Reorder IDENTIFIER flags

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

2017-06-22  Nathan Sidwell  <nathan@acm.org>

        Reorder IDENTIFIER flags
        gcc/cp/
        * cp-tree.h (enum cp_identifier_kind): New.
        (IDENTIFIER_KIND_BIT_0, IDENTIFIER_KIND_BIT_1,
        IDENTIFIER_KIND_BIT_2): New.
        (IDENTIFIER_MARKED): Move to TREE_LANG_FLAG_4.
        (IDENTIFIER_VIRTUAL_P, IDENTIFIER_REPO_CHOSEN): Add IDENTIFIER_CHECK.
        (C_IS_RESERVED_WORD): Replace with ...
        (IDENTIFIER_KEYWORD_P): ... this.
        (IDENTIFIER_CTOR_OR_DTOR_P): Replace with ...
        (IDENTIFIER_CDTOR_P): ... this.
        (IDENTIFIER_CTOR_P, IDENTIFIER_DTOR_P): New.
        (IDENTIFIER_OPNAME_P): Replace with ...
        (IDENTIFIER_ANY_OP_P): ... this.
        (IDENTIFIER_ASSIGN_OP_P): New.
        (IDENTIFIER_TYPENAME_P): Replace with ...
        (IDENTIFIER_CONV_OP_P): ... this.
        (NEW_DELETE_OPNAME_P): Replace with ...
        (IDENTIFIER_NEWDEL_OP_P): ... this.
        (DECL_CONV_FN_P, DECL_OVERLOADED_OPERATOR_P): Adjust.
        (get_identifier_kind_name, set_identifier_kind): Declare.
        * lex.c (get_identifier_kind_name, set_identifier_kind): New.
        (init_operators): Adjust to avoid keywords, use
        set_identifier_kind. Copy TYPE_EXPR slot.
        (init_reswords): Call set_identifier_kind.
        (unqualified_name_lookup_error): Adjust.
        * operators.def (TYPE_EXPR): Remove.
        * decl.c (struct predefined_identifier): Move into ...
        (initialize_predefined_identifiers): ... here.  Call
        set_identifier_kind.
        (grokfndecl, check_var_type, grokdeclarator): Adjust.
        (grok_op_properties): Use IDENTIFIER_ANY_ASSIGN_OP to halve search
        space.  Adjust.
        * call.c (name_as_c_string): Adjust.
        (build_new_method_call_1): Likewise.
        * cp-cilkplus.c (is_conversion_operator_function_decl_p): Likewise.
        * cxx-pretty-print.c (pp_cxx_unqualified_id): Adjust.
        * dump.c (cp_dump_tree): Adjust.
        * error.c (dump_decl_name): Adjust.
        * mangle.c (write_unqualified_id, write_member_name,
        write_expression): Adjust.
        (mangle_conv_op_name_for_type): Use set_identifier_kind.
        * name-lookup.c (do_class_using_decl): Adjust.
        (lookup_name_fuzzy, lookup_name_real_1): Likewise.
        * parser.c (cp_lexer_get_preprocessor_token,
        cp_parser_direct_declarator): Likewise.
        * pt.c (push_template_decl_real, tsubst_decl, tsubst_baselink,
        tsubst_copy, tsubst_copy_and_build): Adjust.
        * ptree.c (cxx_print_identifier): Print identifier kind.
        * search.c (lookup_field_r, lookup_member,
        lookup_fnfields_idx_nolazy): Adjust.
        * semantics.c (finish_id_expression): Adjust..
        * typeck.c (cp_build_addr_expr_1): Adjust.

2017-06-21  Jakub Jelinek  <jakub@redhat.com>

        PR c++/81154
        * semantics.c (handle_omp_array_sections_1, finish_omp_clauses):
        Complain about t not being a variable if t is OVERLOAD even
        when processing_template_decl.

2017-06-21  David Malcolm  <dmalcolm@redhat.com>

        * parser.c (get_cast_suggestion): New function.
        (maybe_add_cast_fixit): New function.
        (cp_parser_cast_expression): Capture the location of the closing
        parenthesis.  Call maybe_add_cast_fixit when emitting warnings
        about old-style casts.

2017-06-20  Jason Merrill  <jason@redhat.com>

        PR c++/80972 - C++17 ICE with attribute packed.
        * call.c (build_over_call): Allow a TARGET_EXPR from reference
        binding.

2017-06-20  Nathan Sidwell  <nathan@acm.org>

        * cp-tree.h (CPTI_NELTS_IDENTIFIER): Delete.
        (nelts_identifier): Delete.
        * decl.c (initialize_predefined_identifiers): Remove nelts.

        PR c++/67074 - namespace aliases
        * decl.c (duplicate_decls): Don't error here on mismatched
        namespace alias.
        * name-lookup.c (name_lookup::add_value): Matching namespaces are
        not ambiguous.
        (diagnose_name_conflict): Namespaces are never redeclarations.
        (update_binding): An alias can match a real namespace.

2017-06-19  Jason Merrill  <jason@redhat.com>

        PR c++/80562 - ICE with constexpr if.
        * semantics.c (finish_if_stmt_cond): Call
        instantiate_non_dependent_expr.

        PR c++/80829 - ICE with constexpr copy of base subobject.
        * constexpr.c (clear_no_implicit_zero): New.
        (cxx_eval_call_expression): Call it.

2017-06-19  Nathan Sidwell  <nathan@acm.org>

        PR c++/81124
        PR c++/79766
        * name-lookup.c (set_decl_namespace): Don't follow using
        directives and ignore using decls.  Only check overly-explicit
        scope after discovering decl.

2017-06-19  Jason Merrill  <jason@redhat.com>

        PR c++/81073 - constexpr and static var in statement-expression.
        * typeck2.c (store_init_value): Always call
        require_potential_constant_expression.
        * pt.c (convert_nontype_argument): Likewise.
        * constexpr.c (potential_constant_expression_1): Adjust message.
        Use decl_maybe_constant_var_p instead of decl_constant_var_p.
        * decl2.c (decl_maybe_constant_var_p): Consider initializer.

2017-06-19  Nathan Sidwell  <nathan@acm.org>

        * pt.c (coerce_template_parms): Fix indentation.
        (tsubst_decl): Remove repeated SET_DECL_RTL.  Move VAR_P handling
        in to single block.

        PR c++/81119
        * name-lookup.c (update_binding): Only warn about constructors
        hidden by functions.

2017-06-17  Jason Merrill  <jason@redhat.com>

        PR c++/60063 - -Wunused-local-typedefs and templates.
        * decl2.c (is_late_template_attribute): Return false for "used".

        PR c++/70844 - -Wuseless-cast and inheriting constructor.
        * method.c (forward_parm): Suppress warn_useless_cast.

2017-06-16  Jason Merrill  <jason@redhat.com>

        PR c++/81045 - Wrong type-dependence with auto return type.
        * pt.c (type_dependent_expression_p): An undeduced auto outside the
        template isn't dependent.
        * call.c (build_over_call): Instantiate undeduced auto even in a
        template.

        PR c++/80465 - ICE with generic lambda with noexcept-specifier.
        * lambda.c (maybe_add_lambda_conv_op): Keep processing_template_decl
        set longer for a generic lambda.

        PR c++/80614 - Wrong mangling for C++17 noexcept type
        * mangle.c (write_type): Put the eh spec back on the function type.

        PR c++/81102 - Wrong error with partial specialization.
        * pt.c (unify) [TEMPLATE_PARM_INDEX]: Strip reference when comparing
        types.  Do type deduction later.

        PR c++/81074 - ICE with partial specialization of member template.
        PR c++/71747
        * pt.c (get_partial_spec_bindings): Only coerce innermost args.

        PR c++/80831 - ICE with -fsyntax-only.
        * decl2.c (c_parse_final_cleanups): Use cgraph_node::get_create.

        PR c++/80639 - ICE with invalid PMF initialization.
        PR c++/80043 - ICE with -fpermissive
        * typeck.c (convert_for_assignment): Recurse when instantiate_type
        returns without an error.

2017-06-16  Nathan Sidwell  <nathan@acm.org>

        * pt.c (tsubst_baselink): Fix & clarify formatting.

        * cp-tree.h (build_this_parm, cp_build_parm_decl,
        build_artificial_parm): Add FN parm.
        * decl.c (start_cleanup_fn): Adjust.
        (build_this_parm): Add FN parm, pass it through.
        (grokfndecl): Adjust parm building.
        * decl2.c (cp_build_parm_decl): Add FN parm, set context.
        (build_artificial_parm): Add FN parm, pass through.
        (maybe_retrofit_in_chrg): Adjust parm building.
        (start_static_storage_duration_function): Likwise.
        * lambda.c (maybe_aadd_lambda_conv_op): Likewise.
        * method.c (implicitly_declare_fn): Likewise.
        * parser.c (inject_this_parameter): Likewise.

        Symbol tables are insert only.
        * cp-tree.h (default_hash_traits <lang_identifier *>): Don't
        derive from pointer_hash.  Make undeletable.

        * class.c (resort_type_method_vec): Avoid potential unsigned
        overflow.

        Don't defer noexcept_deferred_spec.
        * cp-tree.h (unevaluated_noexcept_spec): Don't declare.
        * decl.c (cxx_init_decl_processing): Initialize
        noexcept_deferred_spec.
        * except.c (unevaluated_noexcept_spec): Delete.
        * class.c (deduce_noexcept_on_destructor): Use
        noexcept_deferred_spec directly.
        * method.c (implicitly_declare_fn): Likewise.

        Make keyed_classes a vector.
        * cp-tree.h (CPTI_KEYED_CLASSES, keyed_classes): Delete.
        (keyed_classes): Declare as vector.
        * decl.c (keyed_classes): Define.
        (cxx_init_decl_processing): Allocate it.
        (record_key_method_defined): Use vec_safe_push.
        * class.c (finish_struct_1): Likewise.
        * pt.c (instantiate_class_template_1): Likewise.
        * decl2.c (c_parse_final_cleanups): Reverse iterate keyed_classes.

        Make rtti lazier
        * rtti.c (enum tinfo_kind): Add TK_DERIVED_TYPES,
        TK_VMI_CLASS_TYPES, TK_MAX.  Delete TK_FIXED.
        (tinfo_names): New.
        (typeid_ok_p): Add quotes to error messages.  Use get_tinfo_desc.
        (get_tinfo_decl): Use get_tinfo_desc.
        (get_pseudo_ti_init): Likewise. Adjust VMI construction.
        (create_pseudo_type_info): Delete.
        (get_pseudo_ti_index): Just determine the index.
        (get_tinfo_desc): New.  Create all types lazily.
        (create_tinfo_types): Just allocate the descriptor array.
        (emit_support_tinfos): Use non-inserting type lookup.  Set builtin
        location.

2017-06-15  Martin Sebor  <msebor@redhat.com>

        PR c++/80560
        * call.c (first_non_public_field, maybe_warn_class_memaccess): New
        functions.
        (has_trivial_copy_assign_p, has_trivial_copy_p): Ditto.
        (build_cxx_call): Call maybe_warn_class_memaccess.

2017-06-14  Jakub Jelinek  <jakub@redhat.com>

        * cp-gimplify.c (cp_genericize_r): Turn most of the function
        into a switch (TREE_CODE (stmt)) statement from long else if
        sequence.

2017-06-13  Jakub Jelinek  <jakub@redhat.com>

        PR c++/80973
        * cp-gimplify.c (cp_genericize_r): Don't instrument MEM_REF second
        argument even if it has REFERENCE_TYPE.

        PR c++/80984
        * cp-gimplify.c (cp_genericize): Only look for VAR_DECLs in
        BLOCK_VARS (outer) chain.
        (cxx_omp_const_qual_no_mutable): Likewise.

2017-06-13  Martin Liska  <mliska@suse.cz>

        PR sanitize/78204
        * class.c (build_base_path): Use sanitize_flags_p.
        * cp-gimplify.c (cp_genericize_r): Likewise.
        (cp_genericize_tree): Likewise.
        (cp_genericize): Likewise.
        * cp-ubsan.c (cp_ubsan_instrument_vptr_p): Likewise.
        * decl.c (compute_array_index_type): Likewise.
        (start_preparsed_function): Likewise.
        * decl2.c (one_static_initialization_or_destruction): Likewise.
        * init.c (finish_length_check): Likewise.
        * lambda.c (maybe_add_lambda_conv_op): Likewise.
        * typeck.c (cp_build_binary_op): Likewise.
        (build_static_cast_1): Likewise.

2017-06-11  Jason Merrill  <jason@redhat.com>

        * error.c (dump_expr): Use is_this_parameter.

        * cp-tree.h, decl2.c, mangle.c, parser.c, pt.c, semantics.c: Use
        id_equal.

2017-06-09  Jason Merrill  <jason@redhat.com>

        Missing bits from N4268, constant evaluation for all non-type args.
        * call.c (build_converted_constant_expr): Rename from
        build_integral_nontype_arg_conv, handle all types.
        * pt.c (convert_nontype_argument): In C++17 call it for all types.
        Move NOP stripping inside pointer case, don't strip ADDR_EXPR.
        * cvt.c (strip_fnptr_conv): Also strip conversions to the same type.

        Overhaul pointer-to-member conversion and template argument handling.
        * call.c (standard_conversion): Avoid creating ck_pmem when the
        class type is the same.
        * cvt.c (can_convert_qual): Split from
        perform_qualification_conversions.
        * constexpr.c (cxx_eval_constant_expression): Check it.
        * typeck.c (convert_ptrmem): Only cplus_expand_constant if
        adjustment is necessary.
        * pt.c (check_valid_ptrmem_cst_expr): Compare class types.
        (convert_nontype_argument): Avoid redundant error.

        * call.c (convert_like_real): Remove "inner" parameter.
        Don't replace a constant with its value.
        * cp-gimplify.c (cp_fully_fold): Use cp_fold_rvalue.

        * pt.c (convert_nontype_argument): Check NULLPTR_TYPE_P rather than
        nullptr_node.

        * parser.c (cp_parser_constant_expression): Check
        potential_rvalue_constant_expression after decay_conversion.
        * pt.c (convert_nontype_argument): Don't require linkage in C++17.

        PR c++/80384 - ICE with dependent noexcept-specifier
        * pt.c (dependent_type_p_r) [FUNCTION_TYPE]: Check for dependent
        noexcept-specifier.

        * constexpr.c (potential_constant_expression_1): Allow 'this' capture.

2017-06-09  Jan Hubicka  <hubicka@ucw.cz>

        * class.c (build_vtbl_initializer): Mark dvirt_fn as cold.
        * decl.c (cxx_init_decl_processing, push_throw_library_fn): Likewise.
        (excpet.c): Mark terminate as cold.

2017-06-08  Jakub Jelinek  <jakub@redhat.com>

        PR c/81006
        * semantics.c (handle_omp_array_sections_1): Convert TYPE_MAX_VALUE
        to sizetype before size_binop.

        PR c++/81011
        * cp-gimplify.c (cxx_omp_finish_clause): When changing clause
        to OMP_CLAUSE_SHARED, also clear OMP_CLAUSE_SHARED_FIRSTPRIVATE
        and OMP_CLAUSE_SHARED_READONLY flags.

2017-06-08  Jan Hubicka  <hubicka@ucw.cz>

        * cp-tree.h (lang_check_failed): Annotate by ATTRIBUTE_COLD.

2017-06-07  Nathan Sidwell  <nathan@acm.org>

        * class.c (layout_class_type): Restructure overlong-bitfield tpe
        search.

2017-06-07  Jonathan Wakely  <jwakely@redhat.com>

        PR c++/80990
        * pt.c (do_class_deduction): Build qualified type.

2017-06-06  Nathan Sidwell  <nathan@acm.org>

        * name-lookup.c (suggest_alternatives_for): Use qualified lookup
        sans using directives.  Don't walk into inline namespaces.

        PR c++/80979
        * name-lookup.c (adl_class_only): Don't add visible friends.

2017-06-05  Volker Reichelt  <v.reichelt@netcologne.de>

        * parser.c (cp_parser_base_specifier): Fix typos in error messages.

2017-06-02  Nathan Sidwell  <nathan@acm.org>

        Remove lang_type_ptrmem.
        * cp-tree.h (lang_type_header): Remove is_lang_type_class. Move
        into ...
        (lang_type_class): ... this.  Reorder bitfields.  Rename to ...
        (lang_type): ... this.  Delete old definition.
        (lang_type_ptrmem): Delete.
        (LANG_TYPE_CLASS_CHECK): Simply get TYPE_LANG_SPECIFIC.  Adjust uses.
        (LANG_TYPE_PTRMEM_CHECK): Delete.
        (TYPE_GET_PTRMEMFUNC_TYPE, TYPE_SET_PTRMEMFUNC_TYPE): Delete.
        (TYPE_PTRMEMFUNC_TYPE): New.  Use TYPE_LANG_SLOT_1.
        * decl.c (build_ptrmemfunc_type): Adjust.
        * lex.c (copy_lang_type): Remove lang_type_ptrmem handling.
        (maybe_add_lang_type_raw): Don't set u.c.h.is_lang_type_class.
        
        * class.c (check_bases_and_members): Adjust vec_new_uses_cookie
        setting.
        
        Remove cp_binding_level::namespaces
        * name-lookup.h (cp_binding_level): Lose namespaces field.
        * name-lookup.c (add_decl_to_level): Chain namespaces on the names
        list.
        (suggest_alternatives_for): Adjust for namespace list.  Do
        breadth-first search.
        * decl2.c (collect_source_refs): Namespaces are on the regulr
        list.
        (collect_ada_namespace): Likewise.

2017-06-02  Bernd Edlinger  <bernd.edlinger@hotmail.de>

        * typeck.c (cp_build_binary_op): Implement the -Wsizeof_pointer_div
        warning.

2017-06-01  Ville Voutilainen  <ville.voutilainen@gmail.com>

        PR c++/80812
        * method.c (constructible_expr): Strip array types before calling
        build_value_init.

2017-06-01  Paolo Carlini  <paolo.carlini@oracle.com>

        PR c++/80896
        * cvt.c (convert_to_void): Possibly call maybe_warn_nodiscard
        for case INDIRECT_REF too in the main switch.

2017-05-31  Jason Merrill  <jason@redhat.com>

        PR c++/80840 - ICE with constexpr and reference
        * pt.c (convert_nontype_argument): Don't test whether a decl is
        value-dependent when binding to a reference.

2017-05-31  Nathan Sidwell  <nathan@acm.org>

        * cp-tree.h (lang_decl_slector): New enum.
        (lang_decl_base): Make selector an enum.  Drop decomposition_p
        field.
        (lang_decl): Use enum for discrimination.
        (LANG_DECL_FN_CHECK, LANG_DECL_NS_CHECK, LANG_DECL_PARM_CHECK,
        LANG_DECL_DEOMP_CHECK): Use enum.
        (DECL_DECOMPOSITION_P): Use selector value.
        (SET_DECL_DECOMPOSITION_P): Delete.
        (retrofit_lang_decl): Lose SEL parm.
        (fit_decomposition_lang_decl): Declare.
        * decl.c (cp_finish_decomp, grokdeclarator): Use
        fit_decomposition_lang_decl.
        * lex.c (maybe_add_lang_decl_raw): New. Broken out of
        retrofit_lang_decl.
        (set_decl_linkage): New.  Broken out of retrofit_lang_decl.  Use enum.
        (fit_decomposition_lang_decl): Likewise.
        (retrofit_lang_decl): Use worker functions.
        (cxx_dup_lang_specific_decl): Use selector enum.
        (maybe_add_lang_type_raw): New.  Broken out of ...
        (cxx_make_type_name): ... here.  Call it.

2017-05-30  Jason Merrill  <jason@redhat.com>

        PR c++/80856 - ICE with local extern in template
        * semantics.c (finish_call_expr): Replace a local extern overload
        set in a template with the IDENTIFIER_NODE.

2017-05-30  David Malcolm  <dmalcolm@redhat.com>

        * call.c (perform_implicit_conversion_flags): Convert
        "from %qT to %qT" to "from %qH to %qI" in diagnostic.
        (print_conversion_rejection): Replace pairs of %qT with
        %qH and %qI in various places.
        (build_user_type_conversion_1): Likewise.
        (build_integral_nontype_arg_conv): Likewise.
        (build_conditional_expr_1): Likewise.
        (convert_like_real): Likewise.
        (convert_arg_to_ellipsis): Likewise.
        (joust): Likewise.
        (initialize_reference): Likewise.
        * cvt.c (cp_convert_to_pointer): Likewise.
        (cp_convert_to_pointer): Likewise.
        (convert_to_reference): Likewise.
        (ocp_convert): Likewise.
        * error.c (cp_printer): Gain bool and const char ** parameters.
        (struct deferred_printed_type): New struct.
        (class cxx_format_postprocessor): New class.
        (cxx_initialize_diagnostics): Wire up a cxx_format_postprocessor
        to pp->m_format_postprocessor.
        (comparable_template_types_p): New function.
        (newline_and_indent): New function.
        (arg_to_string): New function.
        (print_nonequal_arg): New function.
        (print_template_differences): New function.
        (type_to_string_with_compare): New function.
        (print_template_tree_comparison): New function.
        (append_formatted_chunk): New function.
        (add_quotes): New function.
        (cxx_format_postprocessor::handle): New function.
        (defer_phase_2_of_type_diff): New function.
        (cp_printer): Add "quoted" and "buffer_ptr" params.  Implement
        %H and %I.
        * typeck.c (cp_build_binary_op): Replace pairs of %qT with
        %qH and %qI in various places.
        (convert_member_func_to_ptr): Likewise.
        (build_reinterpret_cast_1): Likewise.
        (convert_for_assignment): Likewise.
        * typeck2.c (check_narrowing): Likewise.

2017-05-30  Nathan Sidwell  <nathan@acm.org>

        Kill IDENTIFIER_NAMESPACE_BINDINGS
        * cp-tree.h (lang_identifier): Delete namespace_bindings.
        (IDENTIFIER_NAMESPACE_BINDINGS): Delete.
        (lang_decl_ns): Add bindings.
        (DECL_NAMESPACE_BINDINGS): New.
        * lex.c (retrofit_lang_decl): Create namespace hash table.
        * name-lookup.c (find_namespace_slot): Change to use hash-map.
        * ptree.c (cxx_print_binding): Delete.
        (cxx_print_identifier): Remove NAMESPACE_BINDING printing.

        * cp-tree.def (OVERLOAD): Fix comment.
        * cp-tree.h: Fix comments and whitespace.
        * error.c (dump_decl): Use pp_cxx_colon_colon, ovl_scope.
        * name-lookup.c (add_decl_to_level): Assert not class.
        (check_local_shadow): Use OVL_P.
        (pushdecl_with_scope_1): Rename to ...
        (do_pushdecl_with_Scope): ... here.
        (do_nonmember_using_decl): Use qualified_namespace_lookup return
        value.
        (push_class_level_binding_1): Use OVL_P.
        (pushdecl_namespace_level): Use do_pushdecl_with_scope.
        (pushtag_1): Rename to ...
        (do_pushtag): ... here.  Adjust do_pushdecl_with_scope call.
        (pushtag): Adjust.
        (store_class_bindings): Do not time here.
        * name-lookup.h (pushdecl_outermost_localscope): Reorder.
        * pt.c (listify): Declare argvec at point of initialization.

        PR c++/80913
        * name-lookup.c (add_decl_to_level): Assert not making a circular
        chain.
        (update_binding): Don't prematurely slide artificial decl.

2017-05-29  Alexandre Oliva <aoliva@redhat.com>

        * cp-tree.h (lang_identifier): Drop oracle_looked_up, unused.

2017-05-29  Nathan Sidwell  <nathan@acm.org>

        PR c++/80891 (#1,#5)
        * cp-tree.h (lookup_maybe_add): Add DEDUPING argument.
        * name-lookup.c (name_lookup): Add deduping field.
        (name_lookup::preserve_state, name_lookup::restore_state): Deal
        with deduping.
        (name_lookup::add_overload): New.
        (name_lookup::add_value, name_lookup::add_fns): Call add_overload.
        (name_lookup::search_adl): Set deduping.  Don't unmark here.
        * pt.c (most_specialized_instantiation): Revert previous change,
        Assert not given duplicates.
        * tree.c (lookup_mark): Just mark the underlying decls.
        (lookup_maybe_add): Dedup using marked decls.

        PR c++/80891 (#4)
        * ptree.c (cxx_print_xnode): Show internal OVERLOAD structure.
        * tree.c (ovl_insert, ovl_iterator_remove_node): Fix copying assert.

        Stat hack representation
        * name-lookup.c (STAT_HACK_P, STAT_TYPE, STAT_DECL,
        MAYBE_STAT_DECL, MAYBE_STAT_TYPE): New.
        (stat_hack): New.
        (find_namespace_binding): Replace with ...
        (find_namespace_slot): ... this.
        (find_namespace_value): New.
        (name_lookup::search_namespace_only,
        name_lookup::adl_namespace_only): Adjust.
        (update_binding): Add SLOT parameter, adjust.
        (check_local_shadow): Use find_namespace_value.
        (set_local_extern_decl_linkage): Likewise.
        (do_pushdecl): Adjust for namespace slot.
        (push_local_binding): Assert not a namespace binding.
        (check_for_out_of_scope_variable): Use find_namespace_value.
        (set_identifier_type_value_with_scope): Likewise.
        (get_namespace_binding): Likewise.
        (set_namespace_binding): Delete.
        (set_global_binding): Directly update the binding.
        (finish_namespace_using_decl): Likewise.
        (lookup_type_scope_1): Use find_namespace_slot and update.
        (do_push_nested_namespace): Use find_namespace_value.

        PR c++/80891 (#1)
        * pt.c (most_specialized_instantiation): Cope with duplicate
        instantiations.

        PR c++/80891 (#3)
        * cp-tree.h (build_min_nt_call_vec): Declare.
        * decl.c (build_offset_ref_call_from_tree): Call it.
        * parser.c (cp_parser_postfix_expression): Likewise.
        * pt.c (tsubst_copy_and_build): Likewise.
        * semantics.c (finish_call_expr): Likewise.
        * tree.c (build_min_nt_loc): Keep unresolved lookups.
        (build_min): Likewise.
        (build_min_non_dep): Likewise.
        (build_min_non_dep_call_vec): Likewise.
        (build_min_nt_call_vec): New.

        PR c++/80891 (#2)
        * tree.c (ovl_copy): Adjust assert, copy OVL_LOOKUP.
        (ovl_used): New.
        (lookup_keep): Call it.

2017-05-26  Nathan Sidwell  <nathan@acm.org>

        Implement DR2061
        * name-lookup.c (push_inline_namespaces): New.
        (push_namespace): Look inside inline namespaces.

        Inline and using namespace representation change.
        * cp-tree.h (struct lang_decl_ns): Delete ns_using.  Add usings,
        inlinees as vector.
        (DECL_NAMESPACE_USING): Adjust.
        (DECL_NAMESPACE_INLINEES): New.
        * name-lookup.h (struct cp_binding_level): Change usings
        representation.
        * name-lookup.c (name_lookup::do_queue_usings,
        name_lookup::queue_usings): Adjust.
        (name_lookup::search_namespace, name_lookup::search_usings,
        name_lookup::queue_namespace): Adjust.
        (name_lookup::adl_namespace_only): Adjust.
        (add_using_namespace, push_namespace): Push onto vector.
        (pop_namespace): Add timing logic.

        * call.c (build_operator_new_call): Do namelookup and ADL here.
        (build_new_op_1): Likewise.
        * name-lookup.h (lookup_function_nonclass): Delete declaration.
        (do_using_directive): Likewise.
        * name-lookup.c (set_namespace_binding, push_local_binding): Don't
        declare early.
        (struct scope_binding): Delete.
        (EMPTY_SCOPE_BINDING): Delete.
        (set_decl_namespace): Use OVL_P.
        (finish_local_using_decl): Lose unnecesary checks.
        (lookup_function_nonclass): Delete.
        (cp_emit_debug_info_for_using): Use MAYBE_BASELINK_P.

        * cp-tree.h (OVL_CHAIN): Check looking at OVERLOAD.
        (ovl_iterator): Add allow_inner field.  Adjust ctor.  Make
        unduplicatable.
        (ovl_iterator::maybe_push, ovl_iterator::pop): New.
        (lkp_iterator): Add outer field.  Adjust ctor.
        (lkp_iterator::operator++): New.
        (lookup_mark, lookup_maybe_add): Declare.
        * name-lookup.c (name_lookup): Delete fn_set member.
        (name_lookup::preserve_state, name_lookup::restore_state): Unmark
        and mark lookup.
        (name_lookup::add_value): Use lookup_add directly.
        (name_lookup::add_fns: Use lookup_maybe_add.
        (name_lookup::search_adl): Mark and unmark fns.
        (pushdecl): Adjust.
        * pt.c (check_explicit_specialization): Use lookup_add directly.
        * ptree.c (cxx_print_xnode): Show complete overload structure.
        * tree.c (lookup_mark, lookup_maybe_add): New.

        * name-lookup.c (name_lookup::search_adl): ADL OMP UDR type args.

2017-05-26  Jakub Jelinek  <jakub@redhat.com>

        * cp-tree.h (struct lang_decl_decomp): New type.
        (struct lang_decl): Add u.decomp.
        (LANG_DECL_DECOMP_CHECK): Define.
        (DECL_DECOMPOSITION_P): Note it is set also on the vars
        for user identifiers.
        (DECL_DECOMP_BASE): Define.
        (retrofit_lang_decl): Add extra int = 0 argument.
        * lex.c (retrofit_lang_decl): Add SEL argument, if non-zero
        use it to influence the selector choices and for selector
        0 to non-zero transition copy old content.
        (cxx_dup_lang_specific_decl): Handle DECL_DECOMPOSITION_P.
        * decl.c (poplevel): For DECL_DECOMPOSITION_P, check
        !DECL_DECOMP_BASE instead of !DECL_VALUE_EXPR.  Adjust warning
        wording if decl is a structured binding.
        (cp_finish_decomp): Pass 4 as the new argument to retrofit_lang_decl.
        Set DECL_DECOMP_BASE.  Ignore DECL_READ_P sets from initialization
        of individual variables for tuple structured bindings.
        (grokdeclarator): Pass 4 as the new argument to retrofit_lang_decl.
        Clear DECL_DECOMP_BASE.
        * decl2.c (mark_used): Mark DECL_DECOMP_BASE TREE_USED as well.
        * pt.c (tsubst_decomp_names): Assert DECL_DECOMP_BASE matches what
        is expected.
        * expr.c (mark_exp_read): Recurse on DECL_DECOMP_BASE instead of
        DECL_VALUE_EXPR.

2017-05-25  Jason Merrill  <jason@redhat.com>

        PR c++/80605 - __is_standard_layout and zero-length array
        * class.c (check_bases): Use DECL_FIELD_IS_BASE.

2017-05-25  Nathan Sidwell  <nathan@acm.org>

        Kill OVL_CURRENT, OVL_NEXT.
        * cp-tree.h (OVL_CURRENT, OVL_NEXT): Delete.
        * name-lookup.c (set_decl_namespace): Use ovl_iterator.
        (consider_binding_level): Use OVL_FIRST.
        (cp_emit_debug_info_for_using): Use lkp_iterator.
        * pt.c (check_explicit_specialization): Use ovl_iterator.       

        Kill DECL_NAMESPACE_USERS, DECL_NAMESPACE_ASSOCIATIONS.
        * cp-tree.h (lang_decl_ns): Remove ns_users field.
        (DECL_NAMESPACE_USERS, DECL_NAMESPACE_ASSOCIATIONS): Delete.
        (TREE_INDIRECT_USING): Delete.
        * name-lookup.h (is_associated_namespace): Delete.
        * name-lookup.c (name_lookup::search_usings,
        name_lookup::do_queue_usings): Usings are always direct.
        (is_associated_namespace): Delete.
        (handle_namespace_attrs): Use DECL_NAMESPACE_INLINE_P.
        (namespace_ancestor_1, namespace_ancestor): Delete.
        (push_using_directive_1, push_using_directive): Delete.
        (add_using_namespace_1): Delete.
        (add_using_namespace): Reimplement.
        (emit_debug_info_using_namespace): New.
        (finish_namespace_using_directive, finish_local_using_directive,
        push_namespace): Adjust.
        * tree.c (cp_free_lang_data): Remove DECL_NAMESPACE_USERS handling.

2017-05-25  Volker Reichelt  <v.reichelt@netcologne.de>

        * semantics.c (finish_handler_parms): Warn about non-reference type
        catch handlers.

2017-05-25  Nathan Sidwell  <nathan@acm.org>

        Reimplement unqualified namespace lookup.
        * name-lookup.c (name_lookup::using_pair,
        name_lookup::using_queue): New typedefs.
        (name_lookup::queue_namespace, name_lookup::do_queue_usings,
        name_lookup::queue_usings): New.
        (name_lookup::search_unqualified): New.
        (merge_functions, same_entity_p, ambiguous_decl,
        unqualified_namespace_lookup_1, unqualified_namespace_lookup,
        lookup_using_namespace): Delete.
        (lookup_name_real_1): Adjust.

        Reimplement qualified namespace lookup.
        * name-lookup.c (name_lookup::flags): New member.  Adjust ctor.
        (name_lookup::ambiguous, name_lookup::add_value,
        name_lookup::add_type, name_lookup::process_binding): New.
        (name_lookup::search_namespace_only,
        name_lookup::search_namespace, name_lookup::search_usings): New.
        (name_lookup::search_qualified): New.
        (do_nonmember_using_decl, suggest_alternatives_for,
        lookup_qualified_name): Adjust.
        (tree_vec_contains): Delete.
        (qualified_lookup_using_namespace): Rename to ...
        (qualified_namespace_lookup): ... here.  Reimplement.

        Reimplement ADL.
        * cp-tree.h (LOOKUP_SEEN_P, LOOKUP_FOUND_P): New.
        * name-lookup.h (lookup_arg_dependent): Return plain tree.
        * name-lookup.c (arg_lookup, arg_assoc, arg_assoc_args,
        arg_assoc_args_vec, arg_assoc_type, add_function,
        arg_assoc_namespace, arg_assoc_class_only, arg_assoc_bases,
        arg_assoc_class, arg_assoc_template_arg, arg_assoc,
        lookup_arg_dependent_1): Delete.
        (name_lookup): New lookup object.
        (name_lookup::preserve_state, name_lookup::restore_state,
        name_lookup::mark_seen, name_lookup::find_and_mark,
        name_lookup::add_fns, name_lookup::adl_namespace_only,
        name_lookup::adl_namespace, name_lookup::adl_class_only,
        name_lookup::adl_bases, name_lookup::adl_class,
        name_lookup::adl_expr, name_lookup::adl_type,
        name_lookup::adl_template_arg, name_lookup::search_adl): New.
        (lookup_arg_dependent): Return a plain tree.  Adjust.
        (is_associated_namespace): Move later.
        
2017-05-24  Nathan Sidwell  <nathan@acm.org>

        * friend.c (do_friend): Remove check for existing decl.
        * name-lookup.h (lookup_name_innermost_nonclass_level): Delete.
        * name-lookup.c (push_local_binding): Directly look for binding.
        (lookup_name_innermost_nonclass_level_1): Delete.
        (lookup_name_innermost_nonclass_level): Delete.

        * Make-lang.in (CXX_AND_OBJCXX_OBJS): Alphabetize.

        * cp-tree.h (cp_free_lang_data): Add extern.
        (ovl_skip_hidden, is_overloaded_fn, really_overloaded_fn): Add
        ATTRIBUTE_PURE.
        (type_unknown_p): Return bool, make inline, lose TREE_LIST check.
        * typeck.c (type_unknown_p): Delete.
        * tree.c (is_overloaded_fn): Use MAYBE_BASELINE_FUNCTIONS, adjust
        overload management.
        (dependent_name): Likewise.
        (decl_anon_ns_mem_p): Simplify.

2017-05-24  Jonathan Wakely  <jwakely@redhat.com>

        PR c++/80544
        * tree.c (reshape_init): Use unqualified type for direct enum init.
        * typeck.c (maybe_warn_about_cast_ignoring_quals): New.
        (build_static_cast_1, build_reinterpret_cast_1): Strip cv-quals from
        non-class destination types.
        (build_const_cast_1): Strip cv-quals from destination types.
        (build_static_cast, build_reinterpret_cast, build_const_cast)
        (cp_build_c_cast): Add calls to maybe_warn_about_cast_ignoring_quals.

2017-05-24  Martin Sebor  <msebor@redhat.com>

        PR c/80731
        * call.c (fully_fold_internal): Adjust.

2017-05-24  Nathan Sidwell  <nathan@acm.org>

        * cp-tree.h (ovl_skip_hidden): Declare.
        * tree.c (ovl_skip_hidden): New.
        * name-lookup.c (arg_assoc_namespace): Call ovl_skip_hidden.
        (lookup_arg_dependent_1): Likewise.
        (ambiguous_decl): Use DECL_HIDDEN_P, ovl_skip_hidden.
        (hidden_name_p, remove_hidden_names): Delete.
        (lookup_name_real_1): Do not strip hidden names.
        * name-lookup.h (hidden_name_p, remove_hidden_names): Delete.

        * cp-tree.h (OVL_HIDDEN_P): New.
        (ovl_iterator::hidden_p, ovl_iterator::reveal_node): New.
        (ovl_iterator::reveal_node): Declare.
        * tree.c (ovl_copy): Copy OVL_HIDDEN_P.
        (ovl_insert): Order on hiddenness.
        (ovl_iterator::reveal_node): New.
        * name-lookup.c (anticipated_builtin_p): New.
        (supplement_binding_1): Use it.
        (set_local_extern_decl_linkage): Use hidden_p.
        (do_pushdecl): Deal with unhiding a hidden decl, use
        anticipated_builtin_p.
        (do_nonmember_using_decl): Use anticipated_decl_p.
        (lookup_name_real_1): Use DECL_HIDDEN_P.

2017-05-23  Jason Merrill  <jason@redhat.com>

        -Wunused and C++17 structured bindings
        * decl.c (poplevel): Don't warn about unused structured bindings,
        only real variables.
        * error.c (dump_simple_decl): Handle structured bindings.
        * expr.c (mark_exp_read): Look through DECL_VALUE_EXPR.

2017-05-23  Nathan Sidwell  <nathan@acm.org>

        * cp-tree.h (PUSH_GLOBAL, PUSH_LOCAL, PUSH_USING): Delete.
        * name-lookup.c (create_local_binding): New.
        (update_binding): New.
        (pushdecl_maybe_friend_1): Rename to ...
        (do_pushdecl): ... this.  Reimplement.
        (pushdecl): Adjust.
        (push_overloaded_decl_1, push_overloaded_decl): Delete.

2017-05-23  Jason Merrill  <jason@redhat.com>

        PR c++/80396 - built-in for make_integer_sequence.
        * pt.c (builtin_pack_fn_p, builtin_pack_call_p)
        (expand_integer_pack, expand_builtin_pack_call): New.
        (find_parameter_packs_r): Check builtin_pack_call_p.
        (check_for_bare_parameter_packs): Handle it.
        (tsubst_pack_expansion): Call expand_builtin_pack_call.
        (declare_integer_pack): New.
        (init_template_processing): Call it.
        * decl2.c (mark_used): Check builtin_pack_fn_p.

2017-05-23  Nathan Sidwell  <nathan@acm.org>

        * name-lookup.c (find_namespace_binding): New.
        (pushdecl_maybe_friend_1): Use CP_DECL_CONTEXT.
        (set_identifier_type_value_with_scope): Use find_namespace_binding.
        (find_binding, cp_binding_level_find_binding_for_name,
        binding_for_name, namespace_binding_1): Delete.
        (push_overloaded_decl_1): Use CP_DECL_CONTEXT.
        (get_namespace_binding, set_namespace_binding,
        finish_namespace_using_decl, unqualified_namespace_lookup_1,
        qualified_lookup_using_namespace, lookup_type_scope_1,
        lookup_name_innermost_nonclass_level_1): Use find_namespace_binding.

        PR c++/80866
        * parser.c (cp_parser_template_id): Keep the lookup when stashing
        the template_id.

        * cp-tree.h (DECL_HIDDEN_P): New.
        * name-lookup.c (set_decl_context,
        set_local_extern_decl_linkage): New, broken out of ...
        (pushdecl_maybe_friend_1): ... here.  Call them.

2017-05-23  Thomas Schwinge  <thomas@codesourcery.com>

        * parser.c (OACC_KERNELS_CLAUSE_MASK): Add
        "PRAGMA_OACC_CLAUSE_NUM_GANGS", "PRAGMA_OACC_CLAUSE_NUM_WORKERS",
        "VECTOR_LENGTH".

2017-05-23  Nathan Sidwell  <nathan@acm.org>

        * cp-tree.h (OVL_P): New.
        * name-lookup.h (push_local_binding): Delete.
        (do_toplevel_using_decl, do_local_using_decl): Rename to ...
        (finish_namespace_using_decl, finish_local_using_decl): ... here
        * name-lookup.c (add_decl_to_level): Swap args.
        (pop_bindings_and_leave_scope): Look inside TREE_LIST.
        (diagnose_name_conflict): Check contexts are same for redecl.
        (update_local_overload): New.
        (compparms_for_decl_and_using): Rename to ...
        (matching_fn_p): ... here.
        (pushdecl_maybe_friend_1): Adjust add_decl_to_level,
        push_local_bindings call.
        (push_local_binding): Make static, replace FLAGS arg with
        IS_USING.
        (validate_nonmember_using_decl): Use OVL_FIRST.
        (do_nonmember_using_decl): Use in/out parameters.  Use
        lkp_iterator and simplify.
        (do_toplevel_using_decl, do_local_using_decl): Rename to ...
        (finish_namespace_using_decl, finish_local_using_decl): ... here.
        Adjust.
        (lookup_type_current_level): Delete.
        * parser.c (cp_parser_using_declaration): Adjust.
        * pt.c (tsubst_expr): Adjust.

2017-05-22  Nathan Sidwell  <nathan@acm.org>

        * name-lookup.h (parse_using_directive): Replace with ...
        (finish_namespace_using_directive): ... this and ...
        (finish_local_using_directive): ... this.
        * name-lookup.c (add_using_namespace_1): Move later.
        (add_using_namespace): Move later, add namespace_p arg, remove
        indirect arg.
        (push_using_directive_1): Directly recurse.
        (do_using_directive, parse_using_directive): Delete, split into ...
        (finish_namespace_using_directive): ... this and ...
        (finish_local_using_directive): ... this.
        (push_namespace): Use add_using_namespace.
        * parser.c (cp_parser_using_directive): Call
        finish_namespace_using_directive or finish_local_using_directive.
        * pt.c (tsubst_expr): Call finish_local_using_directive.

        * cp-objcp-common.c (cp_register_dumps): Register raw dumper.
        * cp-tree.h (raw_dump_id): Declare.
        * decl2.c (raw_dump_id): Define.
        (dump_tu): Use raw_dump_id.

        * config-lang.in (gtfiles): Sort list, break lines.

        * cp-tree.h (CPTI_TERMINATE, CPTI_CALL_UNEXPECTED): Rename to ...
        (CPTI_TERMINATE_FN, CPTI_CALL_UNEXPECTED_FN): ... here.
        ( CPTI_GET_EXCEPTION_PTR_FN, CPTI_BEGIN_CATCH_FN, CPTI_END_CATCH_FN,
        CPTI_ALLOCATE_EXCEPTION_FN, CPTI_FREE_EXCEPTION_FN, CPTI_THROW_FN,
        CPTI_RETHROW_FN): New.
        (noexcept_deferred_spec): New.
        (terminate_node, call_unexpected_node): Rename to ...
        (terminate_fn, call_unexpected_fn): ... here.
        (get_exception_ptr_fn, begin_catch_fn, end_catch_fn,
        allocate_exception_fn, free_exception_fn, throw_fn, rethrow_fn): New.
        * except.c (fn1..fn5, throw_fn, rethrow_rn, spec): Delete.
        (init_exception_processing): Adjust.
        (declare_library_fn): Create and push the fns here.
        (do_get_exception_ptr, do_begin_catch, do_end_catch,
        do_allocate_exception_ptr, do_free_exception_ptr): Adjust
        declare_library_fn use.
        (unevaluated_noexcept_spec): Adjust.
        * cp-gimplify.c (genericize_eh_spec_block,
        gimplify_most_not_throw_expr): Adjust.

        * name-lookup.c (pushdecl_top_level,
        pushdecl_top_level_and_finish): Move after namespace pushing and
        popping functions.
        (push_to_top_level): Rename to ...
        (do_push_to_top_level): ... here.  Remove timing code.
        (pop_from_top_level_1): Rename to ...
        (do_pop_from_top_level): ... here.
        (do_push_nested_namespace, do_pop_nested_namespace)
        (push_to_top_level): New wrapper for do_push_to_top_level.
        (pop_from_top_level): Adjust.
        (push_nested_namepace, pop_nested_namespace): Wrappers for workers.

2017-05-19  Bernd Edlinger  <bernd.edlinger@hotmail.de>

        * config-lang.in (gtfiles): Add c-family/c-format.c,
        except.c, init.c, lambda.c and friend.c.
        * class.c (dvirt_fn): Move out of function scope,
        add GTY attribute.
        * except.c (fn1-5, throw_fn, rethrow_fn, spec): Likewise.
        * init.c (fn): Likewise.
        * lambda.c (ptr_id, max_id): Likewise.
        * friend.c (global_friend): Add GTY attribute.

2017-05-19  Nathan Sidwell  <nathan@acm.org>

        * call.c (add_list_candidates): Use OVL_FIRST.
        (build_new_method_call_1): Likewise.
        * cp-tree.h (OVL_SINGLE_P): New.
        (TYPE_HIDDEN_P): New.
        * decl.c (xref_tag_1): Use TYPE_HIDDEN_P.
        * dump.c (cp_tump_tree): Adjust overload dumping.
        * error.c (dump_decl): Use OVL_SINGLE_P, simplify context
        printing.
        * method.c (lazily_declare_fn): Assert we added it.
        * parser.c (cp_parser_nested_name_specifier): Use OVL_SINGLE_P,
        OVL_FIRST.
        (cp_parser_template_name): Use lkp_iterator.
        * pt.c (begin_template_parm_list): Fixup comment.
        (instantiate_class_template_1): Use TYPE_HIDDEN_P.
        * tree.c (ovl_iterator::remove_node): Cope with inherited ctors.
        (ovl_scope): Use lkp_iterator.

2017-05-19  Thomas Schwinge  <thomas@codesourcery.com>

        * parser.c (cp_parser_omp_clause_default): Handle
        "OMP_CLAUSE_DEFAULT_PRESENT".

        * parser.c (cp_parser_omp_clause_default): Avoid printing more
        than one syntax error message.

2017-05-19  Nathan Sidwell  <nathan@acm.org>

        * class.c (class_dump_id): Define.
        (dump_class_hierarchy, dump_vtable, dump_vtt): Use it.
        * cp-objcp-common.c (cp_register_dumps): New.
        * cp-objcp-common.h (cp_register_dumps): Declare.
        (LANG_HOOKS_REGISTER_DUMPS): Override.
        * cp-tree.h (class_dump_id): Declare.

2017-05-18  Nathan Sidwell  <nathan@acm.org>

        * cp-tree.h (OVL_ARG_DEPENDENT): Delete.
        (OVL_USED_P): New.
        (lookup_keep): Declare.
        * name-lookup.c (add_function): Don't set OVL_ARG_DEPENDENT.
        * pt.c (tsubst_copy): Assert lookup is persistent.
        * semantics.c (finish_call_expr): Use lkp_iterator, call
        lookup_keep.
        * tree.c (ovl_copy): New.
        (ovl_insert, ovl_iterator::remove_node): Copy immutable nodes.
        (lookup_keep): New.

        * cp-tree.h (OVL_USED): Replace with ...
        (OVL_USING_P): ... this.
        (ovl_iterator::using_p): Adjust.
        * name-lookup.c (push_overloaded_decl_1,
        do_nonmember_using_decl): Adjust.
        * search.c (lookup_field_r): Adjust.
        * tree.c (ovl_insert, ovl_scope): Adjust.

        * cp-tree.h (lookup_add): Swap args.
        (ovl_cons, build_overload): Delete.
        * name-lookup.c (add_function, push_overloaded_decl_1,
        do_nonmember_using_decl, merge_functions, remove_hidden_names):
        Use lookup_add, ovl_insert.
        * pt.c (check_explicit_specialization): Use lookup_add.
        (do_class_deduction): Likewise. Refactor if.
        * tree.c (lookup_add): Swap args.
        (ovl_cons, build_overload): Delete.

        * name-lookup.c (find_local_binding): New, broken out of ...
        (lookup_name_innermost_nonclass_level_1): ... here.  Call it.
        (set_namespace_binding): Swap scope & name args.
        (namespace_binding_1): Likewise.
        (pushdecl_maybe_friend_1): Adjust set_namespace_binding call.
        (push_overloaded_decl_1): Likewise.
        (set_global_binding): Likewise.
        (get_namespace_binding): Adjust namespace_binding_1 call.

2017-05-17  Nathan Sidwell  <nathan@acm.org>

        * cp-tree.h (default_hash_traits <lang_identifier *>): New
        specialization.
        * name-lookup.c (lookup_extern_c_fun_in_all_ns): Delete.
        (extern_c_fns): New hash table.
        (check_extern_c_conflict): New, broken out of ...
        (pushdecl_maybe_friend_1): ... here.  Call it.
        (c_linkage_bindings): Just look in hash table.

2017-05-17  Ville Voutilainen  <ville.voutilainen@gmail.com>

        PR c++/80654
        PR c++/80682
        Implement new C++ intrinsics __is_assignable and __is_constructible.
        * cp-tree.h (CPTK_IS_ASSIGNABLE, CPTK_IS_CONSTRUCTIBLE): New.
        (is_xible): New.
        * cxx-pretty-print.c (pp_cxx_trait_expression): Handle
        CPTK_IS_ASSIGNABLE and CPTK_IS_CONSTRUCTIBLE.
        * method.c (constructible_expr): Set cp_unevaluated.
        (is_xible_helper): New.
        (is_trivially_xible): Adjust.
        (is_xible): New.
        * parser.c (cp_parser_primary_expression): Handle
        RID_IS_ASSIGNABLE and RID_IS_CONSTRUCTIBLE.
        (cp_parser_trait_expr): Likewise.
        * semantics.c (trait_expr_value): Handle
        CPTK_IS_ASSIGNABLE and CPTK_IS_CONSTRUCTIBLE.

2017-05-17  Nathan Sidwell  <nathan@acm.org>

        * cp-tree.h (ovl_iterator::using_p): New predicate.
        (ovl_iterator::remove_node): New worker.
        (ovl_insert): Declare.
        * tree.c (ovl_insert): New.
        (ovl_iterator::remove_node): New.
        * class.c (add_method): Use ovl_iterator, ovl_insert.
        (clone_function_decl): Fix description.
        (clone_constructors_and_destructors): Use ovl_iterator.

        * class.c (handle_using_decl): Use OVL_FIRST, ovl_iterator.
        (maybe_warn_about_overly_private_class): Use ovl_iterator.
        (method_name_cmp, resort_method_name_cmp): Use OVL_NAME.
        (resort_type_method_vec, finish_struct_methods): Use OVL_FIRST.
        (get_base_fndecls): Use ovl_iterator.
        (warn_hidden): Use OVL_NAME, ovl_iterator.
        (add_implicitly_declared_members): Use ovl_iterator.
        * constraint.cc (normalize_template_id_expression): Use OVL_FIRST,
        flatten nested if.
        (finish_shorthand_constraint): Simplify, use ovl_make.
        * pt.c (make_constrained_auto): Simplify.  Use ovl_make.
        * search.c (shared_member_p): Use ovl_iterator.
        (lookup_field_fuzzy_info::fuzzy_lookup_fn): Use OVL_NAME.
        (lookup_conversion_operator): Use OVL_FIRST.
        (lookup_fnfiels_idx_nolazy): Use OVL_FIRST, OVL_NAME.
        (look_for_overrides_here): Use ovl_iterator.
        (lookup_conversions_r): Use OVL_FIRST, OVL_NAME, ovl_iterator.
        * typeck.c (build_x_unary_op): Use ovl_make.

2017-05-17  Martin Liska  <mliska@suse.cz>

        * class.c (dump_class_hierarchy): Introduce dump_flags_t type and
        use it instead of int type.
        (dump_vtable): Likewise.
        (dump_vtt): Likewise.
        * decl2.c (dump_tu): Likewise.

2017-05-16  David Malcolm  <dmalcolm@redhat.com>

        * call.c (enforce_access): Add access_failure_info * param and use
        it to record access failures.
        * cp-tree.h (class access_failure_info): New class.
        (enforce_access): Add access_failure_info * param, defaulting to
        NULL.
        (lookup_member): Likewise.
        (locate_field_accessor): New function decl.
        (perform_or_defer_access_check): Add access_failure_info * param,
        defaulting to NULL.
        * search.c (lookup_member): Add access_failure_info * param and
        pass it on to call to perform_or_defer_access_check.
        (matches_code_and_type_p): New function.
        (field_access_p): New function.
        (direct_accessor_p): New function.
        (reference_accessor_p): New function.
        (field_accessor_p): New function.
        (struct locate_field_data): New struct.
        (dfs_locate_field_accessor_pre): New function.
        (locate_field_accessor): New function.
        * semantics.c (perform_or_defer_access_check): Add
        access_failure_info * param, and pass it on to call to
        enforce_access.
        * typeck.c (access_failure_info::record_access_failure): New method.
        (access_failure_info::maybe_suggest_accessor): New method.
        (finish_class_member_access_expr): Pass an access_failure_info
        instance to the lookup_member call, and call its
        maybe_suggest_accessor method afterwards.

2017-05-16  Marek Polacek  <polacek@redhat.com>

        PR sanitizer/80536
        PR sanitizer/80386
        * cp-gimplify.c (cp_fold): Handle SAVE_EXPR.

2017-05-16  Nathan Sidwell  <nathan@acm.org>

        * name-lookup.c (check_local_shadow): New, broke out of ...
        (pushdecl_maybe_friend_1): ... here.  Call it.

        * cp-tree.h (OVL_NESTED_P, OVL_LOOKUP_P): New.
        (ovl_first): Move inline definition to end of file.
        (ovl_make, lookup_add): Declare.
        (get_fns, get_first_fn): Make pure.
        * tree.c (ovl_cache): New.
        (ovl_make, lookup_add): New.
        * pt.c (do_class_deduction): Don't add candidates that will be
        elided.

        * call.c (build_user_type_conversion_1): Use OVL_FIRST.
        (print_error_for_call_failure): Use OVL_NAME.
        (build_op_call_1): Use ovl_iterator.
        (add_candidates): Use OVL_FIRST & lkp_iterator.
        (build_op_delete_call): Use MAYBE_BASELINK_FUNCTIONS &
        lkp_iterator.
        * class.c (deduce_noexcept_on_destructors): Use ovl_iterator.
        (type_has_user_nondefault_constructor,
        in_class_defaulted_default_constructor,
        type_has_user_provided_constructor,
        type_has_user_provided_or_explicit_constructor,
        type_has_non_user_provided_default_constructor,
        vbase_has_user_provided_move_assign,
        type_has_move_constructor, type_has_move_assign,
        type_has_user_declared_move_constructor,
        type_has_user_declared_move_assign,
        type_build_ctor_call, type_build_dtor_call,
        type_requires_array_cookie, explain_non_literal_class): Likewise.
        (finish_struct): Use lkp_iterator.
        (resolve_address_of_overloaded_function): Use OVL_NAME, lkp_iterator.
        (note_name_declared_in_class): Use OVL_NAME.
        * cxx-pretty-print.c (pp_cxx_unqualified_id): Use OVL_FIRST.
        (pp_cxx_qualified_id, cxx_pretty_printer::id_expression,
        cxx_pretty_printer::expression): Likewise.
        * decl2.c (check_classfn): Use ovl_iterator.
        * pt.c (retrieve_specialization): Use ovl_iterator.
        * tree.c (cp_tree_equal): Use lkp_iterator.
        (type_has_nontrivial_copy_init): Use ovl_iterator.

        * typeck2.c (cxx_incomplete_type_diagnostic): Revert change and
        check is_overloaded_fn.

2017-05-16  Martin Liska  <mliska@suse.cz>

        * parser.c (cp_lexer_print_token): Add default value for flags
        argument of print_gimple_stmt, print_gimple_expr,
        print_generic_stmt and print_generic_expr.

2017-05-16  Nathan Sidwell  <nathan@acm.org>

        * cp-tree.h (class ovl_iterator, class lkp_iterator): New OVERLOAD
        iterators.
        (MAYBE_BASELINK_FUNCTIONS): New.
        * constraint.cc (resolve_constraint_check): Use lkp_iterator.
        * decl2.c (maybe_warn_sized_delete): Use ovl_iterator.
        * lambda.c (maybe_generic_this_capture): Use lkp_iterator.
        * method.c (inherited_ctor_binfo): Use ovl_iterator.
        (binfo_inherited_from): Likewise.
        * parser.c (lookup_literal_operator): Use lkp_iterator.
        * pt.c (iterative_hash_template_arg): Use lkp_iterator.
        (print_candidates_1): Likewise.
        (determine_specialization): Likewise.
        (resolve_overloaded_unification): Likewise.
        (resolve_nondeduced_context): Likewise.
        (type_dependent_expression_p): Likewise.
        (dependent_template_p): Likewise.
        * ptree.c (cxx_print_xnode): Likewise.
        * semantics.c (omp_reduction_lookup): Use lkp_iterator.
        (classtype_has_nothrow_assign_or_copy_p): Use ovl_iterator.
        * typeck.c (check_template_keyword): Use lkp_iterator.

        * cp-tree.h (OVL_FIRST, OVL_NAME): New.
        (ovl_first): New.
        * constexpr.c (function_concept_check): Use OVL_FIRST.
        * cvt.c (build_expr_type_conversion): Likewise.
        * decl.c (poplevel, grokdeclarator): Use OVL_NAME.
        * decl2.c (mark_used): Use OVL_FIRST.
        * error.c (dump_decl): Use OVL_FIRST, OVL_NAME.
        (dump_expr, location_of): Use OVL_FIRST.
        * friend.c (do_friend): Use OVL_NAME.
        * init.c (build_offset_ref): Use OVL_FIRST.
        * mangle.c (write_member_name): Likewise.
        (write_expression): Use OVL_NAME.
        * method.c (strip_inheriting_ctors): Use OVL_FIRST.
        * name-lookup.c (pushdecl_class_level): Use OVL_NAME.
        * pt.c (check_explicit_specialization): Use OVL_FIRST.
        (check_template_shadow): Likewise.
        (tsubst_template_args): Use OVL_NAME.
        (tsubst_baselink): Use OVL_FIRST.
        * semantics.c (perform_koenig_lookup): Use OVL_NAME.
        * tree.c (get_first_fn): Use OVL_FIRST.
        * typeck.c (finish_class_member_access_expr): Use OVL_NAME.
        (cp_build_addr_expr_1): Use OVL_FIRST.

        * pt.c (tsubst_copy_and_build): Remove unnecessary COMPONENT_REF
        peeking.
        * semantics.c (finish_id_expression): Directly init local var.
        (finish_omp_reduction_clause): Use really_overloaded_fn.
        * tree.c (get_fns): Document.  Assert we got an overload.
        (get_first_fn) Document.
        * typeck.c (cp_build_addr_expr_1): Pass arg directly to
        really_overloaded_fn.
        * typeck2.c (cxx_incomplete_type_diagnostic): Use get_first_fn directly.

        * cp-tree.h (SCOPE_DEPTH): New.
        * name-lookup.h (is_nested_namespace): Declare.
        * name-lookup.c (is_nested_namespace): New.
        (is_ancestor): Use it.
        (set_decl_namespace): Likewise.
        (push_namespace): Set SCOPE_DEPTH.
        * pt.c (check_specialization_namespace): Use is_nested_namespace.
        (check_unqualigied_spec_or_inst): Likewise.

2017-05-15  Nathan Sidwell  <nathan@acm.org>

        PR c++/79369
        * cp-tree.h (DECL_NAMESPACE_INLINE_P): New.
        * name-lookup.h (push_namespace): Return int, add make_inline arg.
        * name-lookup.c (push_namespace): Deal with inline directly.
        Return pushed count.
        * parser.c (cp_parser_namespace_definition): Adjust for
        push_namespace change.

2017-05-11  Nathan Sidwell  <nathan@acm.org>

        * cp-lang.c (get_global_decls, cxx_pushdecl, LANG_HOOK_GETDECLS,
        LANG_HOOKS_PUSHDECL): Move to ...
        * cp-objcp-common.c (cp_get_global_decls, cp_pushdec,
        LANG_HOOK_DECLS, LANG_HOOKS_PUSHDECL): ... here.
        * cp-objcp-common.h (cp_get_global_decls, cp_pushdecl): Declare.

        * name-lookup.h (pushdecl): Add default friend parm.
        (pushdecl_maybe_friend): Delete.
        (pushdecl_top_level): Add default friend parm.
        (pushdecl_top_level_maybe_friend): Delete.
        * name-lookup.c (pushdecl_maybe_friend): Delete.
        (pushdecl): Add is_friend parm.
        (pushdecl_top_level): Add is friend_parm.
        (pushdecl_top_level_maybe_friend, pushdecl_top_level_1): Delete.
        (pushdecl_top_level_and_finish): Do pushing and finishing directly.
        * friend.c (do_friend): Adjust.
        * pt.c (tsubst_friend_class): Adjust.

        Revert pushdecl_top_level_and_finish name change.
        * name-lookup.h (pushdecl_top_level_and_finish): Resurrect old name.
        * name-lookup.c (pushdecl_top_level_and_finish): Likewise.
        * decl.c (cp_make_fname_decl): Adjust.
        * decl2.c (get_guard, handle_tls_init):  Adjust.
        * rtti.c (get_tinfo_decl, tinfo_base_init):  Adjust.

        * name-lookup.c (pushdecl_outermost_localscope): Always
        conditionally stop timer.

        * decl.c (xref_tag_1): Don't frob ts_lambda scope here.
        * name-lookup.c (pushtag_1): Deal with ts_lambda scope.

        * cp-tree.h (pushdecl, pushdecl_maybe_friend, pushtag,
        pushtag_top_level_maybe_friend,
        pushdecl_top_level_and_finish): Move declarations to ...
        * name-lookup.h: ... here.  Group pushdecl variants.
        (pushdecl_top_level_and_finish): Rename to ...
        (pushdecl_top_level_with_init): ... here.
        * decl.c (cp_make_fname_decl): Use pushdecl_top_level_with_init.
        * decl2.c (get_guard, handle_tls_init): Likewise.
        * rtti.c (get_tinfo_decl, tinfo_base_init): Likewise.
        * lambda.c (maybe_add_lambda_conv_op): Use namespace_bindings_p.
        * method.c (implicitly_declare_fn): Likewise.
        * searchc (node_debug_info_needed): Likewise.
        * name-lookup.c (pushdecl_top_level_and_finish): Rename to ...
        (pushdecl_top_level_with_init): ... here.
        (pop_everything): Use namespace_bindings_p.

        * name-lookup.h (pop_binding): Rename to pop_local_binding.
        (getdecls): Rename to get_local_decls.
        * name-lookup.c (pop_binding): Rename to ...
        (pop_local_binding): ... here.
        (pop_bindings_and_leave_scope): Adjust.
        (getdecls): Rename to ...
        (get_local_decls): ... here.  Assert local scope.
        * decl.c (poplevel): Assert not namespace.  Adjust and simplify
        logic.
        (store_parm_decls): Adjust get_local_decls call.
        (parser.c (synthesize_implicit_template_parm): Likewise.

2017-05-11  Ville Voutilainen  <ville.voutilainen@gmail.com>

        PR c++/80682
        * method.c (is_trivially_xible): Reject void types.

2017-05-10  Nathan Sidwell  <nathan@acm.org>

        * class.c (handle_using_decl): Always use OVL_CURRENT.
        (resolve_address_of_overloaded_function): Move iterator decl into
        for scope.  Don't strip anticipated decls here.

        * pt.c (print_candidates_1): Separate TREE_LIST and OVERLOAD
        printing.
        (print_candidates): Adjust.

        * cp-tree.h (build_new_function_call): Lose koenig_p arg.  Fix
        line breaking.
        * call.c (build_new_function_call): Lose koenig_p arg.  Remove
        koenig_p handling here.
        * pt.c (push_template_decl_real): Unconditionally retrofit_lang_decl.
        (tsubst_omp_clauses): Likewise.
        (do_class_deduction): Adjust buld_new_function_call calls.
        * semantics.c (finish_call_expr): Likewise.

2017-05-10  Jason Merrill  <jason@redhat.com>

        * pt.c (unify_parameter_deduction_failure, unify_cv_qual_mismatch)
        (unify_type_mismatch, unify_parameter_pack_mismatch)
        (unify_ptrmem_cst_mismatch, unify_expression_unequal)
        (unify_parameter_pack_inconsistent, unify_inconsistency)
        (unify_vla_arg, unify_method_type_error, unify_arity)
        (unify_arg_conversion, unify_no_common_base)
        (unify_inconsistent_template_template_parameters)
        (unify_template_deduction_failure)
        (unify_template_argument_mismatch)
        (unify_overload_resolution_failure): Call unify_invalid.

        CWG 1847 - Clarifying compatibility during partial ordering
        * pt.c (more_specialized_fn): No order between two non-deducible
        parameters.

        * pt.c (dependent_type_p): Make sure we aren't called with
        global_type_node.

        PR c++/79549 - C++17 ICE with non-type auto template parameter pack
        * pt.c (convert_template_argument): Just return an argument pack.
        (coerce_template_parameter_pack, template_parm_to_arg)
        (extract_fnparm_pack, make_argument_pack, tsubst_template_args)
        (tsubst_decl, tsubst, type_unification_real, unify_pack_expansion):
        Don't set the type of a NONTYPE_ARGUMENT_PACK.
        * parser.c (make_char_string_pack, make_string_pack): Likewise.

2017-05-10  Nathan Sidwell  <nathan@acm.org>

        * cp-tree.h (add_method, clone_function_decl): Change last arg to
        bool.
        * class.c (add_method): Change third arg to bool.  Adjust.
        (one_inheriting_sig, one_inherited_ctor): Adjust.
        (clone_function_decl): Change 2nd arg to bool.  Adjust.
        (clone_constructors_and_destructors): Adjust.
        * lambda.c (maybe_add_lambda_conv_op): Adjust.
        * method.c (lazily_declare_fn): Adjust.
        * pt.c (tsubst_decl, instantiate_template_1): Adjust.
        * semantics.c (finish_member_declaration): Adjust.

2017-05-10  Paolo Carlini  <paolo.carlini@oracle.com>

        PR c++/80145
        * decl.c (finish_function): To improve error recovery, change the
        logic for calling apply_deduced_return_type.

2017-05-09  Jason Merrill  <jason@redhat.com>

        PR c++/80605 - __is_standard_layout and empty base
        * class.c (check_bases): Ignore empty bases.

        PR c++/70979 - literal class and closure types
        * class.c (finalize_literal_type_property): Handle closures
        specifically.
        (explain_non_literal_class): Likewise.

        PR c++/66297, DR 1684 - literal class and constexpr member fns
        * constexpr.c (is_valid_constexpr_fn): Only complain about
        non-literal enclosing class in C++11.
        * class.c (finalize_literal_type_property): Likewise.

2017-05-09  Paolo Carlini  <paolo.carlini@oracle.com>

        PR c++/80186
        * pt.c (tsubst_decl): Early return error_mark_node if
        grok_ctor_properties returns false.

2017-05-09  Jason Merrill  <jason@redhat.com>

        PR c++/70167 - array prvalue treated as lvalue
        * cp-tree.h (CONSTRUCTOR_C99_COMPOUND_LITERAL): New.
        (enum fcl_t): New.
        * semantics.c (finish_compound_literal): Add fcl_context parameter.
        Only make a static variable for C99 syntax.
        * parser.c (cp_parser_postfix_expression): Pass it.
        * pt.c (tsubst_copy_and_build): Likewise.
        * call.c (extend_ref_init_temps): Set
        DECL_INITIALIZED_BY_CONSTANT_EXPRESSION_P.

2017-05-09  Nathan Sidwell  <nathan@acm.org>

        * cp-lang.c (get_global_decls, cxx_pushdecl): New.
        (LANG_HOOKS_GETDECLS, LANG_HOOKS_PUSHDECL): Override.
        * name-lookup.h (pushdecl_top_level): Declare.

2017-05-08  Jason Merrill  <jason@redhat.com>

        PR c++/80178 - parameter passing for uncopyable classes
        * tree.c (type_has_nontrivial_copy_init): True for classes with only
        deleted copy/move ctors.
        (remember_deleted_copy, maybe_warn_parm_abi): New.
        * decl.c (require_complete_types_for_parms, check_function_type):
        Call maybe_warn_parm_abi.
        * call.c (convert_for_arg_passing, build_cxx_call): Likewise.

2017-05-08  Nathan Sidwell  <nathan@acm.org>

        * decl.c (builtin_function_1): Set DECL_ANTICIPATED before pushing.
        (start_preparsed_function): Do decl pushing before setting
        current_funciton_decl and announcing it.

        * name-lookup.h (pushdecl_with_scope): Replace with ...
        (pushdecl_outermost_localscope): ... this.
        * name-lookup.c (pushdecl_with_scope): Replace with ...
        (pushdecl_outermost_localscope): ... this.
        (pushdecl_namespace_level): Adjust.
        * decl.c (cp_make_fname_decl): Use pushdecl_outermost_localscope.
        * lambda.c (insert_capture_proxy): Likewise.

        * class.c (build_vtbl_initializer): Don't shadow outer variable
        with static var.

        Revert _binding -> _value change.
        * name-lookup.h (get_namespace_value, set_global_value): Rename to ...
        (get_namespace_binding, set_global_binding): ... these.
        * name-lookup.c (get_namespace_value, set_global_value): Rename to ...
        (get_namespace_binding, set_global_binding): ... these.
        (arg_assoc_namespace, pushdecl_maybe_friend_1,
        check_for_out_of_scope_variable, push_overloaded_decl_1,
        lookup_name_innermost_nonclass_level, push_namespace): Adjust.
        * cp-tree.h (IDENTIFIER_GLOBAL_VALUE,
        SET_IDENTIFIER_GLOBAL_VALUE): Adjust.
        * decl.c (poplevel): Adjust.
        * pt.c (make_constrained_auto): Likewise.

2017-05-07  Volker Reichelt  <v.reichelt@netcologne.de>

        PR translation/80280
        * call.c (print_z_candidate): Fix quoting.

2017-05-05  David Malcolm  <dmalcolm@redhat.com>

        * error.c (pedwarn_cxx98): Replace report_diagnostic
        with diagnostic_report_diagnostic.

2017-05-05  Nathan Sidwell  <nathan@acm.org>

        * cp-tree.h (IDENTIFIER_GLOBAL_VALUE): Use get_namespace_value.
        (SET_IDENTIFIER_GLOBAL_VALUE): Use set_global_value.
        (IDENTIFIER_NAMESPACE_VALUE): Delete.
        * name-lookup.h (namespace_binding, set_namespace_binding): Replace
        with ...
        (get_namespace_value, set_global_value): ... these.
        (get_global_value_if_present, is_typename_at_global_scope): Delete.
        * decl.c (poplevel): Use get_namespace_value.
        (grokdeclarator): Use IDENTIFIER_GLOBAL_VALUE.
        * class.c (build_vtbl_initializer): Stash library decl in
        static var. Use IDENTIFIER_GLOBAL_VALUE.
        * except.c (do_get_exception_ptr, do_begin_catch, do_end_catch,
        do_allocate_exception, do_free_exception, build_throw): Likewise.
        * init.c (throw_bad_array_new_length): Likewise.
        * rtti.c (throw_bad_cast, throw_bad_typeid): Likewise.
        * name-lookup.c (arg_assoc_namespace, pushdecl_maybe_friend_1,
        check_for_our_of_scope_variable, push_overloaded_decl_1): Use
        get_namespace_value.
        (set_namespace_binding_1): Rename to
        (set_namespace_binding): ... here.
        (set_global_value): New.
        (lookup_name_innermost_nonclass_level_1, push_namespace): Use
        get_namespace_value.
        * pt.c (listify): Use get_namespace_value.

        * call.c (make_temporary_var_for_ref_to_temp): Push decl into
        current scope.
        * lex.c (unqualified_name_lookup_error): Likewise.

        * class.c (alter_class): Use retrofit_lang_decl directly.
        * decl.c (push_local_name, dupliate_decls): Likewise.
        * semantics.c (omp_privatize_field): Likewise.

        Kill walk_namespaces.
        * cp-tree.h (walk_namespaces_fn, walk_namespaces): Delete.
        * decl.c (walk_namespaces_r, walk_namespaces): Delete.

        Kill per-namespace static_decls.
        * cp-tree.h (static_decls): Declare.
        (wrapup_globals_for_namespace,
        diagnose_inline_vars_for_namespace): Replace with ...
        (wrapup_namespace_globals): ... this.
        * decl.c (static_decls): Define.
        (wrapup_globals_for_namespace,
        diagnose_inline_vars_for_namespace): Replace with ...
        (wrapup_namespace_globals): ... this.
        (cxx_init_decl_processing): Initialize static_decls.
        * decl2.c (c_parse_final_cleanups): Adjust.
        * name-lookup.h (cp_binding_level): Remove static_decls member.
        * name-lookup.c (add_decl_to_level): Adjust.
        (begin_scope): Adjust.

2017-05-05  Paolo Carlini  <paolo.carlini@oracle.com>

        PR c++/71577
        * decl.c (reshape_init): Unconditionally return error_mark_node
        upon error about too many initializers.

2017-05-04  Nathan Sidwell  <nathan@acm.org>

        * constraint.cc (diagnose_check_constraint): Fix %E thinko.

2017-05-04  Martin Sebor  <msebor@redhat.com>

        PR translation/80280
        * call.c (print_z_candidate): Add missing quoting to %D and other
        like directives.
        (build_op_call_1): Same.
        * constraint.cc (diagnose_check_constraint): Same.
        * mangle.c (mangle_decl): Same.
        * name-lookup.c (cp_binding_level_debug): Same.
        (set_decl_namespace): Same.
        * parser.c (cp_parser_tx_qualifier_opt): Same.
        * pt.c (print_candidates_1): Same.
        (check_template_variable): Same.
        (tsubst_default_argument): Same.
        (most_specialized_partial_spec): Same.
        * semantics.c (omp_reduction_lookup): Same.
        * tree.c (check_abi_tag_redeclaration): Same.
        * typeck.c (comptypes): Same.
        * typeck2.c (abstract_virtuals_error_sfinae): Same.

2017-05-04  Nathan Sidwell  <nathan@acm.org>

        More global trees.
        * cp-tree.h (enum cp_tree_index): Add CPTI_GLOBAL,
        CPTI_GLOBAL_TYPE, CPTI_GLOBAL_IDENTIFIER, CPTI_ANON_IDENTIFIER,
        CPTI_INIT_LIST_IDENTIFIER.
        (global_namespace, global_type_node, global_identifier,
        anon_identifier, init_list_identifier): New.
        * decl.c (global_type_node, global_scope_name): Delete.
        (initialize_predefined_identifiers): Add new identifiers.
        (cxx_init_decl_processing): Adjust.
        * name-lookup.h (global_namespace, global_type_node): Delete.
        * name-lookup.c (global_namespace, anonymous_namespace_name,
        get_anonymous_namespace_name): Delete.
        (namespace_scope_ht_size, begin_scope, pushtag_1,
        push_namespace): Adjust,
        * call.c (type_has_extended_temps): Use init_list_identifier.
        * pt.c (listify): Likewise.

        * name-lookup.c: Reorder functions to make merging from modules
        branch simpler.

2017-05-03  Jason Merrill  <jason@redhat.com>

        * constexpr.c (cxx_eval_outermost_constant_expr): Use TV_CONSTEXPR.

2017-05-03  Nathan Sidwell  <nathan@acm.org>

        * cp-tree.h (enum cp_tree_index, cp_global_trees): Move earlier,
        along with #defines, to before name-lookup include.

2017-05-02  Paolo Carlini  <paolo.carlini@oracle.com>

        * pt.c (is_auto_or_concept): Remove.
        (type_uses_auto_or_concept): Remove, unused.
        (find_parameter_packs_r, extract_autos_r, is_auto_r): Adjust.
        * parser.c (tree_type_is_auto_or_concept): Remove, unused.
        * cp-tree.h (is_auto_or_concept): Remove.

2017-05-01  Xi Ruoyao  <ryxi@stu.xidian.edu.cn>

        PR c++/80038
        * cp-cilkplus.c (cilk_install_body_with_frame_cleanup): Don't
        add pedigree operation and detach call here.
        * cp-gimplify.c (cp_gimplify_expr): Remove the calls to
        cilk_cp_gimplify_call_params_in_spawned_fn.
        (cilk_cp_gimplify_call_params_in_spawned_fn): Remove function.
        * semantics.c (simplify_aggr_init_expr): Copy EXPR_CILK_SPAWN.

2017-04-29  Volker Reichelt  <v.reichelt@netcologne.de>

        * parser.c (cp_parser_member_declaration): Add fix-it hints for
        stray comma and missing semicolon at end of member declaration.

2017-04-27  Volker Reichelt  <v.reichelt@netcologne.de>

        * parser.c (cp_parser_cast_expression): Add target type of cast to
        diagnostic.
        * error.c (type_to_string): Add '{enum}' suffix to enumeration types.

2017-04-26  Paolo Carlini  <paolo.carlini@oracle.com>

        * decl.c (grok_ctor_properties, ambi_op_p, unary_op_p): Change
        return type to bool.
        * cp-tree.h (grok_ctor_properties): Update.

2017-04-26  Volker Reichelt  <v.reichelt@netcologne.de>

        * parser.c (cp_parser_nested_name_specifier_opt): Add fix-it
        information to diagnostic of invalid colon in nested-name-specifier.

2017-04-25  Volker Reichelt  <v.reichelt@netcologne.de>

        * parser.c (cp_parser_elaborated_type_specifier): Add fix-it to
        diagnostic of invalid class/struct keyword after enum.

2017-04-25  David Malcolm  <dmalcolm@redhat.com>

        * parser.c (cp_parser_member_declaration): Add fix-it hint
        for removing stray semicolons.

2017-04-25  David Malcolm  <dmalcolm@redhat.com>

        * name-lookup.c (get_std_name_hint): New function.
        (maybe_suggest_missing_header): New function.
        (suggest_alternative_in_explicit_scope): Call
        maybe_suggest_missing_header.

2017-04-25  David Malcolm  <dmalcolm@redhat.com>

        PR c++/80177
        * name-lookup.c (suggest_alternative_in_explicit_scope): Convert
        candidate type of bm from tree to const char *.
        (consider_binding_level): Likewise.
        (lookup_name_fuzzy): Likewise, using this to merge the best
        result from the preprocessor into bm, rather than immediately
        returning, so that better matches from reserved words can "win".
        Guard the rejection of keywords that don't start decl-specifiers
        so it only happens for FUZZY_LOOKUP_TYPENAME.

2017-04-24  Volker Reichelt  <v.reichelt@netcologne.de>

        * decl.c (grokdeclarator): Use %qT instead of %<%T%> in diagnostics.
        (start_enum): Likewise.
        (build_enumerator): Likewise. Use %qE instead of plain %E.
        * parser.c (cp_parser_mem_initializer_list): Use %qD instead of
        %<%D%> in diagnostics.
        (cp_parser_elaborated_type_specifier): Likewise.
        * pt.c (make_pack_expansion): Use %qT and %qE instead of
        %<%T%> and %<%E%> in diagnostics.
        (tsubst_pack_expansion): Likewise.

2017-04-24  David Malcolm  <dmalcolm@redhat.com>

        PR c++/80016
        * parser.c (cp_parser_unary_expression):  Generate a location
        range for alignof and sizeof expressions.

2017-04-24  Volker Reichelt  <v.reichelt@netcologne.de>

        * parser.c (cp_parser_cv_qualifier_seq_opt): Add fix-it info to
        error message.
        (cp_parser_virt_specifier_seq_opt): Likewise.
        (set_and_check_decl_spec_loc): Likewise twice.

2017-04-21  Jason Merrill  <jason@redhat.com>

        PR c++/80179 - ICE with initialized flexible array member.
        * constexpr.c (verify_ctor_sanity): Handle flexible array members.

2017-04-21  Richard Biener  <rguenther@suse.de>

        * cp-tree.h (copy_decl): Annotate with CXX_MEM_STAT_INFO.
        (copy_type): Likewise.
        * lex.c (copy_decl): Pass down mem-stat info.
        (copy_type): Likewise.

2017-04-20  Jonathan Wakely  <jwakely@redhat.com>

        PR c++/80473
        * init.c (build_new_1): Suppress notes about over-aligned new when
        the warning is suppressed.

2017-04-20  Volker Reichelt  <v.reichelt@netcologne.de>

        * parser.c (cp_parser_member_declaration): Add warning with fixit
        information for extra semicolon after in-class function definition.

2017-04-20  Jakub Jelinek  <jakub@redhat.com>

        PR middle-end/80423
        * tree.c (build_cplus_array_type): Call build_array_type
        with the intended TYPE_TYPELESS_STORAGE flag value, instead
        of calling build_array_type and modifying later TYPE_TYPELESS_STORAGE
        on the shared type.

2017-04-18  Marek Polacek  <polacek@redhat.com>

        PR c++/80244 - ICE with attribute in template alias.
        * tree.c (strip_typedefs): Handle UNDERLYING_TYPE.

        PR c++/80241 - ICE with alignas pack expansion.
        * error.c (dump_expr): Handle TREE_LIST.
        * parser.c (cp_parser_std_attribute_list): Return error_mark if
        make_pack_expansion returns an error.

2017-04-17  Bernd Edlinger  <bernd.edlinger@hotmail.de>

        PR c++/80287
        * class.c (fixup_may_alias): Fix all type variants.

2017-04-17  Jason Merrill  <jason@redhat.com>

        PR c++/80415 - wrong error with default arg and array reference.
        * tree.c (lvalue_kind): Return clk_class for an array prvalue.

        * pt.c (tsubst_init): Set TARGET_EXPR_DIRECT_INIT_P.

2017-04-15  Alexandre Oliva <aoliva@redhat.com>

        * decl.c (name_unnamed_type): Split out of...
        (grokdeclarator): ... this.
        * decl.h (name_unnamed_type): Declare.

2017-04-12  Richard Biener  <rguenther@suse.de>
        Bernd Edlinger  <bernd.edlinger@hotmail.de>

        PR middle-end/79671
        * tree.c (build_cplus_array_type): Set TYPE_TYPELESS_STORAGE
        for arrays of character or std::byte type.

2017-04-11  Jason Merrill  <jason@redhat.com>

        PR c++/80294 - ICE with constexpr and inheritance.
        * constexpr.c (reduced_constant_expression_p):
        A null constructor element is non-constant.
        (cxx_eval_indirect_ref): Don't VERIFY_CONSTANT before
        returning an empty base.

2017-04-11  Jakub Jelinek  <jakub@redhat.com>

        PR c++/80370
        * decl.c (cp_finish_decomp): If processing_template_decl on
        non-dependent decl, only set TREE_TYPE on the v[i] decls, but don't
        change their DECL_VALUE_EXPR nor cp_finish_decl them.  Instead make
        sure DECL_VALUE_EXPR is the canonical NULL type ARRAY_REF for tsubst
        processing.
        * pt.c (value_dependent_expression_p) <case VAR_DECL>: For variables
        with DECL_VALUE_EXPR, return true if DECL_VALUE_EXPR is type
        dependent.

2017-04-11  Jakub Jelinek  <jakub@redhat.com>

        PR c++/80363
        * error.c (dump_expr): Handle VEC_COND_EXPR like COND_EXPR.

2017-04-10  Jakub Jelinek  <jakub@redhat.com>

        PR c++/80176
        * tree.c (lvalue_kind): For COMPONENT_REF with BASELINK second
        operand, if it is a static member function, recurse on the
        BASELINK.

2017-04-10  Marek Polacek  <polacek@redhat.com>

        PR sanitizer/80348
        * typeck.c (cp_build_binary_op): Use NULL_TREE instead of NULL.  Set
        ORIG_TYPE earlier and not only when shortening.

2017-04-07  Jason Merrill  <jason@redhat.com>

        PR c++/80356 - ICE with reference to function template argument.
        PR c++/79294
        * pt.c (convert_nontype_argument_function): Adjust type even with a
        value-dependent argument.

        PR c++/80267 - ICE with nested capture of reference
        PR c++/60992
        * pt.c (tsubst_copy): Handle lookup finding a capture proxy.

2017-04-07  Marek Polacek  <polacek@redhat.com>

        PR sanitizer/80348
        * typeck.c (cp_build_binary_op): Convert COP[01] to ORIG_TYPE.

        PR c++/80095
        * call.c (build_over_call): Don't check cxx_dialect.
        * cp-gimplify.c (cp_gimplify_init_expr): Don't check cxx_dialect nor
        whether SUB is a CONSTRUCTOR.
        * init.c (build_new_1): Don't check cxx_dialect.
        * tree.c (replace_placeholders): Add a function comment.  Return if
        not in C++14, or if the object isn't a (member of a) class.
        * typeck2.c (store_init_value): Don't check cxx_dialect nor whether
        TYPE is CLASS_TYPE_P.

2017-04-05  Jakub Jelinek  <jakub@redhat.com>

        PR c++/80309
        * pt.c (canonical_type_parameter): Use vec_safe_grow_cleared instead
        of a loop doing vec_safe_push of NULL.  Formatting fixes.
        (rewrite_template_parm): Copy TEMPLATE_PARM_PARAMETER_PACK from oldidx
        to newidx before calling canonical_type_parameter on newtype.

2017-04-04  Volker Reichelt  <v.reichelt@netcologne.de>

        PR c++/80296
        * cxx-pretty-print.c (cxx_pretty_printer::expression): Add
        UNARY_PLUS_EXPR case.

2017-04-03  Jason Merrill  <jason@redhat.com>

        * semantics.c (finish_template_type): Check CLASSTYPE_TEMPLATE_INFO.

2017-04-03  Jonathan Wakely  <jwakely@redhat.com>

        * class.c (update_vtable_entry_for_fn): Fix typo in comment.
        * decl2.c (one_static_initialization_or_destruction): Likewise.
        * name-lookup.c (store_bindings): Likewise.
        * parser.c (make_call_declarator): Likewise.
        * pt.c (check_explicit_specialization): Likewise.

2017-04-03  Jason Merrill  <jason@redhat.com>

        PR sanitizer/79993 - ICE with VLA initialization from string
        PR c++/69487 - wrong VLA initialization from string
        * init.c (finish_length_check): Split out from build_vec_init.
        (build_vec_init): Handle STRING_CST.
        * typeck2.c (split_nonconstant_init): Handle STRING_CST.
        (digest_init_r): Don't give a STRING_CST VLA type.

2017-03-31  Jakub Jelinek  <jakub@redhat.com>

        PR c++/79572
        * cp-gimplify.c (cp_genericize_r): Sanitize INTEGER_CSTs with
        REFERENCE_TYPE.  Adjust ubsan_maybe_instrument_reference caller
        for NOP_EXPR to REFERENCE_TYPE.

        PR libstdc++/80251
        * cp-tree.h (enum cp_trait_kind): Add CPTK_IS_AGGREGATE.
        * cxx-pretty-print.c (pp_cxx_trait_expression): Handle
        CPTK_IS_AGGREGATE.
        * semantics.c (trait_expr_value): Handle CPTK_IS_AGGREGATE.
        Remove extraneous parens.
        (finish_trait_expr): Handle CPTK_IS_AGGREGATE.
        * parser.c (cp_parser_primary_expression): Handle RID_IS_AGGREGATE.
        (cp_parser_trait_expr): Likewise.

2017-03-27  Jakub Jelinek  <jakub@redhat.com>

        PR middle-end/80162
        * cp-tree.h (cxx_mark_addressable): Add array_ref_p argument.
        * typeck.c (cxx_mark_addressable): Likewise.  Look through
        VIEW_CONVERT_EXPR unless array_ref_p and VCE is from VECTOR_TYPE
        to ARRAY_TYPE.
        (cp_build_array_ref): Pass true as array_ref_p to cxx_mark_addressable.

2017-03-24  Jason Merrill  <jason@redhat.com>

        PR c++/77339 - ICE with invalid use of alias template.
        * pt.c (lookup_template_class_1): Don't try to enter the scope of an
        alias template.

2017-03-24  Marek Polacek  <polacek@redhat.com>

        PR c++/80119
        * cp-gimplify.c (cp_fold): Strip CLEANUP_POINT_EXPR if the expression
        doesn't have side effects.

2017-03-23  Jason Merrill  <jason@redhat.com>

        PR c++/80150 - ICE with overloaded variadic deduction.
        * pt.c (try_one_overload): Remove asserts.

        PR c++/77563 - missing ambiguous conversion error.
        * call.c (convert_like_real): Use LOOKUP_IMPLICIT.

2017-03-23  Marek Polacek  <polacek@redhat.com>

        * cp-tree.h: Remove a C_RID_YYCODE reference.

2017-03-22  Jakub Jelinek  <jakub@redhat.com>

        PR c++/80141
        * semantics.c (finish_omp_clause) <case OMP_CLAUSE_SIMDLEN,
        case OMP_CLAUSE_ALIGNED>: Call maybe_constant_value only when not
        processing_template_decl.

2017-03-21  Paolo Carlini  <paolo.carlini@oracle.com>

        PR c++/77752
        * name-lookup.c (pushtag_1): Add check for bogus, non template,
        std::initializer_list.

2017-03-21  Jakub Jelinek  <jakub@redhat.com>

        PR c++/35878
        * init.c (std_placement_new_fn_p, build_new_1): Formatting fixes.

2017-03-21  Ville Voutilainen  <ville.voutilainen@gmail.com>

        PR c++/35878
        * init.c (std_placement_new_fn_p): New.
        (build_new_1): Call it.

2017-03-20  Jason Merrill  <jason@redhat.com>

        PR c++/80096 - ICE with C++17 non-type auto.
        * pt.c (tsubst): Delay tsubst of type of template non-type
        parameter.

        PR c++/79519 - ICE with deleted template friend.
        * decl.c (grokdeclarator): Complain about misplaced function
        definition using =, as well.

        PR c++/79640 - infinite recursion with generic lambda.
        * pt.c (tsubst_copy) [VAR_DECL]: Register the dummy instantiation
        before substituting its initializer.

2017-03-20  Marek Polacek  <polacek@redhat.com>
            Paolo Carlini  <paolo.carlini@oracle.com>

        PR c++/80059 - ICE with noexcept and __transaction_atomic
        * except.c (build_must_not_throw_expr): Call
        instantiate_non_dependent_expr.

2017-03-19  Jason Merrill  <jason@redhat.com>

        PR c++/80084 - wrong C++17 decomposition by reference of parameter.
        * decl.c (cp_finish_decomp): Don't pull out the DECL_INITIAL of a
        reference decomposition.

        PR c++/80077 - error with constexpr and -fno-elide-constructors.
        * constexpr.c (cxx_eval_call_expression): Set ctx->call while
        expanding trivial constructor.

2017-03-17  Jason Merrill  <jason@redhat.com>

        PR c++/78345 - ICE initializing array from lambda.
        * init.c (build_aggr_init): Check array initializer.
        (build_vec_init): Check the type of a CONSTRUCTOR.

        PR c++/80073 - C++17 ICE with virtual base.
        * decl.c (xref_basetypes): Also check for indirect vbases.

2017-03-16  Jason Merrill  <jason@redhat.com>

        * decl.c (start_enum): std::byte aliases anything.

        PR c++/79797
        * constexpr.c (lookup_placeholder): Tweak.

2017-03-15  Jason Merrill  <jason@redhat.com>

        PR c++/80043 - ICE with -fpermissive
        * typeck.c (convert_for_assignment): Handle instantiate_type
        not giving an error.

2017-03-14  Nathan Sidwell  <nathan@acm.org>

        PR c++/79393 DR 1658 workaround
        * method.c (synthesized_method_base_walk): Inihibit abstract class
        virtual base access check here.
        (synthesized_method_walk): Not here.

2017-03-13  Nathan Sidwell  <nathan@acm.org>

        PR c++/79393 DR 1658 workaround
        * method.c (synthesized_method_walk): Check vbases of abstract
        classes for dtor walk.

2017-03-10  David Malcolm  <dmalcolm@redhat.com>

        PR translation/79848
        * decl.c (grokfndecl): Simplify uses of "%<%s%>" to "%qs".

2017-03-10  Jason Merrill  <jason@redhat.com>

        PR c++/79960 - alias templates and partial ordering
        * pt.c (comp_template_args): Add partial_order parm.
        (template_args_equal): Likewise.
        (comp_template_args_porder): New.
        (get_partial_spec_bindings): Use it.

2017-03-10  Marek Polacek  <polacek@redhat.com>

        PR c++/79967
        * decl.c (grokdeclarator): Check ATTRLIST before dereferencing it.

2017-03-10  Jakub Jelinek  <jakub@redhat.com>

        PR c++/79899
        * optimize.c (maybe_thunk_body): Don't ICE if fns[0] is NULL.
        Use XALLOCAVEC macro.

        PR c++/79896
        * decl.c (finish_enum_value_list): If value is error_mark_node,
        don't copy it and change its type.
        * init.c (constant_value_1): Return error_mark_node if DECL_INITIAL
        of CONST_DECL is error_mark_node.

2017-03-09  Marek Polacek  <polacek@redhat.com>

        PR c++/79900 - ICE in strip_typedefs
        * tree.c (strip_typedefs): Skip the attribute handling if T is
        a variant type which hasn't been updated yet.

        PR c++/79687 - wrong code with pointer-to-member
        * init.c (constant_value_1): Break if the variable has a dynamic
        initializer.

2017-03-08  Jason Merrill  <jason@redhat.com>

        PR c++/79797 - ICE with self-reference in array DMI.
        * constexpr.c (lookup_placeholder): Split out...
        (cxx_eval_constant_expression): ...from here.

2017-03-07  Jakub Jelinek  <jakub@redhat.com>

        PR c/79834
        * parser.c (cp_parser_omp_cancellation_point,
        cp_parser_omp_target_enter_data, cp_parser_omp_target_exit_data,
        cp_parser_omp_target_update): Change "may only be used in compound
        statements" diagnostics, such that the same translatable string is
        used for all pragmas.
        (cp_parser_pragma): Likewise.  Use error_at instead of
        cp_parser_error for that diagnostics.

2017-03-06  Marek Polacek  <polacek@redhat.com>

        PR c++/79796 - ICE with NSDMI and this pointer
        * call.c (build_over_call): Handle NSDMI with a 'this' by calling
        replace_placeholders.

2017-03-06  Jakub Jelinek  <jakub@redhat.com>

        PR c++/79822
        * constexpr.c (cxx_eval_statement_list): Treat empty ({ }) like
        ({ (void) 0; }).

2017-03-06  Jason Merrill  <jason@redhat.com>

        Revert "Allow deduction guides to look into primary template."
        * cp-tree.h, parser.c, pt.c, search.c: Revert.

2017-03-05  Paolo Carlini  <paolo.carlini@oracle.com>

        PR c++/70266
        * except.c (build_must_not_throw_expr): Perform the implicit
        conversions on the condition.

2017-03-03  Jason Merrill  <jason@redhat.com>

        * mangle.c (mangle_decl): Check -Wnoexcept-type instead of
        -Wc++1z-compat.

        Core issues 2273 and 2277
        * call.c (joust): Adjust using-declaration tiebreaker to handle
        the intermediate base case.
        * method.c (strip_inheriting_ctors): Just return the argument if
        !flag_new_inheriting_ctors.

2017-03-03  Richard Biener  <rguenther@suse.de>

        PR c++/79825
        * cp-gimplify.c (simple_empty_class_p): Handle EMPTY_CLASS_EXPR.

2017-03-03  Marek Polacek  <polacek@redhat.com>

        PR c++/79791
        * typeck.c (string_conv_p): In C++11, always call pedwarn with
        OPT_Wwrite_strings.

2017-03-02  Jason Merrill  <jason@redhat.com>

        Update overload resolution with deduction guides.
        * pt.c (do_class_deduction): Always build the copy guide.
        (copy_guide_p, template_guide_p): New.
        (build_deduction_guide): Remember the original constructor.
        * call.c (joust): Prefer the copy guide and non-template guides.

        Allow deduction guides to look into primary template.
        * cp-tree.h (struct saved_scope): Add deduction_guide_type.
        (struct cp_decl_specifier_seq): Add constructor_p.
        * parser.c (cp_parser_decl_specifier_seq): Set constructor_p.
        (cp_parser_init_declarator): Check it.  Set ctor_dtor_or_conv_p.
        Clear deduction_guide_type.  Don't handle deduction guide names.
        (cp_parser_declarator): Don't clear ctor_dtor_or_conv_p.
        (cp_parser_direct_declarator): Likewise.  Handle deduction guides.
        (cp_parser_member_declaration, cp_parser_cache_defarg)
        (cp_parser_objc_class_ivars): Set ctor_dtor_or_conv_p.
        * pt.c (tsubst_copy, tsubst_copy_and_build): Revert last change.
        (build_deduction_guide): Set deduction_guide_type.
        (dependent_scope_p): Check deduction_guide_type.
        * search.c (lookup_member): Likewise.

2017-03-02  Jakub Jelinek  <jakub@redhat.com>

        PR c++/79782
        * init.c (mark_exp_read_r): New function.
        (emit_mem_initializers): Use cp_walk_tree with mark_exp_read_r on
        whole arguments instead of plain mark_exp_read on TREE_LIST values.

2017-03-01  Jason Merrill  <jason@redhat.com>

        Class template argument deduction in new-expression
        * init.c (build_new): Handle deduction from no initializer.
        * parser.c (cp_parser_new_expression): Don't require a single
        expression for class template deduction.
        * typeck2.c (cxx_incomplete_type_diagnostic): Fix diagnostic for
        class template placeholder.
        * pt.c (tsubst_copy) [TEMPLATE_DECL]: Handle dependent context.
        (tsubst_copy_and_build) [TEMPLATE_ID_EXPR]: Handle SCOPE_REF.
        (redeclare_class_template): Set TEMPLATE_TYPE_PARM_FOR_CLASS.

2017-03-01  Jakub Jelinek  <jakub@redhat.com>

        PR c++/79746
        * init.c (emit_mem_initializers): When not constructing vbases of
        abstract classes, mark arguments as read for
        -Wunused-but-set-parameter.

2017-02-28  Jason Merrill  <jason@redhat.com>

        Class template argument deduction refinements
        * call.c (joust): Move deduction guide tiebreaker down.
        * decl.c (start_decl_1, cp_finish_decl, grokdeclarator): Allow class
        deduction with no initializer.
        * pt.c (build_deduction_guide): Handle implicit default/copy ctor.
        (do_class_deduction): Use that rather than special case.
        (do_auto_deduction): Handle null initializer.

2017-02-28  Jakub Jelinek  <jakub@redhat.com>

        * decl.c (find_decomp_class_base): Use cond ? G_("...") : G_("...")
        instead of just cond ? "..." : "...".
        (grokdeclarator): Likewise.
        (build_enumerator): Likewise.
        * init.c (build_new_1): Likewise.
        * call.c (build_new_method_call_1): Likewise.
        * parser.c: Include intl.h.
        (cp_parser_oacc_enter_exit_data): Use %s and ternary operator only for
        "enter"/"exit" keyword.
        (cp_finalize_oacc_routine): Don't use %s to supply portions of the
        message.

2017-02-27  Jason Merrill  <jason@redhat.com>

        PR c++/71568 - SFINAE forming pointer to member function
        * init.c (build_offset_ref): Check the return value of
        perform_or_defer_access_check.

2017-02-27  Marek Polacek  <polacek@redhat.com>

        * decl.c (expand_static_init): Add missing } in a comment.

2017-02-27  Volker Reichelt  <v.reichelt@netcologne.de>

        * init.c: Include intl.h.
        (build_new_1): Move message strings into pedwarn to make them
        -Wformat-security friendly. Mark string for translation.
        * pt.c (tsubst_copy_and_build): Mark string for translation.
        Make the pointer const.
        * semantics.c (finish_id_expression): Mark strings for translation.

2017-02-25  Jakub Jelinek  <jakub@redhat.com>

        * call.c (build_op_delete_call): Make msg1 and msg2 const.

2017-02-24  Jakub Jelinek  <jakub@redhat.com>

        PR c++/79588
        * call.c (build_over_call): Call check_function_arguments even for
        -Wrestrict, adjust check_function_arguments caller.
        * parser.c (cp_parser_postfix_expression): Don't handle -Wrestrict
        here.
        * typeck.c (cp_build_function_call_vec): Adjust
        check_function_arguments caller.

2017-02-24  Marek Polacek  <polacek@redhat.com>

        PR translation/79705
        * decl.c (check_redeclaration_exception_specification): Mark a string
        for translation.  Make the pointer const.

2017-02-23  Paolo Carlini  <paolo.carlini@oracle.com>

        PR c++/79361
        * pt.c (register_specialization): Check duplicate_decls return value
        for error_mark_node and pass it back.

2017-02-22  Jason Merrill  <jason@redhat.com>

        PR c++/79679 - missing destructor for argument
        * call.c (build_over_call): Don't pass tf_no_cleanup to argument
        conversions.

        * pt.c (do_class_deduction): Handle 0 argument case.

2017-02-22  Jakub Jelinek  <jakub@redhat.com>

        PR c++/79664
        * parser.c (cp_parser_omp_teams, cp_parser_omp_target): Use
        SET_EXPR_LOCATION on OMP_TARGET/OMP_TEAMS tree.
        * constexpr.c (potential_constant_expression_1): Handle
        OMP_*, OACC_* and CILK_* trees.  Use error_at with
        EXPR_LOC_OR_LOC (t, input_location) computed early
        instead of error, or error_at with location_of (t).

2017-02-22  Marek Polacek  <polacek@redhat.com>

        PR c++/79653
        * parser.c (cp_parser_std_attribute_spec): Don't build the attribute
        if the alignas expression is erroneous.
        * pt.c (tsubst_attribute): If tsubst_pack_expansion fails, return
        error_mark_node.

        PR c++/79657
        * semantics.c (finish_underlying_type): Bail out for incomplete enums.

2017-02-21  Jason Merrill  <jason@redhat.com>

        PR c++/50308 - wrong deprecated warning with ADL
        PR c++/17729 - duplicate deprecated warning
        * semantics.c (finish_id_expression): Only call mark_used on a
        function if we aren't building a call.

        PR c++/41727 - ICE with partial spec of partial instantiation
        * pt.c (process_partial_specialization): For now, don't check more
        specialized if there is more than one level of args.

2017-02-21  Marek Polacek  <polacek@redhat.com>

        PR c++/79535
        * cp-tree.h (maybe_reject_flexarray_init): Declare.
        * init.c (maybe_reject_flexarray_init): No longer static.
        Add check for current_function_decl.
        * parser.c (cp_parser_late_parse_one_default_arg): Reject
        a default mem-initializer for a flexible array.

2017-02-21  Jakub Jelinek  <jakub@redhat.com>
            Paolo Carlini  <paolo.carlini@oracle.com>

        PR c++/79654
        * decl.c (cp_finish_decomp): Don't set decl's type to error_mark_node
        on error.
        * pt.c (tsubst_decomp_names): Return error_mark_node if the first
        decl after the decomposition artificial decl has error_mark_node.
        * decl2.c (prune_vars_needing_no_initialization): Use error_operand_p
        instead of just == error_mark_node comparison.

2017-02-21  Jakub Jelinek  <jakub@redhat.com>

        PR sanitizer/79589
        * decl.c: Include gimplify.h.
        (cp_finish_decomp): Make sure there is no sharing of trees
        in between DECL_VALUE_EXPR of decomposition decls.

        PR c++/79655
        * constexpr.c (cxx_eval_array_reference): Diagnose negative subscript.

        PR c++/79639
        * constexpr.c (cxx_eval_store_expression): If *valp is a PTRMEM_CST,
        call cplus_expand_constant on it first.

2017-02-19  Jason Merrill  <jason@redhat.com>

        PR c++/78139 - destructor needed by new-expression
        * call.c (build_special_member_call): Use tf_no_cleanup.

        PR c++/78282 - auto template and pack expansion
        * pt.c (find_parameter_packs_r): Don't walk into the type of
        templates other than template template-parameters.

        PR c++/79606 - ICE with this->base_member in NSDMI
        * class.c (build_base_path): Check processing_template_decl.

        PR c++/79607 - ICE with T{} initializer
        * decl.c (type_dependent_init_p): Check the type of a CONSTRUCTOR.

        PR c++/79566 - elaborated-type-specifier in range for
        * parser.c (cp_parser_simple_declaration): Fix check for type
        definition.

        PR c++/79400 - confusing suggestion of 'noexcept'
        * parser.c (cp_parser_exception_specification_opt): Remove
        suggestion for deprecated dynamic exception-specification.

        PR c++/79470 - partial ordering with reference parameters
        * pt.c (unify) [INDIRECT_REF]: Handle pack expansions.

        PR c++/79500 - ICE with non-template deduction guide
        * pt.c (do_class_deduction): Use STRIP_TEMPLATE rather than
        DECL_TEMPLATE_RESULT.

        PR c++/79580 - ICE with compound literal
        * parser.c (cp_parser_class_head): If we're in the middle of an
        expression, use ts_within_enclosing_non_class.

        PR c++/79503 - inherited ctor taking base class
        * call.c (add_function_candidate): Also check that
        DECL_INHERITED_CTOR_BASE is reference-related to the parameter type.

2017-02-19  Paolo Carlini  <paolo.carlini@oracle.com>

        PR c++/79380
        * typeck.c (cxx_alignas_expr): Reject a non-integral alignas
        argument.

2017-02-19  Eric Fiselier  <eric@efcs.ca>
            Jonathan Wakely  <jwakely@redhat.com>

        PR c++/69523
        * parser.c (cp_parser_unqualified_id): Use OPT_Wliteral_suffix to
        control warning about literal suffix identifiers without a leading
        underscore.

2017-02-17  Jason Merrill  <jason@redhat.com>

        PR c++/79508 - lookup error with member template
        * parser.c (cp_parser_template_name): Clear
        parser->context->object_type if we aren't doing lookup.

        PR c++/78690 - ICE with using and global type with same name
        * pt.c (type_dependent_object_expression_p): True for
        IDENTIFIER_NODE.

        PR c++/79549 - C++17 ICE with non-type auto template parameter pack
        * pt.c (convert_template_argument): Just return an auto arg pack.
        (tsubst_template_args): Don't tsubst an auto pack type.

        PR c++/79556 - C++17 ICE with non-type auto
        * pt.c (do_auto_deduction): Don't try to deduce from null type.

        PR c++/79533 - C++17 ICE with temporary cast to reference
        * call.c (build_over_call): Conversion to a reference prevents copy
        elision.

2017-02-16  Jakub Jelinek  <jakub@redhat.com>
            Jason Merrill  <jason@redhat.com>

        PR c++/79502 - lost nodiscard attribute
        * pt.c (apply_late_template_attributes): Do apply non-dependent
        attributes to types.

2017-02-16  Jason Merrill  <jason@redhat.com>

        PR c++/78572 - ICE with self-modifying array initializer
        * constexpr.c (cxx_eval_store_expression): The object we're
        initializing is outside the constant-expression.
        (cxx_eval_call_expression): Set ctx->call.

        PR c++/79050 - ICE with undeduced auto and LTO
        * decl.c (poplevel): Remove undeduced auto decls.

2017-02-16  Jakub Jelinek  <jakub@redhat.com>

        PR c++/79512
        * parser.c (cp_parser_omp_target): For -fopenmp-simd
        ignore #pragma omp target even when not followed by identifier.

2017-02-15  Jason Merrill  <jason@redhat.com>
            Jakub Jelinek  <jakub@redhat.com>

        PR c++/79464 - ICE in IPA with omitted constructor parms
        * class.c (build_clone): Also omit parms from TYPE_ARG_TYPES.
        (adjust_clone_args): Adjust.
        (add_method): Remember omitted parms.
        * call.c (add_function_candidate): Likewise.
        * mangle.c (write_method_parms): Likewise.
        * method.c (ctor_omit_inherited_parms): Return false if there are no
        parms to omit.

2017-02-15  Martin Sebor  <msebor@redhat.com>

        PR c++/79363
        * init.c (maybe_reject_flexarray_init): New function.
        (perform_member_init): Call it.

2017-02-15  Jakub Jelinek  <jakub@redhat.com>

        PR c++/79301
        * parser.c (cp_parser_std_attribute): Don't pedwarn about
        [[deprecated]] with -std=c++11 and [[fallthrough]] with
        -std=c++11 and -std=c++14.

        PR c++/79288
        * decl.c (grokdeclarator): For static data members, handle thread_p
        only after handling inline.

2017-02-14  Marek Polacek  <polacek@redhat.com>

        PR c++/79420
        PR c++/79463
        * parser.c (cp_parser_postfix_dot_deref_expression): Avoid
        clobbering if the postfix expression isn't an EXPR_P.

2017-02-13  Jason Merrill  <jason@redhat.com>

        PR c++/79461 - ICE with lambda in constexpr constructor
        * constexpr.c (build_data_member_initialization): Ignore
        initialization of a local variable.

2017-02-13  Jakub Jelinek  <jakub@redhat.com>

        * init.c (warn_placement_new_too_small): Add missing space in
        diagnostics.
        * parser.c (cp_parser_oacc_declare): Likewise.
        * mangle.c (maybe_check_abi_tags): Likewise.

        PR c++/79232
        * typeck.c (cp_build_modify_expr): Handle properly COMPOUND_EXPRs
        on lhs that have {PRE{DEC,INC}REMENT,MODIFY,MIN,MAX,COND}_EXPR
        in the rightmost operand.

2017-02-13  Nathan Sidwell  <nathan@acm.org>

        PR c++/79296 - ICE mangling localized template instantiation
        * decl2.c (determine_visibility): Use template fn context for
        local class instantiations.

2017-02-11  Jason Merrill  <jason@redhat.com>

        PR c++/77659 - ICE with new and C++14 aggregate NSDMI
        * init.c (build_new): Make backups of any CONSTRUCTORs in init.
        (build_new_1): Use replace_placeholders.
        * tree.c (replace_placeholders_t): Also track whether we've seen a
        placeholder.
        (replace_placeholders, replace_placeholders_r): Adjust.
        * cp-tree.h: Adjust.

        PR c++/77790 - ICE with auto function in C++11 mode
        * decl.c (undeduced_auto_decl): Remove C++14 limitation.
        (require_deduced_type): Add complain parm, return bool.
        * cp-tree.h: Adjust.
        * decl2.c (mark_used): Use require_deduced_type.

2017-02-10  Jason Merrill  <jason@redhat.com>

        PR c++/78908 - template ops and bitfields
        * tree.c (build_min_non_dep): Use unlowered_expr_type.

        PR c++/78897 - constexpr union
        * constexpr.c (cxx_eval_store_expression): A store to a union member
        erases a previous store to another member.

        PR c++/71285 - member of fold-expression
        * semantics.c (finish_unary_fold_expr)
        (finish_binary_fold_expr): Use null type for fold-expressions.

        PR c++/79401 - protected inherited constructor
        * call.c (enforce_access): For inheriting constructor, find a base
        binfo in the path we already have.

2017-02-10  Marek Polacek  <polacek@redhat.com>

        PR c++/79435
        * pt.c (type_dependent_expression_p): Check if the expression type
        is null.

        PR c++/79184
        * cvt.c (ocp_convert): Add a sentinel against -Wint-in-bool-context
        if warnings shouldn't be given.

2017-02-10  Paolo Carlini  <paolo.carlini@oracle.com>

        PR c++/71737
        * pt.c (tsubst_decl): Don't try to preserve a typedef that names
        an error_mark_node as type.

2017-02-09  Jakub Jelinek  <jakub@redhat.com>
            Jason Merrill  <jason@redhat.com>

        PR c++/79143
        * pt.c (instantiate_class_template_1): Copy CLASSTYPE_NON_AGGREGATE
        from pattern to type.

2017-02-09  Jason Merrill  <jason@redhat.com>

        PR c++/79316 - default argument in deduction guide
        PR c++/79350 - explicit deduction guide
        * parser.c (cp_parser_constructor_declarator_p)
        (cp_parser_direct_declarator): Parse deduction guides more like
        constructors.
        * cp-tree.h (enum special_function_kind): Add sfk_deduction_guide.
        * tree.c (special_function_p): Return it.
        * decl.c (check_special_function_return_type): Handle it.
        (grokdeclarator, grokfndecl): Adjust.
        (cp_finish_decl): Pass flags to do_auto_deduction.
        * error.c (dump_decl_name): Use TFF_UNQUALIFIED_NAME.
        * pt.c (dguide_name_p): Take a const_tree.
        (do_class_deduction): Handle explicit.
        (do_auto_deduction): Pass flags through.
        (build_deduction_guide): Copy explicit flag.

2017-02-09  Jakub Jelinek  <jakub@redhat.com>

        PR c++/79429
        * parser.c (cp_parser_omp_ordered): Don't check for non-pragma_stmt
        non-pragma_compound context here.
        (cp_parser_omp_target): Likewise.
        (cp_parser_pragma): Don't call push_omp_privatization_clauses and
        parsing for ordered and target omp pragmas in non-pragma_stmt
        non-pragma_compound contexts.

        PR c/79431
        * parser.c (cp_parser_oacc_declare): Formatting fix.
        (cp_parser_omp_declare_target): Don't invoke symtab_node::get on
        automatic variables.

2016-02-09  Nathan Sidwell  <nathan@codesourcery.com>
            Chung-Lin Tang  <cltang@codesourcery.com>

        * parser.c (cp_parser_oacc_clause_tile): Disallow collapse.  Fix
        parsing.  Parse constant expression. Remove semantic checking.
        (cp_parser_omp_clause_collapse): Disallow tile.
        (cp_parser_omp_for_loop): Deal with tile clause.  Don't emit a parse
        error about missing for after already emitting one.  Use more
        conventional for idiom for unbounded loop.
        * pt.c (tsubst_omp_clauses): Handle OMP_CLAUSE_TILE.
        * semantics.c (finish_omp_clauses): Correct TILE semantic check.
        (finish_omp_for): Deal with tile clause.

2017-02-07  Nathan Sidwell  <nathan@acm.org>

        * method.c (synthesized_method_base_walk): New.  Broken out of ...
        (synthesized_method_walk): ... here.  Call it.  Cleanup
        initializations.

2017-02-07  Patrick Palka  <ppalka@gcc.gnu.org>

        PR c++/79360
        * typeck2.c (process_init_constructor_union): Consider only
        FIELD_DECLs when looking for an NSDMI.

2017-02-06  Jason Merrill  <jason@redhat.com>

        PR c++/71193 - incomplete types in templates
        * parser.c (cp_parser_postfix_dot_deref_expression): In a template
        handle incomplete type by pedwarning and then treating as dependent.

2017-02-06  Jakub Jelinek  <jakub@redhat.com>

        PR c++/79379
        * constexpr.c (cxx_eval_constant_expression): Handle ANNOTATE_EXPR.
        (potential_constant_expression_1): Likewise.

        PR c++/79377
        * tree.c (build_min_non_dep_op_overload): For POST{INC,DEC}REMENT_EXPR
        allow one fewer than expected arguments if flag_permissive.

        PR c++/79372
        * decl.c (cp_finish_decomp): On error set decl type to error_mark_node.
        * pt.c (tsubst_expr): Don't call tsubst_decomp_names on decompositions
        with error_mark_node type.

2017-02-03  Jason Merrill  <jason@redhat.com>

        PR c++/78689 - ICE on constructor with label
        * optimize.c (maybe_clone_body): Replace omitted parameters with
        null lvalues.
        * class.c (build_clone): Fix logic for omitting inherited parms.

        PR c++/12245 - excessive memory use
        * constexpr.c (maybe_constant_value): Fold maybe_constant_value_1
        back in.  Don't cache constants.
        (maybe_constant_init): Don't cache constants.

        PR c++/79294 - ICE with invalid template argument
        * pt.c (convert_nontype_argument_function): Check value-dependence.
        (convert_nontype_argument): Don't check it here for function ptrs.

2017-02-02  Richard Biener  <rguenther@suse.de>

        PR cp/14179
        * cp-gimplify.c (cp_fold): When folding a CONSTRUCTOR copy
        it lazily on the first changed element only and copy it
        fully upfront, only storing changed elements.

2017-02-02  Paolo Carlini  <paolo.carlini@oracle.com>

        PR c++/69637
        * decl2.c (grokbitfield): In case of error don't set-up DECL_INITIAL
        to the width.

2017-01-31  Jakub Jelinek  <jakub@redhat.com>

        PR c++/79304
        * error.c (dump_expr) <case COMPONENT_REF>: Don't print .
        after ARROW_EXPR.

2017-01-31  David Malcolm  <dmalcolm@redhat.com>

        PR c++/79298
        * name-lookup.c (suggest_alternative_in_explicit_scope): Resolve
        any namespace aliases.

2017-01-31  Nathan Sidwell  <nathan@acm.org>

        PR c++/79290
        * typeck.c (build_ptrmemfunc_access_expr): Set TREE_NO_WARNING.

        PR c++/67273
        PR c++/79253
        * pt.c: (instantiate_decl): Push to top level when current
        function scope doesn't match.  Only push lmabda scope stack when
        pushing to top.

        * cp-tree.h (instantiate_decl): Make defer_ok bool.
        * pt.c: Fix instantiate_decl calls to pass true/false not 0/1
        (instantiate_decl): Simplify and reorder state saving and restoration.

        PR c++/79264
        * lambda.c (maybe_generic_this_capture): Deal with template-id-exprs.
        * semantics.c (finish_member_declaration): Assert class is being
        defined.

2017-01-30  Alexandre Oliva <aoliva@redhat.com>

        Introduce C++ support in libcc1.
        * cp-tree.h (struct lang_identifier): Add oracle_looked_up.
        (ansi_opname): Rename to...
        (cp_operator_id): ... this.  Adjust all callers.
        (ansi_assopname): Rename to...
        (cp_assignment_operator_id): ... this.  Adjust all callers.
        (cp_literal_operator_id): Declare.
        (set_global_friend): Declare.
        (is_global_friend): Declare.
        (enum cp_oracle_request): New type.
        (cp_binding_oracle_function): New type.
        (cp_binding_oracle): Declare.
        (cp_finish_injected_record_type): Declare.
        * friend.c (global_friend): New var.
        (set_global_friend): New fn.
        (is_global_friend): New fn.
        (is_friend): Call is_global_friend.
        * name-lookup.c (cp_binding_oracle): New var.
        (query_oracle): New fn.
        (qualified_lookup_using_namespace): Call query_oracle.
        (lookup_name_real_1): Likewise.
        * parser.c (cp_literal_operator_id): Drop static.
        * search.c (friend_accessible_p): Call is_global_friend.
        * semantics.c (is_this_parameter): Accept a variable if the
        binding oracle is enabled.

2017-01-27  Jason Merrill  <jason@redhat.com>

        PR c++/78771 - ICE with inherited constructor.
        * call.c (build_over_call): Call deduce_inheriting_ctor here.
        * pt.c (tsubst_decl): Not here.
        * class.c (add_method): Or here.
        * method.c (deduce_inheriting_ctor): Handle clones.
        (implicitly_declare_fn): Don't deduce inheriting ctors yet.

2017-01-27  Adam Butcher  <adam@jessamine.co.uk>

        PR c++/64382
        * cp/parser.c (parsing_default_capturing_generic_lambda_in_template):
        New function.
        * cp/cp-tree.h: Declare it.
        * cp/semantics.c (finish_id_expression): Resolve names within a default
        capturing generic lambda defined within a template prior to
        instantiation to allow for captures to be added to the closure type.

2017-01-26  Jakub Jelinek  <jakub@redhat.com>

        PR c++/68727
        * cp-tree.def (OFFSETOF_EXPR): Bump number of operands to 2.
        * cp-tree.h (finish_offsetof): Add OBJECT_PTR argument.
        * parser.c (cp_parser_builtin_offsetof): Pass result of
        build_static_cast of null_pointer_node to finish_offsetof.
        * semantics.c (finish_offsetof): Add OBJECT_PTR argument, use
        it for -Winvalid-offsetof pedwarn instead of trying to guess
        original offsetof type from EXPR.  Save OBJECT_PTR as a new
        second operand to OFFSETOF_EXPR.
        * pt.c (tsubst_copy_and_build) <case OFFSETOF_EXPR>: Adjust
        finish_offsetof caller, pass the second operand of OFFSETOF_EXPR
        as OBJECT_PTR.

2017-01-26  Jason Merrill  <jason@redhat.com>

        * name-lookup.c (parse_using_directive): Deprecate strong using.

        PR c++/79176 - lambda ICE with -flto -Os
        * decl2.c (vague_linkage_p): Handle decloned 'tors.
        * tree.c (decl_linkage): Likewise.

2017-01-25  Martin Sebor  <msebor@redhat.com>

        * decl.c (grokdeclarator): Fix a typo in a comment.

2017-01-25  Jakub Jelinek  <jakub@redhat.com>

        PR c++/78896
        * decl.c (cp_finish_decomp): Disallow memberwise decomposition of
        lambda expressions.

        PR c++/77914
        * parser.c (cp_parser_lambda_declarator_opt): Pedwarn with
        OPT_Wpedantic on lambda templates for -std=c++14 and higher.

2017-01-25  Maxim Ostapenko  <m.ostapenko@samsung.com>

        PR lto/79061
        * decl.c (cxx_init_decl_processing): Pass main_input_filename
        to build_translation_unit_decl.

2017-01-24  Jakub Jelinek  <jakub@redhat.com>

        PR c++/79205
        * cp-gimplify.c (cp_genericize_r): Add result of
        convert_from_reference on invisiref parm to p_set.

2017-01-24  Nathan Sidwell  <nathan@acm.org>

        PR c++/78469 - defaulted ctor and inaccessible dtor
        * cp-tree.h (tsubst_flags): Add tf_no_cleanup.
        * init.c (build_new_1): Pass tf_no_cleanup to build_value_init.
        * tree.c (build_target_expr): Check tf_no_cleanup.

        PR c++/79118 - anon-members and constexpr
        * constexpr.c (cx_check_missing_mem_inits): Caller passes type not
        ctor decl.  Recursively check anonymous members.
        (register_constexpr_fundef): Adjust cx_check_missing_mem_inits
        call.
        (explain_invalid_constexpr_fn): Likewise.

2017-01-23  Nathan Sidwell  <nathan@acm.org>

        PR c++/71710 - template using directive of field
        * pt.c (tsubst_copy_and_build [COMPONENT_REF]): Move FIELD_DECL
        check earlier.

        PR c++/71406 - ICE with scope-ref'd template id exprs
        PR c++/77508
        * typeck.c (finish_class_member_access_expr): Break up SCOPE_REF
        before breaking up TEMPLATE_ID_EXPR.

2017-01-20  Nathan Sidwell  <nathan@acm.org>

        PR c++/78495 - wrong code inherited ctor and invisi-ref parm
        * cp-gimplify.c (cp_generize_r): Don't skip thunks.

2017-01-20  David Malcolm  <dmalcolm@redhat.com>

        PR c++/77829
        PR c++/78656
        * cp-tree.h (suggest_alternatives_for): Add bool param.
        (suggest_alternative_in_explicit_scope): New decl.
        * error.c (qualified_name_lookup_error): When SCOPE is a namespace
        that isn't the global one, call new function
        suggest_alternative_in_explicit_scope, only calling
        suggest_alternatives_for if it fails, and disabling near match
        searches fort that case.  When SCOPE is the global namespace,
        pass true for new param to suggest_alternatives_for to allow for
        fuzzy name lookups.
        * lex.c (unqualified_name_lookup_error): Pass true for new param
        to suggest_alternatives_for.
        * name-lookup.c (consider_binding_level): Add forward decl.
        (suggest_alternatives_for): Add "suggest_misspellings" param,
        using it to conditionalize the fuzzy name-lookup code.
        (suggest_alternative_in_explicit_scope): New function.
        * parser.c (cp_parser_primary_expression): When calling
        finish_id_expression, pass location of id_expression rather
        than that of id_expr_token.
        (cp_parser_id_expression): Convert local "unqualified_id" from
        tree to cp_expr to avoid implicitly dropping location information.

2017-01-20  Marek Polacek  <polacek@redhat.com>

        PR c/64279
        * call.c (build_conditional_expr_1): Warn about duplicated branches.
        * semantics.c (finish_expr_stmt): Build statement using the proper
        location.

2017-01-19  Jason Merrill  <jason@redhat.com>

        US 20 - forwarding references and class template argument deduction
        * cp-tree.h (TEMPLATE_TYPE_PARM_FOR_CLASS): New.
        * pt.c (push_template_decl_real): Set it.
        (maybe_adjust_types_for_deduction): Check it.
        (rewrite_template_parm): Copy it.

        US 19 - deduction guides and constructors
        * call.c (joust): Prefer deduction guides to constructors.
        * pt.c (build_deduction_guide): Set DECL_ARTIFICIAL.
        (deduction_guide_p): Check DECL_P.

        * decl.c (check_initializer): Always use build_aggr_init for array
        decomposition.

        PR c++/79130 - decomposition and direct-initialization
        * init.c (build_aggr_init): Communicate direct-initialization to
        build_vec_init.
        (build_vec_init): Check for array copy sooner.
        * parser.c (cp_parser_decomposition_declaration): Remove call to
        build_x_compound_expr_from_list.

2017-01-18  Jason Merrill  <jason@redhat.com>

        PR c++/68666 - member variable template-id
        * typeck.c (finish_class_member_access_expr): Handle variable
        template-id.
        * pt.c (lookup_and_finish_template_variable): No longer static.
        * cp-tree.h: Declare it.

2017-01-18  Nathan Sidwell  <nathan@acm.org>

        PR c++/78488
        * call.c (build_over_call): When checking ellipsis conversions for
        an inherited ctor, make sure there is at least one conversion.

2017-01-18  Jason Merrill  <jason@redhat.com>

        PR c++/78894 - ICE with class deduction and default arg
        * pt.c (build_deduction_guide): Set DECL_PRIMARY_TEMPLATE.

2017-01-18  Markus Trippelsdorf  <markus@trippelsdorf.de>

        PR c++/77489
        * mangle.c (write_discriminator): Reorganize abi warning check.

2017-01-18  Nathan Sidwell  <nathan@acm.org>

        * cp-tree.h: Clarify exception spec node comment.
        * except.c (nothrow_spec_p): Simplify by checking node-equality.

        PR c++/79091
        * mangle.c (write_exception_spec): Check nothrow explicitly.
        (write_encoding): Don't increment processing_template_decl around
        encoding.

2017-01-18  Markus Trippelsdorf  <markus@trippelsdorf.de>

        PR c++/70182
        * mangle.c (write_template_args): Add "on" for operator names.

2017-01-18  Markus Trippelsdorf  <markus@trippelsdorf.de>

        PR c++/77489
        * mangle.c (write_discriminator): Handle discriminator >= 10.

2017-01-17  Nathan Sidwell  <nathan@acm.org>

        PR c++/61636
        * cp-tree.h (maybe_generic_this_capture): Declare.
        * lambda.c (resolvable_dummy_lambda): New, broken out of ...
        (maybe_resolve_dummy): ... here.  Call it.
        (maybe_generic_this_capture): New.
        * parser.c (cp_parser_postfix_expression): Speculatively capture
        this in generic lambda in unresolved member function call.
        * pt.c (tsubst_copy_and_build): Force hard error from failed
        member function lookup in generic lambda.

2017-01-17  Aldy Hernandez  <aldyh@redhat.com>

        PR c++/70565
        * cp-array-notation.c (expand_array_notation_exprs): Handle
        OMP_PARALLEL.

2017-01-11  Jason Merrill  <jason@redhat.com>

        PR c++/78337 - ICE on invalid with generic lambda
        * semantics.c (process_outer_var_ref): Check if containing_function
        is null.  Move inform call under complain test.

2017-01-11  Nathan Sidwell  <nathan@acm.org>

        PR c++/77812
        * name-lookup.c (set_namespace_binding_1): An overload of 1 decl
        is a new overload.

2017-01-11  Nathan Sidwell  <nathan@acm.org>

        * name-lookup.c (push_overloaded_decl_1): Refactor OVERLOAD creation.

2017-01-11  Jakub Jelinek  <jakub@redhat.com>

        PR c++/78341
        * parser.c (cp_parser_std_attribute_spec): Remove over-eager
        assertion.  Formatting fix.

        PR c++/72813
        * decl2.c (c_parse_final_cleanups): Set flag_syntax_only to 1 after
        writing PCH file.

2017-01-10  David Malcolm  <dmalcolm@redhat.com>

        PR c++/77949
        * parser.c (cp_parser_class_specifier_1): Only suggest inserting
        a missing semicolon if we have a valid insertion location for
        the fix-it hint.

2017-01-10  Jason Merrill  <jason@redhat.com>

        FI 20, decomposition declaration with parenthesized initializer.
        * parser.c (cp_parser_decomposition_declaration): Use
        cp_parser_initializer.

2017-01-09  Jason Merrill  <jason@redhat.com>

        Implement P0195R2, C++17 variadic using.
        * parser.c (cp_parser_using_declaration): Handle ellipsis and comma.
        * pt.c (tsubst_decl): Handle pack expansion in USING_DECL_SCOPE.
        * error.c (dump_decl): Likewise.

2017-01-09  Jakub Jelinek  <jakub@redhat.com>

        PR translation/79019
        PR translation/79020
        * semantics.c (finish_omp_clauses): Add missing whitespace to
        translatable strings.
        * cp-cilkplus.c (cpp_validate_cilk_plus_loop_aux): Fix comment typo.

2017-01-07  Jason Merrill  <jason@redhat.com>

        PR c++/78948 - instantiation from discarded statement
        * parser.h (struct cp_parser): Remove in_discarded_stmt field.
        * cp-tree.h (in_discarded_stmt): Declare it.
        (struct saved_scope): Add discarded_stmt bitfield.
        (in_discarded_stmt): New macro.
        * decl2.c (mark_used): Check it.
        * parser.c (cp_parser_selection_statement): Adjust.
        (cp_parser_jump_statement): Adjust.

2017-01-05  Jakub Jelinek  <jakub@redhat.com>

        PR c++/78931
        * decl.c (cp_finish_decomp): Remove probe variable, if tt is
        REFERENCE_REF_P, set tt to its operand.

        PR c++/78890
        * class.c (check_field_decls): Diagnose REFERENCE_TYPE fields in
        unions even for C++11 and later.

2017-01-05  Nathan Sidwell  <nathan@acm.org>

        PR c++/78765
        * pt.c (convert_nontype_argument): Don't try and see if integral
        or enum expressions are constants prematurely.

2017-01-04  Marek Polacek  <polacek@redhat.com>

        PR c++/64767
        * typeck.c (cp_build_binary_op): Warn when a pointer is compared with
        a zero character literal.

2017-01-04  Jakub Jelinek  <jakub@redhat.com>

        PR c++/78949
        * typeck.c (cp_build_unary_op): Call mark_rvalue_use on arg if it has
        vector type.

        PR c++/78693
        * parser.c (cp_parser_simple_declaration): Only complain about
        inconsistent auto deduction if auto_result doesn't use auto.

        * parser.c (cp_parser_simple_declaration): Diagnose function
        declaration among more than one init-declarators with auto
        specifier.

        PR c++/71182
        * parser.c (cp_lexer_previous_token): Use vec_safe_address in the
        assertion, as lexer->buffer may be NULL.

2017-01-04  Marek Polacek  <polacek@redhat.com>

        PR c++/77545
        PR c++/77284
        * constexpr.c (potential_constant_expression_1): Handle CLEANUP_STMT.

2017-01-04  Nathan Sidwell  <nathan@acm.org>

        PR c++/66735
        * cp-tree.h (DECLTYPE_FOR_REF_CAPTURE): New.
        (lambda_capture_field_type): Update prototype.
        * lambda.c (lambda_capture_field_type): Add is_reference parm.
        Add referenceness here.
        (add_capture): Adjust lambda_capture_field_type call, refactor
        error checking.
        * pt.c (tsubst): Adjust lambda_capture_field_type call.

2017-01-01  Jakub Jelinek  <jakub@redhat.com>

        Update copyright years.
\f
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