Likewise.
        * libgnarl/s-taprob.ads: Likewise.
        * libgnarl/s-taprop.ads: Likewise.
        * libgnarl/s-taprop__dummy.adb: Likewise.
        * libgnarl/s-taprop__hpux-dce.adb: Likewise.
        * libgnarl/s-taprop__linux.adb: Likewise.
        * libgnarl/s-taprop__mingw.adb: Likewise.
        * libgnarl/s-taprop__posix.adb: Likewise.
        * libgnarl/s-taprop__qnx.adb: Likewise.
        * libgnarl/s-taprop__solaris.adb: Likewise.
        * libgnarl/s-taprop__vxworks.adb: Likewise.
        * libgnarl/s-tarest.adb: Likewise.
        * libgnarl/s-tarest.ads: Likewise.
        * libgnarl/s-tasdeb.adb: Likewise.
        * libgnarl/s-tasdeb.ads: Likewise.
        * libgnarl/s-tasinf.adb: Likewise.
        * libgnarl/s-tasinf.ads: Likewise.
        * libgnarl/s-tasinf__linux.adb: Likewise.
        * libgnarl/s-tasinf__linux.ads: Likewise.
        * libgnarl/s-tasinf__mingw.adb: Likewise.
        * libgnarl/s-tasinf__mingw.ads: Likewise.
        * libgnarl/s-tasinf__solaris.adb: Likewise.
        * libgnarl/s-tasinf__solaris.ads: Likewise.
        * libgnarl/s-tasinf__vxworks.ads: Likewise.
        * libgnarl/s-tasini.adb: Likewise.
        * libgnarl/s-tasini.ads: Likewise.
        * libgnarl/s-taskin.adb: Likewise.
        * libgnarl/s-taskin.ads: Likewise.
        * libgnarl/s-taspri__dummy.ads: Likewise.
        * libgnarl/s-taspri__hpux-dce.ads: Likewise.
        * libgnarl/s-taspri__lynxos.ads: Likewise.
        * libgnarl/s-taspri__mingw.ads: Likewise.
        * libgnarl/s-taspri__posix-noaltstack.ads: Likewise.
        * libgnarl/s-taspri__posix.ads: Likewise.
        * libgnarl/s-taspri__solaris.ads: Likewise.
        * libgnarl/s-taspri__vxworks.ads: Likewise.
        * libgnarl/s-tasque.adb: Likewise.
        * libgnarl/s-tasque.ads: Likewise.
        * libgnarl/s-tasren.adb: Likewise.
        * libgnarl/s-tasren.ads: Likewise.
        * libgnarl/s-tasres.ads: Likewise.
        * libgnarl/s-tassta.adb: Likewise.
        * libgnarl/s-tassta.ads: Likewise.
        * libgnarl/s-tasuti.adb: Likewise.
        * libgnarl/s-tasuti.ads: Likewise.
        * libgnarl/s-tataat.adb: Likewise.
        * libgnarl/s-tataat.ads: Likewise.
        * libgnarl/s-tpinop.adb: Likewise.
        * libgnarl/s-tpinop.ads: Likewise.
        * libgnarl/s-tpoaal.adb: Likewise.
        * libgnarl/s-tpoben.adb: Likewise.
        * libgnarl/s-tpoben.ads: Likewise.
        * libgnarl/s-tpobmu.adb: Likewise.
        * libgnarl/s-tpobmu.ads: Likewise.
        * libgnarl/s-tpobop.adb: Likewise.
        * libgnarl/s-tpobop.ads: Likewise.
        * libgnarl/s-tpopmo.adb: Likewise.
        * libgnarl/s-tpopsp__posix-foreign.adb: Likewise.
        * libgnarl/s-tpopsp__posix.adb: Likewise.
        * libgnarl/s-tpopsp__solaris.adb: Likewise.
        * libgnarl/s-tpopsp__tls.adb: Likewise.
        * libgnarl/s-tpopsp__vxworks-rtp.adb: Likewise.
        * libgnarl/s-tpopsp__vxworks-tls.adb: Likewise.
        * libgnarl/s-tpopsp__vxworks.adb: Likewise.
        * libgnarl/s-tporft.adb: Likewise.
        * libgnarl/s-tposen.adb: Likewise.
        * libgnarl/s-tposen.ads: Likewise.
        * libgnarl/s-vxwext.adb: Likewise.
        * libgnarl/s-vxwext.ads: Likewise.
        * libgnarl/s-vxwext__kernel-smp.adb: Likewise.
        * libgnarl/s-vxwext__kernel.adb: Likewise.
        * libgnarl/s-vxwext__kernel.ads: Likewise.
        * libgnarl/s-vxwext__noints.adb: Likewise.
        * libgnarl/s-vxwext__rtp-smp.adb: Likewise.
        * libgnarl/s-vxwext__rtp.adb: Likewise.
        * libgnarl/s-vxwext__rtp.ads: Likewise.
        * libgnarl/s-vxwext__vthreads.ads: Likewise.
        * libgnarl/s-vxwork__aarch64.ads: Likewise.
        * libgnarl/s-vxwork__arm.ads: Likewise.
        * libgnarl/s-vxwork__ppc.ads: Likewise.
        * libgnarl/s-vxwork__x86.ads: Likewise.
        * libgnarl/thread.c: Likewise.
        * libgnat/a-assert.adb: Likewise.
        * libgnat/a-assert.ads: Likewise.
        * libgnat/a-btgbso.adb: Likewise.
        * libgnat/a-btgbso.ads: Likewise.
        * libgnat/a-calari.adb: Likewise.
        * libgnat/a-calari.ads: Likewise.
        * libgnat/a-calcon.adb: Likewise.
        * libgnat/a-calcon.ads: Likewise.
        * libgnat/a-caldel.adb: Likewise.
        * libgnat/a-caldel.ads: Likewise.
        * libgnat/a-calend.adb: Likewise.
        * libgnat/a-calend.ads: Likewise.
        * libgnat/a-calfor.adb: Likewise.
        * libgnat/a-calfor.ads: Likewise.
        * libgnat/a-catizo.adb: Likewise.
        * libgnat/a-cbdlli.adb: Likewise.
        * libgnat/a-cbdlli.ads: Likewise.
        * libgnat/a-cbhama.adb: Likewise.
        * libgnat/a-cbhama.ads: Likewise.
        * libgnat/a-cbhase.adb: Likewise.
        * libgnat/a-cbhase.ads: Likewise.
        * libgnat/a-cbmutr.adb: Likewise.
        * libgnat/a-cbmutr.ads: Likewise.
        * libgnat/a-cborma.adb: Likewise.
        * libgnat/a-cborma.ads: Likewise.
        * libgnat/a-cborse.adb: Likewise.
        * libgnat/a-cborse.ads: Likewise.
        * libgnat/a-cbprqu.adb: Likewise.
        * libgnat/a-cbprqu.ads: Likewise.
        * libgnat/a-cbsyqu.adb: Likewise.
        * libgnat/a-cbsyqu.ads: Likewise.
        * libgnat/a-cdlili.adb: Likewise.
        * libgnat/a-cdlili.ads: Likewise.
        * libgnat/a-cfdlli.adb: Likewise.
        * libgnat/a-cfdlli.ads: Likewise.
        * libgnat/a-cfhama.adb: Likewise.
        * libgnat/a-cfhama.ads: Likewise.
        * libgnat/a-cfhase.adb: Likewise.
        * libgnat/a-cfhase.ads: Likewise.
        * libgnat/a-cfinve.adb: Likewise.
        * libgnat/a-cfinve.ads: Likewise.
        * libgnat/a-cforma.adb: Likewise.
        * libgnat/a-cforma.ads: Likewise.
        * libgnat/a-cforse.adb: Likewise.
        * libgnat/a-cforse.ads: Likewise.
        * libgnat/a-cgaaso.adb: Likewise.
        * libgnat/a-cgaaso.ads: Likewise.
        * libgnat/a-cgarso.adb: Likewise.
        * libgnat/a-cgcaso.adb: Likewise.
        * libgnat/a-chacon.adb: Likewise.
        * libgnat/a-chacon.ads: Likewise.
        * libgnat/a-chahan.adb: Likewise.
        * libgnat/a-chahan.ads: Likewise.
        * libgnat/a-chlat9.ads: Likewise.
        * libgnat/a-chtgbk.adb: Likewise.
        * libgnat/a-chtgbk.ads: Likewise.
        * libgnat/a-chtgbo.adb: Likewise.
        * libgnat/a-chtgbo.ads: Likewise.
        * libgnat/a-chtgke.adb: Likewise.
        * libgnat/a-chtgke.ads: Likewise.
        * libgnat/a-chtgop.adb: Likewise.
        * libgnat/a-chtgop.ads: Likewise.
        * libgnat/a-chzla1.ads: Likewise.
        * libgnat/a-chzla9.ads: Likewise.
        * libgnat/a-cidlli.adb: Likewise.
        * libgnat/a-cidlli.ads: Likewise.
        * libgnat/a-cihama.adb: Likewise.
        * libgnat/a-cihama.ads: Likewise.
        * libgnat/a-cihase.adb: Likewise.
        * libgnat/a-cihase.ads: Likewise.
        * libgnat/a-cimutr.adb: Likewise.
        * libgnat/a-cimutr.ads: Likewise.
        * libgnat/a-ciorma.adb: Likewise.
        * libgnat/a-ciorma.ads: Likewise.
        * libgnat/a-ciormu.adb: Likewise.
        * libgnat/a-ciormu.ads: Likewise.
        * libgnat/a-ciorse.adb: Likewise.
        * libgnat/a-ciorse.ads: Likewise.
        * libgnat/a-clrefi.adb: Likewise.
        * libgnat/a-clrefi.ads: Likewise.
        * libgnat/a-coboho.adb: Likewise.
        * libgnat/a-coboho.ads: Likewise.
        * libgnat/a-cobove.adb: Likewise.
        * libgnat/a-cobove.ads: Likewise.
        * libgnat/a-cofove.adb: Likewise.
        * libgnat/a-cofove.ads: Likewise.
        * libgnat/a-cofuba.adb: Likewise.
        * libgnat/a-cofuba.ads: Likewise.
        * libgnat/a-cofuma.adb: Likewise.
        * libgnat/a-cofuma.ads: Likewise.
        * libgnat/a-cofuse.adb: Likewise.
        * libgnat/a-cofuse.ads: Likewise.
        * libgnat/a-cofuve.adb: Likewise.
        * libgnat/a-cofuve.ads: Likewise.
        * libgnat/a-cogeso.adb: Likewise.
        * libgnat/a-cogeso.ads: Likewise.
        * libgnat/a-cohama.adb: Likewise.
        * libgnat/a-cohama.ads: Likewise.
        * libgnat/a-cohase.adb: Likewise.
        * libgnat/a-cohase.ads: Likewise.
        * libgnat/a-cohata.ads: Likewise.
        * libgnat/a-coinho.adb: Likewise.
        * libgnat/a-coinho.ads: Likewise.
        * libgnat/a-coinho__shared.adb: Likewise.
        * libgnat/a-coinho__shared.ads: Likewise.
        * libgnat/a-coinve.adb: Likewise.
        * libgnat/a-coinve.ads: Likewise.
        * libgnat/a-colien.adb: Likewise.
        * libgnat/a-colien.ads: Likewise.
        * libgnat/a-colire.adb: Likewise.
        * libgnat/a-colire.ads: Likewise.
        * libgnat/a-comlin.adb: Likewise.
        * libgnat/a-comlin.ads: Likewise.
        * libgnat/a-comutr.adb: Likewise.
        * libgnat/a-comutr.ads: Likewise.
        * libgnat/a-conhel.adb: Likewise.
        * libgnat/a-conhel.ads: Likewise.
        * libgnat/a-convec.adb: Likewise.
        * libgnat/a-convec.ads: Likewise.
        * libgnat/a-coorma.adb: Likewise.
        * libgnat/a-coorma.ads: Likewise.
        * libgnat/a-coormu.adb: Likewise.
        * libgnat/a-coormu.ads: Likewise.
        * libgnat/a-coorse.adb: Likewise.
        * libgnat/a-coorse.ads: Likewise.
        * libgnat/a-coprnu.adb: Likewise.
        * libgnat/a-coprnu.ads: Likewise.
        * libgnat/a-crbltr.ads: Likewise.
        * libgnat/a-crbtgk.adb: Likewise.
        * libgnat/a-crbtgk.ads: Likewise.
        * libgnat/a-crbtgo.adb: Likewise.
        * libgnat/a-crbtgo.ads: Likewise.
        * libgnat/a-crdlli.adb: Likewise.
        * libgnat/a-crdlli.ads: Likewise.
        * libgnat/a-csquin.ads: Likewise.
        * libgnat/a-cuprqu.adb: Likewise.
        * libgnat/a-cuprqu.ads: Likewise.
        * libgnat/a-cusyqu.adb: Likewise.
        * libgnat/a-cusyqu.ads: Likewise.
        * libgnat/a-cwila1.ads: Likewise.
        * libgnat/a-cwila9.ads: Likewise.
        * libgnat/a-decima.adb: Likewise.
        * libgnat/a-decima.ads: Likewise.
        * libgnat/a-dhfina.adb: Likewise.
        * libgnat/a-dhfina.ads: Likewise.
        * libgnat/a-diocst.adb: Likewise.
        * libgnat/a-diocst.ads: Likewise.
        * libgnat/a-direct.adb: Likewise.
        * libgnat/a-direct.ads: Likewise.
        * libgnat/a-direio.adb: Likewise.
        * libgnat/a-direio.ads: Likewise.
        * libgnat/a-dirval.adb: Likewise.
        * libgnat/a-dirval.ads: Likewise.
        * libgnat/a-dirval__mingw.adb: Likewise.
        * libgnat/a-einuoc.adb: Likewise.
        * libgnat/a-einuoc.ads: Likewise.
        * libgnat/a-elchha.adb: Likewise.
        * libgnat/a-elchha.ads: Likewise.
        * libgnat/a-elchha__vxworks-ppc-full.adb: Likewise.
        * libgnat/a-envvar.adb: Likewise.
        * libgnat/a-excach.adb: Likewise.
        * libgnat/a-except.adb: Likewise.
        * libgnat/a-except.ads: Likewise.
        * libgnat/a-excpol.adb: Likewise.
        * libgnat/a-excpol__abort.adb: Likewise.
        * libgnat/a-exctra.adb: Likewise.
        * libgnat/a-exctra.ads: Likewise.
        * libgnat/a-exexda.adb: Likewise.
        * libgnat/a-exexpr.adb: Likewise.
        * libgnat/a-exextr.adb: Likewise.
        * libgnat/a-exstat.adb: Likewise.
        * libgnat/a-finali.adb: Likewise.
        * libgnat/a-finali.ads: Likewise.
        * libgnat/a-locale.adb: Likewise.
        * libgnat/a-locale.ads: Likewise.
        * libgnat/a-nbnbin.adb: Likewise.
        * libgnat/a-nbnbin__gmp.adb: Likewise.
        * libgnat/a-nbnbre.adb: Likewise.
        * libgnat/a-ngcefu.adb: Likewise.
        * libgnat/a-ngcoar.adb: Likewise.
        * libgnat/a-ngcoty.adb: Likewise.
        * libgnat/a-ngcoty.ads: Likewise.
        * libgnat/a-ngelfu.adb: Likewise.
        * libgnat/a-ngelfu.ads: Likewise.
        * libgnat/a-ngrear.adb: Likewise.
        * libgnat/a-ngrear.ads: Likewise.
        * libgnat/a-nudira.adb: Likewise.
        * libgnat/a-nudira.ads: Likewise.
        * libgnat/a-nuflra.adb: Likewise.
        * libgnat/a-nuflra.ads: Likewise.
        * libgnat/a-numaux.ads: Likewise.
        * libgnat/a-numaux__darwin.adb: Likewise.
        * libgnat/a-numaux__darwin.ads: Likewise.
        * libgnat/a-numaux__libc-x86.ads: Likewise.
        * libgnat/a-numaux__vxworks.ads: Likewise.
        * libgnat/a-numaux__x86.adb: Likewise.
        * libgnat/a-numaux__x86.ads: Likewise.
        * libgnat/a-rbtgbk.adb: Likewise.
        * libgnat/a-rbtgbk.ads: Likewise.
        * libgnat/a-rbtgbo.adb: Likewise.
        * libgnat/a-rbtgbo.ads: Likewise.
        * libgnat/a-rbtgso.adb: Likewise.
        * libgnat/a-rbtgso.ads: Likewise.
        * libgnat/a-sbecin.adb: Likewise.
        * libgnat/a-sbecin.ads: Likewise.
        * libgnat/a-sbhcin.adb: Likewise.
        * libgnat/a-sbhcin.ads: Likewise.
        * libgnat/a-sblcin.adb: Likewise.
        * libgnat/a-sblcin.ads: Likewise.
        * libgnat/a-secain.adb: Likewise.
        * libgnat/a-secain.ads: Likewise.
        * libgnat/a-sequio.adb: Likewise.
        * libgnat/a-sequio.ads: Likewise.
        * libgnat/a-sfecin.ads: Likewise.
        * libgnat/a-sfhcin.ads: Likewise.
        * libgnat/a-sflcin.ads: Likewise.
        * libgnat/a-shcain.adb: Likewise.
        * libgnat/a-shcain.ads: Likewise.
        * libgnat/a-siocst.adb: Likewise.
        * libgnat/a-siocst.ads: Likewise.
        * libgnat/a-slcain.adb: Likewise.
        * libgnat/a-slcain.ads: Likewise.
        * libgnat/a-ssicst.adb: Likewise.
        * libgnat/a-ssicst.ads: Likewise.
        * libgnat/a-stboha.adb: Likewise.
        * libgnat/a-stmaco.ads: Likewise.
        * libgnat/a-storio.adb: Likewise.
        * libgnat/a-strbou.adb: Likewise.
        * libgnat/a-strbou.ads: Likewise.
        * libgnat/a-stream.adb: Likewise.
        * libgnat/a-stream.ads: Likewise.
        * libgnat/a-strfix.adb: Likewise.
        * libgnat/a-strhas.adb: Likewise.
        * libgnat/a-strmap.adb: Likewise.
        * libgnat/a-strmap.ads: Likewise.
        * libgnat/a-strsea.adb: Likewise.
        * libgnat/a-strsea.ads: Likewise.
        * libgnat/a-strsup.adb: Likewise.
        * libgnat/a-strsup.ads: Likewise.
        * libgnat/a-strunb.adb: Likewise.
        * libgnat/a-strunb.ads: Likewise.
        * libgnat/a-strunb__shared.adb: Likewise.
        * libgnat/a-strunb__shared.ads: Likewise.
        * libgnat/a-ststio.adb: Likewise.
        * libgnat/a-ststio.ads: Likewise.
        * libgnat/a-stunau.adb: Likewise.
        * libgnat/a-stunau.ads: Likewise.
        * libgnat/a-stunau__shared.adb: Likewise.
        * libgnat/a-stunha.adb: Likewise.
        * libgnat/a-stuten.adb: Likewise.
        * libgnat/a-stwibo.adb: Likewise.
        * libgnat/a-stwibo.ads: Likewise.
        * libgnat/a-stwifi.adb: Likewise.
        * libgnat/a-stwiha.adb: Likewise.
        * libgnat/a-stwima.adb: Likewise.
        * libgnat/a-stwima.ads: Likewise.
        * libgnat/a-stwise.adb: Likewise.
        * libgnat/a-stwise.ads: Likewise.
        * libgnat/a-stwisu.adb: Likewise.
        * libgnat/a-stwisu.ads: Likewise.
        * libgnat/a-stwiun.adb: Likewise.
        * libgnat/a-stwiun.ads: Likewise.
        * libgnat/a-stwiun__shared.adb: Likewise.
        * libgnat/a-stwiun__shared.ads: Likewise.
        * libgnat/a-stzbou.adb: Likewise.
        * libgnat/a-stzbou.ads: Likewise.
        * libgnat/a-stzfix.adb: Likewise.
        * libgnat/a-stzhas.adb: Likewise.
        * libgnat/a-stzmap.adb: Likewise.
        * libgnat/a-stzmap.ads: Likewise.
        * libgnat/a-stzsea.adb: Likewise.
        * libgnat/a-stzsea.ads: Likewise.
        * libgnat/a-stzsup.adb: Likewise.
        * libgnat/a-stzsup.ads: Likewise.
        * libgnat/a-stzunb.adb: Likewise.
        * libgnat/a-stzunb.ads: Likewise.
        * libgnat/a-stzunb__shared.adb: Likewise.
        * libgnat/a-stzunb__shared.ads: Likewise.
        * libgnat/a-suecin.adb: Likewise.
        * libgnat/a-suecin.ads: Likewise.
        * libgnat/a-suenco.adb: Likewise.
        * libgnat/a-suenst.adb: Likewise.
        * libgnat/a-suewst.adb: Likewise.
        * libgnat/a-suezst.adb: Likewise.
        * libgnat/a-suhcin.adb: Likewise.
        * libgnat/a-suhcin.ads: Likewise.
        * libgnat/a-sulcin.adb: Likewise.
        * libgnat/a-sulcin.ads: Likewise.
        * libgnat/a-suteio.adb: Likewise.
        * libgnat/a-suteio.ads: Likewise.
        * libgnat/a-suteio__shared.adb: Likewise.
        * libgnat/a-swbwha.adb: Likewise.
        * libgnat/a-swmwco.ads: Likewise.
        * libgnat/a-swunau.adb: Likewise.
        * libgnat/a-swunau.ads: Likewise.
        * libgnat/a-swunau__shared.adb: Likewise.
        * libgnat/a-swuwha.adb: Likewise.
        * libgnat/a-swuwti.adb: Likewise.
        * libgnat/a-swuwti.ads: Likewise.
        * libgnat/a-swuwti__shared.adb: Likewise.
        * libgnat/a-szbzha.adb: Likewise.
        * libgnat/a-szmzco.ads: Likewise.
        * libgnat/a-szunau.adb: Likewise.
        * libgnat/a-szunau.ads: Likewise.
        * libgnat/a-szunau__shared.adb: Likewise.
        * libgnat/a-szuzha.adb: Likewise.
        * libgnat/a-szuzti.adb: Likewise.
        * libgnat/a-szuzti.ads: Likewise.
        * libgnat/a-szuzti__shared.adb: Likewise.
        * libgnat/a-tags.adb: Likewise.
        * libgnat/a-tags.ads: Likewise.
        * libgnat/a-teioed.adb: Likewise.
        * libgnat/a-teioed.ads: Likewise.
        * libgnat/a-textio.adb: Likewise.
        * libgnat/a-textio.ads: Likewise.
        * libgnat/a-tiboio.adb: Likewise.
        * libgnat/a-ticoau.adb: Likewise.
        * libgnat/a-ticoau.ads: Likewise.
        * libgnat/a-ticoio.adb: Likewise.
        * libgnat/a-ticoio.ads: Likewise.
        * libgnat/a-tideau.adb: Likewise.
        * libgnat/a-tideau.ads: Likewise.
        * libgnat/a-tideio.adb: Likewise.
        * libgnat/a-tideio.ads: Likewise.
        * libgnat/a-tienau.adb: Likewise.
        * libgnat/a-tienau.ads: Likewise.
        * libgnat/a-tienio.adb: Likewise.
        * libgnat/a-tifiio.adb: Likewise.
        * libgnat/a-tiflau.adb: Likewise.
        * libgnat/a-tiflau.ads: Likewise.
        * libgnat/a-tiflio.adb: Likewise.
        * libgnat/a-tiflio.ads: Likewise.
        * libgnat/a-tigeau.adb: Likewise.
        * libgnat/a-tigeau.ads: Likewise.
        * libgnat/a-tigeli.adb: Likewise.
        * libgnat/a-tiinau.adb: Likewise.
        * libgnat/a-tiinau.ads: Likewise.
        * libgnat/a-tiinio.adb: Likewise.
        * libgnat/a-tiinio.ads: Likewise.
        * libgnat/a-timoau.adb: Likewise.
        * libgnat/a-timoau.ads: Likewise.
        * libgnat/a-timoio.adb: Likewise.
        * libgnat/a-timoio.ads: Likewise.
        * libgnat/a-tiocst.adb: Likewise.
        * libgnat/a-tiocst.ads: Likewise.
        * libgnat/a-tirsfi.adb: Likewise.
        * libgnat/a-tirsfi.ads: Likewise.
        * libgnat/a-titest.adb: Likewise.
        * libgnat/a-undesu.adb: Likewise.
        * libgnat/a-wichha.adb: Likewise.
        * libgnat/a-wichun.adb: Likewise.
        * libgnat/a-wichun.ads: Likewise.
        * libgnat/a-witeio.adb: Likewise.
        * libgnat/a-witeio.ads: Likewise.
        * libgnat/a-wrstfi.adb: Likewise.
        * libgnat/a-wrstfi.ads: Likewise.
        * libgnat/a-wtcoau.adb: Likewise.
        * libgnat/a-wtcoau.ads: Likewise.
        * libgnat/a-wtcoio.adb: Likewise.
        * libgnat/a-wtcstr.adb: Likewise.
        * libgnat/a-wtcstr.ads: Likewise.
        * libgnat/a-wtdeau.adb: Likewise.
        * libgnat/a-wtdeau.ads: Likewise.
        * libgnat/a-wtdeio.adb: Likewise.
        * libgnat/a-wtedit.adb: Likewise.
        * libgnat/a-wtedit.ads: Likewise.
        * libgnat/a-wtenau.adb: Likewise.
        * libgnat/a-wtenau.ads: Likewise.
        * libgnat/a-wtenio.adb: Likewise.
        * libgnat/a-wtfiio.adb: Likewise.
        * libgnat/a-wtflau.adb: Likewise.
        * libgnat/a-wtflau.ads: Likewise.
        * libgnat/a-wtflio.adb: Likewise.
        * libgnat/a-wtgeau.adb: Likewise.
        * libgnat/a-wtgeau.ads: Likewise.
        * libgnat/a-wtinau.adb: Likewise.
        * libgnat/a-wtinau.ads: Likewise.
        * libgnat/a-wtinio.adb: Likewise.
        * libgnat/a-wtmoau.adb: Likewise.
        * libgnat/a-wtmoau.ads: Likewise.
        * libgnat/a-wtmoio.adb: Likewise.
        * libgnat/a-wtmoio.ads: Likewise.
        * libgnat/a-wttest.adb: Likewise.
        * libgnat/a-wwboio.adb: Likewise.
        * libgnat/a-zchhan.adb: Likewise.
        * libgnat/a-zchuni.adb: Likewise.
        * libgnat/a-zchuni.ads: Likewise.
        * libgnat/a-zrstfi.adb: Likewise.
        * libgnat/a-zrstfi.ads: Likewise.
        * libgnat/a-ztcoau.adb: Likewise.
        * libgnat/a-ztcoio.adb: Likewise.
        * libgnat/a-ztcstr.adb: Likewise.
        * libgnat/a-ztcstr.ads: Likewise.
        * libgnat/a-ztdeau.adb: Likewise.
        * libgnat/a-ztdeau.ads: Likewise.
        * libgnat/a-ztdeio.adb: Likewise.
        * libgnat/a-ztedit.adb: Likewise.
        * libgnat/a-ztedit.ads: Likewise.
        * libgnat/a-ztenau.adb: Likewise.
        * libgnat/a-ztenau.ads: Likewise.
        * libgnat/a-ztenio.adb: Likewise.
        * libgnat/a-ztexio.adb: Likewise.
        * libgnat/a-ztexio.ads: Likewise.
        * libgnat/a-ztfiio.adb: Likewise.
        * libgnat/a-ztflau.adb: Likewise.
        * libgnat/a-ztflau.ads: Likewise.
        * libgnat/a-ztflio.adb: Likewise.
        * libgnat/a-ztgeau.adb: Likewise.
        * libgnat/a-ztgeau.ads: Likewise.
        * libgnat/a-ztinau.adb: Likewise.
        * libgnat/a-ztinau.ads: Likewise.
        * libgnat/a-ztinio.adb: Likewise.
        * libgnat/a-ztmoau.adb: Likewise.
        * libgnat/a-ztmoau.ads: Likewise.
        * libgnat/a-ztmoio.adb: Likewise.
        * libgnat/a-zttest.adb: Likewise.
        * libgnat/a-zzboio.adb: Likewise.
        * libgnat/g-allein.ads: Likewise.
        * libgnat/g-alleve.adb: Likewise.
        * libgnat/g-alleve.ads: Likewise.
        * libgnat/g-alleve__hard.adb: Likewise.
        * libgnat/g-alleve__hard.ads: Likewise.
        * libgnat/g-altcon.adb: Likewise.
        * libgnat/g-altcon.ads: Likewise.
        * libgnat/g-altive.ads: Likewise.
        * libgnat/g-alveop.adb: Likewise.
        * libgnat/g-alveop.ads: Likewise.
        * libgnat/g-alvety.ads: Likewise.
        * libgnat/g-alvevi.ads: Likewise.
        * libgnat/g-arrspl.adb: Likewise.
        * libgnat/g-arrspl.ads: Likewise.
        * libgnat/g-awk.adb: Likewise.
        * libgnat/g-awk.ads: Likewise.
        * libgnat/g-binenv.adb: Likewise.
        * libgnat/g-binenv.ads: Likewise.
        * libgnat/g-brapre.ads: Likewise.
        * libgnat/g-bubsor.adb: Likewise.
        * libgnat/g-bubsor.ads: Likewise.
        * libgnat/g-busora.adb: Likewise.
        * libgnat/g-busora.ads: Likewise.
        * libgnat/g-busorg.adb: Likewise.
        * libgnat/g-busorg.ads: Likewise.
        * libgnat/g-byorma.adb: Likewise.
        * libgnat/g-byorma.ads: Likewise.
        * libgnat/g-bytswa.adb: Likewise.
        * libgnat/g-bytswa.ads: Likewise.
        * libgnat/g-calend.adb: Likewise.
        * libgnat/g-calend.ads: Likewise.
        * libgnat/g-casuti.adb: Likewise.
        * libgnat/g-casuti.ads: Likewise.
        * libgnat/g-catiio.adb: Likewise.
        * libgnat/g-catiio.ads: Likewise.
        * libgnat/g-cgi.adb: Likewise.
        * libgnat/g-cgi.ads: Likewise.
        * libgnat/g-cgicoo.adb: Likewise.
        * libgnat/g-cgicoo.ads: Likewise.
        * libgnat/g-cgideb.adb: Likewise.
        * libgnat/g-cgideb.ads: Likewise.
        * libgnat/g-comlin.adb: Likewise.
        * libgnat/g-comlin.ads: Likewise.
        * libgnat/g-comver.adb: Likewise.
        * libgnat/g-comver.ads: Likewise.
        * libgnat/g-cppexc.adb: Likewise.
        * libgnat/g-cppexc.ads: Likewise.
        * libgnat/g-crc32.adb: Likewise.
        * libgnat/g-crc32.ads: Likewise.
        * libgnat/g-ctrl_c.adb: Likewise.
        * libgnat/g-ctrl_c.ads: Likewise.
        * libgnat/g-curexc.ads: Likewise.
        * libgnat/g-debpoo.adb: Likewise.
        * libgnat/g-debpoo.ads: Likewise.
        * libgnat/g-debuti.adb: Likewise.
        * libgnat/g-debuti.ads: Likewise.
        * libgnat/g-decstr.adb: Likewise.
        * libgnat/g-decstr.ads: Likewise.
        * libgnat/g-deutst.ads: Likewise.
        * libgnat/g-diopit.adb: Likewise.
        * libgnat/g-diopit.ads: Likewise.
        * libgnat/g-dirope.adb: Likewise.
        * libgnat/g-dirope.ads: Likewise.
        * libgnat/g-dynhta.adb: Likewise.
        * libgnat/g-dynhta.ads: Likewise.
        * libgnat/g-dyntab.adb: Likewise.
        * libgnat/g-dyntab.ads: Likewise.
        * libgnat/g-eacodu.adb: Likewise.
        * libgnat/g-encstr.adb: Likewise.
        * libgnat/g-encstr.ads: Likewise.
        * libgnat/g-enutst.ads: Likewise.
        * libgnat/g-excact.adb: Likewise.
        * libgnat/g-excact.ads: Likewise.
        * libgnat/g-except.ads: Likewise.
        * libgnat/g-exctra.adb: Likewise.
        * libgnat/g-exctra.ads: Likewise.
        * libgnat/g-expect.adb: Likewise.
        * libgnat/g-expect.ads: Likewise.
        * libgnat/g-exptty.adb: Likewise.
        * libgnat/g-exptty.ads: Likewise.
        * libgnat/g-flocon.ads: Likewise.
        * libgnat/g-forstr.adb: Likewise.
        * libgnat/g-forstr.ads: Likewise.
        * libgnat/g-graphs.adb: Likewise.
        * libgnat/g-graphs.ads: Likewise.
        * libgnat/g-heasor.adb: Likewise.
        * libgnat/g-heasor.ads: Likewise.
        * libgnat/g-hesora.adb: Likewise.
        * libgnat/g-hesora.ads: Likewise.
        * libgnat/g-hesorg.adb: Likewise.
        * libgnat/g-hesorg.ads: Likewise.
        * libgnat/g-htable.adb: Likewise.
        * libgnat/g-htable.ads: Likewise.
        * libgnat/g-io-put__vxworks.adb: Likewise.
        * libgnat/g-io.adb: Likewise.
        * libgnat/g-io.ads: Likewise.
        * libgnat/g-io_aux.adb: Likewise.
        * libgnat/g-io_aux.ads: Likewise.
        * libgnat/g-lists.adb: Likewise.
        * libgnat/g-lists.ads: Likewise.
        * libgnat/g-locfil.adb: Likewise.
        * libgnat/g-locfil.ads: Likewise.
        * libgnat/g-mbdira.adb: Likewise.
        * libgnat/g-mbdira.ads: Likewise.
        * libgnat/g-mbflra.adb: Likewise.
        * libgnat/g-mbflra.ads: Likewise.
        * libgnat/g-md5.adb: Likewise.
        * libgnat/g-md5.ads: Likewise.
        * libgnat/g-memdum.adb: Likewise.
        * libgnat/g-memdum.ads: Likewise.
        * libgnat/g-moreex.adb: Likewise.
        * libgnat/g-moreex.ads: Likewise.
        * libgnat/g-os_lib.adb: Likewise.
        * libgnat/g-os_lib.ads: Likewise.
        * libgnat/g-pehage.adb: Likewise.
        * libgnat/g-pehage.ads: Likewise.
        * libgnat/g-rannum.adb: Likewise.
        * libgnat/g-rannum.ads: Likewise.
        * libgnat/g-regexp.adb: Likewise.
        * libgnat/g-regexp.ads: Likewise.
        * libgnat/g-regist.adb: Likewise.
        * libgnat/g-regist.ads: Likewise.
        * libgnat/g-regpat.adb: Likewise.
        * libgnat/g-regpat.ads: Likewise.
        * libgnat/g-rewdat.adb: Likewise.
        * libgnat/g-rewdat.ads: Likewise.
        * libgnat/g-sechas.adb: Likewise.
        * libgnat/g-sechas.ads: Likewise.
        * libgnat/g-sehamd.adb: Likewise.
        * libgnat/g-sehamd.ads: Likewise.
        * libgnat/g-sehash.adb: Likewise.
        * libgnat/g-sehash.ads: Likewise.
        * libgnat/g-sercom.adb: Likewise.
        * libgnat/g-sercom.ads: Likewise.
        * libgnat/g-sercom__linux.adb: Likewise.
        * libgnat/g-sercom__mingw.adb: Likewise.
        * libgnat/g-sestin.ads: Likewise.
        * libgnat/g-sets.adb: Likewise.
        * libgnat/g-sets.ads: Likewise.
        * libgnat/g-sha1.adb: Likewise.
        * libgnat/g-sha1.ads: Likewise.
        * libgnat/g-sha224.ads: Likewise.
        * libgnat/g-sha256.ads: Likewise.
        * libgnat/g-sha384.ads: Likewise.
        * libgnat/g-sha512.ads: Likewise.
        * libgnat/g-shsh32.adb: Likewise.
        * libgnat/g-shsh32.ads: Likewise.
        * libgnat/g-shsh64.adb: Likewise.
        * libgnat/g-shsh64.ads: Likewise.
        * libgnat/g-shshco.adb: Likewise.
        * libgnat/g-shshco.ads: Likewise.
        * libgnat/g-soccon.ads: Likewise.
        * libgnat/g-socket.adb: Likewise.
        * libgnat/g-socket.ads: Likewise.
        * libgnat/g-socket__dummy.adb: Likewise.
        * libgnat/g-socket__dummy.ads: Likewise.
        * libgnat/g-socthi.adb: Likewise.
        * libgnat/g-socthi.ads: Likewise.
        * libgnat/g-socthi__dummy.adb: Likewise.
        * libgnat/g-socthi__dummy.ads: Likewise.
        * libgnat/g-socthi__mingw.adb: Likewise.
        * libgnat/g-socthi__mingw.ads: Likewise.
        * libgnat/g-socthi__vxworks.adb: Likewise.
        * libgnat/g-socthi__vxworks.ads: Likewise.
        * libgnat/g-soliop.ads: Likewise.
        * libgnat/g-soliop__lynxos.ads: Likewise.
        * libgnat/g-soliop__mingw.ads: Likewise.
        * libgnat/g-soliop__qnx.ads: Likewise.
        * libgnat/g-soliop__solaris.ads: Likewise.
        * libgnat/g-sothco.adb: Likewise.
        * libgnat/g-sothco.ads: Likewise.
        * libgnat/g-sothco__dummy.adb: Likewise.
        * libgnat/g-sothco__dummy.ads: Likewise.
        * libgnat/g-souinf.ads: Likewise.
        * libgnat/g-spchge.adb: Likewise.
        * libgnat/g-spchge.ads: Likewise.
        * libgnat/g-speche.adb: Likewise.
        * libgnat/g-speche.ads: Likewise.
        * libgnat/g-spipat.adb: Likewise.
        * libgnat/g-spipat.ads: Likewise.
        * libgnat/g-spitbo.adb: Likewise.
        * libgnat/g-spitbo.ads: Likewise.
        * libgnat/g-sptabo.ads: Likewise.
        * libgnat/g-sptain.ads: Likewise.
        * libgnat/g-sptavs.ads: Likewise.
        * libgnat/g-sse.ads: Likewise.
        * libgnat/g-ssvety.ads: Likewise.
        * libgnat/g-sthcso.adb: Likewise.
        * libgnat/g-stheme.adb: Likewise.
        * libgnat/g-strhas.ads: Likewise.
        * libgnat/g-string.adb: Likewise.
        * libgnat/g-string.ads: Likewise.
        * libgnat/g-strspl.ads: Likewise.
        * libgnat/g-stseme.adb: Likewise.
        * libgnat/g-stsifd__sockets.adb: Likewise.
        * libgnat/g-table.adb: Likewise.
        * libgnat/g-table.ads: Likewise.
        * libgnat/g-tasloc.adb: Likewise.
        * libgnat/g-tasloc.ads: Likewise.
        * libgnat/g-timsta.adb: Likewise.
        * libgnat/g-timsta.ads: Likewise.
        * libgnat/g-traceb.adb: Likewise.
        * libgnat/g-traceb.ads: Likewise.
        * libgnat/g-trasym.adb: Likewise.
        * libgnat/g-trasym.ads: Likewise.
        * libgnat/g-tty.adb: Likewise.
        * libgnat/g-tty.ads: Likewise.
        * libgnat/g-u3spch.adb: Likewise.
        * libgnat/g-u3spch.ads: Likewise.
        * libgnat/g-utf_32.adb: Likewise.
        * libgnat/g-utf_32.ads: Likewise.
        * libgnat/g-wispch.adb: Likewise.
        * libgnat/g-wispch.ads: Likewise.
        * libgnat/g-wistsp.ads: Likewise.
        * libgnat/g-zspche.adb: Likewise.
        * libgnat/g-zspche.ads: Likewise.
        * libgnat/g-zstspl.ads: Likewise.
        * libgnat/gnat.ads: Likewise.
        * libgnat/i-c.adb: Likewise.
        * libgnat/i-cexten.ads: Likewise.
        * libgnat/i-cobol.adb: Likewise.
        * libgnat/i-cobol.ads: Likewise.
        * libgnat/i-cpoint.adb: Likewise.
        * libgnat/i-cpoint.ads: Likewise.
        * libgnat/i-cstrea.adb: Likewise.
        * libgnat/i-cstrea.ads: Likewise.
        * libgnat/i-cstrin.adb: Likewise.
        * libgnat/i-cstrin.ads: Likewise.
        * libgnat/i-fortra.adb: Likewise.
        * libgnat/i-pacdec.adb: Likewise.
        * libgnat/i-pacdec.ads: Likewise.
        * libgnat/i-vxwoio.adb: Likewise.
        * libgnat/i-vxwoio.ads: Likewise.
        * libgnat/i-vxwork.ads: Likewise.
        * libgnat/i-vxwork__x86.ads: Likewise.
        * libgnat/interfac.ads: Likewise.
        * libgnat/memtrack.adb: Likewise.
        * libgnat/s-addima.adb: Likewise.
        * libgnat/s-addima.ads: Likewise.
        * libgnat/s-addope.adb: Likewise.
        * libgnat/s-addope.ads: Likewise.
        * libgnat/s-aotase.adb: Likewise.
        * libgnat/s-aotase.ads: Likewise.
        * libgnat/s-arit64.adb: Likewise.
        * libgnat/s-arit64.ads: Likewise.
        * libgnat/s-assert.adb: Likewise.
        * libgnat/s-assert.ads: Likewise.
        * libgnat/s-atacco.adb: Likewise.
        * libgnat/s-atacco.ads: Likewise.
        * libgnat/s-atocou.adb: Likewise.
        * libgnat/s-atocou.ads: Likewise.
        * libgnat/s-atocou__builtin.adb: Likewise.
        * libgnat/s-atocou__x86.adb: Likewise.
        * libgnat/s-atoope.ads: Likewise.
        * libgnat/s-atopar.adb: Likewise.
        * libgnat/s-atopar.ads: Likewise.
        * libgnat/s-atopex.adb: Likewise.
        * libgnat/s-atopex.ads: Likewise.
        * libgnat/s-atopri.adb: Likewise.
        * libgnat/s-atopri.ads: Likewise.
        * libgnat/s-auxdec.adb: Likewise.
        * libgnat/s-auxdec.ads: Likewise.
        * libgnat/s-bignum.adb: Likewise.
        * libgnat/s-bignum.ads: Likewise.
        * libgnat/s-bitfie.ads: Likewise.
        * libgnat/s-bitops.adb: Likewise.
        * libgnat/s-bitops.ads: Likewise.
        * libgnat/s-bituti.adb: Likewise.
        * libgnat/s-bituti.ads: Likewise.
        * libgnat/s-boarop.ads: Likewise.
        * libgnat/s-boustr.adb: Likewise.
        * libgnat/s-boustr.ads: Likewise.
        * libgnat/s-bytswa.ads: Likewise.
        * libgnat/s-carsi8.adb: Likewise.
        * libgnat/s-carsi8.ads: Likewise.
        * libgnat/s-carun8.adb: Likewise.
        * libgnat/s-carun8.ads: Likewise.
        * libgnat/s-casi16.adb: Likewise.
        * libgnat/s-casi16.ads: Likewise.
        * libgnat/s-casi32.adb: Likewise.
        * libgnat/s-casi32.ads: Likewise.
        * libgnat/s-casi64.adb: Likewise.
        * libgnat/s-casi64.ads: Likewise.
        * libgnat/s-casuti.adb: Likewise.
        * libgnat/s-casuti.ads: Likewise.
        * libgnat/s-caun16.adb: Likewise.
        * libgnat/s-caun16.ads: Likewise.
        * libgnat/s-caun32.adb: Likewise.
        * libgnat/s-caun32.ads: Likewise.
        * libgnat/s-caun64.adb: Likewise.
        * libgnat/s-caun64.ads: Likewise.
        * libgnat/s-chepoo.ads: Likewise.
        * libgnat/s-commun.adb: Likewise.
        * libgnat/s-commun.ads: Likewise.
        * libgnat/s-conca2.adb: Likewise.
        * libgnat/s-conca2.ads: Likewise.
        * libgnat/s-conca3.adb: Likewise.
        * libgnat/s-conca3.ads: Likewise.
        * libgnat/s-conca4.adb: Likewise.
        * libgnat/s-conca4.ads: Likewise.
        * libgnat/s-conca5.adb: Likewise.
        * libgnat/s-conca5.ads: Likewise.
        * libgnat/s-conca6.adb: Likewise.
        * libgnat/s-conca6.ads: Likewise.
        * libgnat/s-conca7.adb: Likewise.
        * libgnat/s-conca7.ads: Likewise.
        * libgnat/s-conca8.adb: Likewise.
        * libgnat/s-conca8.ads: Likewise.
        * libgnat/s-conca9.adb: Likewise.
        * libgnat/s-conca9.ads: Likewise.
        * libgnat/s-crc32.adb: Likewise.
        * libgnat/s-crc32.ads: Likewise.
        * libgnat/s-crtl.ads: Likewise.
        * libgnat/s-dfmkio.ads: Likewise.
        * libgnat/s-dfmopr.ads: Likewise.
        * libgnat/s-dgmgop.ads: Likewise.
        * libgnat/s-diflio.adb: Likewise.
        * libgnat/s-diflio.ads: Likewise.
        * libgnat/s-diflmk.ads: Likewise.
        * libgnat/s-digemk.ads: Likewise.
        * libgnat/s-diinio.adb: Likewise.
        * libgnat/s-diinio.ads: Likewise.
        * libgnat/s-dilomk.ads: Likewise.
        * libgnat/s-dim.ads: Likewise.
        * libgnat/s-dimkio.ads: Likewise.
        * libgnat/s-dimmks.ads: Likewise.
        * libgnat/s-direio.adb: Likewise.
        * libgnat/s-direio.ads: Likewise.
        * libgnat/s-dlmkio.ads: Likewise.
        * libgnat/s-dlmopr.ads: Likewise.
        * libgnat/s-dmotpr.ads: Likewise.
        * libgnat/s-dsaser.ads: Likewise.
        * libgnat/s-dwalin.adb: Likewise.
        * libgnat/s-dwalin.ads: Likewise.
        * libgnat/s-elaall.adb: Likewise.
        * libgnat/s-elaall.ads: Likewise.
        * libgnat/s-excdeb.adb: Likewise.
        * libgnat/s-excdeb.ads: Likewise.
        * libgnat/s-except.adb: Likewise.
        * libgnat/s-except.ads: Likewise.
        * libgnat/s-excmac__arm.adb: Likewise.
        * libgnat/s-excmac__arm.ads: Likewise.
        * libgnat/s-excmac__gcc.adb: Likewise.
        * libgnat/s-excmac__gcc.ads: Likewise.
        * libgnat/s-exctab.adb: Likewise.
        * libgnat/s-exctab.ads: Likewise.
        * libgnat/s-exctra.adb: Likewise.
        * libgnat/s-exctra.ads: Likewise.
        * libgnat/s-exnint.adb: Likewise.
        * libgnat/s-exnint.ads: Likewise.
        * libgnat/s-exnllf.adb: Likewise.
        * libgnat/s-exnllf.ads: Likewise.
        * libgnat/s-exnlli.adb: Likewise.
        * libgnat/s-exnlli.ads: Likewise.
        * libgnat/s-expint.adb: Likewise.
        * libgnat/s-expint.ads: Likewise.
        * libgnat/s-explli.adb: Likewise.
        * libgnat/s-explli.ads: Likewise.
        * libgnat/s-expllu.adb: Likewise.
        * libgnat/s-expllu.ads: Likewise.
        * libgnat/s-expmod.adb: Likewise.
        * libgnat/s-expmod.ads: Likewise.
        * libgnat/s-expuns.adb: Likewise.
        * libgnat/s-expuns.ads: Likewise.
        * libgnat/s-fatflt.ads: Likewise.
        * libgnat/s-fatgen.adb: Likewise.
        * libgnat/s-fatgen.ads: Likewise.
        * libgnat/s-fatlfl.ads: Likewise.
        * libgnat/s-fatllf.ads: Likewise.
        * libgnat/s-fatsfl.ads: Likewise.
        * libgnat/s-ficobl.ads: Likewise.
        * libgnat/s-filatt.ads: Likewise.
        * libgnat/s-fileio.adb: Likewise.
        * libgnat/s-fileio.ads: Likewise.
        * libgnat/s-finmas.adb: Likewise.
        * libgnat/s-finmas.ads: Likewise.
        * libgnat/s-finroo.adb: Likewise.
        * libgnat/s-finroo.ads: Likewise.
        * libgnat/s-flocon.adb: Likewise.
        * libgnat/s-flocon.ads: Likewise.
        * libgnat/s-flocon__none.adb: Likewise.
        * libgnat/s-fore.adb: Likewise.
        * libgnat/s-fore.ads: Likewise.
        * libgnat/s-gearop.adb: Likewise.
        * libgnat/s-gearop.ads: Likewise.
        * libgnat/s-genbig.adb: Likewise.
        * libgnat/s-genbig.ads: Likewise.
        * libgnat/s-geveop.adb: Likewise.
        * libgnat/s-geveop.ads: Likewise.
        * libgnat/s-gloloc.adb: Likewise.
        * libgnat/s-gloloc.ads: Likewise.
        * libgnat/s-gloloc__mingw.adb: Likewise.
        * libgnat/s-htable.adb: Likewise.
        * libgnat/s-htable.ads: Likewise.
        * libgnat/s-imenne.adb: Likewise.
        * libgnat/s-imenne.ads: Likewise.
        * libgnat/s-imgbiu.adb: Likewise.
        * libgnat/s-imgbiu.ads: Likewise.
        * libgnat/s-imgboo.adb: Likewise.
        * libgnat/s-imgboo.ads: Likewise.
        * libgnat/s-imgcha.adb: Likewise.
        * libgnat/s-imgcha.ads: Likewise.
        * libgnat/s-imgdec.adb: Likewise.
        * libgnat/s-imgdec.ads: Likewise.
        * libgnat/s-imgenu.adb: Likewise.
        * libgnat/s-imgenu.ads: Likewise.
        * libgnat/s-imgint.adb: Likewise.
        * libgnat/s-imgint.ads: Likewise.
        * libgnat/s-imgllb.adb: Likewise.
        * libgnat/s-imgllb.ads: Likewise.
        * libgnat/s-imglld.adb: Likewise.
        * libgnat/s-imglld.ads: Likewise.
        * libgnat/s-imglli.adb: Likewise.
        * libgnat/s-imglli.ads: Likewise.
        * libgnat/s-imgllu.adb: Likewise.
        * libgnat/s-imgllu.ads: Likewise.
        * libgnat/s-imgllw.adb: Likewise.
        * libgnat/s-imgllw.ads: Likewise.
        * libgnat/s-imgrea.adb: Likewise.
        * libgnat/s-imgrea.ads: Likewise.
        * libgnat/s-imguns.adb: Likewise.
        * libgnat/s-imguns.ads: Likewise.
        * libgnat/s-imgwch.adb: Likewise.
        * libgnat/s-imgwch.ads: Likewise.
        * libgnat/s-imgwiu.adb: Likewise.
        * libgnat/s-imgwiu.ads: Likewise.
        * libgnat/s-io.adb: Likewise.
        * libgnat/s-io.ads: Likewise.
        * libgnat/s-llflex.ads: Likewise.
        * libgnat/s-maccod.ads: Likewise.
        * libgnat/s-mantis.adb: Likewise.
        * libgnat/s-mantis.ads: Likewise.
        * libgnat/s-mastop.adb: Likewise.
        * libgnat/s-mastop.ads: Likewise.
        * libgnat/s-memcop.ads: Likewise.
        * libgnat/s-memory.adb: Likewise.
        * libgnat/s-memory.ads: Likewise.
        * libgnat/s-mmap.adb: Likewise.
        * libgnat/s-mmap.ads: Likewise.
        * libgnat/s-mmauni__long.ads: Likewise.
        * libgnat/s-mmosin__mingw.adb: Likewise.
        * libgnat/s-mmosin__mingw.ads: Likewise.
        * libgnat/s-mmosin__unix.adb: Likewise.
        * libgnat/s-mmosin__unix.ads: Likewise.
        * libgnat/s-multip.adb: Likewise.
        * libgnat/s-objrea.adb: Likewise.
        * libgnat/s-objrea.ads: Likewise.
        * libgnat/s-optide.adb: Likewise.
        * libgnat/s-os_lib.adb: Likewise.
        * libgnat/s-os_lib.ads: Likewise.
        * libgnat/s-osprim.ads: Likewise.
        * libgnat/s-osprim__darwin.adb: Likewise.
        * libgnat/s-osprim__lynxos.ads: Likewise.
        * libgnat/s-osprim__mingw.adb: Likewise.
        * libgnat/s-osprim__posix.adb: Likewise.
        * libgnat/s-osprim__posix2008.adb: Likewise.
        * libgnat/s-osprim__rtems.adb: Likewise.
        * libgnat/s-osprim__solaris.adb: Likewise.
        * libgnat/s-osprim__unix.adb: Likewise.
        * libgnat/s-osprim__vxworks.adb: Likewise.
        * libgnat/s-osprim__x32.adb: Likewise.
        * libgnat/s-osvers__vxworks-653.ads: Likewise.
        * libgnat/s-pack03.adb: Likewise.
        * libgnat/s-pack03.ads: Likewise.
        * libgnat/s-pack05.adb: Likewise.
        * libgnat/s-pack05.ads: Likewise.
        * libgnat/s-pack06.adb: Likewise.
        * libgnat/s-pack06.ads: Likewise.
        * libgnat/s-pack07.adb: Likewise.
        * libgnat/s-pack07.ads: Likewise.
        * libgnat/s-pack09.adb: Likewise.
        * libgnat/s-pack09.ads: Likewise.
        * libgnat/s-pack10.adb: Likewise.
        * libgnat/s-pack10.ads: Likewise.
        * libgnat/s-pack11.adb: Likewise.
        * libgnat/s-pack11.ads: Likewise.
        * libgnat/s-pack12.adb: Likewise.
        * libgnat/s-pack12.ads: Likewise.
        * libgnat/s-pack13.adb: Likewise.
        * libgnat/s-pack13.ads: Likewise.
        * libgnat/s-pack14.adb: Likewise.
        * libgnat/s-pack14.ads: Likewise.
        * libgnat/s-pack15.adb: Likewise.
        * libgnat/s-pack15.ads: Likewise.
        * libgnat/s-pack17.adb: Likewise.
        * libgnat/s-pack17.ads: Likewise.
        * libgnat/s-pack18.adb: Likewise.
        * libgnat/s-pack18.ads: Likewise.
        * libgnat/s-pack19.adb: Likewise.
        * libgnat/s-pack19.ads: Likewise.
        * libgnat/s-pack20.adb: Likewise.
        * libgnat/s-pack20.ads: Likewise.
        * libgnat/s-pack21.adb: Likewise.
        * libgnat/s-pack21.ads: Likewise.
        * libgnat/s-pack22.adb: Likewise.
        * libgnat/s-pack22.ads: Likewise.
        * libgnat/s-pack23.adb: Likewise.
        * libgnat/s-pack23.ads: Likewise.
        * libgnat/s-pack24.adb: Likewise.
        * libgnat/s-pack24.ads: Likewise.
        * libgnat/s-pack25.adb: Likewise.
        * libgnat/s-pack25.ads: Likewise.
        * libgnat/s-pack26.adb: Likewise.
        * libgnat/s-pack26.ads: Likewise.
        * libgnat/s-pack27.adb: Likewise.
        * libgnat/s-pack27.ads: Likewise.
        * libgnat/s-pack28.adb: Likewise.
        * libgnat/s-pack28.ads: Likewise.
        * libgnat/s-pack29.adb: Likewise.
        * libgnat/s-pack29.ads: Likewise.
        * libgnat/s-pack30.adb: Likewise.
        * libgnat/s-pack30.ads: Likewise.
        * libgnat/s-pack31.adb: Likewise.
        * libgnat/s-pack31.ads: Likewise.
        * libgnat/s-pack33.adb: Likewise.
        * libgnat/s-pack33.ads: Likewise.
        * libgnat/s-pack34.adb: Likewise.
        * libgnat/s-pack34.ads: Likewise.
        * libgnat/s-pack35.adb: Likewise.
        * libgnat/s-pack35.ads: Likewise.
        * libgnat/s-pack36.adb: Likewise.
        * libgnat/s-pack36.ads: Likewise.
        * libgnat/s-pack37.adb: Likewise.
        * libgnat/s-pack37.ads: Likewise.
        * libgnat/s-pack38.adb: Likewise.
        * libgnat/s-pack38.ads: Likewise.
        * libgnat/s-pack39.adb: Likewise.
        * libgnat/s-pack39.ads: Likewise.
        * libgnat/s-pack40.adb: Likewise.
        * libgnat/s-pack40.ads: Likewise.
        * libgnat/s-pack41.adb: Likewise.
        * libgnat/s-pack41.ads: Likewise.
        * libgnat/s-pack42.adb: Likewise.
        * libgnat/s-pack42.ads: Likewise.
        * libgnat/s-pack43.adb: Likewise.
        * libgnat/s-pack43.ads: Likewise.
        * libgnat/s-pack44.adb: Likewise.
        * libgnat/s-pack44.ads: Likewise.
        * libgnat/s-pack45.adb: Likewise.
        * libgnat/s-pack45.ads: Likewise.
        * libgnat/s-pack46.adb: Likewise.
        * libgnat/s-pack46.ads: Likewise.
        * libgnat/s-pack47.adb: Likewise.
        * libgnat/s-pack47.ads: Likewise.
        * libgnat/s-pack48.adb: Likewise.
        * libgnat/s-pack48.ads: Likewise.
        * libgnat/s-pack49.adb: Likewise.
        * libgnat/s-pack49.ads: Likewise.
        * libgnat/s-pack50.adb: Likewise.
        * libgnat/s-pack50.ads: Likewise.
        * libgnat/s-pack51.adb: Likewise.
        * libgnat/s-pack51.ads: Likewise.
        * libgnat/s-pack52.adb: Likewise.
        * libgnat/s-pack52.ads: Likewise.
        * libgnat/s-pack53.adb: Likewise.
        * libgnat/s-pack53.ads: Likewise.
        * libgnat/s-pack54.adb: Likewise.
        * libgnat/s-pack54.ads: Likewise.
        * libgnat/s-pack55.adb: Likewise.
        * libgnat/s-pack55.ads: Likewise.
        * libgnat/s-pack56.adb: Likewise.
        * libgnat/s-pack56.ads: Likewise.
        * libgnat/s-pack57.adb: Likewise.
        * libgnat/s-pack57.ads: Likewise.
        * libgnat/s-pack58.adb: Likewise.
        * libgnat/s-pack58.ads: Likewise.
        * libgnat/s-pack59.adb: Likewise.
        * libgnat/s-pack59.ads: Likewise.
        * libgnat/s-pack60.adb: Likewise.
        * libgnat/s-pack60.ads: Likewise.
        * libgnat/s-pack61.adb: Likewise.
        * libgnat/s-pack61.ads: Likewise.
        * libgnat/s-pack62.adb: Likewise.
        * libgnat/s-pack62.ads: Likewise.
        * libgnat/s-pack63.adb: Likewise.
        * libgnat/s-pack63.ads: Likewise.
        * libgnat/s-parame.adb: Likewise.
        * libgnat/s-parame.ads: Likewise.
        * libgnat/s-parame__ae653.ads: Likewise.
        * libgnat/s-parame__hpux.ads: Likewise.
        * libgnat/s-parame__rtems.adb: Likewise.
        * libgnat/s-parame__vxworks.adb: Likewise.
        * libgnat/s-parame__vxworks.ads: Likewise.
        * libgnat/s-parint.adb: Likewise.
        * libgnat/s-parint.ads: Likewise.
        * libgnat/s-pooglo.adb: Likewise.
        * libgnat/s-pooglo.ads: Likewise.
        * libgnat/s-pooloc.adb: Likewise.
        * libgnat/s-pooloc.ads: Likewise.
        * libgnat/s-poosiz.adb: Likewise.
        * libgnat/s-poosiz.ads: Likewise.
        * libgnat/s-powtab.ads: Likewise.
        * libgnat/s-purexc.ads: Likewise.
        * libgnat/s-rannum.adb: Likewise.
        * libgnat/s-rannum.ads: Likewise.
        * libgnat/s-ransee.adb: Likewise.
        * libgnat/s-ransee.ads: Likewise.
        * libgnat/s-regexp.adb: Likewise.
        * libgnat/s-regexp.ads: Likewise.
        * libgnat/s-regpat.adb: Likewise.
        * libgnat/s-regpat.ads: Likewise.
        * libgnat/s-resfil.adb: Likewise.
        * libgnat/s-resfil.ads: Likewise.
        * libgnat/s-restri.adb: Likewise.
        * libgnat/s-restri.ads: Likewise.
        * libgnat/s-rident.ads: Likewise.
        * libgnat/s-rpc.adb: Likewise.
        * libgnat/s-rpc.ads: Likewise.
        * libgnat/s-scaval.adb: Likewise.
        * libgnat/s-scaval.ads: Likewise.
        * libgnat/s-secsta.adb: Likewise.
        * libgnat/s-secsta.ads: Likewise.
        * libgnat/s-sequio.adb: Likewise.
        * libgnat/s-sequio.ads: Likewise.
        * libgnat/s-shasto.adb: Likewise.
        * libgnat/s-shasto.ads: Likewise.
        * libgnat/s-soflin.adb: Likewise.
        * libgnat/s-soflin.ads: Likewise.
        * libgnat/s-soliin.adb: Likewise.
        * libgnat/s-soliin.ads: Likewise.
        * libgnat/s-sopco3.adb: Likewise.
        * libgnat/s-sopco3.ads: Likewise.
        * libgnat/s-sopco4.adb: Likewise.
        * libgnat/s-sopco4.ads: Likewise.
        * libgnat/s-sopco5.adb: Likewise.
        * libgnat/s-sopco5.ads: Likewise.
        * libgnat/s-spsufi.adb: Likewise.
        * libgnat/s-spsufi.ads: Likewise.
        * libgnat/s-stache.adb: Likewise.
        * libgnat/s-stache.ads: Likewise.
        * libgnat/s-stalib.adb: Likewise.
        * libgnat/s-stalib.ads: Likewise.
        * libgnat/s-stausa.adb: Likewise.
        * libgnat/s-stausa.ads: Likewise.
        * libgnat/s-stchop.adb: Likewise.
        * libgnat/s-stchop.ads: Likewise.
        * libgnat/s-stchop__limit.ads: Likewise.
        * libgnat/s-stchop__rtems.adb: Likewise.
        * libgnat/s-stchop__vxworks.adb: Likewise.
        * libgnat/s-stoele.adb: Likewise.
        * libgnat/s-stoele.ads: Likewise.
        * libgnat/s-stopoo.adb: Likewise.
        * libgnat/s-stopoo.ads: Likewise.
        * libgnat/s-stposu.adb: Likewise.
        * libgnat/s-stposu.ads: Likewise.
        * libgnat/s-stratt.adb: Likewise.
        * libgnat/s-stratt.ads: Likewise.
        * libgnat/s-stratt__xdr.adb: Likewise.
        * libgnat/s-strcom.adb: Likewise.
        * libgnat/s-strcom.ads: Likewise.
        * libgnat/s-strhas.adb: Likewise.
        * libgnat/s-strhas.ads: Likewise.
        * libgnat/s-string.adb: Likewise.
        * libgnat/s-string.ads: Likewise.
        * libgnat/s-strops.adb: Likewise.
        * libgnat/s-strops.ads: Likewise.
        * libgnat/s-ststop.adb: Likewise.
        * libgnat/s-ststop.ads: Likewise.
        * libgnat/s-tasloc.adb: Likewise.
        * libgnat/s-tasloc.ads: Likewise.
        * libgnat/s-thread.ads: Likewise.
        * libgnat/s-thread__ae653.adb: Likewise.
        * libgnat/s-traceb.adb: Likewise.
        * libgnat/s-traceb.ads: Likewise.
        * libgnat/s-traceb__hpux.adb: Likewise.
        * libgnat/s-traceb__mastop.adb: Likewise.
        * libgnat/s-traent.adb: Likewise.
        * libgnat/s-traent.ads: Likewise.
        * libgnat/s-trasym.adb: Likewise.
        * libgnat/s-trasym.ads: Likewise.
        * libgnat/s-trasym__dwarf.adb: Likewise.
        * libgnat/s-tsmona.adb: Likewise.
        * libgnat/s-tsmona__linux.adb: Likewise.
        * libgnat/s-tsmona__mingw.adb: Likewise.
        * libgnat/s-unstyp.ads: Likewise.
        * libgnat/s-utf_32.adb: Likewise.
        * libgnat/s-utf_32.ads: Likewise.
        * libgnat/s-valboo.adb: Likewise.
        * libgnat/s-valboo.ads: Likewise.
        * libgnat/s-valcha.adb: Likewise.
        * libgnat/s-valcha.ads: Likewise.
        * libgnat/s-valdec.adb: Likewise.
        * libgnat/s-valdec.ads: Likewise.
        * libgnat/s-valenu.adb: Likewise.
        * libgnat/s-valenu.ads: Likewise.
        * libgnat/s-valint.adb: Likewise.
        * libgnat/s-valint.ads: Likewise.
        * libgnat/s-vallld.adb: Likewise.
        * libgnat/s-vallld.ads: Likewise.
        * libgnat/s-vallli.adb: Likewise.
        * libgnat/s-vallli.ads: Likewise.
        * libgnat/s-valllu.adb: Likewise.
        * libgnat/s-valllu.ads: Likewise.
        * libgnat/s-valrea.adb: Likewise.
        * libgnat/s-valrea.ads: Likewise.
        * libgnat/s-valuns.adb: Likewise.
        * libgnat/s-valuns.ads: Likewise.
        * libgnat/s-valuti.adb: Likewise.
        * libgnat/s-valuti.ads: Likewise.
        * libgnat/s-valwch.adb: Likewise.
        * libgnat/s-valwch.ads: Likewise.
        * libgnat/s-veboop.adb: Likewise.
        * libgnat/s-veboop.ads: Likewise.
        * libgnat/s-vector.ads: Likewise.
        * libgnat/s-vercon.adb: Likewise.
        * libgnat/s-vercon.ads: Likewise.
        * libgnat/s-wchcnv.adb: Likewise.
        * libgnat/s-wchcnv.ads: Likewise.
        * libgnat/s-wchcon.adb: Likewise.
        * libgnat/s-wchcon.ads: Likewise.
        * libgnat/s-wchjis.adb: Likewise.
        * libgnat/s-wchjis.ads: Likewise.
        * libgnat/s-wchstw.adb: Likewise.
        * libgnat/s-wchstw.ads: Likewise.
        * libgnat/s-wchwts.adb: Likewise.
        * libgnat/s-wchwts.ads: Likewise.
        * libgnat/s-widboo.adb: Likewise.
        * libgnat/s-widboo.ads: Likewise.
        * libgnat/s-widcha.adb: Likewise.
        * libgnat/s-widcha.ads: Likewise.
        * libgnat/s-widenu.adb: Likewise.
        * libgnat/s-widenu.ads: Likewise.
        * libgnat/s-widlli.adb: Likewise.
        * libgnat/s-widlli.ads: Likewise.
        * libgnat/s-widllu.adb: Likewise.
        * libgnat/s-widllu.ads: Likewise.
        * libgnat/s-widwch.adb: Likewise.
        * libgnat/s-widwch.ads: Likewise.
        * libgnat/s-win32.ads: Likewise.
        * libgnat/s-winext.ads: Likewise.
        * libgnat/s-wwdcha.adb: Likewise.
        * libgnat/s-wwdcha.ads: Likewise.
        * libgnat/s-wwdenu.adb: Likewise.
        * libgnat/s-wwdenu.ads: Likewise.
        * libgnat/s-wwdwch.adb: Likewise.
        * libgnat/s-wwdwch.ads: Likewise.
        * libgnat/system-aix.ads: Likewise.
        * libgnat/system-darwin-arm.ads: Likewise.
        * libgnat/system-darwin-ppc.ads: Likewise.
        * libgnat/system-darwin-x86.ads: Likewise.
        * libgnat/system-djgpp.ads: Likewise.
        * libgnat/system-dragonfly-x86_64.ads: Likewise.
        * libgnat/system-freebsd.ads: Likewise.
        * libgnat/system-hpux-ia64.ads: Likewise.
        * libgnat/system-hpux.ads: Likewise.
        * libgnat/system-linux-alpha.ads: Likewise.
        * libgnat/system-linux-arm.ads: Likewise.
        * libgnat/system-linux-hppa.ads: Likewise.
        * libgnat/system-linux-ia64.ads: Likewise.
        * libgnat/system-linux-m68k.ads: Likewise.
        * libgnat/system-linux-mips.ads: Likewise.
        * libgnat/system-linux-ppc.ads: Likewise.
        * libgnat/system-linux-riscv.ads: Likewise.
        * libgnat/system-linux-s390.ads: Likewise.
        * libgnat/system-linux-sh4.ads: Likewise.
        * libgnat/system-linux-sparc.ads: Likewise.
        * libgnat/system-linux-x86.ads: Likewise.
        * libgnat/system-lynxos178-ppc.ads: Likewise.
        * libgnat/system-lynxos178-x86.ads: Likewise.
        * libgnat/system-mingw.ads: Likewise.
        * libgnat/system-qnx-aarch64.ads: Likewise.
        * libgnat/system-rtems.ads: Likewise.
        * libgnat/system-solaris-sparc.ads: Likewise.
        * libgnat/system-solaris-x86.ads: Likewise.
        * libgnat/system-vxworks-arm-rtp-smp.ads: Likewise.
        * libgnat/system-vxworks-arm-rtp.ads: Likewise.
        * libgnat/system-vxworks-arm.ads: Likewise.
        * libgnat/system-vxworks-e500-kernel.ads: Likewise.
        * libgnat/system-vxworks-e500-rtp-smp.ads: Likewise.
        * libgnat/system-vxworks-e500-rtp.ads: Likewise.
        * libgnat/system-vxworks-e500-vthread.ads: Likewise.
        * libgnat/system-vxworks-ppc-kernel.ads: Likewise.
        * libgnat/system-vxworks-ppc-ravenscar.ads: Likewise.
        * libgnat/system-vxworks-ppc-rtp-smp.ads: Likewise.
        * libgnat/system-vxworks-ppc-rtp.ads: Likewise.
        * libgnat/system-vxworks-ppc-vthread.ads: Likewise.
        * libgnat/system-vxworks-ppc.ads: Likewise.
        * libgnat/system-vxworks-x86-kernel.ads: Likewise.
        * libgnat/system-vxworks-x86-rtp-smp.ads: Likewise.
        * libgnat/system-vxworks-x86-rtp.ads: Likewise.
        * libgnat/system-vxworks-x86-vthread.ads: Likewise.
        * libgnat/system-vxworks-x86.ads: Likewise.
        * libgnat/system-vxworks7-aarch64-rtp-smp.ads: Likewise.
        * libgnat/system-vxworks7-aarch64.ads: Likewise.
        * libgnat/system-vxworks7-arm-rtp-smp.ads: Likewise.
        * libgnat/system-vxworks7-arm.ads: Likewise.
        * libgnat/system-vxworks7-e500-kernel.ads: Likewise.
        * libgnat/system-vxworks7-e500-rtp-smp.ads: Likewise.
        * libgnat/system-vxworks7-e500-rtp.ads: Likewise.
        * libgnat/system-vxworks7-ppc-kernel.ads: Likewise.
        * libgnat/system-vxworks7-ppc-rtp-smp.ads: Likewise.
        * libgnat/system-vxworks7-ppc-rtp.ads: Likewise.
        * libgnat/system-vxworks7-ppc64-kernel.ads: Likewise.
        * libgnat/system-vxworks7-ppc64-rtp-smp.ads: Likewise.
        * libgnat/system-vxworks7-x86-kernel.ads: Likewise.
        * libgnat/system-vxworks7-x86-rtp-smp.ads: Likewise.
        * libgnat/system-vxworks7-x86-rtp.ads: Likewise.
        * libgnat/system-vxworks7-x86_64-kernel.ads: Likewise.
        * libgnat/system-vxworks7-x86_64-rtp-smp.ads: Likewise.
        * libgnat/system.ads: Likewise.
        * link.c: Likewise.
        * live.adb: Likewise.
        * live.ads: Likewise.
        * locales.c: Likewise.
        * make.adb: Likewise.
        * make.ads: Likewise.
        * make_util.adb: Likewise.
        * make_util.ads: Likewise.
        * makeusg.adb: Likewise.
        * makeusg.ads: Likewise.
        * mdll-fil.adb: Likewise.
        * mdll-fil.ads: Likewise.
        * mdll-utl.adb: Likewise.
        * mdll-utl.ads: Likewise.
        * mdll.adb: Likewise.
        * mdll.ads: Likewise.
        * mingw32.h: Likewise.
        * mkdir.c: Likewise.
        * namet-sp.adb: Likewise.
        * namet-sp.ads: Likewise.
        * namet.adb: Likewise.
        * namet.ads: Likewise.
        * namet.h: Likewise.
        * nlists.adb: Likewise.
        * nlists.ads: Likewise.
        * nlists.h: Likewise.
        * opt.adb: Likewise.
        * opt.ads: Likewise.
        * osint-b.adb: Likewise.
        * osint-b.ads: Likewise.
        * osint-c.adb: Likewise.
        * osint-c.ads: Likewise.
        * osint-l.adb: Likewise.
        * osint-l.ads: Likewise.
        * osint-m.adb: Likewise.
        * osint-m.ads: Likewise.
        * osint.adb: Likewise.
        * osint.ads: Likewise.
        * output.adb: Likewise.
        * output.ads: Likewise.
        * par-ch10.adb: Likewise.
        * par-ch11.adb: Likewise.
        * par-ch12.adb: Likewise.
        * par-ch13.adb: Likewise.
        * par-ch2.adb: Likewise.
        * par-ch3.adb: Likewise.
        * par-ch4.adb: Likewise.
        * par-ch5.adb: Likewise.
        * par-ch6.adb: Likewise.
        * par-ch7.adb: Likewise.
        * par-ch8.adb: Likewise.
        * par-ch9.adb: Likewise.
        * par-endh.adb: Likewise.
        * par-labl.adb: Likewise.
        * par-load.adb: Likewise.
        * par-prag.adb: Likewise.
        * par-sync.adb: Likewise.
        * par-tchk.adb: Likewise.
        * par-util.adb: Likewise.
        * par.adb: Likewise.
        * par.ads: Likewise.
        * par_sco.adb: Likewise.
        * par_sco.ads: Likewise.
        * pprint.adb: Likewise.
        * pprint.ads: Likewise.
        * prep.adb: Likewise.
        * prep.ads: Likewise.
        * prepcomp.adb: Likewise.
        * prepcomp.ads: Likewise.
        * put_scos.adb: Likewise.
        * put_scos.ads: Likewise.
        * raise-gcc.c: Likewise.
        * raise.c: Likewise.
        * raise.h: Likewise.
        * repinfo-input.adb: Likewise.
        * repinfo-input.ads: Likewise.
        * repinfo.adb: Likewise.
        * repinfo.ads: Likewise.
        * repinfo.h: Likewise.
        * restrict.adb: Likewise.
        * restrict.ads: Likewise.
        * rident.ads: Likewise.
        * rtfinal.c: Likewise.
        * rtinit.c: Likewise.
        * rtsfind.adb: Likewise.
        * rtsfind.ads: Likewise.
        * runtime.h: Likewise.
        * s-oscons-tmplt.c: Likewise.
        * sa_messages.adb: Likewise.
        * sa_messages.ads: Likewise.
        * scans.adb: Likewise.
        * scans.ads: Likewise.
        * scil_ll.adb: Likewise.
        * scil_ll.ads: Likewise.
        * scn.adb: Likewise.
        * scn.ads: Likewise.
        * scng.adb: Likewise.
        * scng.ads: Likewise.
        * scos.adb: Likewise.
        * scos.ads: Likewise.
        * scos.h: Likewise.
        * sdefault.ads: Likewise.
        * seh_init.c: Likewise.
        * sem.adb: Likewise.
        * sem.ads: Likewise.
        * sem_aggr.adb: Likewise.
        * sem_aggr.ads: Likewise.
        * sem_attr.adb: Likewise.
        * sem_attr.ads: Likewise.
        * sem_aux.adb: Likewise.
        * sem_aux.ads: Likewise.
        * sem_case.adb: Likewise.
        * sem_case.ads: Likewise.
        * sem_cat.adb: Likewise.
        * sem_cat.ads: Likewise.
        * sem_ch10.adb: Likewise.
        * sem_ch10.ads: Likewise.
        * sem_ch11.adb: Likewise.
        * sem_ch11.ads: Likewise.
        * sem_ch12.adb: Likewise.
        * sem_ch12.ads: Likewise.
        * sem_ch13.adb: Likewise.
        * sem_ch13.ads: Likewise.
        * sem_ch2.adb: Likewise.
        * sem_ch2.ads: Likewise.
        * sem_ch3.adb: Likewise.
        * sem_ch3.ads: Likewise.
        * sem_ch4.adb: Likewise.
        * sem_ch4.ads: Likewise.
        * sem_ch5.adb: Likewise.
        * sem_ch5.ads: Likewise.
        * sem_ch6.adb: Likewise.
        * sem_ch6.ads: Likewise.
        * sem_ch7.adb: Likewise.
        * sem_ch7.ads: Likewise.
        * sem_ch8.adb: Likewise.
        * sem_ch8.ads: Likewise.
        * sem_ch9.adb: Likewise.
        * sem_ch9.ads: Likewise.
        * sem_dim.adb: Likewise.
        * sem_dim.ads: Likewise.
        * sem_disp.adb: Likewise.
        * sem_disp.ads: Likewise.
        * sem_dist.adb: Likewise.
        * sem_dist.ads: Likewise.
        * sem_elab.adb: Likewise.
        * sem_elab.ads: Likewise.
        * sem_elim.adb: Likewise.
        * sem_elim.ads: Likewise.
        * sem_eval.adb: Likewise.
        * sem_eval.ads: Likewise.
        * sem_intr.adb: Likewise.
        * sem_intr.ads: Likewise.
        * sem_mech.adb: Likewise.
        * sem_mech.ads: Likewise.
        * sem_prag.adb: Likewise.
        * sem_prag.ads: Likewise.
        * sem_res.adb: Likewise.
        * sem_res.ads: Likewise.
        * sem_scil.adb: Likewise.
        * sem_scil.ads: Likewise.
        * sem_smem.adb: Likewise.
        * sem_smem.ads: Likewise.
        * sem_type.adb: Likewise.
        * sem_type.ads: Likewise.
        * sem_util.adb: Likewise.
        * sem_util.ads: Likewise.
        * sem_warn.adb: Likewise.
        * sem_warn.ads: Likewise.
        * set_targ.adb: Likewise.
        * set_targ.ads: Likewise.
        * sfn_scan.adb: Likewise.
        * sfn_scan.ads: Likewise.
        * sigtramp-armdroid.c: Likewise.
        * sigtramp-ios.c: Likewise.
        * sigtramp-qnx.c: Likewise.
        * sigtramp-vxworks.c: Likewise.
        * sigtramp.h: Likewise.
        * sinfo-cn.adb: Likewise.
        * sinfo-cn.ads: Likewise.
        * sinfo.adb: Likewise.
        * sinfo.ads: Likewise.
        * sinput-c.adb: Likewise.
        * sinput-c.ads: Likewise.
        * sinput-d.adb: Likewise.
        * sinput-d.ads: Likewise.
        * sinput-l.adb: Likewise.
        * sinput-l.ads: Likewise.
        * sinput.adb: Likewise.
        * sinput.ads: Likewise.
        * socket.c: Likewise.
        * spark_xrefs.adb: Likewise.
        * spark_xrefs.ads: Likewise.
        * sprint.adb: Likewise.
        * sprint.ads: Likewise.
        * stand.adb: Likewise.
        * stand.ads: Likewise.
        * stringt.adb: Likewise.
        * stringt.ads: Likewise.
        * stringt.h: Likewise.
        * style.adb: Likewise.
        * style.ads: Likewise.
        * styleg.adb: Likewise.
        * styleg.ads: Likewise.
        * stylesw.adb: Likewise.
        * stylesw.ads: Likewise.
        * switch-b.adb: Likewise.
        * switch-b.ads: Likewise.
        * switch-c.adb: Likewise.
        * switch-c.ads: Likewise.
        * switch-m.adb: Likewise.
        * switch-m.ads: Likewise.
        * switch.adb: Likewise.
        * switch.ads: Likewise.
        * symbols.adb: Likewise.
        * symbols.ads: Likewise.
        * sysdep.c: Likewise.
        * table.adb: Likewise.
        * table.ads: Likewise.
        * targext.c: Likewise.
        * targparm.adb: Likewise.
        * targparm.ads: Likewise.
        * tbuild.adb: Likewise.
        * tbuild.ads: Likewise.
        * tempdir.adb: Likewise.
        * tempdir.ads: Likewise.
        * terminals.c: Likewise.
        * tracebak.c: Likewise.
        * tree_gen.adb: Likewise.
        * tree_gen.ads: Likewise.
        * tree_in.adb: Likewise.
        * tree_in.ads: Likewise.
        * tree_io.adb: Likewise.
        * tree_io.ads: Likewise.
        * treepr.adb: Likewise.
        * treepr.ads: Likewise.
        * ttypes.ads: Likewise.
        * types.adb: Likewise.
        * types.ads: Likewise.
        * types.h: Likewise.
        * uintp.adb: Likewise.
        * uintp.ads: Likewise.
        * uintp.h: Likewise.
        * uname.adb: Likewise.
        * uname.ads: Likewise.
        * urealp.adb: Likewise.
        * urealp.ads: Likewise.
        * urealp.h: Likewise.
        * usage.adb: Likewise.
        * usage.ads: Likewise.
        * validsw.adb: Likewise.
        * validsw.ads: Likewise.
        * warnsw.adb: Likewise.
        * warnsw.ads: Likewise.
        * widechar.adb: Likewise.
        * widechar.ads: Likewise.
        * xeinfo.adb: Likewise.
        * xnmake.adb: Likewise.
        * xoscons.adb: Likewise.
        * xr_tabls.adb: Likewise.
        * xr_tabls.ads: Likewise.
        * xref_lib.adb: Likewise.
        * xref_lib.ads: Likewise.
        * xsinfo.adb: Likewise.
        * xsnamest.adb: Likewise.
        * xtreeprs.adb: Likewise.
        * xutil.adb: Likewise.
        * xutil.ads: Likewise.

2020-06-02  Javier Miranda  <miranda@adacore.com>

        * sem_ch3.adb (Analyze_Object_Declaration): Set attribute
        Expansion_Delayed on aggregates that initialize an object that
        has aspect alignment or address clause. Done to allow ther
        initialization by means of multiple assignments.
        * exp_ch3.adb (Expand_N_Object_Declaration): Resolve delayed
        aggregates. This patch complements the patch applied to
        sem_ch3.adb

2020-06-02  Javier Miranda  <miranda@adacore.com>

        * sem_util.adb (Ensure_Minimum_Decoration): New subprogram that
        ensures the minimum decoration required by
        Requires_Transient_Scope() to provide its functionality when the
        entity is not frozen.

2020-06-02  Eric Botcazou  <ebotcazou@adacore.com>

        * exp_ch4.adb (Expand_N_Op_Divide): Remove code dealing with
        the Treat_Fixed_As_Integer flag.
        (Expand_N_Op_Multiply): Likewise.
        * exp_fixd.adb (Build_Divide): Do the division in an integer
        type long enough to hold both operands and convert the result
        to the type of the LHS.  Do not set Treat_Fixed_As_Integer.
        (Build_Multiply): Do not set Treat_Fixed_As_Integer.
        (Build_Rem): Likewise.
        * sem_ch4.adb (Analyze_Arithmetic_Op): Remove code dealing with
        the Treat_Fixed_As_Integer flag.
        (Check_Arithmetic_Pair): Likewise.
        * sinfo.ads (Treat_Fixed_As_Integer): Delete.
        (N_Has_Treat_Fixed_As_Integer): Likewise.
        (Set_Treat_Fixed_As_Integer): Likewise.
        * sinfo.adb (Treat_Fixed_As_Integer): Likewise.
        (Set_Treat_Fixed_As_Integer): Likewise.
        * sprint.ads (Syntax Extensions): Remove '#' special character.
        * sprint.adb (Process_TFAI_RR_Flags): Delete.
        (Sprint_Node_Actual) <N_Op_Divide>: Print '@' manually.
        <N_Op_Multiply>: Likewise.
        <N_Op_Mod>: Do not print '#'.
        <N_Op_Rem>: Likewise.

2020-06-02  Eric Botcazou  <ebotcazou@adacore.com>

        * exp_aggr.adb (Others_Check): In the positional case, use the
        general expression for the comparison only when needed.
        * exp_attr.adb (Expand_Fpt_Attribute;): Use a simple conversion
        to the target type instead of an unchecked conversion to the
        base type to do the range check, as in the other cases.
        (Expand_N_Attribute_Reference) <Attribute_Storage_Size>: Do the
        Max operation in the type of the storage size variable, and use
        Convert_To as in the other cases.
        * tbuild.adb (Convert_To): Do not get rid of an intermediate
        conversion to Universal_Integer here...
        * sem_res.adb  (Simplify_Type_Conversion): ...but here instead.

2020-06-02  Bob Duff  <duff@adacore.com>

        * doc/gnat_ugn/gnat_utility_programs.rst: Update documentation
        for --RM-style-spacing.

2020-06-02  Bob Duff  <duff@adacore.com>

        * doc/gnat_ugn/gnat_utility_programs.rst: Add documentation for
        --[no-]compact switch.

2020-06-02  Eric Botcazou  <ebotcazou@adacore.com>

        * exp_aggr.adb (Build_Array_Aggr_Code): Set the type of the PAT
        on the zero used to clear the array.
        * exp_attr.adb (Expand_N_Attribute_Reference)
        <Attribute_Alignment>: In the CW case, directly convert from the
        alignment's type to the target type if the parent is an
        unchecked conversion.
        * sem_res.adb (Set_String_Literal_Subtype): In the dynamic case,
        use the general expression for the upper bound only when needed.
        Set the base type of the index as the type of the low bound.
        (Simplify_Type_Conversion): Do an intermediate conversion to the
        root type of the target type if the operand is an integer
        literal.
        * tbuild.adb (Convert_To): Get rid of an intermediate conversion
        to Universal_Integer if the inner expression has integer tyoe.
        * libgnat/a-sequio.adb (Byte_Swap): Make use of an equivalent
        static expression in the case statement.

2020-06-02  Thomas Quinot  <quinot@adacore.com>

        * par_sco.adb (Traverse_Degenerate_Subprogram): Set statement
        code to 'X'.
        * scos.ads: Update comment documenting SCO data.

2020-06-02  Gary Dismukes  <dismukes@adacore.com>

        * exp_unst.adb (Register_Subprogram): Test for Address_Taken (in
        addition to the existing test for In_Synchonized_Unit) when
        deciding whether to reset the Reachable flag on all subprograms
        enclosing the subprogram being registered.

2020-06-02  Justin Squirek  <squirek@adacore.com>

        * sem_ch6.adb (Check_Return_Obj_Accessibility): Avoid use of
        parent node pointers so we are not relying on expansion done in
        GNATprove mode.

2020-06-02  Eric Botcazou  <ebotcazou@adacore.com>

        * exp_attr.adb (Expand_N_Attribute_Reference)
        <Attribute_Alignment>: Adjust comment and compare against proper
        type.

2020-06-02  Gary Dismukes  <dismukes@adacore.com>

        * exp_unst.adb (Visit_Node): When visiting array attribute
        nodes, apply Get_Referenced_Object to the attribute prefix, to
        handle prefixes denoting renamed objects by picking up the Etype
        of the renamed object rather than the possibly unconstrained
        nominal subtype of the renaming declaration's Entity.
        * sem_util.ads (Get_Referenced_Object): Update comment to
        clearly indicate that any kind of node can be passed to this
        function.
        * sem_util.adb (Get_Referenced_Object): Add test of Is_Object to
        the condition, to allow for passing names that denote types and
        subtypes.

2020-06-02  Bob Duff  <duff@adacore.com>

        * snames.ads-tmpl: Add comments explaining that enumeration
        types have to be kept in synch with subtypes of Name_Id.

2020-06-02  Piotr Trojanek  <trojanek@adacore.com>

        * sem_util.adb (Check_No_Hidden_State): Remove dead code.

2020-06-02  Eric Botcazou  <ebotcazou@adacore.com>

        * exp_pakd.adb (Expand_Packed_Bit_Reference): Change type of
        reference from Universal_Integer to Standard_Natural.

2020-06-02  Piotr Trojanek  <trojanek@adacore.com>

        * sem_prag.adb (Collect_States_And_Objects): Call itself on
        declaration of nested packages; append abstract states
        one-by-one, so that in recursive call we do not overwrite the
        ones that have been already collected.

2020-06-02  Eric Botcazou  <ebotcazou@adacore.com>

        * exp_atag.ads (Build_Inherit_Predefined_Prims): Change type
        of Num_Predef_Prim parameter from Int to Nat.
        * exp_atag.adb (Build_Range): New procedure.
        (Build_Val): Likewise.
        (Build_CW_Membership): Call Build_Val.
        (Build_Get_Predefined_Prim_Op_Address): Likewise.
        (Build_Inherit_CPP_Prims): Likewise.
        (Build_Get_Prim_Op_Address): Likewise.
        (Build_Set_Predefined_Prim_Op_Address): Likewise.
        (Build_Inherit_Prims): Call Build_Range.
        (Build_Inherit_Predefined_Prims): Likewise.  Change type of
        Num_Predef_Prim parameter from Int to Nat.

2020-06-02  Gary Dismukes  <dismukes@adacore.com>

        * sem_ch3.adb: Two typo fixes.

2020-06-02  Eric Botcazou  <ebotcazou@adacore.com>

        * sem_ch3.adb (Replace_Discriminants): Preserve the Etype of the
        Name of N_Variant_Part nodes when rewriting it.

2020-06-02  Eric Botcazou  <ebotcazou@adacore.com>

        * sem_ch3.adb (Signed_Integer_Type_Declaration): Change the type
        of the bounds from Universal_Integer to Implicit_Base.

2020-06-02  Arnaud Charlet  <charlet@adacore.com>

        * bcheck.adb, binde.adb, bindo-diagnostics.adb, checks.adb,
        exp_aggr.adb, exp_ch3.adb, exp_ch4.adb, exp_ch7.adb,
        exp_ch9.adb, gnatname.adb, sem_case.adb, sem_ch13.adb,
        sem_ch5.adb, sem_prag.adb, sem_util.adb, uintp.adb, urealp.adb,
        xoscons.adb, xr_tabls.adb, xref_lib.adb: Initialize objects more
        explicitly and add corresponding assertions. Remove dead code.
        Also add a few Annotate pragmas to help static analysis.
        * libgnat/a-caldel.adb, libgnat/a-calend.adb,
        libgnat/a-ngcoty.adb, libgnat/a-ngelfu.adb,
        libgnat/a-ngrear.adb, libgnat/a-strfix.adb,
        libgnat/g-calend.adb, libgnat/g-catiio.adb,
        libgnat/g-comlin.adb, libgnat/g-debpoo.adb,
        libgnat/g-dirope.adb, libgnat/g-hesorg.adb,
        libgnat/g-pehage.adb, libgnat/g-socket.adb, libgnat/i-cobol.adb,
        libgnat/s-dwalin.adb, libgnat/s-dwalin.ads,
        libgnat/s-fatgen.adb, libgnat/s-gearop.adb,
        libgnat/s-genbig.adb, libgnat/s-imgrea.adb,
        libgnat/s-os_lib.adb, libgnat/s-rannum.adb,
        libgnat/s-regpat.adb, libgnat/s-trasym__dwarf.adb,
        libgnat/s-valrea.adb: Ditto.

2020-06-02  Eric Botcazou  <ebotcazou@adacore.com>

        * sem_ch3.adb (Replace_Components): Rename into...
        (Replace_Discriminants): ...this.  Replace girder discriminants
        with non-girder ones.  Do not replace components.
        * sem_ch13.adb (Check_Record_Representation_Clause): Deal with
        non-girder discriminants correctly.

2020-06-02  Piotr Trojanek  <trojanek@adacore.com>

        * lib-xref-spark_specific.adb (Create_Heap): use a new variant
        of Name_Enter to directly converts String to Make_Id.

2020-06-02  Gary Dismukes  <dismukes@adacore.com>

        * exp_attr.adb, par-ch4.adb, par-util.adb, scans.ads, scng.adb,
        sem_attr.adb, sem_ch4.adb, sinfo.ads: Typo corrections and minor
        reformatting.

2020-06-02  Arnaud Charlet  <charlet@adacore.com>

        * snames.ads-tmpl (Name_Img, Attribute_Img): Make it an
        attribute returning renamable functions.

2020-06-02  Yannick Moy  <moy@adacore.com>

        * sem_prag.adb, sem_prag.ads (Set_Overflow_Mode): New procedure
        to set overflow mode.

2020-06-02  Piotr Trojanek  <trojanek@adacore.com>

        * contracts.adb, einfo.adb, exp_ch9.adb, sem_ch12.adb,
        sem_ch4.adb, sem_ch7.adb, sem_ch8.adb, sem_elab.adb,
        sem_type.adb, sem_util.adb: Reuse Is_Package_Or_Generic_Package
        where possible (similarly, reuse Is_Concurrent_Type if it was
        possible in the same expressions).

2020-05-30  Arnaud Charlet  <charlet@adacore.com>

        * Makefile.rtl (ADA_INCLUDE_SRCS): Replace Makefile.adalib by
        libada.gpr and associated project files.
        (g-debpoo.o): Add missing rule to ensure subprograms are not reordered.
        (setup-rts): Add generation of libgnat/libgnarl.lst.
        (LIBGNAT_SRCS): Remove thread.c which is part of libgnarl.
        * tracebak.c, tb-gcc.c: Merged the two files to simplify dependencies.
        * libgnarl/libgnarl.gpr, libgnat/libada.gpr,
        libgnat/libgnat.gpr, libgnat/libgnat_common.gpr: New files.
        * doc/gnat_ugn/the_gnat_compilation_model.rst: Makefile.adalib
        replaced by libada.gpr.
        * libgnat/system-mingw.ads: Remove obsolete comment.
        * gcc-interface/Makefile.in: Remove dependency on tb-gcc.c.

2020-05-27  Martin Liska  <mliska@suse.cz>

        * gnatvsn.ads: Bump Library_Version to 11.

2020-05-26  Eric Botcazou  <ebotcazou@adacore.com>

        PR ada/95333
        * gcc-interface/decl.c (gnat_to_gnu_param): Never make a variant of
        the type.

2020-05-26  Alexandre Oliva  <oliva@adacore.com>

        * gcc-interface/lang-specs.h (ADA_DUMPS_OPTIONS): Define in
        terms of DUMPS_OPTIONS.  Replace occurrences of %{d*} %:dumps
        with it.

2020-05-26  Alexandre Oliva  <oliva@adacore.com>

        * gcc-interface/lang-specs.h: Drop auxbase and auxbase-strip.
        Use %:dumps instead of -dumpbase.  Add %w for implicit .s
        primary output.
        * switch.adb (Is_Internal_GCC_Switch): Recognize dumpdir and
        dumpbase-ext.  Drop auxbase and auxbase-strip.

2020-05-25  Yannick Moy  <moy@adacore.com>

        * sem_util.adb (Check_No_Hidden_State): Stop propagation at
        first block/task/entry.

2020-05-25  Yannick Moy  <moy@adacore.com>

        * doc/gnat_rm/implementation_defined_pragmas.rst: Document
        changes to pragmas Compile_Time_Error/Compile_Time_Warning.
        * gnat_rm.texi: Regenerate.
        * libgnat/g-bytswa.adb: Change uses of Compile_Time_Error to
        Compile_Time_Warning, as the actual expression may not always be
        known statically.
        * sem_prag.adb (Analyze_Pragma): Handle differently pragma
        Compile_Time_Error in both compilation and in GNATprove mode.
        (Validate_Compile_Time_Warning_Or_Error): Issue an error or
        warning when the expression is not known at compile time.
        * usage.adb: Add missing documentation for warning switches _c
        and _r.
        * warnsw.ads: Update comment.

2020-05-25  Justin Squirek  <squirek@adacore.com>

        * sem_ch6.adb (Check_Return_Obj_Accessibility): Use original
        node to avoid looking at expansion done in GNATprove mode.

2020-05-25  Eric Botcazou  <ebotcazou@adacore.com>

        * gcc-interface/decl.c (gnat_to_gnu_entity): Add new local variable
        and use it throughout the function.
        <E_Variable>: Rename local variable and adjust accordingly.  In the
        case of a renaming, materialize the entity if the renamed object is
        an N_Expression_With_Actions node.
        <E_Procedure>: Use Alias accessor function consistently.

2020-05-25  Eric Botcazou  <ebotcazou@adacore.com>

        * gcc-interface/misc.c (get_array_bit_stride): Get to the debug type,
        if any, before calling gnat_get_array_descr_info.

2020-05-25  Eric Botcazou  <ebotcazou@adacore.com>

        * gcc-interface/decl.c (gnat_to_gnu_entity) <E_Record_Type>: Tidy up.
        (build_variant_list): Add GNAT_VARIANT_PART parameter and annotate its
        variants if it is present.  Adjust the recursive call by passing the
        variant subpart of variants, if any.
        (copy_and_substitute_in_layout): Rename GNU_SUBST_LIST to SUBST_LIST
        and adjust throughout.  For a type, pass the variant part in the
        call to build_variant_list.

2020-05-25  Eric Botcazou  <ebotcazou@adacore.com>

        * gcc-interface/decl.c (gnat_to_gnu_component_type): Cap the alignment
        of the component type according to the component size.

2020-05-25  Eric Botcazou  <ebotcazou@adacore.com>

        * gcc-interface/decl.c (gnat_to_gnu_entity) <E_Array_Type>: Add a
        description of the various types associated with the unconstrained
        type.  Declare the fat pointer earlier.  Set the current function
        as context on the template type, and the fat pointer type on the
        array type.  Always mark the fat pointer type as artificial and set
        it as the context for the pointer type to the array.  Also reuse
        GNU_ENTITY_NAME.  Finish up the unconstrained type at the very end.
        * gcc-interface/misc.c (gnat_get_array_descr_info): Do not handle
        fat pointer types and tidy up accordingly.
        * gcc-interface/utils.c (build_unc_object_type): Do not set the
        context on the template type.
        (gnat_pushdecl): Mark the canonical fat pointer types as artificial.

2020-05-25  Eric Botcazou  <ebotcazou@adacore.com>

        * gcc-interface/gigi.h (operand_type): New static inline function.
        * gcc-interface/trans.c (gnat_to_gnu): Do not suppress conversion
        to the resulty type at the end for array types.
        * gcc-interface/utils2.c (build_binary_op) <MODIFY_EXPR>: Do not
        remove conversions between array types on the LHS.

2020-05-12  Eric Botcazou  <ebotcazou@adacore.com>

        * sem_aggr.ads (Is_Single_Aggregate): New function.
        * sem_aggr.adb (Is_Others_Aggregate): Use local variable.
        (Is_Single_Aggregate): New function to recognize an aggregate with
        a single association containing a single choice.
        * fe.h (Is_Others_Aggregate): Delete.
        (Is_Single_Aggregate): New declaration.
        * gcc-interface/trans.c (gnat_to_gnu) <N_Assignment_Statement>: Call
        Is_Single_Aggregate instead of Is_Others_Aggregate.

2020-05-12  Eric Botcazou  <ebotcazou@adacore.com>

        PR ada/95035
        * gcc-interface/utils.c (packable_type_hasher::equal): Also compare
        the scalar storage order.
        (hash_packable_type): Also hash the scalar storage order.
        (hash_pad_type): Likewise.

2020-05-09  Eric Botcazou  <ebotcazou@adacore.com>

        * gcc-interface/*.[ch]: Update copyright year.

2020-05-09  Eric Botcazou  <ebotcazou@adacore.com>

        * gcc-interface/trans.c (Attribute_to_gnu) <Attr_Access>: Assert that
        the prefix is not a type.

2020-05-09  Eric Botcazou  <ebotcazou@adacore.com>

        * gcc-interface/ada-tree.h (TYPE_PACKED_ARRAY_TYPE_P): Rename into...
        (TYPE_BIT_PACKED_ARRAY_TYPE_P): ...this.
        (TYPE_IS_PACKED_ARRAY_TYPE_P): Rename into...
        (BIT_PACKED_ARRAY_TYPE_P): ...this.
        (TYPE_IMPL_PACKED_ARRAY_P): Adjust to above renaming.
        * gcc-interface/gigi.h (maybe_pad_type): Remove IS_USER_TYPE parameter.
        * gcc-interface/decl.c (gnat_to_gnu_entity) <E_Variable>: Adjust call
        to maybe_pad_type.
        <E_Ordinary_Fixed_Point_Type>: Remove const qualifiers for tree.
        <E_Signed_Integer_Subtype>: Remove redundant test and redundant call
        to associate_original_type_to_packed_array.  Turn test into assertion.
        Call associate_original_type_to_packed_array and modify gnu_entity_name
        accordingly.  Explicitly set the parallel type for GNAT encodings.
        Call create_type_decl in the misaligned case before maybe_pad_type.
        <E_Array_Type>: Do not use the name of the implementation type for a
        packed array when not using GNAT encodings.
        <E_Array_Subtype>: Move around setting flags. Use the result of the
        call to associate_original_type_to_packed_array for gnu_entity_name.
        <E_Record_Subtype>: Create XVS type and XVZ variable only if debug
        info is requested for the type.
        Call create_type_decl if a padded type was created for a type entity.
        (gnat_to_gnu_component_type): Use local variable and adjust calls to
        maybe_pad_type.
        (gnat_to_gnu_subprog_type): Adjust call to maybe_pad_type.
        (gnat_to_gnu_field): Likewise.
        (validate_size): Adjust to renaming of macro.
        (set_rm_size): Likewise.
        (associate_original_type_to_packed_array): Adjust return type and
        return the name of the original type if GNAT encodings are not used.
        * gcc-interface/misc.c (gnat_get_debug_typ): Remove obsolete stuff.
        (gnat_get_fixed_point_type_info): Remove const qualifiers for tree.
        (gnat_get_array_descr_info): Likewise and set variables lazily.
        Remove call to maybe_debug_type.  Simplify a few computations.
        (enumerate_modes): Remove const qualifier for tree.
        * gcc-interface/utils.c (make_type_from_size): Adjust to renaming.
        (maybe_pad_type): Remove IS_USER_TYPE parameter and adjust.  Remove
        specific code for implementation types for packed arrays.
        (compute_deferred_decl_context): Remove const qualifier for tree.
        (convert): Adjust call to maybe_pad_type.
        (unchecked_convert): Likewise.
        * gcc-interface/utils2.c (is_simple_additive_expressio): Likewise.

2020-05-09  Eric Botcazou  <ebotcazou@adacore.com>

        * gcc-interface/utils2.c (build_binary_op) <ARRAY_RANGE_REF>: Use
        build_nonshared_array_type to build the common type and declare it.

2020-05-09  Eric Botcazou  <ebotcazou@adacore.com>

        * gcc-interface/misc.c (gnat_init_gcc_eh): Do not override the user
        for -fnon-call-exceptions in default mode.

2020-05-09  Eric Botcazou  <ebotcazou@adacore.com>

        * gcc-interface/trans.c (lvalue_required_p) <N_Selected_Component>:
        Merge with N_Slice.
        <N_Allocator>: Move to...
        (lvalue_for_aggregate_p): ...here.  New function.
        (Identifier_to_gnu): For an identifier with aggregate type, also
        call lvalue_for_aggregate_p if lvalue_required_p returned false
        before substituting the identifier with the constant.

2020-05-09  Eric Botcazou  <ebotcazou@adacore.com>

        * gcc-interface/trans.c (gnat_to_gnu): Do not wrap boolean values if
        they appear in any kind of attribute references.

2020-05-09  Eric Botcazou  <ebotcazou@adacore.com>

        * gcc-interface/trans.c (gnat_to_gnu) <N_Assignment_Statement>: Deal
        with qualified "others" aggregates in the memset case.

2020-05-09  Eric Botcazou  <ebotcazou@adacore.com>

        * gcc-interface/decl.c (gnat_to_gnu_param): Also back-annotate the
        mechanism in the case of an Out parameter only passed by copy-out.

2020-05-09  Eric Botcazou  <ebotcazou@adacore.com>

        * gcc-interface/gigi.h (change_qualified_type): Move around.
        (maybe_vector_array): Likewise.
        (maybe_padded_object): New static line function.
        * gcc-interface/trans.c (Attribute_to_gnu) <Attr_Component_Size>:
        Remove useless code.
        <Attr_Null_Parameter>: Remove obsolete code.
        (Call_to_gn): Likewise.  Use maybe_padded_object to remove padding.
        (gnat_to_gnu): Likewise.
        <N_String_Literal>: Do not add a useless null character at the end.
        <N_Indexed_Component>: Likewise and remove obsolete code.
        (add_decl_expr): Likewise.
        (maybe_implicit_deref): Likewise.
        * gcc-interface/utils.c (maybe_unconstrained_array): Likewise.
        * gcc-interface/utils2.c (gnat_invariant_expr): Likewise.

2020-05-09  Eric Botcazou  <ebotcazou@adacore.com>

        * gcc-interface/utils2.c: Include builtins.h.
        (known_alignment) <ADDR_EXPR>: Use DECL_ALIGN for DECL_P operands
        and get_object_alignment for the rest.

2020-05-08  Eric Botcazou  <ebotcazou@adacore.com>

        * gcc-interface/decl.c (gnat_to_gnu_entity) <E_Variable>: Force at
        least the unit size for an aliased object of a constrained nominal
        subtype whose size is variable.

2020-05-08  Eric Botcazou  <ebotcazou@adacore.com>

        * gcc-interface/decl.c (gnat_to_gnu_entity) <E_Array_Subtype>: Deal
        with artificial maximally-sized types designed by access types.
        * gcc-interface/utils.c (packable_type_hash): New structure.
        (packable_type_hasher): Likewise.
        (packable_type_hash_table): New hash table.
        (init_gnat_utils): Initialize it.
        (destroy_gnat_utils): Destroy it.
        (packable_type_hasher::equal): New method.
        (hash_packable_type): New static function.
        (canonicalize_packable_type): Likewise.
        (make_packable_type): Make sure not to use too small a type for the
        size of the new fields.  Canonicalize the type if it is named.

2020-05-08  Eric Botcazou  <ebotcazou@adacore.com>

        * gcc-interface/trans.c (Raise_Error_to_gnu): Always compute a lower
        bound and an upper bound for use by the -gnateE switch for range and
        comparison operators.

2020-05-08  Eric Botcazou  <ebotcazou@adacore.com>

        * gcc-interface/decl.c (gnat_to_gnu_param): Do not make a variant of
        the type in LTO mode.

2020-05-04  Mikael Pettersson  <mikpelinux@gmail.com>

        PR bootstrap/94918
        * mingw32.h: Prevent windows.h from including emmintrin.h on Cygwin64.
        * s-oscons-tmplt.c (Serial_Port_Descriptor): Use System.Win32.HANDLE
        also on Cygwin.

2020-03-11  Richard Wai  <richard@annexi-strayline.com>

        * gcc-interface/decl.c (gnat_to_gnu_entity): Also test Is_Public on
        the Alias of the entitiy, if it is present, in the main assertion.

2020-02-06  Alexandre Oliva <oliva@adacore.com>

        * raise-gcc.c (personality_body) [__ARM_EABI_UNWINDER__]:
        Initialize barrier_cache.sp when ending phase1.

2020-01-04  Eric Botcazou  <ebotcazou@adacore.com>

        * gnatvsn.ads: Bump copyright year.

2020-01-01  Jakub Jelinek  <jakub@redhat.com>

        Update copyright years.

        * gnat_ugn.texi: Bump @copying's copyright year.
        * gnat_rm.texi: Likewise.
\f
Copyright (C) 2020 Free Software Foundation, Inc.

Copying and distribution of this file, with or without modification,
are permitted in any medium without royalty provided the copyright
notice and this notice are preserved.