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

2021-12-07  Harald Anlauf  <anlauf@gmx.de>

        PR fortran/103607
        * frontend-passes.c (do_subscript): Ensure that array bounds are
        of type INTEGER before performing checks on array subscripts.

2021-12-07  Harald Anlauf  <anlauf@gmx.de>

        PR fortran/103588
        * array.c (gfc_ref_dimen_size): Do not generate internal error on
        failed simplification of stride expression; just return failure.

2021-12-07  Harald Anlauf  <anlauf@gmx.de>

        PR fortran/103591
        * match.c (match_case_selector): Check type of upper bound in case
        range.

2021-12-04  Tobias Burnus  <tobias@codesourcery.com>

        * dump-parse-tree.c (show_omp_clauses): Handle
        weak/compare/fail clause.
        * gfortran.h (gfc_omp_clauses): Add weak, compare, fail.
        * openmp.c (enum omp_mask1, gfc_match_omp_clauses,
        OMP_ATOMIC_CLAUSES): Update for new clauses.
        (gfc_match_omp_atomic): Update for 5.1 atomic changes.
        (is_conversion): Support widening in one go.
        (is_scalar_intrinsic_expr): New.
        (resolve_omp_atomic): Update for 5.1 atomic changes.
        * parse.c (parse_omp_oacc_atomic): Update for compare.
        * resolve.c (gfc_resolve_blocks): Update asserts.
        * trans-openmp.c (gfc_trans_omp_atomic): Handle new clauses.

2021-12-03  Harald Anlauf  <anlauf@gmx.de>
            Steven G. Kargl  <kargl@gcc.gnu.org>

        PR fortran/103505
        * array.c (match_array_element_spec): Try to simplify array
        element specifications to improve early checking.
        * expr.c (gfc_try_simplify_expr): New.  Try simplification of an
        expression via gfc_simplify_expr.  When an error occurs, roll
        back.
        * gfortran.h (gfc_try_simplify_expr): Declare it.

2021-12-03  Tobias Burnus  <tobias@codesourcery.com>

        * trans-stmt.c (gfc_trans_allocate): Set e3_has_nodescriptor to true
        only for non-named arrays.

2021-12-02  Chung-Lin Tang  <cltang@codesourcery.com>

        PR fortran/90030
        * trans-openmp.c (gfc_omp_finish_clause): Remove fold_convert to pointer
        to char_type_node, add gcc_assert of POINTER_TYPE_P.
        (gfc_trans_omp_array_section): Likewise.
        (gfc_trans_omp_clauses): Likewise.

2021-11-30  Harald Anlauf  <anlauf@gmx.de>

        PR fortran/102787
        * array.c (expand_constructor): When encountering a constant array
        expression or array section within a constructor, simplify it to
        enable better expansion.

2021-11-30  Harald Anlauf  <anlauf@gmx.de>

        PR fortran/103473
        * simplify.c (simplify_minmaxloc_nodim): Avoid NULL pointer
        dereference when shape is not set.

2021-11-30  Harald Anlauf  <anlauf@gmx.de>
            Steven G. Kargl  <kargl@gcc.gnu.org>

        PR fortran/101565
        * check.c (gfc_check_image_index): Verify that SUB argument to
        IMAGE_INDEX is of type integer.

2021-11-30  Richard Biener  <rguenther@suse.de>

        * frontend-passes.c (gfc_expr_walker): Add comment to
        indicate tail recursion.

2021-11-30  Richard Biener  <rguenther@suse.de>

        * target-memory.c (gfc_element_size): Remove unreachable return.

2021-11-30  Thomas Schwinge  <thomas@codesourcery.com>

        * openmp.c (resolve_oacc_loop_blocks): Remove "gang reduction on
        an orphan loop" checking.
        (oacc_is_parallel, oacc_is_kernels, oacc_is_serial)
        (oacc_is_compute_construct): Remove.

2021-11-30  Frederik Harwath  <frederik@codesourcery.com>
            Thomas Schwinge  <thomas@codesourcery.com>

        * openmp.c (oacc_is_parallel_or_serial): Evolve into...
        (oacc_is_compute_construct): ... this function.
        (resolve_oacc_loop_blocks): Use "oacc_is_compute_construct"
        instead of "oacc_is_parallel_or_serial" for checking that a
        loop is not orphaned.

2021-11-30  Kwok Cheung Yeung  <kcy@codesourcery.com>
            Thomas Schwinge  <thomas@codesourcery.com>

        * openmp.c (oacc_is_serial, oacc_is_parallel_or_serial): New.
        (resolve_oacc_loop_blocks): Use oacc_is_parallel_or_serial instead of
        oacc_is_parallel.

2021-11-30  Cesar Philippidis  <cesar@codesourcery.com>
            Thomas Schwinge  <thomas@codesourcery.com>

        * openmp.c (oacc_is_parallel, oacc_is_kernels): New 'static'
        functions.
        (resolve_oacc_loop_blocks): Emit an error on orphan OpenACC gang
        reductions.

2021-11-30  Richard Biener  <rguenther@suse.de>

        * decl.c (gfc_insert_parameter_exprs): Only return after
        resetting type_param_spec_list.

2021-11-30  Richard Biener  <rguenther@suse.de>

        * frontend-passes.c (gfc_expr_walker): Remove unreachable
        break.
        * scanner.c (skip_fixed_comments): Remove unreachable
        gcc_unreachable.
        * trans-expr.c (gfc_expr_is_variable): Refactor to make
        control flow more obvious.

2021-11-29  Eric Gallager  <egallager@gcc.gnu.org>

        PR other/103021
        * Make-lang.in: Use ETAGS variable in TAGS target.

2021-11-26  Harald Anlauf  <anlauf@gmx.de>

        PR fortran/103411
        * check.c (gfc_check_reshape): Improve check of size of source
        array for the RESHAPE intrinsic against the given shape when pad
        is not given, and shape is a parameter.  Try other simplifications
        of shape.

2021-11-23  Harald Anlauf  <anlauf@gmx.de>

        PR fortran/103392
        * simplify.c (simplify_bound): Do not try to simplify
        LBOUND/UBOUND for arrays with POINTER or ALLOCATABLE attribute.

2021-11-23  Harald Anlauf  <anlauf@gmx.de>

        PR fortran/87711
        PR fortran/87851
        * trans-array.c (arg_evaluated_for_scalarization): Add LEN_TRIM to
        list of intrinsics for which an optional KIND argument needs to be
        removed before scalarization.

2021-11-21  Jakub Jelinek  <jakub@redhat.com>

        PR debug/103315
        * trans-types.c (gfc_get_array_descr_info): Use DW_OP_deref_size 1
        instead of DW_OP_deref for DW_AT_rank.

2021-11-21  Harald Anlauf  <anlauf@gmx.de>
            Steven G. Kargl  <kargl@gcc.gnu.org>

        PR fortran/99061
        * trans-intrinsic.c (gfc_lookup_intrinsic): Helper function for
        looking up gfortran builtin intrinsics.
        (gfc_conv_intrinsic_atrigd): Use it.
        (gfc_conv_intrinsic_cotan): Likewise.
        (gfc_conv_intrinsic_cotand): Likewise.
        (gfc_conv_intrinsic_atan2d): Likewise.

2021-11-18  Harald Anlauf  <anlauf@gmx.de>
            Steven G. Kargl  <kargl@gcc.gnu.org>

        PR fortran/101329
        * check.c (is_c_interoperable): Reject NULL() as it is not
        interoperable.

2021-11-16  Harald Anlauf  <anlauf@gmx.de>

        PR fortran/103286
        * resolve.c (resolve_select): Choose appropriate range limit to
        avoid NULL pointer dereference when generating error message.

2021-11-16  Mikael Morin  <mikael@gcc.gnu.org>

        * interface.c (gfc_dummy_arg_get_name): New function.
        * gfortran.h (gfc_dummy_arg_get_name): Declare it.
        * trans-array.c (arg_evaluated_for_scalarization): Pass a dummy
        argument wrapper as argument instead of an actual argument
        and an index number.  Check it’s non-NULL.  Use its name
        to identify it.
        (gfc_walk_elemental_function_args): Update call to
        arg_evaluated for scalarization.  Remove argument counting.

2021-11-16  Mikael Morin  <mikael@gcc.gnu.org>

        * gfortran.h (gfc_actual_arglist::missing_arg_type): Remove.
        * interface.c (gfc_compare_actual_formal): Remove
        missing_arg_type initialization.
        * intrinsic.c (sort_actual): Ditto.
        * trans-expr.c (gfc_conv_procedure_call): Use associated_dummy
        and gfc_dummy_arg_get_typespec to get the dummy argument type.

2021-11-16  Mikael Morin  <mikael@gcc.gnu.org>

        * interface.c (gfc_dummy_arg_get_typespec,
        gfc_dummy_arg_is_optional): New functions.
        * gfortran.h (gfc_dummy_arg_get_typespec,
        gfc_dummy_arg_is_optional): Declare them.
        * trans.h (gfc_ss_info::dummy_arg): Use the wrapper type
        as declaration type.
        * trans-array.c (gfc_scalar_elemental_arg_saved_as_reference):
        use gfc_dummy_arg_get_typespec function to get the type.
        (gfc_walk_elemental_function_args): Remove proc_ifc argument.
        Get info about the dummy arg using the associated_dummy field.
        * trans-array.h (gfc_walk_elemental_function_args): Update declaration.
        * trans-intrinsic.c (gfc_walk_intrinsic_function):
        Update call to gfc_walk_elemental_function_args.
        * trans-stmt.c (gfc_trans_call): Ditto.
        (get_proc_ifc_for_call): Remove.

2021-11-16  Mikael Morin  <mikael@gcc.gnu.org>

        * gfortran.h (gfc_dummy_arg_kind, gfc_dummy_arg): New.
        (gfc_actual_arglist): New field associated_dummy.
        (gfc_intrinsic_arg): Remove field actual.
        * interface.c (get_nonintrinsic_dummy_arg): New.
        (gfc_compare_actual): Initialize associated_dummy.
        * intrinsic.c (get_intrinsic_dummy_arg): New.
        (sort_actual):  Add argument vectors.
        Use loops with indices on argument vectors.
        Initialize associated_dummy.

2021-11-16  Mikael Morin  <mikael@gcc.gnu.org>

        * intrinsic.c (sort_actual): initialise variable and use it earlier.

2021-11-15  Tobias Burnus  <tobias@codesourcery.com>

        * openmp.c (OMP_TARGET_CLAUSES): Add thread_limit.
        * trans-openmp.c (gfc_split_omp_clauses): Add thread_limit also to
        teams.

2021-11-12  Tobias Burnus  <tobias@codesourcery.com>

        * parse.c (decode_omp_directive): Fix permitting 'nowait' for some
        combined directives, add missing 'omp end ... loop'.
        (gfc_ascii_statement): Fix ST_OMP_END_TEAMS_LOOP result.
        * openmp.c (resolve_omp_clauses): Add missing combined loop constructs
        case values to the 'if(directive-name: ...)' check.
        * trans-openmp.c (gfc_split_omp_clauses): Put nowait on target if
        first leaf construct accepting it.

2021-11-12  Martin Jambor  <mjambor@suse.cz>

        * trans-types.c (gfc_get_array_descr_info): Use build_debug_expr_decl
        instead of building DEBUG_EXPR_DECL manually.

2021-11-12  Mikael Morin  <mikael@gcc.gnu.org>

        PR fortran/97896
        * intrinsic.c (add_sym_4ind): Remove.
        (add_functions): Use add_sym4 instead of add_sym4ind.
        Don’t special case the index intrinsic.
        * iresolve.c (gfc_resolve_index_func): Use the individual arguments
        directly instead of the full argument list.
        * intrinsic.h (gfc_resolve_index_func): Update the declaration
        accordingly.
        * trans-decl.c (gfc_get_extern_function_decl): Don’t modify the
        list of arguments in the case of the index intrinsic.
        * trans-array.h (gfc_get_intrinsic_for_expr,
        gfc_get_proc_ifc_for_expr): New.
        * trans-array.c (gfc_get_intrinsic_for_expr,
        arg_evaluated_for_scalarization): New.
        (gfc_walk_elemental_function_args): Add intrinsic procedure
        as argument.  Count arguments.  Check arg_evaluated_for_scalarization.
        * trans-intrinsic.c (gfc_walk_intrinsic_function): Update call.
        * trans-stmt.c (get_intrinsic_for_code): New.
        (gfc_trans_call): Update call.

2021-11-12  Jakub Jelinek  <jakub@redhat.com>

        * types.def (BT_FN_VOID_UINT_UINT): Remove.
        (BT_FN_BOOL_UINT_UINT_UINT_BOOL): New.

2021-11-11  Tobias Burnus  <tobias@codesourcery.com>

        * gfortran.h (struct gfc_omp_clauses): Rename num_teams to
        num_teams_upper, add num_teams_upper.
        * dump-parse-tree.c (show_omp_clauses): Update to handle
        lower-bound num_teams clause.
        * frontend-passes.c (gfc_code_walker): Likewise
        * openmp.c (gfc_free_omp_clauses, gfc_match_omp_clauses,
        resolve_omp_clauses): Likewise.
        * trans-openmp.c (gfc_trans_omp_clauses, gfc_split_omp_clauses,
        gfc_trans_omp_target): Likewise.

2021-11-11  Jakub Jelinek  <jakub@redhat.com>

        * trans-openmp.c (gfc_trans_omp_clauses): Use
        OMP_CLAUSE_NUM_TEAMS_UPPER_EXPR instead of OMP_CLAUSE_NUM_TEAMS_EXPR.

2021-11-10  Harald Anlauf  <anlauf@gmx.de>

        PR fortran/103137
        PR fortran/103138
        * check.c (gfc_check_shape): Avoid NULL pointer dereference on
        missing ref.
        * simplify.c (gfc_simplify_cshift): Avoid NULL pointer dereference
        when shape not set.
        (gfc_simplify_transpose): Likewise.

2021-11-09  Bernhard Reutner-Fischer  <aldot@gcc.gnu.org>

        PR fortran/68800
        * class.c (generate_finalization_wrapper): Do not leak
        finalization wrappers if they will not be used.
        * expr.c (gfc_free_actual_arglist): Formatting fix.
        * gfortran.h (gfc_free_symbol): Pass argument by reference.
        (gfc_release_symbol): Likewise.
        (gfc_free_namespace): Likewise.
        * symbol.c (gfc_release_symbol): Adjust acordingly.
        (free_components): Set procedure pointer components
        of derived types to NULL after freeing.
        (free_tb_tree): Likewise.
        (gfc_free_symbol): Set sym to NULL after freeing.
        (gfc_free_namespace): Set namespace to NULL after freeing.

2021-11-09  Martin Liska  <mliska@suse.cz>

        * symbol.c (gfc_get_ultimate_derived_super_type): Remove.

2021-11-09  Aldy Hernandez  <aldyh@redhat.com>

        * misc.c (gfc_dummy_typename): Make sure ts->kind is
        non-negative.

2021-11-07  Thomas Koenig  <tkoenig@gcc.gnu.org>

        * intrinsic.c (add_subroutines): Change keyword "operator"
        to the correct one, "operation".
        * check.c (gfc_check_co_reduce): Change OPERATOR to
        OPERATION in error messages.
        * intrinsic.texi: Change OPERATOR to OPERATION in
        documentation.

2021-11-07  Sandra Loosemore  <sandra@codesourcery.com>

        * interface.c (gfc_compare_actual_formal): Continue checking
        all arguments after encountering an error.
        * intrinsic.c (do_ts29113_check): Likewise.
        * resolve.c (resolve_operator): Continue resolving on op2 error.

2021-11-06  Harald Anlauf  <anlauf@gmx.de>

        PR fortran/102715
        * decl.c (add_init_expr_to_sym): Reject rank mismatch between
        array and its initializer.

2021-11-05  Harald Anlauf  <anlauf@gmx.de>

        PR fortran/102817
        * expr.c (simplify_parameter_variable): Copy shape of referenced
        subobject when simplifying.

2021-11-05  Harald Anlauf  <anlauf@gmx.de>

        PR fortran/69419
        * match.c (gfc_match_common): Check array spec of a symbol in a
        COMMON object list and reject it if it is a coarray.

2021-11-05  Bernhard Reutner-Fischer  <aldot@gcc.gnu.org>

        PR fortran/100972
        * decl.c (gfc_match_implicit_none): Fix typo in warning.
        * resolve.c (resolve_unknown_f): Reject external procedures
        without explicit EXTERNAL attribute whe IMPLICIT none (external)
        is in effect.

2021-11-05  Bernhard Reutner-Fischer  <aldot@gcc.gnu.org>

        * decl.c (gfc_insert_kind_parameter_exprs): Make static.
        * expr.c (gfc_build_init_expr): Make static
        (gfc_build_default_init_expr): Move below its static helper.
        * gfortran.h (gfc_insert_kind_parameter_exprs, gfc_add_saved_common,
        gfc_add_common, gfc_use_derived_tree, gfc_free_charlen,
        gfc_get_ultimate_derived_super_type,
        gfc_resolve_oacc_parallel_loop_blocks, gfc_build_init_expr,
        gfc_iso_c_sub_interface): Delete.
        * symbol.c (gfc_new_charlen, gfc_get_derived_super_type): Make
        static.

2021-11-05  Sandra Loosemore  <sandra@codesourcery.com>

        PR fortran/35276
        * gfortran.texi (Mixed-Language Programming): Talk about C++,
        and how to link.

2021-11-04  Sandra Loosemore  <sandra@codesourcery.com>

        * gfortran.texi (Projects): Add bullet for helping with
        incomplete standards compliance.
        (Proposed Extensions): Delete section.

2021-11-04  Sandra Loosemore  <sandra@codesourcery.com>

        * intrinsic.texi (Introduction to Intrinsics): Genericize
        references to standard versions.
        * invoke.texi (-fall-intrinsics): Likewise.
        (-fmax-identifier-length=): Likewise.

2021-11-04  Sandra Loosemore  <sandra@codesourcery.com>

        * gfortran.texi (Interoperability with C): Copy-editing.  Add
        more index entries.
        (Intrinsic Types): Likewise.
        (Derived Types and struct): Likewise.
        (Interoperable Global Variables): Likewise.
        (Interoperable Subroutines and Functions): Likewise.
        (Working with C Pointers): Likewise.
        (Further Interoperability of Fortran with C): Likewise.  Rewrite
        to reflect that this is now fully supported by gfortran.

2021-11-04  Sandra Loosemore  <sandra@codesourcery.com>

        * gfortran.texi (About GNU Fortran): Consolidate material
        formerly in other sections.  Copy-editing.
        (Preprocessing and conditional compilation): Delete, moving
        most material to invoke.texi.
        (GNU Fortran and G77): Delete.
        (Project Status): Delete.
        (Standards): Update.
        (Fortran 95 status): Mention conditional compilation here.
        (Fortran 2003 status): Rewrite to mention the 1 missing feature
        instead of all the ones implemented.
        (Fortran 2008 status): Similarly for the 2 missing features.
        (Fortran 2018 status): Rewrite to reflect completion of TS29113
        feature support.
        * invoke.texi (Preprocessing Options): Move material formerly
        in introductory chapter here.

2021-11-04  Sandra Loosemore  <sandra@codesourcery.com>

        * gfortran.texi (Standards): Move discussion of specific
        standard versions here....
        (Fortran standards status): ...from here, and delete this node.

2021-10-31  Bernhard Reutner-Fischer  <aldot@gcc.gnu.org>

        * symbol.c (gfc_get_typebound_proc): Revert memcpy.

2021-10-31  Bernhard Reutner-Fischer  <aldot@gcc.gnu.org>

        * resolve.c (resolve_fl_procedure): Initialize
        allocatable_or_pointer.

2021-10-30  Manfred Schwarb  <manfred99@gmx.ch>

        * intrinsic.texi: Remove entries for SHORT and LONG intrinsics.

2021-10-30  Manfred Schwarb  <manfred99@gmx.ch>

        * check.c (gfc_check_intconv): Change error message.

2021-10-30  Manfred Schwarb  <manfred99@gmx.ch>

        * intrinsic.texi (REAL): Fix entries in Specific names table.

2021-10-30  Manfred Schwarb  <manfred99@gmx.ch>

        * intrinsic.texi: Adjust @columnfractions commands to improve
        appearance for narrow 80 character terminals.

2021-10-30  Bernhard Reutner-Fischer  <aldot@gcc.gnu.org>

        * parse.c (clean_up_modules): Free gsym.

2021-10-30  Harald Anlauf  <anlauf@gmx.de>

        * gfortran.texi (bug reports): credit Gerhard Steinmetz for
          numerous bug reports.

2021-10-30  Steve Kargl  <kargl@gcc.gnu.org>

        PR fortran/99853
        * resolve.c (resolve_select): Generate regular gfc_error on
        invalid conversions instead of an gfc_internal_error.

2021-10-29  Bernhard Reutner-Fischer  <aldot@gcc.gnu.org>

        * symbol.c (free_tb_tree): Free type-bound procedure struct.
        (gfc_get_typebound_proc): Use explicit memcpy for clarity.

2021-10-27  Bernhard Reutner-Fischer  <aldot@gcc.gnu.org>

        * intrinsic.h (gfc_check_sum, gfc_resolve_atan2d, gfc_resolve_kill,
        gfc_resolve_kill_sub): Delete declaration.

2021-10-27  Bernhard Reutner-Fischer  <aldot@gcc.gnu.org>

        * trans-types.h (gfc_convert_function_code): Delete.

2021-10-27  Bernhard Reutner-Fischer  <aldot@gcc.gnu.org>

        * trans-stmt.h (gfc_trans_deallocate_array): Delete.

2021-10-27  Bernhard Reutner-Fischer  <aldot@gcc.gnu.org>

        * trans-array.c (gfc_trans_scalarized_loop_end): Make static.
        * trans-array.h (gfc_trans_scalarized_loop_end,
        gfc_conv_tmp_ref, gfc_conv_array_transpose): Delete declaration.

2021-10-27  Bernhard Reutner-Fischer  <aldot@gcc.gnu.org>

        * constructor.c (gfc_constructor_get_base): Make static.
        (gfc_constructor_expr_foreach, gfc_constructor_swap): Delete.
        * constructor.h (gfc_constructor_get_base): Remove declaration.
        (gfc_constructor_expr_foreach, gfc_constructor_swap): Delete.

2021-10-27  Bernhard Reutner-Fischer  <aldot@gcc.gnu.org>

        * decl.c (gfc_match_old_kind_spec, set_com_block_bind_c,
        set_verify_bind_c_sym, set_verify_bind_c_com_block,
        get_bind_c_idents, gfc_match_suffix, gfc_get_type_attr_spec,
        check_extended_derived_type): Make static.
        (gfc_match_gcc_unroll): Add comment.
        * match.c (gfc_match_small_int_expr): Delete definition.
        * match.h (gfc_match_small_int_expr): Delete declaration.
        (gfc_match_name_C, gfc_match_old_kind_spec, set_com_block_bind_c,
        set_verify_bind_c_sym, set_verify_bind_c_com_block,
        get_bind_c_idents, gfc_match_suffix,
        gfc_get_type_attr_spec): Delete declaration.

2021-10-27  Bernhard Reutner-Fischer  <aldot@gcc.gnu.org>

        * expr.c (is_non_empty_structure_constructor): Make static.
        * gfortran.h (gfc_check_any_c_kind): Delete.
        * match.c (gfc_match_label): Make static.
        * match.h (gfc_match_label): Delete declaration.
        * scanner.c (file_changes_cur, file_changes_count,
        file_changes_allocated): Make static.
        * trans-expr.c (gfc_get_character_len): Make static.
        (gfc_class_len_or_zero_get): Make static.
        (VTAB_GET_FIELD_GEN): Undefine.
        (gfc_get_class_array_ref): Make static.
        (gfc_finish_interface_mapping): Make static.
        * trans-types.c (gfc_check_any_c_kind): Delete.
        (pfunc_type_node, dtype_type_node, gfc_get_ppc_type): Make static.
        * trans-types.h (gfc_get_ppc_type): Delete declaration.
        * trans.c (gfc_msg_wrong_return): Delete.
        * trans.h (gfc_class_len_or_zero_get, gfc_class_vtab_extends_get,
        gfc_vptr_extends_get, gfc_get_class_array_ref, gfc_get_character_len,
        gfc_finish_interface_mapping, gfc_msg_wrong_return,
        gfc_get_function_decl): Delete declaration.

2021-10-27  Tobias Burnus  <tobias@codesourcery.com>

        * trans-stmt.c (gfc_trans_select_rank_cases): Fix condition
        for allocatables/pointers.

2021-10-26  Harald Anlauf  <anlauf@gmx.de>

        PR fortran/102956
        * symbol.c (gfc_check_conflict): Add conflict check for PDT KIND
        and LEN type parameters.

2021-10-26  Harald Anlauf  <anlauf@gmx.de>

        PR fortran/102917
        * decl.c (match_attr_spec): Remove invalid integer kind checks on
        KIND and LEN attributes of PDTs.

2021-10-26  Harald Anlauf  <anlauf@gmx.de>

        PR fortran/102816
        * resolve.c (resolve_structure_cons): Reject invalid array spec of
        a DT component referenced in a structure constructor.

2021-10-26  Tobias Burnus  <tobias@codesourcery.com>

        PR fortran/102885
        * trans-decl.c (gfc_conv_cfi_to_gfc): Properly handle nonconstant
        character lenghts.

2021-10-25  Andrew MacLeod  <amacleod@redhat.com>

        * trans-decl.c (gfc_conv_cfi_to_gfc): Initialize rank to NULL_TREE.

2021-10-22  Eric Gallager  <egallager@gcc.gnu.org>

        PR other/102663
        * Make-lang.in: Allow dvi-formatted documentation
        to be installed.

2021-10-22  Tobias Burnus  <tobias@codesourcery.com>

        PR fortran/92621
        * trans-expr.c (gfc_trans_assignment_1): Add STRIP_NOPS.

2021-10-21  Chung-Lin Tang  <cltang@codesourcery.com>

        * decl.c (gfc_match_end): Add COMP_OMP_STRICTLY_STRUCTURED_BLOCK case
        together with COMP_BLOCK.
        * parse.c (parse_omp_structured_block): Change return type to
        'gfc_statement', add handling for strictly-structured block case, adjust
        recursive calls to parse_omp_structured_block.
        (parse_executable): Adjust calls to parse_omp_structured_block.
        * parse.h (enum gfc_compile_state): Add
        COMP_OMP_STRICTLY_STRUCTURED_BLOCK.
        * trans-openmp.c (gfc_trans_omp_workshare): Add EXEC_BLOCK case
        handling.

2021-10-21  Sandra Loosemore  <sandra@codesourcery.com>

        PR fortran/94070
        * expr.c (gfc_simplify_expr): Handle GFC_ISYM_SHAPE along with
        GFC_ISYM_LBOUND and GFC_ISYM_UBOUND.
        * trans-array.c (gfc_conv_ss_startstride): Likewise.
        (set_loop_bounds): Likewise.
        * trans-intrinsic.c (gfc_trans_intrinsic_bound): Extend to
        handle SHAPE.  Correct logic for zero-size special cases and
        detecting assumed-rank arrays associated with an assumed-size
        argument.
        (gfc_conv_intrinsic_shape): Deleted.
        (gfc_conv_intrinsic_function): Handle GFC_ISYM_SHAPE like
        GFC_ISYM_LBOUND and GFC_ISYM_UBOUND.
        (gfc_add_intrinsic_ss_code): Likewise.
        (gfc_walk_intrinsic_bound): Likewise.

2021-10-20  Chung-Lin Tang  <cltang@codesourcery.com>

        * openmp.c (gfc_match_omp_clause_reduction): Add 'openmp_target' default
        false parameter. Add 'always,tofrom' map for OMP_LIST_IN_REDUCTION case.
        (gfc_match_omp_clauses): Add 'openmp_target' default false parameter,
        adjust call to gfc_match_omp_clause_reduction.
        (match_omp): Adjust call to gfc_match_omp_clauses
        * trans-openmp.c (gfc_trans_omp_taskgroup): Add call to
        gfc_match_omp_clause, create and return block.

2021-10-19  Tobias Burnus  <tobias@codesourcery.com>

        * trans-types.c (create_fn_spec): For allocatable/pointer
        character(len=:), use 'w' not 'R' as fn spec for the length dummy
        argument.

2021-10-19  Tobias Burnus  <tobias@codesourcery.com>

        PR fortran/92482
        * trans-expr.c (gfc_conv_procedure_call): Use TREE_OPERAND not
        build_fold_indirect_ref_loc to undo an ADDR_EXPR.

2021-10-18  Tobias Burnus  <tobias@codesourcery.com>

        PR fortran/102086
        PR fortran/92189
        PR fortran/92621
        PR fortran/101308
        PR fortran/101309
        PR fortran/101635
        PR fortran/92482
        * decl.c (gfc_verify_c_interop_param): Remove 'sorry' for
        scalar allocatable/pointer and len=*.
        * expr.c (is_CFI_desc): Return true for for those.
        * gfortran.h (CFI_type_kind_shift, CFI_type_mask,
        CFI_type_from_type_kind, CFI_VERSION, CFI_MAX_RANK,
        CFI_attribute_pointer, CFI_attribute_allocatable,
        CFI_attribute_other, CFI_type_Integer, CFI_type_Logical,
        CFI_type_Real, CFI_type_Complex, CFI_type_Character,
        CFI_type_ucs4_char, CFI_type_struct, CFI_type_cptr,
        CFI_type_cfunptr, CFI_type_other): New #define.
        * trans-array.c (CFI_FIELD_BASE_ADDR, CFI_FIELD_ELEM_LEN,
        CFI_FIELD_VERSION, CFI_FIELD_RANK, CFI_FIELD_ATTRIBUTE,
        CFI_FIELD_TYPE, CFI_FIELD_DIM, CFI_DIM_FIELD_LOWER_BOUND,
        CFI_DIM_FIELD_EXTENT, CFI_DIM_FIELD_SM,
        gfc_get_cfi_descriptor_field, gfc_get_cfi_desc_base_addr,
        gfc_get_cfi_desc_elem_len, gfc_get_cfi_desc_version,
        gfc_get_cfi_desc_rank, gfc_get_cfi_desc_type,
        gfc_get_cfi_desc_attribute, gfc_get_cfi_dim_item,
        gfc_get_cfi_dim_lbound, gfc_get_cfi_dim_extent, gfc_get_cfi_dim_sm):
        New define/functions to access the CFI array descriptor.
        (gfc_conv_descriptor_type): New function for the GFC descriptor.
        (gfc_get_array_span): Handle expr of CFI descriptors and
        assumed-type descriptors.
        (gfc_trans_array_bounds): Remove 'static'.
        (gfc_conv_expr_descriptor): For assumed type, use the dtype of
        the actual argument.
        (structure_alloc_comps): Remove ' ' inside tabs.
        * trans-array.h (gfc_trans_array_bounds, gfc_conv_descriptor_type,
        gfc_get_cfi_desc_base_addr, gfc_get_cfi_desc_elem_len,
        gfc_get_cfi_desc_version, gfc_get_cfi_desc_rank,
        gfc_get_cfi_desc_type, gfc_get_cfi_desc_attribute,
        gfc_get_cfi_dim_lbound, gfc_get_cfi_dim_extent, gfc_get_cfi_dim_sm):
        New prototypes.
        * trans-decl.c (gfor_fndecl_cfi_to_gfc, gfor_fndecl_gfc_to_cfi):
        Remove global vars.
        (gfc_build_builtin_function_decls): Remove their initialization.
        (gfc_get_symbol_decl, create_function_arglist,
        gfc_trans_deferred_vars): Update for CFI.
        (convert_CFI_desc): Remove and replace by ...
        (gfc_conv_cfi_to_gfc): ... this function
        (gfc_generate_function_code): Call it; create local GFC var for CFI.
        * trans-expr.c (gfc_maybe_dereference_var): Handle CFI.
        (gfc_conv_subref_array_arg): Handle the if-noncontigous-only copy in
        when the result should be a descriptor.
        (gfc_conv_gfc_desc_to_cfi_desc): Completely rewritten.
        (gfc_conv_procedure_call): CFI fixes.
        * trans-openmp.c (gfc_omp_is_optional_argument,
        gfc_omp_check_optional_argument): Handle optional
        CFI.
        * trans-stmt.c (gfc_trans_select_rank_cases): Cleanup, avoid invalid
        code for allocatable/pointer dummies, which cannot be assumed size.
        * trans-types.c (gfc_cfi_descriptor_base): New global var.
        (gfc_get_dtype_rank_type): Skip rank init for rank < 0.
        (gfc_sym_type): Handle CFI dummies.
        (gfc_get_function_type): Update call.
        (gfc_get_cfi_dim_type, gfc_get_cfi_type): New.
        * trans-types.h (gfc_sym_type): Update prototype.
        (gfc_get_cfi_type): New prototype.
        * trans.c (gfc_trans_runtime_check): Make conditions more consistent
        to avoid '<logical> AND_THEN <long int>' in conditions.
        * trans.h (gfor_fndecl_cfi_to_gfc, gfor_fndecl_gfc_to_cfi): Remove
        global-var declaration.

2021-10-18  Tobias Burnus  <tobias@codesourcery.com>

        PR fortran/102745
        * intrinsic.c (gfc_convert_type_warn): Fix checks by checking CLASS
        and do typcheck in correct order for type extension.
        * misc.c (gfc_typename): Print proper not internal CLASS type name.

2021-10-15  Harald Anlauf  <anlauf@gmx.de>
            Tobias Burnus  <tobias@codesourcery.com>

        PR fortran/102685
        * decl.c (match_clist_expr): Set rank/shape of clist initializer
        to match LHS.
        * resolve.c (resolve_structure_cons): In a structure constructor,
        compare shapes of array components against declared shape.

2021-10-14  Harald Anlauf  <anlauf@gmx.de>

        PR fortran/102717
        * simplify.c (gfc_simplify_reshape): Replace assert by error
        message for negative elements in SHAPE array.

2021-10-14  Harald Anlauf  <anlauf@gmx.de>

        PR fortran/102716
        * check.c (gfc_check_shape): Reorder checks so that invalid KIND
        arguments can be detected.

2021-10-14  Kwok Cheung Yeung  <kcy@codesourcery.com>

        * gfortran.h (enum gfc_statement): Add ST_OMP_DECLARE_VARIANT.
        (enum gfc_omp_trait_property_kind): New.
        (struct gfc_omp_trait_property): New.
        (gfc_get_omp_trait_property): New macro.
        (struct gfc_omp_selector): New.
        (gfc_get_omp_selector): New macro.
        (struct gfc_omp_set_selector): New.
        (gfc_get_omp_set_selector): New macro.
        (struct gfc_omp_declare_variant): New.
        (gfc_get_omp_declare_variant): New macro.
        (struct gfc_namespace): Add omp_declare_variant field.
        (gfc_free_omp_declare_variant_list): New prototype.
        * match.h (gfc_match_omp_declare_variant): New prototype.
        * openmp.c (gfc_free_omp_trait_property_list): New.
        (gfc_free_omp_selector_list): New.
        (gfc_free_omp_set_selector_list): New.
        (gfc_free_omp_declare_variant_list): New.
        (gfc_match_omp_clauses): Add extra optional argument.  Handle end of
        clauses for context selectors.
        (omp_construct_selectors, omp_device_selectors,
        omp_implementation_selectors, omp_user_selectors): New.
        (gfc_match_omp_context_selector): New.
        (gfc_match_omp_context_selector_specification): New.
        (gfc_match_omp_declare_variant): New.
        * parse.c: Include tree-core.h and omp-general.h.
        (decode_omp_directive): Handle 'declare variant'.
        (case_omp_decl): Include ST_OMP_DECLARE_VARIANT.
        (gfc_ascii_statement): Handle ST_OMP_DECLARE_VARIANT.
        (gfc_parse_file): Initialize omp_requires_mask.
        * symbol.c (gfc_free_namespace): Call
        gfc_free_omp_declare_variant_list.
        * trans-decl.c (gfc_get_extern_function_decl): Call
        gfc_trans_omp_declare_variant.
        (gfc_create_function_decl): Call gfc_trans_omp_declare_variant.
        * trans-openmp.c (gfc_trans_omp_declare_variant): New.
        * trans-stmt.h (gfc_trans_omp_declare_variant): New prototype.

2021-10-13  Tobias Burnus  <tobias@codesourcery.com>

        * dump-parse-tree.c (show_omp_clauses): Handle ancestor modifier,
        avoid ICE for GFC_OMP_ATOMIC_SWAP.
        * gfortran.h (gfc_omp_clauses): Change 'anecestor' into a bitfield.

2021-10-12  Tobias Burnus  <tobias@codesourcery.com>

        PR fortran/102541
        * check.c (gfc_check_present): Handle optional CLASS.
        * interface.c (gfc_compare_actual_formal): Likewise.
        * trans-array.c (gfc_trans_g77_array): Likewise.
        * trans-decl.c (gfc_build_dummy_array_decl): Likewise.
        * trans-types.c (gfc_sym_type): Likewise.
        * primary.c (gfc_variable_attr): Fixes for dummy and
        pointer when 'class%_data' is passed.
        * trans-expr.c (set_dtype_for_unallocated, gfc_conv_procedure_call):
        For assumed-rank dummy, fix setting rank for dealloc/notassoc actual
        and setting ubound to -1 for assumed-size actuals.

2021-10-10  Harald Anlauf  <anlauf@gmx.de>

        PR fortran/99348
        PR fortran/102521
        * decl.c (add_init_expr_to_sym): Extend initialization of
        parameter arrays from scalars to handle derived types.

2021-10-09  Harald Anlauf  <anlauf@gmx.de>

        PR fortran/65454
        * module.c (read_module): Handle old and new-style relational
        operators when used in USE module, ONLY: OPERATOR(op).

2021-10-08  Sandra Loosemore  <sandra@codesourcery.com>

        PR fortran/54753
        * interface.c (gfc_compare_actual_formal): Add diagnostic
        for F2018:C839.  Refactor shared code and fix bugs with class
        array info lookup, and extend similar diagnostic from PR94110
        to also cover class types.

2021-10-08  Martin Liska  <mliska@suse.cz>

        * options.c (gfc_post_options): Use new macro
        OPTION_SET_P.

2021-10-06  Tobias Burnus  <tobias@codesourcery.com>

        * resolve.c (resolve_values): Only show
        deprecated warning if attr.referenced.

2021-10-04  Tobias Burnus  <tobias@codesourcery.com>

        PR fortran/54753
        * resolve.c (can_generate_init, resolve_fl_variable_derived,
        resolve_symbol): Only do initialization with intent(out) if not
        inside of an interface block.

2021-10-01  Martin Sebor  <msebor@redhat.com>

        PR c/102103
        * array.c: Remove an unnecessary test.
        * trans-array.c: Same.

2021-10-01  Jakub Jelinek  <jakub@redhat.com>

        * gfortran.h (gfc_omp_clauses): Add order_reproducible bitfield.
        * dump-parse-tree.c (show_omp_clauses): Print REPRODUCIBLE: for it.
        * openmp.c (gfc_match_omp_clauses): Set order_reproducible for
        explicit reproducible: modifier.
        * trans-openmp.c (gfc_trans_omp_clauses): Set
        OMP_CLAUSE_ORDER_REPRODUCIBLE for order_reproducible.
        (gfc_split_omp_clauses): Also copy order_reproducible.

2021-09-30  Harald Anlauf  <anlauf@gmx.de>

        PR fortran/102458
        * simplify.c (simplify_size): Resolve expressions used in array
        specifications so that SIZE can be simplified.

2021-09-30  Harald Anlauf  <anlauf@gmx.de>

        * expr.c: The correct reference to Fortran standard is: F2018:10.1.12.

2021-09-30  Tobias Burnus  <tobias@codesourcery.com>

        PR fortran/71703
        PR fortran/84007
        * trans-intrinsic.c (gfc_conv_same_type_as): Fix handling
        of UNLIMITED_POLY.
        * trans.h (gfc_vtpr_hash_get): Renamed prototype to ...
        (gfc_vptr_hash_get): ... this to match function name.

2021-09-29  Harald Anlauf  <anlauf@gmx.de>

        PR fortran/102520
        * array.c (expand_constructor): Do not dereference NULL pointer.

2021-09-27  Tobias Burnus  <tobias@codesourcery.com>

        PR fortran/94070
        * trans-array.c (gfc_tree_array_size): New function to
        find size inline (whole array or one dimension).
        (array_parameter_size): Use it, take stmt_block as arg.
        (gfc_conv_array_parameter): Update call.
        * trans-array.h (gfc_tree_array_size): Add prototype.
        * trans-decl.c (gfor_fndecl_size0, gfor_fndecl_size1): Remove
        these global vars.
        (gfc_build_intrinsic_function_decls): Remove their initialization.
        * trans-expr.c (gfc_conv_procedure_call): Update
        bounds of pointer/allocatable actual args to nonallocatable/nonpointer
        dummies to be one based.
        * trans-intrinsic.c (gfc_conv_intrinsic_shape): Fix case for
        assumed rank with allocatable/pointer dummy.
        (gfc_conv_intrinsic_size): Update to use inline function.
        * trans.h (gfor_fndecl_size0, gfor_fndecl_size1): Remove var decl.

2021-09-26  Tobias Burnus  <tobias@codesourcery.com>

        PR fortran/101334
        * trans-intrinsic.c (gfc_conv_associated): Support assumed-rank
        'pointer' with scalar/array 'target' argument.

2021-09-24  Harald Anlauf  <anlauf@gmx.de>

        PR fortran/102458
        * expr.c (is_non_constant_intrinsic): Check for intrinsics
        excluded in constant expressions (F2018:10.1.2).
        (gfc_is_constant_expr): Use that check.

2021-09-24  Sandra Loosemore  <sandra@codesourcery.com>

        PR fortran/101333
        * interface.c (compare_parameter): Enforce F2018 C711.

2021-09-24  Tobias Burnus  <tobias@codesourcery.com>

        PR fortran/55534
        * scanner.c (load_file): Return void, call (gfc_)fatal_error for
        all errors.
        (include_line, include_stmt, gfc_new_file): Remove exit call
        for failed load_file run.

2021-09-23  Sandra Loosemore  <sandra@codesourcery.com>

        PR fortran/101320
        * decl.c (gfc_verify_c_interop_param): Handle F2018 C1557,
        aka TS29113 C516.

2021-09-23  Harald Anlauf  <anlauf@gmx.de>
            Tobias Burnus  <tobias@codesourcery.com>

        PR fortran/93834
        * trans-intrinsic.c (gfc_conv_allocated): Cleanup. Handle
        coindexed scalar coarrays.

2021-09-23  Sandra Loosemore  <sandra@codesourcery.com>

        PR fortran/101319
        * interface.c (gfc_compare_actual_formal): Extend existing
        assumed-type diagnostic to also check for argument with type
        parameters.

2021-09-23  Sandra Loosemore  <sandra@codesourcery.com>

        PR fortran/101334
        * check.c (gfc_check_associated): Allow an assumed-rank
        array for the pointer argument.
        * interface.c (compare_parameter): Also give rank mismatch
        error on assumed-rank array.

2021-09-23  Sandra Loosemore  <sandra@codesourcery.com>

        * trans-stmt.c (trans_associate_var): Check that result of
        GFC_DECL_SAVED_DESCRIPTOR is not null before using it.

2021-09-22  Tobias Burnus  <tobias@codesourcery.com>

        PR fortran/55534
        * cpp.c (gfc_cpp_register_include_paths, gfc_cpp_post_options):
        Add new bool verbose_missing_dir_warn argument.
        * cpp.h (gfc_cpp_post_options): Update prototype.
        * f95-lang.c (gfc_init): Remove duplicated file-not found diag.
        * gfortran.h (gfc_check_include_dirs): Takes bool
        verbose_missing_dir_warn arg.
        (gfc_new_file): Returns now void.
        * options.c (gfc_post_options): Update to warn for -I and -J,
        only, by default but for all when user requested.
        * scanner.c (gfc_do_check_include_dir):
        (gfc_do_check_include_dirs, gfc_check_include_dirs): Take bool
        verbose warn arg and update to avoid printing the same message
        twice or never.
        (load_file): Fix indent.
        (gfc_new_file): Return void and exit when load_file failed
        as all other load_file users do.

2021-09-22  Tobias Burnus  <tobias@codesourcery.com>

        * trans-expr.c (gfc_simple_for_loop): New.
        * trans.h (gfc_simple_for_loop): New prototype.

2021-09-21  Tobias Burnus  <tobias@codesourcery.com>

        PR fortran/55534
        * cpp.c: Define GCC_C_COMMON_C for #include "options.h" to make
        cpp_reason_option_codes available.
        (gfc_cpp_register_include_paths): Make static, set pfile's
        warn_missing_include_dirs and move before caller.
        (gfc_cpp_init_cb): New, cb code moved from ...
        (gfc_cpp_init_0): ... here.
        (gfc_cpp_post_options): Call gfc_cpp_init_cb.
        (cb_cpp_diagnostic_cpp_option): New. As implemented in c-family
        to match CppReason flags to -W... names.
        (cb_cpp_diagnostic): Use it to replace single special case.
        * cpp.h (gfc_cpp_register_include_paths): Remove as now static.
        * gfortran.h (gfc_check_include_dirs): New prototype.
        (gfc_add_include_path): Add new bool arg.
        * options.c (gfc_init_options): Don't set -Wmissing-include-dirs.
        (gfc_post_options): Set it here after commandline processing. Call
        gfc_add_include_path with defer_warn=false.
        (gfc_handle_option): Call it with defer_warn=true.
        * scanner.c (gfc_do_check_include_dir, gfc_do_check_include_dirs,
        gfc_check_include_dirs): New. Diagnostic moved from ...
        (add_path_to_list): ... here, which came before cmdline processing.
        Take additional bool defer_warn argument.
        (gfc_add_include_path): Take additional defer_warn arg.
        * scanner.h (struct gfc_directorylist): Reorder for alignment issues,
        add new 'bool warn'.

2021-09-20  Tobias Burnus  <tobias@codesourcery.com>

        * gfortran.h (gfc_omp_clauses): Add order_unconstrained.
        * dump-parse-tree.c (show_omp_clauses): Dump it.
        * openmp.c (gfc_match_omp_clauses): Match unconstrained/reproducible
        modifiers to ordered(concurrent).
        (OMP_DISTRIBUTE_CLAUSES): Accept ordered clause.
        (resolve_omp_clauses): Reject ordered + order on same directive.
        * trans-openmp.c (gfc_trans_omp_clauses, gfc_split_omp_clauses): Pass
        on unconstrained modifier of ordered(concurrent).

2021-09-17  Harald Anlauf  <anlauf@gmx.de>

        PR fortran/102366
        * trans-decl.c (gfc_finish_var_decl): Disable the warning message
        for variables moved from stack to static storange if they are
        declared in the main, but allow the move to happen.

2021-09-17  Sandra Loosemore  <sandra@codesourcery.com>

        * intrinsic.texi (ISO_C_BINDING): Change C_FLOAT128 to correspond
        to _Float128 rather than __float128.
        * iso-c-binding.def (c_float128): Update comments.
        * trans-intrinsic.c (gfc_builtin_decl_for_float_kind): Likewise.
        (build_round_expr): Likewise.
        (gfc_build_intrinsic_lib_fndcecls): Likewise.
        * trans-types.h (gfc_real16_is_float128): Likewise.

2021-09-16  Harald Anlauf  <anlauf@gmx.de>

        PR fortran/102287
        * trans-expr.c (gfc_conv_procedure_call): Wrap deallocation of
        allocatable components of optional allocatable derived type
        procedure arguments with INTENT(OUT) into a presence check.

2021-09-14  Harald Anlauf  <anlauf@gmx.de>

        PR fortran/102311
        * resolve.c (resolve_entries): Attempt to recover cleanly after
        rejecting mismatched function entries.

2021-09-14  Tobias Burnus  <tobias@codesourcery.com>

        PR fortran/102313
        * parse.c (gfc_ascii_statement): Add missing ST_OMP_END_SCOPE.

2021-09-13  Harald Anlauf  <anlauf@gmx.de>

        PR fortran/82314
        * decl.c (add_init_expr_to_sym): For proper initialization of
        array-valued named constants the array bounds need to be
        simplified before adding the initializer.

2021-09-13  Harald Anlauf  <anlauf@gmx.de>

        PR fortran/85130
        * expr.c (find_substring_ref): Handle given substring start and
        end indices as signed integers, not unsigned.

2021-09-09  Harald Anlauf  <anlauf@gmx.de>

        PR fortran/98490
        * trans-expr.c (gfc_conv_substring): Do not generate substring
        bounds check for implied do loop index variable before it actually
        becomes defined.

2021-09-08  liuhongt  <hongtao.liu@intel.com>

        * options.c (gfc_post_options): Issue an error for
        -fexcess-precision=16.

2021-09-07  Harald Anlauf  <anlauf@gmx.de>

        PR fortran/101327
        * expr.c (find_array_element): When bounds cannot be determined as
        constant, return error instead of aborting.

2021-09-07  Marcel Vollweiler  <marcel@codesourcery.com>

        * openmp.c (gfc_match_omp_flush): Parse 'seq_cst' clause on 'flush'
        directive.
        * trans-openmp.c (gfc_trans_omp_flush): Handle OMP_MEMORDER_SEQ_CST.

2021-09-03  Tobias Burnus  <tobias@codesourcery.com>

        * decl.c (gfc_verify_c_interop_param): Reject pointer with
        CONTIGUOUS attributes as dummy arg. Reject character len > 1
        when passed as byte stream.

2021-09-01  Harald Anlauf  <anlauf@gmx.de>

        PR fortran/56985
        * resolve.c (resolve_common_vars): Fix grammar and improve wording
        of error message rejecting an unlimited polymorphic in COMMON.

2021-08-31  Harald Anlauf  <anlauf@gmx.de>

        PR fortran/100950
        * simplify.c (substring_has_constant_len): Minimize checks for
        substring expressions being allowed.

2021-08-31  Marcel Vollweiler  <marcel@codesourcery.com>

        * gfortran.h: Add variable for 'ancestor' in struct gfc_omp_clauses.
        * openmp.c (gfc_match_omp_clauses): Parse device-modifiers 'device_num'
        and 'ancestor' in 'target device' clauses.
        * trans-openmp.c (gfc_trans_omp_clauses): Set OMP_CLAUSE_DEVICE_ANCESTOR.

2021-08-30  Harald Anlauf  <anlauf@gmx.de>

        PR fortran/102113
        * match.c (gfc_match_goto): Allow for whitespace in parsing list
        of labels.

2021-08-30  Harald Anlauf  <anlauf@gmx.de>

        PR fortran/101349
        * resolve.c (resolve_allocate_expr): An unlimited polymorphic
        argument to ALLOCATE must be ALLOCATABLE or a POINTER.  Fix the
        corresponding check.

2021-08-28  Harald Anlauf  <anlauf@gmx.de>

        PR fortran/87737
        * resolve.c (resolve_entries): For functions of type CHARACTER
        tighten the checks for matching characteristics.

2021-08-25  Lewis Hyatt  <lhyatt@gmail.com>

        PR other/93067
        * cpp.c (gfc_cpp_post_options): Call new function
        diagnostic_initialize_input_context().

2021-08-24  Harald Anlauf  <anlauf@gmx.de>

        PR fortran/98411
        * trans-decl.c (gfc_finish_var_decl): Adjust check to handle
        implicit SAVE as well as variables in the main program.  Improve
        warning message text.

2021-08-23  Tobias Burnus  <tobias@codesourcery.com>

        * openmp.c (gfc_match_dupl_check, gfc_match_dupl_memorder,
        gfc_match_dupl_atomic): New.
        (gfc_match_omp_clauses): Use them; remove duplicate
        'release'/'relaxed' clause matching; improve error dignostic
        for 'default'.

2021-08-23  Tobias Burnus  <tobias@codesourcery.com>

        * dump-parse-tree.c (show_omp_clauses): Handle 'strict' modifier
        on grainsize/num_tasks
        * gfortran.h (gfc_omp_clauses): Add grainsize_strict
        and num_tasks_strict.
        * trans-openmp.c (gfc_trans_omp_clauses, gfc_split_omp_clauses):
        Handle 'strict' modifier on grainsize/num_tasks.
        * openmp.c (gfc_match_omp_clauses): Likewise.

2021-08-20  Tobias Burnus  <tobias@codesourcery.com>

        * error.c
        (error_uinteger): Take 'long long unsigned' instead
        of 'long unsigned' as argumpent.
        (error_integer): Take 'long long' instead of 'long'.
        (error_hwuint, error_hwint): New.
        (error_print): Update to handle 'll' and 'w'
        length modifiers.
        * simplify.c (substring_has_constant_len): Use '%wd'
        in gfc_error.

2021-08-20  Harald Anlauf  <anlauf@gmx.de>

        PR fortran/100950
        * simplify.c (substring_has_constant_len): Fix format string of
        gfc_error, pass HOST_WIDE_INT bounds values via char buffer.

2021-08-20  Tobias Burnus  <tobias@codesourcery.com>

        * dump-parse-tree.c (show_omp_clauses): Handle 'at', 'severity'
        and 'message' clauses.
        (show_omp_node, show_code_node): Handle EXEC_OMP_ERROR.
        * gfortran.h (gfc_statement): Add ST_OMP_ERROR.
        (gfc_omp_severity_type, gfc_omp_at_type): New.
        (gfc_omp_clauses): Add 'at', 'severity' and 'message' clause;
        use more bitfields + ENUM_BITFIELD.
        (gfc_exec_op): Add EXEC_OMP_ERROR.
        * match.h (gfc_match_omp_error): New.
        * openmp.c (enum omp_mask1): Add OMP_CLAUSE_(AT,SEVERITY,MESSAGE).
        (gfc_match_omp_clauses): Handle new clauses.
        (OMP_ERROR_CLAUSES, gfc_match_omp_error): New.
        (resolve_omp_clauses): Resolve new clauses.
        (omp_code_to_statement, gfc_resolve_omp_directive): Handle
        EXEC_OMP_ERROR.
        * parse.c (decode_omp_directive, next_statement,
        gfc_ascii_statement): Handle 'omp error'.
        * resolve.c (gfc_resolve_blocks): Likewise.
        * st.c (gfc_free_statement): Likewise.
        * trans-openmp.c (gfc_trans_omp_error): Likewise.
        (gfc_trans_omp_directive): Likewise.
        * trans.c (trans_code): Likewise.

2021-08-20  Jakub Jelinek  <jakub@redhat.com>

        * types.def (BT_FN_VOID_CONST_PTR_SIZE): New DEF_FUNCTION_TYPE_2.
        * f95-lang.c (ATTR_COLD_NORETURN_NOTHROW_LEAF_LIST): Define.

2021-08-19  Harald Anlauf  <anlauf@gmx.de>

        PR fortran/100950
        * simplify.c (substring_has_constant_len): New.
        (gfc_simplify_len): Handle case of substrings with constant
        bounds.

2021-08-18  Tobias Burnus  <tobias@codesourcery.com>

        * match.h (gfc_match_omp_nothing): New.
        * openmp.c (gfc_match_omp_nothing): New.
        * parse.c (decode_omp_directive): Match 'nothing' directive.

2021-08-17  Tobias Burnus  <tobias@codesourcery.com>

        * dump-parse-tree.c (show_omp_node, show_code_node): Handle
        EXEC_OMP_SCOPE.
        * gfortran.h (enum gfc_statement): Add ST_OMP_(END_)SCOPE.
        (enum gfc_exec_op): Add EXEC_OMP_SCOPE.
        * match.h (gfc_match_omp_scope): New.
        * openmp.c (OMP_SCOPE_CLAUSES): Define
        (gfc_match_omp_scope): New.
        (gfc_match_omp_cancellation_point, gfc_match_omp_end_nowait):
        Improve error diagnostic.
        (omp_code_to_statement): Handle ST_OMP_SCOPE.
        (gfc_resolve_omp_directive): Handle EXEC_OMP_SCOPE.
        * parse.c (decode_omp_directive, next_statement,
        gfc_ascii_statement, parse_omp_structured_block,
        parse_executable): Handle OpenMP's scope construct.
        * resolve.c (gfc_resolve_blocks): Likewise
        * st.c (gfc_free_statement): Likewise
        * trans-openmp.c (gfc_trans_omp_scope): New.
        (gfc_trans_omp_directive): Call it.
        * trans.c (trans_code): handle EXEC_OMP_SCOPE.

2021-08-16  Tobias Burnus  <tobias@codesourcery.com>

        * dump-parse-tree.c (show_omp_clauses): Handle 'filter' clause.
        (show_omp_node, show_code_node): Handle (combined) omp masked construct.
        * frontend-passes.c (gfc_code_walker): Likewise.
        * gfortran.h (enum gfc_statement): Add ST_OMP_*_MASKED*.
        (enum gfc_exec_op): Add EXEC_OMP_*_MASKED*.
        * match.h (gfc_match_omp_masked, gfc_match_omp_masked_taskloop,
        gfc_match_omp_masked_taskloop_simd, gfc_match_omp_parallel_masked,
        gfc_match_omp_parallel_masked_taskloop,
        gfc_match_omp_parallel_masked_taskloop_simd): New prototypes.
        * openmp.c (enum omp_mask1): Add OMP_CLAUSE_FILTER.
        (gfc_match_omp_clauses): Match it.
        (OMP_MASKED_CLAUSES, gfc_match_omp_parallel_masked,
        gfc_match_omp_parallel_masked_taskloop,
        gfc_match_omp_parallel_masked_taskloop_simd,
        gfc_match_omp_masked, gfc_match_omp_masked_taskloop,
        gfc_match_omp_masked_taskloop_simd): New.
        (resolve_omp_clauses): Resolve filter clause.
        (gfc_resolve_omp_parallel_blocks, resolve_omp_do,
        omp_code_to_statement, gfc_resolve_omp_directive): Handle
        omp masked constructs.
        * parse.c (decode_omp_directive, case_exec_markers,
        gfc_ascii_statement, parse_omp_do, parse_omp_structured_block,
        parse_executable): Likewise.
        * resolve.c (gfc_resolve_blocks, gfc_resolve_code): Likewise.
        * st.c (gfc_free_statement): Likewise.
        * trans-openmp.c (gfc_trans_omp_clauses): Handle filter clause.
        (GFC_OMP_SPLIT_MASKED, GFC_OMP_MASK_MASKED): New enum values.
        (gfc_trans_omp_masked): New.
        (gfc_split_omp_clauses): Handle combined masked directives.
        (gfc_trans_omp_master_taskloop): Rename to ...
        (gfc_trans_omp_master_masked_taskloop): ... this; handle also
        combined masked directives.
        (gfc_trans_omp_parallel_master): Rename to ...
        (gfc_trans_omp_parallel_master_masked): ... this; handle
        combined masked directives.
        (gfc_trans_omp_directive): Handle EXEC_OMP_*_MASKED*.
        * trans.c (trans_code): Likewise.

2021-08-15  Harald Anlauf  <anlauf@gmx.de>

        PR fortran/99351
        * match.c (sync_statement): Replace %v code by %e in gfc_match to
        allow for function references as STAT and ERRMSG arguments.
        * resolve.c (resolve_sync): Adjust checks of STAT= and ERRMSG= to
        being definable arguments.  Function references with a data
        pointer result are accepted.
        * trans-stmt.c (gfc_trans_sync): Adjust assertion.

2021-08-12  Tobias Burnus  <tobias@codesourcery.com>

        * gfortran.h (gfc_omp_proc_bind_kind): Add OMP_PROC_BIND_PRIMARY.
        * dump-parse-tree.c (show_omp_clauses): Add TODO comment to
        change 'master' to 'primary' in proc_bind for OpenMP 5.1.
        * intrinsic.texi (OMP_LIB): Mention OpenMP 5.1; add
        omp_proc_bind_primary.
        * openmp.c (gfc_match_omp_clauses): Accept
        'primary' as alias for 'master'.
        * trans-openmp.c (gfc_trans_omp_clauses): Handle
        OMP_PROC_BIND_PRIMARY.

2021-08-11  Sandra Loosemore  <sandra@codesourcery.com>

        * iso-c-binding.def (c_float128, c_float128_complex): Check
        float128_type_node instead of gfc_float128_type_node.
        * trans-types.c (gfc_init_kinds, gfc_build_real_type):
        Update comments re supported 128-bit floating-point types.

2021-08-11  Richard Biener  <rguenther@suse.de>

        * trans-common.c (create_common): Set TREE_THIS_VOLATILE on the
        COMPONENT_REF if the field is volatile.

2021-08-07  Harald Anlauf  <anlauf@gmx.de>

        PR fortran/68568
        * primary.c (gfc_expr_attr): Variable attribute can only be
        inquired when symtree is non-NULL.

2021-07-28  Harald Anlauf  <anlauf@gmx.de>

        PR fortran/101564
        * expr.c (gfc_check_vardef_context): Add check for KIND and LEN
        parameter inquiries.
        * match.c (gfc_match): Fix comment for %v code.
        (gfc_match_allocate, gfc_match_deallocate): Replace use of %v code
        by %e in gfc_match to allow for function references as STAT and
        ERRMSG arguments.
        * resolve.c (resolve_allocate_deallocate): Avoid NULL pointer
        dereferences and shortcut for bad STAT and ERRMSG argument to
        (DE)ALLOCATE.  Remove bogus parts of checks for STAT and ERRMSG.

2021-07-26  José Rui Faustino de Sousa  <jrfsousa@gmail.com>
            Tobias Burnus  <tobias@codesourcery.com>

        PR fortran/93308
        PR fortran/93963
        PR fortran/94327
        PR fortran/94331
        PR fortran/97046
        * trans-decl.c (convert_CFI_desc): Only copy out the descriptor
        if necessary.
        * trans-expr.c (gfc_conv_gfc_desc_to_cfi_desc): Updated attribute
        handling which reflect a previous intermediate version of the
        standard. Only copy out the descriptor if necessary.

2021-07-23  Harald Anlauf  <anlauf@gmx.de>

        PR fortran/101536
        * check.c (array_check): Adjust check for the case of CLASS
        arrays.

2021-07-21  Thomas Schwinge  <thomas@codesourcery.com>
            Joseph Myers  <joseph@codesourcery.com>
            Cesar Philippidis  <cesar@codesourcery.com>

        * dump-parse-tree.c (show_attr): Update.
        * gfortran.h (symbol_attribute): Add 'oacc_routine_nohost' member.
        (gfc_omp_clauses): Add 'nohost' member.
        * module.c (ab_attribute): Add 'AB_OACC_ROUTINE_NOHOST'.
        (attr_bits, mio_symbol_attribute): Update.
        * openmp.c (omp_mask2): Add 'OMP_CLAUSE_NOHOST'.
        (gfc_match_omp_clauses): Handle 'OMP_CLAUSE_NOHOST'.
        (OACC_ROUTINE_CLAUSES): Add 'OMP_CLAUSE_NOHOST'.
        (gfc_match_oacc_routine): Update.
        * trans-decl.c (add_attributes_to_decl): Update.
        * trans-openmp.c (gfc_trans_omp_clauses): Likewise.

2021-07-21  Harald Anlauf  <anlauf@gmx.de>

        PR fortran/101514
        * target-memory.c (gfc_interpret_derived): Size of array component
        of derived type can only be computed here for explicit shape.
        * trans-types.c (gfc_get_nodesc_array_type): Do not dereference
        NULL pointers.

2021-07-21  Tobias Burnus  <tobias@codesourcery.com>

        * decl.c (gfc_verify_c_interop_param): Update for F2008 + F2018
        changes; reject unsupported bits with 'Error: Sorry,'.
        * trans-expr.c (gfc_conv_procedure_call): Fix condition to
        For using CFI descriptor with characters.

2021-07-18  Harald Anlauf  <anlauf@gmx.de>

        PR fortran/101084
        * io.c (resolve_tag_format): Extend FORMAT check to unknown type.

2021-07-14  Harald Anlauf  <anlauf@gmx.de>

        PR fortran/100949
        * trans-expr.c (gfc_trans_class_init_assign): Call
        gfc_conv_expr_present only for dummy variables.

2021-07-06  Thomas Koenig  <tkoenig@gcc.gnu.org>

        PR fortran/100227
        * frontend-passes.c (traverse_io_block): Adjust test for
        when a variable is eligible for the transformation to
        array slice.

2021-06-28  Martin Sebor  <msebor@redhat.com>

        * trans-array.c (trans_array_constructor): Replace direct uses
        of TREE_NO_WARNING with warning_suppressed_p, and suppress_warning.
        * trans-decl.c (gfc_build_qualified_array): Same.
        (gfc_build_dummy_array_decl): Same.
        (generate_local_decl): Same.
        (gfc_generate_function_code): Same.
        * trans-openmp.c (gfc_omp_clause_default_ctor): Same.
        (gfc_omp_clause_copy_ctor): Same.
        * trans-types.c (get_dtype_type_node): Same.
        (gfc_get_desc_dim_type): Same.
        (gfc_get_array_descriptor_base): Same.
        (gfc_get_caf_vector_type): Same.
        (gfc_get_caf_reference_type): Same.
        * trans.c (gfc_create_var_np): Same.

2021-06-23  Tobias Burnus  <tobias@codesourcery.com>

        * dump-parse-tree.c (show_omp_clauses): Fix enum type used
        for dumping gfc_omp_defaultmap_category.

2021-06-23  Andre Vehreschild  <vehre@gcc.gnu.org>

        PR fortran/100337
        * trans-intrinsic.c (conv_co_collective): Check stat for null ptr
        before dereferrencing.

2021-06-18  Harald Anlauf  <anlauf@gmx.de>

        PR fortran/100283
        PR fortran/101123
        * trans-intrinsic.c (gfc_conv_intrinsic_minmax): Unconditionally
        convert result of min/max to result type.

2021-06-16  Harald Anlauf  <anlauf@gmx.de>

        PR fortran/95501
        PR fortran/95502
        * expr.c (gfc_check_pointer_assign): Avoid NULL pointer
        dereference.
        * match.c (gfc_match_pointer_assignment): Likewise.
        * parse.c (gfc_check_do_variable): Avoid comparison with NULL
        symtree.

2021-06-16  Harald Anlauf  <anlauf@gmx.de>

        Revert:
        2021-06-16  Harald Anlauf  <anlauf@gmx.de>

        PR fortran/95501
        PR fortran/95502
        * expr.c (gfc_check_pointer_assign): Avoid NULL pointer
        dereference.
        * match.c (gfc_match_pointer_assignment): Likewise.
        * parse.c (gfc_check_do_variable): Avoid comparison with NULL
        symtree.

2021-06-16  Harald Anlauf  <anlauf@gmx.de>

        PR fortran/95501
        PR fortran/95502
        * expr.c (gfc_check_pointer_assign): Avoid NULL pointer
        dereference.
        * match.c (gfc_match_pointer_assignment): Likewise.
        * parse.c (gfc_check_do_variable): Avoid comparison with NULL
        symtree.

2021-06-15  Tobias Burnus  <tobias@codesourcery.com>

        PR fortran/92568
        * dump-parse-tree.c (show_omp_clauses): Update for defaultmap.
        * f95-lang.c (LANG_HOOKS_OMP_ALLOCATABLE_P,
        LANG_HOOKS_OMP_SCALAR_TARGET_P): New.
        * gfortran.h (enum gfc_omp_defaultmap,
        enum gfc_omp_defaultmap_category): New.
        * openmp.c (gfc_match_omp_clauses): Update defaultmap matching.
        * trans-decl.c (gfc_finish_decl_attrs): Set GFC_DECL_SCALAR_TARGET.
        * trans-openmp.c (gfc_omp_allocatable_p, gfc_omp_scalar_target_p): New.
        (gfc_omp_scalar_p): Take 'ptr_alloc_ok' argument.
        (gfc_trans_omp_clauses, gfc_split_omp_clauses): Update for
        defaultmap changes.
        * trans.h (gfc_omp_scalar_p): Update prototype.
        (gfc_omp_allocatable_p, gfc_omp_scalar_target_p): New.
        (struct lang_decl): Add scalar_target.
        (GFC_DECL_SCALAR_TARGET, GFC_DECL_GET_SCALAR_TARGET): New.

2021-06-14  Tobias Burnus  <tobias@codesourcery.com>

        * resolve.c (resolve_variable): Remove *XCNEW used to
        nullify nullified memory.

2021-06-09  Martin Liska  <mliska@suse.cz>

        * intrinsic.texi: Add missing @headitem to tables with a header.

2021-06-09  Jakub Jelinek  <jakub@redhat.com>

        PR fortran/100965
        * trans-openmp.c (gfc_omp_finish_clause): Gimplify OMP_CLAUSE_SIZE.

2021-06-08  Tobias Burnus  <tobias@codesourcery.com>

        PR middle-end/99928
        * trans-openmp.c (gfc_add_clause_implicitly): New.
        (gfc_split_omp_clauses): Use it.
        (gfc_free_split_omp_clauses): New.
        (gfc_trans_omp_do_simd, gfc_trans_omp_parallel_do,
        gfc_trans_omp_parallel_do_simd, gfc_trans_omp_distribute,
        gfc_trans_omp_teams, gfc_trans_omp_target, gfc_trans_omp_taskloop,
        gfc_trans_omp_master_taskloop, gfc_trans_omp_parallel_master): Use it.

2021-06-08  Martin Liska  <mliska@suse.cz>

        * intrinsic.texi: Fix typo.
        * trans-expr.c (gfc_trans_pointer_assignment): Likewise.

2021-06-05  José Rui Faustino de Sousa  <jrfsousa@gmail.com>

        PR fortran/100120
        PR fortran/100816
        PR fortran/100818
        PR fortran/100819
        PR fortran/100821
        * trans-array.c (gfc_get_array_span): rework the way character
        array "span" was calculated.
        (gfc_conv_expr_descriptor): improve handling of character sections
        and unlimited polymorphic objects.
        * trans-expr.c (gfc_get_character_len): new function to calculate
        character string length.
        (gfc_get_character_len_in_bytes): new function to calculate
        character string length in bytes.
        (gfc_conv_scalar_to_descriptor): add call to set the "span".
        (gfc_trans_pointer_assignment): set "_len" and antecipate the
        initialization of the deferred character length hidden argument.
        * trans-intrinsic.c (gfc_conv_associated): set "force_no_tmp" to
        avoid the creation of a temporary.
        * trans-types.c (gfc_get_dtype_rank_type): rework type detection
        so that unlimited polymorphic objects get proper type infomation,
        also important for bind(c).
        (gfc_get_dtype): add argument to pass the rank if necessary.
        (gfc_get_array_type_bounds): cosmetic change to have character
        arrays called character instead of unknown.
        * trans-types.h (gfc_get_dtype): modify prototype.
        * trans.c (get_array_span): rework the way character array "span"
        was calculated.
        * trans.h (gfc_get_character_len): new prototype.
        (gfc_get_character_len_in_bytes): new prototype.
        Add "unlimited_polymorphic" flag to "gfc_se" type to signal when
        expression carries an unlimited polymorphic object.

2021-06-04  Harald Anlauf  <anlauf@gmx.de>

        PR fortran/99839
        * frontend-passes.c (inline_matmul_assign): Do not inline matmul
        if the assignment to the resulting array if it is not of canonical
        type (real/integer/complex/logical).

2021-06-04  Tobias Burnus  <tobias@codesourcery.com>

        * dump-parse-tree.c (show_code_node): Handle
        EXEC_OMP_(TARGET_)(,PARALLEL_,TEAMS_)LOOP.

2021-06-04  Tobias Burnus  <tobias@codesourcery.com>

        * scanner.c (skip_fixed_omp_sentinel): Set openacc_flag if
        this is not an (OpenMP) continuation line.
        (skip_fixed_oacc_sentinel): Likewise for openmp_flag and OpenACC.
        (gfc_next_char_literal): gfc_error_now to force error for mixed OMP/ACC
        continuation once per location and return '\n'.

2021-06-04  Tobias Burnus  <tobias@codesourcery.com>

        PR middle-end/99928
        * openmp.c (gfc_match_omp_clauses): Fix typo in error message.

2021-06-04  Tobias Burnus  <tobias@codesourcery.com>

        PR middle-end/99928
        * dump-parse-tree.c (show_omp_clauses): Handle bind clause.
        (show_omp_node): Handle loop directive.
        * frontend-passes.c (gfc_code_walker): Likewise.
        * gfortran.h (enum gfc_statement): Add
        ST_OMP_(END_)(TARGET_)(|PARALLEL_|TEAMS_)LOOP.
        (enum gfc_omp_bind_type): New.
        (gfc_omp_clauses): Use it.
        (enum gfc_exec_op): Add EXEC_OMP_(TARGET_)(|PARALLEL_|TEAMS_)LOOP.
        * match.h (gfc_match_omp_loop, gfc_match_omp_parallel_loop,
        gfc_match_omp_target_parallel_loop, gfc_match_omp_target_teams_loop,
        gfc_match_omp_teams_loop): New.
        * openmp.c (enum omp_mask1): Add OMP_CLAUSE_BIND.
        (gfc_match_omp_clauses): Handle it.
        (OMP_LOOP_CLAUSES, gfc_match_omp_loop, gfc_match_omp_teams_loop,
        gfc_match_omp_target_teams_loop, gfc_match_omp_parallel_loop,
        gfc_match_omp_target_parallel_loop): New.
        (resolve_omp_clauses, resolve_omp_do, omp_code_to_statement,
        gfc_resolve_omp_directive): Handle omp loop.
        * parse.c (decode_omp_directive case_exec_markers, gfc_ascii_statement,
        parse_omp_do, parse_executable): Likewise.
        (parse_omp_structured_block): Remove ST_ which use parse_omp_do.
        * resolve.c (gfc_resolve_blocks): Add omp loop.
        * st.c (gfc_free_statement): Likewise.
        * trans-openmp.c (gfc_trans_omp_clauses): Handle bind clause.
        (gfc_trans_omp_do, gfc_trans_omp_parallel_do, gfc_trans_omp_distribute,
        gfc_trans_omp_teams, gfc_trans_omp_target, gfc_trans_omp_directive):
        Handle loop directive.
        (gfc_split_omp_clauses): Likewise; fix firstprivate/lastprivate
        and (in_)reduction for taskloop.
        * trans.c (trans_code): Handle omp loop directive.

2021-06-01  Tobias Burnus  <tobias@codesourcery.com>

        PR middle-end/99928
        * dump-parse-tree.c (show_omp_node, show_code_node): Handle
        (parallel) master taskloop (simd).
        * frontend-passes.c (gfc_code_walker): Set in_omp_workshare
        to false for parallel master taskloop (simd).
        * gfortran.h (enum gfc_statement):
        Add ST_OMP_(END_)(PARALLEL_)MASTER_TASKLOOP(_SIMD).
        (enum gfc_exec_op): EXEC_OMP_(PARALLEL_)MASTER_TASKLOOP(_SIMD).
        * match.h (gfc_match_omp_master_taskloop,
        gfc_match_omp_master_taskloop_simd,
        gfc_match_omp_parallel_master_taskloop,
        gfc_match_omp_parallel_master_taskloop_simd): New prototype.
        * openmp.c (gfc_match_omp_parallel_master_taskloop,
        gfc_match_omp_parallel_master_taskloop_simd,
        gfc_match_omp_master_taskloop,
        gfc_match_omp_master_taskloop_simd): New.
        (gfc_match_omp_taskloop_simd): Permit 'reduction' clause.
        (resolve_omp_clauses): Handle new combined directives; remove
        inscan-reduction check to reduce multiple errors; add
        task-reduction error for 'taskloop simd'.
        (gfc_resolve_omp_parallel_blocks,
        resolve_omp_do, omp_code_to_statement,
        gfc_resolve_omp_directive): Handle new combined constructs.
        * parse.c (decode_omp_directive, next_statement,
        gfc_ascii_statement, parse_omp_do, parse_omp_structured_block,
        parse_executable): Likewise.
        * resolve.c (gfc_resolve_blocks, gfc_resolve_code): Likewise.
        * st.c (gfc_free_statement): Likewise.
        * trans.c (trans_code): Likewise.
        * trans-openmp.c (gfc_split_omp_clauses,
        gfc_trans_omp_directive): Likewise.
        (gfc_trans_omp_parallel_master): Move after gfc_trans_omp_master_taskloop;
        handle parallel master taskloop (simd) as well.
        (gfc_trans_omp_taskloop): Take gfc_exec_op as arg.
        (gfc_trans_omp_master_taskloop): New.

2021-05-30  Gerald Pfeifer  <gerald@pfeifer.com>

        * gfortran.texi (BOZ literal constants): Fix typo.

2021-05-28  Tobias Burnus  <tobias@codesourcery.com>

        * dump-parse-tree.c (show_iterator): New.
        (show_omp_namelist): Handle iterators.
        (show_omp_clauses): Handle affinity.
        * gfortran.h (gfc_free_omp_namelist): New union with 'udr' and new 'ns'.
        * match.c (gfc_free_omp_namelist): Add are to choose union element.
        * openmp.c (gfc_free_omp_clauses, gfc_match_omp_detach,
        gfc_match_omp_clause_reduction, gfc_match_omp_flush): Update
        call to gfc_free_omp_namelist.
        (gfc_match_omp_variable_list): Likewise; permit preceeding whitespace.
        (enum omp_mask1): Add OMP_CLAUSE_AFFINITY.
        (gfc_match_iterator): New.
        (gfc_match_omp_clauses): Use it; update call to gfc_free_omp_namelist.
        (OMP_TASK_CLAUSES): Add OMP_CLAUSE_AFFINITY.
        (gfc_match_omp_taskwait): Match depend clause.
        (resolve_omp_clauses): Handle affinity; update for udr/union change.
        (gfc_resolve_omp_directive): Resolve clauses of taskwait.
        * st.c (gfc_free_statement): Update gfc_free_omp_namelist call.
        * trans-openmp.c (gfc_trans_omp_array_reduction_or_udr): Likewise
        (handle_iterator): New.
        (gfc_trans_omp_clauses): Handle iterators for depend/affinity clause.
        (gfc_trans_omp_taskwait): Handle depend clause.
        (gfc_trans_omp_directive): Update call.

2021-05-27  Harald Anlauf  <anlauf@gmx.de>

        PR fortran/100602
        * trans-intrinsic.c (gfc_conv_intrinsic_size): Use CLASS data
        attributes for CLASS arrays for generation of runtime error.

2021-05-27  Harald Anlauf  <anlauf@gmx.de>

        PR fortran/100656
        * trans-array.c (gfc_conv_ss_startstride): Do not call check for
        presence of a dummy argument when a symbol actually refers to a
        non-dummy.

2021-05-25  Tobias Burnus  <tobias@codesourcery.com>
            Johannes Nendwich  <a08727063@unet.univie.ac.at>

        * intrinsic.texi (GERROR, GETARGS, GETLOG, NORM2, PARITY, RANDOM_INIT,
        RANDOM_NUMBER): Fix typos and copy'n'paste errors.

2021-05-24  Tobias Burnus  <tobias@codesourcery.com>

        PR fortran/86470
        * trans-expr.c (gfc_copy_class_to_class): Add unshare_expr.
        * trans-openmp.c (gfc_is_polymorphic_nonptr,
        gfc_is_unlimited_polymorphic_nonptr): New.
        (gfc_omp_clause_copy_ctor, gfc_omp_clause_dtor): Handle
        polymorphic scalars.

2021-05-23  Harald Anlauf  <anlauf@gmx.de>

        PR fortran/100551
        * trans-expr.c (gfc_conv_procedure_call): Adjust check for
        implicit conversion of actual argument to an unlimited polymorphic
        procedure argument.

2021-05-23  Tobias Burnus  <tobias@codesourcery.com>

        * intrinsic.texi (ATOMIC_ADD, ATOMIC_FETCH_ADD): Use the
        proper variable name in the description.

2021-05-22  Andre Vehreschild  <vehre@gcc.gnu.org>
            Steve Kargl  <kargl@gcc.gnu.org>

        PR fortran/98301
        * trans-decl.c (gfc_build_builtin_function_decls): Move decl.
        * trans-intrinsic.c (conv_intrinsic_random_init): Use bool for
        lib-call of caf_random_init instead of logical (4-byte).
        * trans.h: Add tree var for random_init.

2021-05-20  Marcel Vollweiler  <marcel@codesourcery.com>

        * openmp.c (gfc_match_omp_clauses): Support map-type-modifier 'close'.

2021-05-18  Tobias Burnus  <tobias@codesourcery.com>

        PR fortran/100642
        * openmp.c (omp_code_to_statement): Add missing EXEC_OMP_DEPOBJ.

2021-05-17  Harald Anlauf  <anlauf@gmx.de>

        PR fortran/98411
        * trans-decl.c (gfc_finish_var_decl): Add check for explicit SAVE
        attribute.

2021-05-17  Tobias Burnus  <tobias@codesourcery.com>

        PR fortran/100633
        * resolve.c (gfc_resolve_code): Reject nonintrinsic assignments in
        OMP WORKSHARE.

2021-05-14  Tobias Burnus  <tobias@codesourcery.com>

        * dump-parse-tree.c (show_omp_node, show_code_node): Handle
        EXEC_OMP_PARALLEL_MASTER.
        * frontend-passes.c (gfc_code_walker): Likewise.
        * gfortran.h (enum gfc_statement): Add ST_OMP_PARALLEL_MASTER and
        ST_OMP_END_PARALLEL_MASTER.
        (enum gfc_exec_op): Add EXEC_OMP_PARALLEL_MASTER..
        * match.h (gfc_match_omp_parallel_master): Handle it.
        * openmp.c (gfc_match_omp_parallel_master, resolve_omp_clauses,
        omp_code_to_statement, gfc_resolve_omp_directive): Likewise.
        * parse.c (decode_omp_directive, case_exec_markers,
        gfc_ascii_statement, parse_omp_structured_block,
        parse_executable): Likewise.
        * resolve.c (gfc_resolve_blocks, gfc_resolve_code): Likewise.
        * st.c (gfc_free_statement): Likewise.
        * trans-openmp.c (gfc_trans_omp_parallel_master,
        gfc_trans_omp_workshare, gfc_trans_omp_directive): Likewise.
        * trans.c (trans_code): Likewise.

2021-05-14  Tobias Burnus  <tobias@codesourcery.com>

        * resolve.c (resolve_symbol): Handle implicit SAVE of main-program
        for vars in 'omp threadprivate' and 'omp declare target'.

2021-05-10  Martin Liska  <mliska@suse.cz>

        * decl.c (variable_decl): Use startswith
        function instead of strncmp.
        (gfc_match_end): Likewise.
        * gfortran.h (gfc_str_startswith): Likewise.
        * module.c (load_omp_udrs): Likewise.
        (read_module): Likewise.
        * options.c (gfc_handle_runtime_check_option): Likewise.
        * primary.c (match_arg_list_function): Likewise.
        * trans-decl.c (gfc_get_symbol_decl): Likewise.
        * trans-expr.c (gfc_conv_procedure_call): Likewise.
        * trans-intrinsic.c (gfc_conv_ieee_arithmetic_function): Likewise.

2021-05-06  Paul Thomas  <pault@gcc.gnu.org>

        PR fortran/46991
        PR fortran/99819
        * class.c (gfc_build_class_symbol): Remove the error that
        disables assumed size class arrays. Class array types that are
        not deferred shape or assumed rank are given a unique name and
        placed in the procedure namespace.
        * trans-array.c (gfc_trans_g77_array): Obtain the data pointer
        for class arrays.
        (gfc_trans_dummy_array_bias): Suppress the runtime error for
        extent violations in explicit shape class arrays because it
        always fails.
        * trans-expr.c (gfc_conv_procedure_call): Handle assumed size
        class actual arguments passed to non-descriptor formal args by
        using the data pointer, stored as the symbol's backend decl.

2021-05-05  Harald Anlauf  <anlauf@gmx.de>

        PR fortran/100274
        * interface.c (gfc_compare_actual_formal): Continue checks after
        emitting warning for argument length mismatch.
        * trans-expr.c (gfc_conv_procedure_call): Check for NULL pointer
        dereference.

2021-05-04  Tobias Burnus  <tobias@codesourcery.com>

        PR testsuite/100397
        * trans-openmp.c (gfc_trans_omp_depobj): Fix pasto in enum values.

2021-04-28  Tobias Burnus  <tobias@codesourcery.com>

        * openmp.c (gfc_match_omp_variable_list): Gobble whitespace before
        checking whether a '%' or parenthesis-open follows as next character.

2021-04-28  José Rui Faustino de Sousa  <jrfsousa@gmail.com>

        PR fortran/82376
        * trans-expr.c (gfc_conv_procedure_call): Evaluate function result
        and then pass a pointer.

2021-04-26  Thomas Schwinge  <thomas@codesourcery.com>
            Nathan Sidwell  <nathan@codesourcery.com>
            Tom de Vries  <vries@codesourcery.com>
            Julian Brown  <julian@codesourcery.com>
            Kwok Cheung Yeung  <kcy@codesourcery.com>

        * lang.opt (Wopenacc-parallelism): New.

2021-04-24  Harald Anlauf  <anlauf@gmx.de>

        PR fortran/100154
        * check.c (variable_check): Allow function reference having a data
        pointer result.
        (arg_strlen_is_zero): New function.
        (gfc_check_fgetputc_sub): Add static check of character and status
        arguments.
        (gfc_check_fgetput_sub): Likewise.
        * intrinsic.c (add_subroutines): Fix argument name for the
        character argument to intrinsic subroutines fget[c], fput[c].

2021-04-24  Harald Anlauf  <anlauf@gmx.de>

        PR fortran/100218
        * expr.c (gfc_check_vardef_context): Extend check to allow pointer
        from a function reference.

2021-04-22  Martin Liska  <mliska@suse.cz>

        PR testsuite/100159
        PR testsuite/100192
        * frontend-passes.c (optimize_expr): Fix typos and missing comments.

2021-04-22  Michael Meissner  <meissner@linux.ibm.com>

        PR fortran/96983
        * trans-intrinsic.c (build_round_expr): If int type is larger than
        long long, do the round and convert to the integer type.  Do not
        try to find a floating point type the exact size of the integer
        type.

2021-04-21  Tobias Burnus  <tobias@codesourcery.com>

        * dump-parse-tree.c (show_omp_namelist): Handle depobj + mutexinoutset
        in the depend clause.
        (show_omp_clauses, show_omp_node, show_code_node): Handle depobj.
        * gfortran.h (enum gfc_statement): Add ST_OMP_DEPOBJ.
        (enum gfc_omp_depend_op): Add OMP_DEPEND_UNSET,
        OMP_DEPEND_MUTEXINOUTSET and OMP_DEPEND_DEPOBJ.
        (gfc_omp_clauses): Add destroy, depobj_update and depobj.
        (enum gfc_exec_op): Add EXEC_OMP_DEPOBJ
        * match.h (gfc_match_omp_depobj): Match 'omp depobj'.
        * openmp.c (gfc_match_omp_clauses): Add depobj + mutexinoutset
        to depend clause.
        (gfc_match_omp_depobj, resolve_omp_clauses, gfc_resolve_omp_directive):
        Handle 'omp depobj'.
        * parse.c (decode_omp_directive, next_statement, gfc_ascii_statement):
        Likewise.
        * resolve.c (gfc_resolve_code): Likewise.
        * st.c (gfc_free_statement): Likewise.
        * trans-openmp.c (gfc_trans_omp_clauses): Handle depobj + mutexinoutset
        in the depend clause.
        (gfc_trans_omp_depobj, gfc_trans_omp_directive): Handle EXEC_OMP_DEPOBJ.
        * trans.c (trans_code): Likewise.

2021-04-20  Paul Thomas  <pault@gcc.gnu.org>

        PR fortran/100110
        * trans-decl.c (gfc_get_symbol_decl): Replace test for host
        association with a check that the current and symbol namespaces
        are the same.

2021-04-19  Thomas Schwinge  <thomas@codesourcery.com>

        * lang.opt (fopenacc-kernels=): Remove.

2021-04-16  José Rui Faustino de Sousa  <jrfsousa@gmail.com>

        PR fortran/100094
        * trans-array.c (gfc_trans_deferred_array): Add code to initialize
        pointers and allocatables with correct TKR parameters.

2021-04-16  José Rui Faustino de Sousa  <jrfsousa@gmail.com>

        PR fortran/100018
        * resolve.c: Add association check before de-referencing pointer.

2021-04-16  Harald Anlauf  <anlauf@gmx.de>
            Paul Thomas  <pault@gcc.gnu.org>

        PR fortran/63797
        * module.c (write_symtree): Do not write interface of intrinsic
        procedure to module file for F2003 and newer.

2021-04-15  Paul Thomas  <pault@gcc.gnu.org>

        PR fortran/99307
        * symbol.c: Remove trailing white space.
        * trans-array.c (gfc_trans_create_temp_array): Create a class
        temporary for class expressions and assign the new descriptor
        to the data field.
        (build_class_array_ref): If the class expr can be extracted,
        then use that for 'decl'. Class function results are reliably
        handled this way. Call gfc_find_and_cut_at_last_class_ref to
        eliminate largely redundant code. Remove dead code and recast
        the rest of the code to extract 'decl' for remaining cases.
        Call gfc_build_spanned_array_ref.
        (gfc_alloc_allocatable_for_assignment): Use class descriptor
        element length for 'elemsize1'. Eliminate repeat set of dtype
        for class expressions.
        * trans-expr.c (gfc_find_and_cut_at_last_class_ref): Include
        additional code from build_class_array_ref, and use optional
        gfc_typespec pointer argument.
        (gfc_trans_scalar_assign): Make use of pre and post blocks for
        all class expressions.
        * trans.c (get_array_span): For unlimited polymorphic exprs
        multiply the span by the value of the _len field.
        (gfc_build_spanned_array_ref): New function.
        (gfc_build_array_ref): Call gfc_build_spanned_array_ref and
        eliminate repeated code.
        * trans.h: Add arg to gfc_find_and_cut_at_last_class_ref and
        add prototype for gfc_build_spanned_array_ref.

2021-04-14  Martin Liska  <mliska@suse.cz>

        * intrinsic.texi: The table has first column empty and it makes
        trouble when processing makeinfo --xml output.

2021-04-09  Tobias Burnus  <tobias@codesourcery.com>

        PR fortran/99817
        * trans-types.c (gfc_get_function_type): Also generate hidden
        coarray argument for character arguments.

2021-04-03  Paul Thomas  <pault@gcc.gnu.org>

        PR fortran/99818
        * interface.c (compare_parameter): The codimension attribute is
        applied to the _data field of class formal arguments.

2021-04-01  Harald Anlauf  <anlauf@gmx.de>

        PR fortran/99840
        * simplify.c (gfc_simplify_transpose): Properly initialize
        resulting shape.

2021-03-28  Paul Thomas  <pault@gcc.gnu.org>

        PR fortran/99602
        * trans-expr.c (gfc_conv_procedure_call): Use the _data attrs
        for class expressions and detect proc pointer evaluations by
        the non-null actual argument list.

2021-03-27  Steve Kargl  <kargl@gcc.gnu.org>

        * misc.c (gfc_typename): Fix off-by-one in buffer sizes.

2021-03-26  Tobias Burnus  <tobias@codesourcery.com>

        PR fortran/99651
        * intrinsic.c (gfc_intrinsic_func_interface): Set
        attr.proc = PROC_INTRINSIC if FL_PROCEDURE.

2021-03-24  Tobias Burnus  <tobias@codesourcery.com>

        PR fortran/99369
        * resolve.c (resolve_operator): Make 'msg' buffer larger
        and use snprintf.

2021-03-23  Tobias Burnus  <tobias@codesourcery.com>

        PR fortran/93660
        * trans-decl.c (build_function_decl): Add comment;
        increment hidden_typelist for caf_token/caf_offset.
        * trans-types.c (gfc_get_function_type): Add comment;
        add missing caf_token/caf_offset args.

2021-03-22  Tobias Burnus  <tobias@codesourcery.com>

        PR fortran/99688
        * match.c (select_type_set_tmp, gfc_match_select_type,
        gfc_match_select_rank): Fix 'name' buffersize to avoid out of bounds.
        * resolve.c (resolve_select_type): Likewise.

2021-03-19  Thomas Koenig  <tkoenig@gcc.gnu.org>

        * frontend-passes.c (inline_limit_check): Add rank_a
        argument. If a is rank 1, set the second dimension to 1.
        (inline_matmul_assign): Pass rank_a argument to inline_limit_check.
        (call_external_blas): Likewise.

2021-03-15  Thomas Koenig  <tkoenig@gcc.gnu.org>

        PR fortran/99345
        * frontend-passes.c (doloop_contained_procedure_code):
        Properly handle EXEC_IOLENGTH.

2021-03-15  Paul Thomas  <pault@gcc.gnu.org>

        PR fortran/99545
        * trans-stmt.c (gfc_trans_allocate): Mark the initialization
        assignment by setting init_flag.

2021-03-14  Harald Anlauf  <anlauf@gmx.de>
            Paul Thomas  <pault@gcc.gnu.org>

        * trans-expr.c (gfc_conv_procedure_call): Fix runtime checks for
        CLASS arguments.
        * trans-intrinsic.c (gfc_conv_intrinsic_size): Likewise.

2021-03-13  Paul Thomas  <pault@gcc.gnu.org>

        PR fortran/99125
        * trans-array.c (gfc_conv_expr_descriptor): For deferred length
        length components use the ss_info string length instead of
        gfc_get_expr_charlen. Make sure that the deferred string length
        is a variable before assigning to it. Otherwise use the expr.
        * trans-expr.c (gfc_conv_string_length): Make sure that the
        deferred string length is a variable before assigning to it.

2021-03-12  Tobias Burnus  <tobias@codesourcery.com>

        PR fortran/99514
        * resolve.c (resolve_symbol): Accept vars which are in DATA
        and hence (either) implicit SAVE (or in common).

2021-03-10  Harald Anlauf  <anlauf@gmx.de>

        PR fortran/99205
        * data.c (gfc_assign_data_value): Reject non-constant character
        length for lvalue.
        * trans-array.c (gfc_conv_array_initializer): Restrict loop to
        elements which are defined to avoid NULL pointer dereference.

2021-03-10  Tobias Burnus  <tobias@codesourcery.com>

        * intrinsic.texi (MIN): Correct 'maximum' to 'minimum'.

2021-03-10  Eric Botcazou  <ebotcazou@adacore.com>

        PR fortran/96983
        * trans-intrinsic.c (build_round_expr): Do not implicitly assume
        that __float128 is the 128-bit floating-point type.

2021-03-08  Harald Anlauf  <anlauf@gmx.de>

        PR fortran/49278
        * data.c (gfc_assign_data_value): Reject variable with PARAMETER
        attribute in DATA statement.

2021-03-05  Tobias Burnus  <tobias@codesourcery.com>

        PR fortran/99355
        PR fortran/57871
        * invoke.texi (-freal{4,8}-real-*): Extend description.
        * primary.c (match_real_constant): Also promote real literals
        with '_kind' number.

2021-03-04  Tobias Burnus  <tobias@codesourcery.com>

        PR fortran/99355
        * decl.c (gfc_match_old_kind_spec, gfc_match_kind_spec): Avoid
        redoing kind conversions.
        * primary.c (match_real_constant): Likewise.

2021-02-28  Jakub Jelinek  <jakub@redhat.com>

        PR fortran/99303
        * openmp.c (gfc_omp_requires_add_clause): Fix up diagnostic message
        wordings.
        (resolve_omp_clauses): Likewise.

2021-02-28  Jakub Jelinek  <jakub@redhat.com>

        PR fortran/99300
        * frontend-passes.c (doloop_code): Replace double space in diagnostics
        with a single space.

2021-02-24  Paul Thomas  <pault@gcc.gnu.org>

        PR fortran/98342
        * trans-expr.c (gfc_conv_derived_to_class): Add optional arg.
        'derived_array' to hold the fixed, parmse expr in the case of
        assumed rank formal arguments. Deal with optional arguments.
        (gfc_conv_procedure_call): Null 'derived' array for each actual
        argument. Add its address to the call to gfc_conv_derived_to_
        class. Access the 'data' field of scalar descriptors before
        deallocating allocatable components. Also strip NOPs before the
        calls to gfc_deallocate_alloc_comp. Use 'derived' array as the
        input to gfc_deallocate_alloc_comp if it is available.
        * trans.h : Include the optional argument 'derived_array' to
        the prototype of gfc_conv_derived_to_class. The default value
        is NULL_TREE.

2021-02-23  Paul Thomas  <pault@gcc.gnu.org>

        PR fortran/99124
        * resolve.c (resolve_fl_procedure): Include class results in
        the test for F2018, C15100.
        * trans-array.c (get_class_info_from_ss): Do not use the saved
        descriptor to obtain the class expression for variables. Use
        gfc_get_class_from_expr instead.

2021-02-23  Harald Anlauf  <anlauf@gmx.de>

        PR fortran/99206
        * simplify.c (gfc_simplify_reshape): Set string length for
        character arguments.

2021-02-22  Tobias Burnus  <tobias@codesourcery.com>

        PR fortran/99171
        * trans-openmp.c (gfc_omp_is_optional_argument): Regard optional
        dummy procs as nonoptional as no special treatment is needed.

2021-02-21  Harald Anlauf  <anlauf@gmx.de>

        * trans-expr.c (gfc_conv_procedure_call): Do not add clobber to
        allocatable intent(out) argument.

2021-02-19  Jerry DeLisle  <jvdelisle@gcc.gnu.org>

        PR fortran/98686
        * match.c (gfc_match_namelist): If BT_UNKNOWN, check for
        IMPLICIT NONE and and issue an error, otherwise set the type
        to its IMPLICIT type so that any subsequent use of objects will
        will confirm their types.

2021-02-19  Harald Anlauf  <anlauf@gmx.de>

        * symbol.c (gfc_add_flavor): Reverse order of conditions.

2021-02-19  Tobias Burnus  <tobias@codesourcery.com>

        PR fortran/99010
        * dependency.c (gfc_dep_resolver): Fix coarray handling.

2021-02-19  Tobias Burnus  <tobias@codesourcery.com>

        PR fortran/99146
        * interface.c:

2021-02-19  Tobias Burnus  <tobias@codesourcery.com>

        PR fortran/99027
        * simplify.c (simplify_bound_dim): Honor DIMEN_ELEMENT
        when using dim=.

2021-02-17  Julian Brown  <julian@codesourcery.com>

        * openmp.c (resolve_omp_clauses): Disallow selecting components
        of arrays of derived type.

2021-02-17  Julian Brown  <julian@codesourcery.com>

        * trans-openmp.c (gfc_trans_omp_clauses): Handle element selection
        for arrays of derived types.

2021-02-16  Tobias Burnus  <tobias@codesourcery.com>

        * expr.c (gfc_is_simplify_contiguous): Handle REF_INQUIRY, i.e.
        %im and %re which are EXPR_VARIABLE.
        * openmp.c (resolve_omp_clauses): Diagnose %re/%im explicitly.

2021-02-16  Tobias Burnus  <tobias@codesourcery.com>

        PR fortran/99111
        * io.c (resolve_tag_format): Reject BT_DERIVED/CLASS/VOID
        as (array-valued) FORMAT tag.

2021-02-12  Tobias Burnus  <tobias@codesourcery.com>

        PR fortran/99043
        * trans-expr.c (gfc_conv_procedure_call): Don't reset
        rank of assumed-rank array.

2021-02-11  Paul Thomas  <pault@gcc.gnu.org>

        PR fortran/98897
        * match.c (gfc_match_call): Include associate names as possible
        entities with typebound subroutines. The target needs to be
        resolved for the type.

2021-02-11  Paul Thomas  <pault@gcc.gnu.org>

        PR fortran/99060
        * primary.c (gfc_match_varspec): Test for non-null 'previous'
        before using its name in the error message.

2021-02-11  Tobias Burnus  <tobias@codesourcery.com>

        * intrinsic.texi (FINDLOC): Add 'MASK' to argument table.
        (MAXLOC, MAXVAL, MINLOC, MINVAL): For 'MASK', remove 'an
        array' as scalars are also permitted.

2021-02-10  Julian Brown  <julian@codesourcery.com>

        PR fortran/98979
        * openmp.c (resolve_omp_clauses): Omit OpenACC update in
        contiguity check and stride-specified error.

2021-02-04  Julian Brown  <julian@codesourcery.com>

        * openmp.c (resolve_omp_clauses): Omit OpenACC update in
        contiguity check and stride-specified error.

2021-02-04  Julian Brown  <julian@codesourcery.com>

        * trans-openmp.c (gfc_trans_omp_clauses): Use class_pointer attribute
        for BT_CLASS.

2021-02-04  Julian Brown  <julian@codesourcery.com>

        * trans-openmp.c (gfc_trans_omp_clauses): Fix dereferencing for
        BT_DERIVED members.

2021-02-04  Tobias Burnus  <tobias@codesourcery.com>

        * openmp.c (resolve_omp_clauses): Explicitly diagnose
        substrings as not permitted.

2021-02-03  Jeff Law  <law@redhat.com>

        * intrinsic.texi (ANINT): Fix typo.

2021-02-03  Tobias Burnus  <tobias@codesourcery.com>

        PR fortran/98913
        * dependency.c (gfc_dep_resolver): Treat local access
        to coarrays like any array access in dependency analysis.

2021-01-28  Harald Anlauf  <anlauf@gmx.de>

        PR fortran/86470
        * trans.c (gfc_call_malloc): Allocate area of size 1 if passed
        size is NULL (as documented).

2021-01-27  Paul Thomas  <pault@gcc.gnu.org>

        PR fortran/93924
        PR fortran/93925
        * trans-expr.c (gfc_conv_procedure_call): Suppress the call to
        gfc_conv_intrinsic_to_class for unlimited polymorphic procedure
        pointers.
        (gfc_trans_assignment_1): Similarly suppress class assignment
        for class valued procedure pointers.

2021-01-27  Paul Thomas  <pault@gcc.gnu.org>

        PR fortran/98472
        * trans-array.c (gfc_conv_expr_descriptor): Include elemental
        procedure pointers in the assert under the comment 'elemental
        function' and eliminate the second, spurious assert.

2021-01-25  Harald Anlauf  <anlauf@gmx.de>

        PR fortran/70070
        * data.c (create_character_initializer): Check substring indices
        against bounds.
        (gfc_assign_data_value): Catch error returned from
        create_character_initializer.

2021-01-25  Tobias Burnus  <tobias@codesourcery.com>

        * intrinsic.texi (CO_BROADCAST, CO_MIN, CO_REDUCE, CO_SUM): Fix typos.

2021-01-25  Steve Kargl  <kargl@gcc.gnu.org>

        PR fortran/98517
        * resolve.c (resolve_charlen): Check that length expression is
        present before testing for scalar/integer..

2021-01-22  Paul Thomas  <pault@gcc.gnu.org>

        PR fortran/98565
        * trans-intrinsic.c (gfc_conv_associated): Do not add a _data
        component for scalar class function targets. Instead, fix the
        function result and access the _data from that.

2021-01-21  Jorge D'Elia  <jdelia@cimec.unl.edu.ar>

        * intrinsic.texi (CO_MAX): Fix typo.

2021-01-21  Paul Thomas  <pault@gcc.gnu.org>

        PR fortran/96320
        * decl.c (gfc_match_modproc): It is not an error to find a
        module procedure declaration within a contains block.
        * expr.c (gfc_check_vardef_context): Pure procedure result is
        assignable. Change 'own_scope' accordingly.
        * resolve.c (resolve_typebound_procedure): A procedure that
        has the module procedure attribute is almost certainly a
        module procedure, whatever its interface.

2021-01-19  Tobias Burnus  <tobias@codesourcery.com>

        PR fortran/98476
        * openmp.c (resolve_omp_clauses): Change use_device_ptr
        to use_device_addr for unless type(c_ptr); check all
        list item for is_device_ptr.

2021-01-16  Kwok Cheung Yeung  <kcy@codesourcery.com>

        * dump-parse-tree.c (show_omp_clauses): Handle detach clause.
        * frontend-passes.c (gfc_code_walker): Walk detach expression.
        * gfortran.h (struct gfc_omp_clauses): Add detach field.
        (gfc_c_intptr_kind): New.
        * openmp.c (gfc_free_omp_clauses): Free detach clause.
        (gfc_match_omp_detach): New.
        (enum omp_mask1): Add OMP_CLAUSE_DETACH.
        (enum omp_mask2): Remove OMP_CLAUSE_DETACH.
        (gfc_match_omp_clauses): Handle OMP_CLAUSE_DETACH for OpenMP.
        (OMP_TASK_CLAUSES): Add OMP_CLAUSE_DETACH.
        (resolve_omp_clauses): Prevent use of detach with mergeable and
        overriding the data sharing mode of the event handle.
        * trans-openmp.c (gfc_trans_omp_clauses): Handle detach clause.
        * trans-types.c (gfc_c_intptr_kind): New.
        (gfc_init_kinds): Initialize gfc_c_intptr_kind.
        * types.def
        (BT_FN_VOID_OMPFN_PTR_OMPCPYFN_LONG_LONG_BOOL_UINT_PTR_INT): Rename
        to...
        (BT_FN_VOID_OMPFN_PTR_OMPCPYFN_LONG_LONG_BOOL_UINT_PTR_INT_PTR):
        ...this.  Add extra argument.

2021-01-14  Harald Anlauf  <anlauf@gmx.de>

        * gfortran.h (gfc_resolve_substring): Add prototype.
        * primary.c (match_string_constant): Simplify substrings with
        constant starting and ending points.
        * resolve.c: Rename resolve_substring to gfc_resolve_substring.
        (gfc_resolve_ref): Use renamed function gfc_resolve_substring.

2021-01-14  Harald Anlauf  <anlauf@gmx.de>

        PR fortran/98661
        * resolve.c (resolve_component): Derived type components with
        ALLOCATABLE or POINTER attribute shall have a deferred shape.

2021-01-14  Harald Anlauf  <anlauf@gmx.de>

        Revert:
        2021-01-14  Harald Anlauf  <anlauf@gmx.de>

        PR fortran/98661
        * resolve.c (resolve_component): Derived type components with
        ALLOCATABLE or POINTER attribute shall have a deferred shape.

2021-01-14  Harald Anlauf  <anlauf@gmx.de>

        PR fortran/98661
        * resolve.c (resolve_component): Derived type components with
        ALLOCATABLE or POINTER attribute shall have a deferred shape.

2021-01-08  Paul Thomas  <pault@gcc.gnu.org>

        PR fortran/93794
        * trans-expr.c (gfc_conv_component_ref): Remove the condition
        that deferred character length components only be allocatable.

2021-01-08  Paul Thomas  <pault@gcc.gnu.org>

        PR fortran/98458
        * simplify.c (is_constant_array_expr): If an array constructor
        expression has elements other than constants or structures, try
        fixing the expression with gfc_reduce_init_expr. Also, if shape
        is NULL, obtain the array size and set it.

2021-01-07  Paul Thomas  <pault@gcc.gnu.org>

        PR fortran/93701
        * resolve.c (find_array_spec): Put static prototype for
        resolve_assoc_var before this function and call for associate
        variables.

2021-01-06  Harald Anlauf  <anlauf@gmx.de>

        * resolve.c (resolve_component): Add check for valid CLASS
        reference before trying to access CLASS data.

2021-01-04  Martin Liska  <mliska@suse.cz>

        * ChangeLog-2018: Remove duplicate ChangeLog entries.

2021-01-01  Harald Anlauf  <anlauf@gmx.de>

        * class.c (gfc_find_vtab): Add check on attribute is_class.

2021-01-01  Jakub Jelinek  <jakub@redhat.com>

        * gfortranspec.c (lang_specific_driver): Update copyright notice
        dates.
        * gfc-internals.texi: Bump @copying's copyright year.
        * gfortran.texi: Ditto.
        * intrinsic.texi: Ditto.
        * invoke.texi: Ditto.

2021-01-01  Jakub Jelinek  <jakub@redhat.com>

        * ChangeLog-2020: Rotate ChangeLog.  New file.

\f
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