changelog: Fix extra space after tab.

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

2022-11-20  Patrick Palka  <ppalka@redhat.com>

        * constraint.cc (struct norm_entry): Define.
        (struct norm_hasher): Define.
        (norm_cache): Define.
        (normalize_concept_check): Add function comment.  Cache the
        the normal form of the substituted concept-id.  Canonicalize
        generic arguments as NULL_TREE.  Don't coerce arguments unless
        they were substituted.
        (normalize_concept_definition): Simplify.  Use norm_cache
        instead of normalized_map.

2022-11-20  Patrick Palka  <ppalka@redhat.com>

        * pt.cc (coerce_template_parms): Salvage part of the function
        comment from c_innermost_t_p.  Handle parms being a full
        template parameter list.
        (coerce_innermost_template_parms): Remove.
        (lookup_template_class): Use c_t_p instead of c_innermost_t_p.
        (finish_template_variable): Likewise.
        (tsubst_decl): Likewise.
        (instantiate_alias_template): Likewise.

2022-11-19  Jakub Jelinek  <jakub@redhat.com>

        * constexpr.cc (cxx_eval_constant_expression): Implement C++23
        P2647R1 - Permitting static constexpr variables in constexpr functions.
        Allow DECL_EXPRs of decl_constant_var_p static or thread_local vars.
        (potential_constant_expression_1): Similarly, except use
        decl_maybe_constant_var_p instead of decl_constant_var_p if
        processing_template_decl.

2022-11-19  Jeff Chapman II  <jchapman@lock3software.com>
            Andrew Sutton   <asutton@lock3software.com>
            Andrew Marmaduke  <amarmaduke@lock3software.com>
            Michael Lopez  <mlopez@lock3software.com>
            Jason Merrill   <jason@redhat.com>

        * cp-tree.h (enum cp_tree_index): Add
        CPTI_PSEUDO_CONTRACT_VIOLATION.
        (pseudo_contract_violation_type): New macro.
        (struct saved_scope): Add x_processing_contract_condition.
        (processing_contract_condition): New macro.
        (comparing_override_contracts): New variable decl.
        (find_contract): New inline.
        (set_decl_contracts): New inline.
        (get_contract_semantic): New inline.
        (set_contract_semantic): New inline.
        * constexpr.cc (cxx_eval_assert): Split out from...
        (cxx_eval_internal_function): ...here.
        (cxx_eval_constant_expression): Use it for contracts.
        (potential_constant_expression_1): Handle contracts.
        * cp-gimplify.cc (cp_genericize_r): Handle contracts.
        * cp-objcp-common.cc (cp_tree_size): Handle contracts.
        (cp_common_init_ts): Handle contracts.
        (cp_handle_option): Handle contracts.
        * decl.cc (duplicate_decls): Handle contracts.
        (check_tag_decl): Check for bogus contracts.
        (start_decl): Check flag_contracts.
        (grokfndecl): Call rebuild_postconditions.
        (grokdeclarator): Handle contract attributes.
        (start_preparsed_function): Call start_function_contracts.
        (finish_function): Call finish_function_contracts.
        * decl2.cc (cp_check_const_attributes): Skip contracts.
        (comdat_linkage): Handle outlined contracts.
        * error.cc (dump_type): Handle null TYPE_IDENTIFIER.
        * g++spec.cc (EXPERIMENTAL): New macro.
        (lang_specific_driver): Add -lstdc++exp if -fcontracts.
        * mangle.cc (write_encoding): Handle outlined contracts.
        * module.cc (trees_out::fn_parms_init): Handle outlined contracts.
        (trees_in::fn_parms_init): Likewise.
        (check_mergeable_decl): Likewise.
        (module_state_config::get_dialect): Record -fcontracts.
        * parser.h (struct cp_unparsed_functions_entry): Add contracts.
        * parser.cc (unparsed_contracts): New macro.
        (push_unparsed_function_queues): Adjust.
        (contract_attribute_p): New.
        (cp_parser_statement): Check contracts.
        (cp_parser_decl_specifier_seq): Handle contracts.
        (cp_parser_skip_to_closing_square_bracket): Split out...
        (cp_parser_skip_up_to_closing_square_bracket): ...this fn.
        (cp_parser_class_specifier): Do contract late parsing.
        (cp_parser_class_head): Check contracts.
        (cp_parser_contract_role): New.
        (cp_parser_contract_mode_opt): New.
        (find_error, contains_error_p): New.
        (cp_parser_contract_attribute_spec): New.
        (cp_parser_late_contract_condition): New.
        (cp_parser_std_attribute_spec): Handle contracts.
        (cp_parser_save_default_args): Also save contracts.
        * pt.cc (register_parameter_specializations): No longer static.
        (register_local_identity): New.
        (check_explicit_specialization): Call remove_contract_attributes.
        (tsubst_contract, tsubst_contract_attribute): New.
        (tsubst_contract_attributes): New.
        (tsubst_attribute): Add comment.
        (tsubst_copy): Also allow parm when processing_contract_condition.
        (tsubst_expr): Handle contracts.
        (regenerate_decl_from_template): Handle contracts.
        * search.cc (check_final_overrider): Compare contracts.
        * semantics.cc (set_cleanup_locs): Skip POSTCONDITION_STMT.
        (finish_non_static_data_member): Check contracts.
        (finish_this_expr): Check contracts.
        (process_outer_var_ref): Handle contracts.
        (finish_id_expression_1): Handle contracts.
        (apply_deduced_return_type): Adjust contracts.
        * tree.cc (handle_contract_attribute): New.
        (get_innermost_component, is_this_expression): New.
        (comparing_this_references): New.
        (equivalent_member_references): New.
        (cp_tree_equal): Check it.
        * typeck.cc (check_return_expr): Apply contracts.
        * Make-lang.in: Add contracts.o.
        * config-lang.in: Add contracts.cc.
        * cp-tree.def (ASSERTION_STMT, PRECONDITION_STMT)
        (POSTCONDITION_STMT): New.
        * contracts.h: New file.
        * contracts.cc: New file.

2022-11-18  Jakub Jelinek  <jakub@redhat.com>

        * decl.cc (grokdeclarator): Implement
        CWG2635 - Constrained structured bindings.  Emit a pedwarn on
        constrained auto type.  Add auto_diagnostic_group for error_at
        and inform for non-auto type on structured bindings declaration.

2022-11-18  Marek Polacek  <polacek@redhat.com>

        PR c++/104066
        * decl.cc (grokdeclarator): Check funcdecl_p before complaining
        about constinit.

2022-11-16  Marek Polacek  <polacek@redhat.com>

        PR c++/106649
        * constexpr.cc (constexpr_error): New function.
        (is_valid_constexpr_fn): Use constexpr_error.
        (maybe_save_constexpr_fundef): Call
        require_potential_rvalue_constant_expression_fncheck rather than
        require_potential_rvalue_constant_expression.  Register the
        function if -Wno-invalid-constexpr was specified.
        (explain_invalid_constexpr_fn): Don't return early if a function marked
        'constexpr' that isn't actually a constant expression was called.
        (non_const_var_error): Add a bool parameter.  Use constexpr_error.
        (inline_asm_in_constexpr_error): Likewise.
        (cxx_eval_constant_expression): Adjust calls to non_const_var_error
        and inline_asm_in_constexpr_error.
        (potential_constant_expression_1): Add a bool parameter.  Use
        constexpr_error.
        (require_potential_rvalue_constant_expression_fncheck): New function.
        * cp-tree.h (require_potential_rvalue_constant_expression_fncheck):
        Declare.
        * method.cc (struct comp_info): Call
        require_potential_rvalue_constant_expression_fncheck rather than
        require_potential_rvalue_constant_expression.

2022-11-16  Jakub Jelinek  <jakub@redhat.com>

        * typeck.cc (next_common_initial_sequence): Return false members have
        different DECL_ALIGN.
        (layout_compatible_type_p): Don't test TYPE_ALIGN of ENUMERAL_TYPE
        or CLASS_TYPE_P.

2022-11-16  Jakub Jelinek  <jakub@redhat.com>

        PR c++/107624
        * call.cc (keep_unused_object_arg): New function.
        (build_op_call): Use it.
        (build_op_subscript): Likewise.
        (build_new_op): Similarly for ARRAY_REF.
        (build_new_method_call): Use it.
        * decl.cc (grok_op_properties): For C++20 and earlier, if operator[]
        is static member function, require exactly one parameter rather than
        exactly two parameters.

2022-11-16  Jakub Jelinek  <jakub@redhat.com>

        * typeck.cc (cp_build_modify_expr): Implement CWG 2654
        - Un-deprecation of compound volatile assignments.  Remove
        -Wvolatile warning about compound volatile assignments.

2022-11-16  Jakub Jelinek  <jakub@redhat.com>

        * cp-tree.def (CONCEPT_DECL): Move to c-common.def.
        * cp-objcp-common.cc (cp_common_init_ts): Don't handle CONCEPT_DECL
        here.
        * cp-tree.h (finish_concept_definition): Add ATTRS parameter.
        * parser.cc (cp_parser_concept_definition): Parse attributes in
        between identifier and =.  Adjust finish_concept_definition
        caller.
        * pt.cc (finish_concept_definition): Add ATTRS parameter.  Call
        cplus_decl_attributes.
        * constraint.cc (build_standard_check): If CONCEPT_DECL is
        TREE_DEPRECATED, emit -Wdeprecated-declaration warnings.

2022-11-15  Marek Polacek  <polacek@redhat.com>

        PR c++/107492
        * decl.cc (grokdeclarator): Only emit a -Wignored-qualifiers warning
        when funcdecl_p.

2022-11-15  Patrick Palka  <ppalka@redhat.com>

        * constexpr.cc (potential_constant_expression_1)
        <case *_CAST_EXPR>: Use
        cast_valid_in_integral_constant_expression_p instead of
        open coding it.
        * constraint.cc (tsubst_valid_expression_requirement): Adjust
        calls to tsubst_copy_and_build and tsubst_expr.
        (tsubst_constraint): Likewise.
        (satisfy_atom): Likewise.
        (diagnose_trait_expr): Likewise.
        * cp-tree.h (tsubst_copy_and_build): Remove i_c_e_p parameter.
        (tsubst_expr): Likewise.
        * init.cc (get_nsdmi): Adjust calls to tsubst_copy_and_build
        and tsubst_expr.
        * pt.cc (expand_integer_pack): Likewise.
        (instantiate_non_dependent_expr_internal): Likewise.
        (tsubst_friend_function): Likewise.
        (tsubst_attribute): Likewise.
        (instantiate_class_template): Likewise.
        (tsubst_template_arg): Likewise.
        (gen_elem_of_pack_expansion_instantiation): Likewise.
        (tsubst_fold_expr_init): Likewise.
        (tsubst_pack_expansion): Likewise.
        (tsubst_default_argument): Likewise.
        (tsubst_function_decl): Likewise.
        (tsubst_decl): Likewise.
        (tsubst_arg_types): Likewise.
        (tsubst_exception_specification): Likewise.
        (tsubst): Likewise.
        (tsubst_init): Likewise.
        (tsubst_copy): Likewise.
        (tsubst_omp_clause_decl): Likewise.
        (tsubst_omp_clauses): Likewise.
        (tsubst_copy_asm_operands): Likewise.
        (tsubst_omp_for_iterator): Likewise.
        (tsubst_expr): Likewise.  Remove i_c_e_p parameter.
        (tsubst_omp_udr): Likewise.
        (tsubst_non_call_postfix_expression): Likewise.  Remove i_c_e_p parameter.
        (tsubst_lambda_expr): Likewise.
        (tsubst_copy_and_build_call_args): Likewise.
        (tsubst_copy_and_build): Likewise.  Remove i_c_e_p parameter.
        <case IDENTIFIER_NODE>: Adjust call to finish_id_expression
        following removal of i_c_e_p.
        <case *_CAST_EXPR>: Remove C++98-specific cast validity check
        guarded by i_c_e_p.
        (maybe_instantiate_noexcept): Adjust calls to
        tsubst_copy_and_build and tsubst_expr.
        (instantiate_body): Likewise.
        (instantiate_decl): Likewise.
        (tsubst_initializer_list): Likewise.
        (tsubst_enum): Likewise.

2022-11-15  Patrick Palka  <ppalka@redhat.com>

        * cp-lang.cc (objcp_tsubst_copy_and_build): Remove
        function_p parameter.
        * cp-objcp-common.h (objcp_tsubst_copy_and_build):
        Likewise.
        * cp-tree.h (tsubst_copy_and_build): Likewise.
        * init.cc (get_nsdmi): Adjust calls to tsubst_copy_and_build.
        * pt.cc (expand_integer_pack): Likewise.
        (instantiate_non_dependent_expr_internal): Likewise.
        (tsubst_function_decl): Likewise.
        (tsubst_arg_types): Likewise.
        (tsubst_exception_specification): Likewise.
        (tsubst): Likewise.
        (tsubst_copy_asm_operands): Likewise.
        (tsubst_expr): Likewise.
        (tsubst_non_call_postfix_expression): Likewise.
        (tsubst_lambda_expr): Likewise.
        (tsubst_copy_and_build_call_args): Likewise.
        (tsubst_copy_and_build): Remove function_p parameter
        and adjust function comment.  Adjust recursive calls.
        <case CALL_EXPR>: Update outdated comment about when
        we can see an IDENTIFIER_NODE callee with koenig_p=false.
        (maybe_instantiate_noexcept): Adjust calls to
        tsubst_copy_and_build.

2022-11-15  Jakub Jelinek  <jakub@redhat.com>

        * cp-tree.h (next_common_initial_seqence): Rename to ...
        (next_common_initial_sequence): ... this.
        * typeck.cc (next_common_initial_seqence): Rename to ...
        (next_common_initial_sequence): ... this.
        (layout_compatible_type_p): Call next_common_initial_sequence
        rather than next_common_initial_seqence.
        * semantics.cc (is_corresponding_member_aggr): Likewise.

2022-11-15  Jakub Jelinek  <jakub@redhat.com>

        * decl.cc (grok_op_properties): Implement C++23 P2589R1
        - static operator[].  Handle operator[] similarly to operator()
        - allow static member functions, but pedwarn on it for C++20 and
        older.  Unlike operator(), perform rest of checks on it though for
        C++20.
        * call.cc (add_operator_candidates): For operator[] with class
        typed first parameter, pass that parameter as first_arg and
        an adjusted arglist without that parameter.

2022-11-15  Patrick Palka  <ppalka@redhat.com>

        PR c++/107638
        * tree.cc (cxx_attribute_table): Don't conditionally exclude
        the init_priority entry.
        (handle_init_priority_attribute): Remove ATTRIBUTE_UNUSED.
        Return error_mark_node if !SUPPORTS_INIT_PRIORITY.

2022-11-15  Marek Polacek  <polacek@redhat.com>

        * call.cc (maybe_warn_dangling_reference): Don't warn when initializing
        a non-const lvalue reference.

2022-11-14  Jason Merrill  <jason@redhat.com>

        * pt.cc (tsubst_friend_function): Check satisfaction.

2022-11-14  Martin Liska  <mliska@suse.cz>

        Revert:
        2022-11-14  Martin Liska  <mliska@suse.cz>

        * Make-lang.in: Support Sphinx based documentation.

2022-11-14  Martin Liska  <mliska@suse.cz>

        Revert:
        2022-11-14  Martin Liska  <mliska@suse.cz>

        * Make-lang.in:
        Support installation if sphinx-build is missing.

2022-11-10  Marek Polacek  <polacek@redhat.com>

        * call.cc (std_pair_ref_ref_p): New.
        (do_warn_dangling_reference): Also warn when the function returns
        std::pair<const T&, const T&>.  Recurse into TARGET_EXPR_INITIAL.
        (maybe_warn_dangling_reference): Don't return early if we're
        initializing a std_pair_ref_ref_p.

2022-11-09  Jakub Jelinek  <jakub@redhat.com>

        * tree.cc (handle_carries_dependency_attribute): New function.
        (std_attribute_table): Add carries_dependency attribute.
        * parser.cc (cp_parser_check_std_attribute): Add carries_dependency
        attribute.

2022-11-09  Martin Liska  <mliska@suse.cz>

        * Make-lang.in:
        Support installation if sphinx-build is missing.

2022-11-09  Martin Liska  <mliska@suse.cz>

        * Make-lang.in: Support Sphinx based documentation.

2022-11-09  Marek Polacek  <polacek@redhat.com>

        PR c++/107363
        * semantics.cc (finish_call_expr): Suppress OPT_Wpessimizing_move.
        * typeck.cc (maybe_warn_pessimizing_move): Check warn_redundant_move
        and warning_suppressed_p.  Adjust a message depending on return_p.
        (check_return_expr): Don't suppress OPT_Wpessimizing_move here.

2022-11-08  Jason Merrill  <jason@redhat.com>
            Jakub Jelinek  <jakub@redhat.com>

        * cp-tree.h (fns_correspond): Declare.
        * decl.cc (fns_correspond): New.
        * call.cc (add_candidates): Look for op!= matching op==.
        (joust): Complain about non-standard reversed tiebreaker.
        (tourney): Fix champ_compared_to_predecessor logic.
        (build_new_op): Don't complain about error_mark_node not having
        'bool' type.
        * pt.cc (tsubst_copy_and_build): Don't try to be permissive
        when seen_error().

2022-11-06  Patrick Palka  <ppalka@redhat.com>

        * tree.cc (cxx_attribute_table): Include init_priority entry
        only if SUPPORTS_INIT_PRIORITY.
        (handle_init_priority_attribute): Add ATTRIBUTE_UNUSED.  Assert
        SUPPORTS_INIT_PRIORITY is true.

2022-11-04  Torbjörn SVENSSON  <torbjorn.svensson@foss.st.com>
            Yvan ROUX  <yvan.roux@foss.st.com>

        * mapper-client.cc: Use in-process client when networking is
        disabled.

2022-11-03  Marek Polacek  <polacek@redhat.com>

        PR c++/107488
        * call.cc (do_warn_dangling_reference): Quash -Wdangling-reference
        for member operator*.

2022-11-03  Patrick Palka  <ppalka@redhat.com>

        PR c++/107179
        * constraint.cc (tsubst_requires_expr): Make sure we're not
        deferring access checks.

2022-11-03  Jason Merrill  <jason@redhat.com>

        * parser.cc (cp_parser_template_declaration_after_parameters): Fix
        concept parsing below C++20.

2022-11-03  Patrick Palka  <ppalka@redhat.com>

        PR c++/93413
        * decl2.cc (mark_used): Don't defer synthesis of virtual
        functions.

2022-11-01  Nathan Sidwell  <nathan@acm.org>

        * cp-tree.h (LAMBDA_EXPR_SCOPE_SIG_DISCRIMINATOR): New.
        (struct tree_lambda_expr): Add discriminator_sig bitfield.
        (recrd_lambda_scope_sig_discriminator): Declare.
        * lambda.cc (struct lambda_sig_count): New.
        (lambda_discriminator): Add signature vector.
        (start_lambda_scope): Adjust.
        (compare_lambda_template_head, compare_lambda_sig): New.
        (record_lambda_scope_sig_discriminator): New.
        * mangle.cc (write_closure_type): Use the scope-sig discriminator for
        ABI >= 18.  Emit abi mangling warning if needed.
        * module.cc (trees_out::core_vals): Stream the new discriminator.
        (trees_in::core_vals): Likewise.
        * parser.cc (cp_parser_lambda_declarator_opt): Call
        record_lambda_scope_sig_discriminator.
        * pt.cc (tsubst_lambda_expr): Likewise.

2022-11-01  Nathan Sidwell  <nathan@acm.org>

        * cp-tree.h (LAMBDA_EXPR_DISCRIMINATOR): Rename to ...
        (LAMBDA_EXPR_SCOPE_ONLY_DISCRIMINATOR): ... here.
        (struct tree_lambda_expr): Make default_capture_mode &
        discriminator_scope bitfields.
        (record_null_lambda_scope) Delete.
        (record_lambda_scope_discriminator): Declare.
        * lambda.cc (struct lambda_discriminator): New struct.
        (lambda_scope, lambda_scope_stack): Adjust types.
        (lambda_count): Delete.
        (struct tree_int): Delete.
        (start_lambda_scope, finish_lambda_scope): Adjust.
        (record_lambda_scope): Only record the scope.
        (record_lambda_scope_discriminator): New.
        * mangle.cc (write_closure_type_name): Adjust.
        * module.cc (trees_out::core_vals): Likewise,
        (trees_in::core_vals): Likewise.
        * parser.cc (cp_parser_lambda_expression): Call
        record_lambda_scope_discriminator.
        * pt.cc (tsubst_lambda_expr): Adjust record_lambda_scope caling.  Call
        record_lambda_scope_discriminator. Commonize control flow on tsubsting
        the operator function.

2022-11-01  Jason Merrill  <jason@redhat.com>

        * parser.cc (make_call_declarator): Add std_attrs parm.
        (cp_parser_lambda_declarator_opt): Pass it.
        (cp_parser_direct_declarator): Pass it.

2022-11-01  Jason Merrill  <jason@redhat.com>

        * decl.cc (finish_function): Set TREE_NOTHROW later in the function.

2022-11-01  Jason Merrill  <jason@redhat.com>

        * decl.cc (duplicate_decls): Reformat loop.
        * parser.cc (cp_parser_member_declaration): Add newline.
        * semantics.cc: Remove newline.

2022-10-28  Marek Polacek  <polacek@redhat.com>

        * call.cc (maybe_warn_dangling_reference): Enable the warning in
        system headers if the decl isn't in a system header.

2022-10-28  Jason Merrill  <jason@redhat.com>

        * decl.cc (grokdeclarator): Call decl_attributes before do_friend.

2022-10-28  Jakub Jelinek  <jakub@redhat.com>

        * parser.cc (cp_parser_omp_all_clauses): Allow optional comma
        before the first clause even in pragma syntax.
        (cp_parser_omp_allocate, cp_parser_omp_atomic, cp_parser_omp_depobj,
        cp_parser_omp_flush, cp_parser_omp_scan_loop_body,
        cp_parser_omp_ordered, cp_parser_omp_assumption_clauses,
        cp_finish_omp_declare_variant, cp_parser_omp_declare_target,
        cp_parser_omp_declare_reduction_exprs, cp_parser_omp_requires,
        cp_parser_omp_error): Likewise.

2022-10-28  Joseph Myers  <joseph@codesourcery.com>

        PR c/61469
        * cp-tree.h (ENUM_FIXED_UNDERLYING_TYPE_P, ENUM_UNDERLYING_TYPE):
        Remove.  Moved to c-common.h.

2022-10-27  Jakub Jelinek  <jakub@redhat.com>

        PR c++/107379
        * name-lookup.cc (push_namespace): Call find_namespace_slot again
        after pushdecl as the hash table might be expanded during pushdecl.

2022-10-27  Nathan Sidwell  <nathan@acm.org>

        * mangle.cc (write_closure_template_head): New.
        (write_closure_type_name): Call it.

2022-10-27  Jakub Jelinek  <jakub@redhat.com>

        PR c++/107382
        PR c++/107383
        * typeck.cc (cp_build_binary_op): Don't compute semantic_result_type
        if result_type is NULL.

2022-10-26  Marek Polacek  <polacek@redhat.com>

        PR c++/106393
        * call.cc (expr_represents_temporary_p): New, factored out of...
        (conv_binds_ref_to_temporary): ...here.  Don't return false just
        because a ck_base is missing.  Use expr_represents_temporary_p.
        (do_warn_dangling_reference): New.
        (maybe_warn_dangling_reference): New.
        (extend_ref_init_temps): Call maybe_warn_dangling_reference.
        * cp-tree.h: Adjust comment.
        * typeck.cc (check_return_expr): Suppress -Wdangling-reference
        warnings.

2022-10-25  Nathan Sidwell  <nathan@acm.org>

        * parser.cc (synthesize_implicit_template_parm): Fix thinko about
        mark the new parm DECL_VIRTUAL_P.  Avoid unneccessary tree_last call.

2022-10-25  Patrick Palka  <ppalka@redhat.com>

        * constraint.cc (resolve_function_concept_overload): Explicitly
        pass complain=tf_none to coerce_template_parms.
        (resolve_concept_check): Likewise.
        (normalize_concept_check): Likewise.
        * cp-tree.h (coerce_template_parms): Declare the main overload
        and default its last parameter to true.  Remove wrapper overloads.
        * pt.cc (determine_specialization): Adjust calls to
        coerce_template_parms and coerce_innermost_template_parms after
        removing their last parameter.
        (coerce_template_args_for_ttp): Likewise.
        (coerce_ttp_args_for_tta): Likewise.
        (coerce_template_template_parms): Likewise.
        (coerce_template_parms): Remove use_default_args parameter and
        adjust function comment.  Document default argument.  Remove
        wrapper overloads.  No longer static.
        (coerce_innermost_template_parms): Remove use_default_args
        parameter.  Default require_all_args to true.
        (lookup_template_class): As with determine_specialization.
        (finish_template_variable): Likewise.
        (tsubst_decl): Likewise.
        (instantiate_alias_template): Likewise.
        (fn_type_unification): Likewise.
        (resolve_overloaded_unification): Likewise.
        (resolve_nondeduced_context): Likewise.
        (get_partial_spec_bindings): Likewise.

2022-10-25  Jason Merrill  <jason@redhat.com>

        * constexpr.cc (find_failing_clause_r): Re-add the call to
        contextual_conv_bool.

2022-10-25  Patrick Palka  <ppalka@redhat.com>

        PR c++/106848
        PR c++/102600
        * module.cc (trees_out::core_vals): Stream TYPE_MAX_VALUE and
        TYPE_MIN_VALUE of ENUMERAL_TYPE.
        (trees_in::core_vals): Likewise.
        (trees_out::write_enum_def): Don't stream them here.
        (trees_in::read_enum_def): Likewise.

2022-10-25  Jason Merrill  <jason@redhat.com>

        * constexpr.cc (class constexpr_global_ctx): Add modifiable field,
        get_value, get_value_ptr, put_value, remove_value, flush_modifiable
        member functions.
        (class modifiable_tracker): New.
        (cxx_eval_internal_function): Use it.
        (diagnose_failing_condition): Strip CLEANUP_POINT_EXPR.

2022-10-25  Jason Merrill  <jason@redhat.com>

        * constexpr.cc (fold_operand): New function.
        (find_failing_clause_r): Add const.
        (find_failing_clause): Add const.
        (diagnose_failing_condition): Add ctx parameter.
        (cxx_eval_internal_function): Pass it.
        * semantics.cc (diagnose_failing_condition): Move to constexpr.cc.
        * cp-tree.h: Adjust.

2022-10-24  Jason Merrill  <jason@redhat.com>

        * cp-gimplify.cc (fold_builtin_source_location)
        * vtable-class-hierarchy.cc (register_all_pairs): Simplify calls to
        build_string_literal.
        (build_string_from_id): Remove.

2022-10-24  Marek Polacek  <polacek@redhat.com>

        PR c++/107276
        * typeck.cc (treat_lvalue_as_rvalue_p): Check the return value of move.

2022-10-24  Jakub Jelinek  <jakub@redhat.com>

        PR c++/107358
        * typeck.cc (cp_build_binary_op): Pass operands before excess precision
        promotions to scalar_to_vector call.

2022-10-24  Jakub Jelinek  <jakub@redhat.com>

        PR c++/105774
        * constexpr.cc (cxx_eval_increment_expression): For signed types
        that promote to int, evaluate PLUS_EXPR or MINUS_EXPR in int type.

2022-10-24  Arsen Arsenović  <arsen@aarsen.me>

        * cp-tree.h (DECL_MAIN_P): Move most logic, besides the hosted
        check, from here...
        (DECL_MAIN_ANY_P): ... to here, so that it can be reused ...
        (DECL_MAIN_FREESTANDING_P): ... here, with an additional
        constraint on (hosted OR return type == int)
        * decl.cc (finish_function): Use DECL_MAIN_FREESTANDING_P
        instead of DECL_MAIN_P, to loosen the hosted requirement, but
        check noreturn, before adding implicit returns.

2022-10-21  Jakub Jelinek  <jakub@redhat.com>

        PR c++/107295
        * constexpr.cc (reduced_constant_expression_p) <case CONSTRUCTOR>:
        Return false for VECTOR_TYPE CONSTRUCTORs even without
        CONSTRUCTOR_NO_CLEARING set on them.
        (cxx_eval_bare_aggregate): If constant but !changed, fold before
        returning VECTOR_TYPE_P CONSTRUCTOR.
        (cxx_eval_constant_expression) <case CONSTRUCTOR>: Don't fold
        TREE_CONSTANT CONSTRUCTOR, just return it.

2022-10-21  Jakub Jelinek  <jakub@redhat.com>

        PR c++/106863
        * semantics.cc (finish_compound_literal): For void{}, if
        processing_template_decl return a COMPOUND_LITERAL_P
        CONSTRUCTOR rather than void_node.

2022-10-20  Patrick Palka  <ppalka@redhat.com>

        * pt.cc (lookup_and_finish_template_variable): Don't
        instantiate if the template's scope is dependent.
        (tsubst_copy) <case TEMPLATE_DECL>: Pass entering_scope=true
        when substituting the class scope.

2022-10-20  Patrick Palka  <ppalka@redhat.com>

        PR c++/102963
        * module.cc (node_template_info): Handle CONCEPT_DECL.

2022-10-20  Jonathan Wakely   <jwakely@redhat.com>
            Ulrich Drepper  <drepper@redhat.com>

        * Make-lang.in: Add rules to generate std-name-hint.gperf.  Adjust
        rule to generate std-name-hint.h to allow chain rule.
        * std-name-hint.h: Regenerated.
        * std-name-hint.gperf: This file is now generated.
        * cxxapi-data.csv: New file.  CSV file with C++ API data.
        * gen-cxxapi-file.py: New file.  Generate std-name-hint.gperf
        and module export source (in future).

2022-10-19  Marek Polacek  <polacek@redhat.com>

        PR c++/85043
        * typeck.cc (maybe_warn_about_useless_cast): Don't warn when
        a glvalue is cast to a non-reference type.

2022-10-18  Patrick Palka  <ppalka@redhat.com>

        PR c++/105045
        * module.cc (trees_out::tpl_parms_fini): Don't assume default
        template arguments must be trailing.
        (trees_in::tpl_parms_fini): Likewise.

2022-10-18  Jakub Jelinek  <jakub@redhat.com>

        PR c++/106654
        * cp-tree.h (build_assume_call): Declare.
        * parser.cc (cp_parser_omp_assumption_clauses): Use build_assume_call.
        * cp-gimplify.cc (build_assume_call): New function.
        (process_stmt_assume_attribute): Use build_assume_call.
        * pt.cc (tsubst_copy_and_build): Likewise.

2022-10-17  Patrick Palka  <ppalka@redhat.com>

        PR c++/101449
        * module.cc (trees_out::write_function_def): Stream the
        parms and result of the constexpr_fundef entry.
        (trees_in::read_function_def): Likewise.

2022-10-14  Patrick Palka  <ppalka@redhat.com>

        PR c++/106304
        * constexpr.cc (cxx_dynamic_cast_fn_p): Check for abi_node
        instead of global_namespace.
        * rtti.cc (build_dynamic_cast_1): Set DECL_CONTEXT and
        DECL_SOURCE_LOCATION when building dynamic_cast_node.  Push
        it into the namespace.

2022-10-14  Jakub Jelinek  <jakub@redhat.com>

        * cp-tree.h (extended_float_type_p): Return true for
        bfloat16_type_node.
        * typeck.cc (cp_compare_floating_point_conversion_ranks): Set
        extended{1,2} if mv{1,2} is bfloat16_type_node.  Adjust comment.

2022-10-14  Jakub Jelinek  <jakub@redhat.com>

        PR c/82071
        PR c/87390
        PR c++/107097
        * cp-tree.h (cp_ep_convert_and_check): Remove.
        * cvt.cc (cp_ep_convert_and_check): Remove.
        * call.cc (build_conditional_expr): Use excess precision for ?: with
        one arm floating and another integral.  Don't convert first to
        semantic result type from integral types.
        (convert_like_internal): Don't call cp_ep_convert_and_check, instead
        just strip EXCESS_PRECISION_EXPR before calling cp_convert_and_check
        or cp_convert.
        * typeck.cc (cp_build_binary_op): Set may_need_excess_precision
        for comparisons or SPACESHIP_EXPR with at least one operand integral.
        Don't compute semantic_result_type if build_type is non-NULL.  Call
        cp_convert_and_check instead of cp_ep_convert_and_check.

2022-10-14  Jakub Jelinek  <jakub@redhat.com>

        PR middle-end/323
        PR c++/107097
        * parser.cc (cp_parser_primary_expression): Handle
        EXCESS_PRECISION_EXPR with REAL_CST operand the same as REAL_CST.
        * cvt.cc (cp_ep_convert_and_check): New function.
        * call.cc (build_conditional_expr): Add excess precision support.
        When type_after_usual_arithmetic_conversions returns error_mark_node,
        use gcc_checking_assert that it is because of uncomparable floating
        point ranks instead of checking all those conditions and make it
        work also with complex types.
        (convert_like_internal): Likewise.  Add NESTED_P argument, pass true
        to recursive calls to convert_like.
        (convert_like): Add NESTED_P argument, pass it through to
        convert_like_internal.  For other overload pass false to it.
        (convert_like_with_context): Pass false to NESTED_P.
        (convert_arg_to_ellipsis): Add excess precision support.
        (magic_varargs_p): For __builtin_is{finite,inf,inf_sign,nan,normal}
        and __builtin_fpclassify return 2 instead of 1, document what it
        means.
        (build_over_call): Don't handle former magic 2 which is no longer
        used, instead for magic 1 remove EXCESS_PRECISION_EXPR.
        (perform_direct_initialization_if_possible): Pass false to NESTED_P
        convert_like argument.
        * constexpr.cc (cxx_eval_constant_expression): Handle
        EXCESS_PRECISION_EXPR.
        (potential_constant_expression_1): Likewise.
        * pt.cc (tsubst_copy, tsubst_copy_and_build): Likewise.
        * cp-tree.h (cp_ep_convert_and_check): Declare.
        * cp-gimplify.cc (cp_fold): Handle EXCESS_PRECISION_EXPR.
        * typeck.cc (cp_common_type): For COMPLEX_TYPEs, return error_mark_node
        if recursive call returned it.
        (convert_arguments): For magic 1 remove EXCESS_PRECISION_EXPR.
        (cp_build_binary_op): Add excess precision support.  When
        cp_common_type returns error_mark_node, use gcc_checking_assert that
        it is because of uncomparable floating point ranks instead of checking
        all those conditions and make it work also with complex types.
        (cp_build_unary_op): Likewise.
        (cp_build_compound_expr): Likewise.
        (build_static_cast_1): Remove EXCESS_PRECISION_EXPR.

2022-10-13  Jason Merrill  <jason@redhat.com>

        * cp-tree.h: Fix whitespace.
        * parser.h: Fix whitespace.
        * decl.cc: Fix whitespace.
        * parser.cc: Fix whitespace.
        * pt.cc: Fix whitespace.

2022-10-13  Martin Liska  <mliska@suse.cz>

        * vtable-class-hierarchy.cc (vtv_generate_init_routine): Emit
        an artificial variable that would be put into .preinit_array
        section.

2022-10-13  Marek Polacek  <polacek@redhat.com>

        PR c++/106925
        * except.cc (maybe_splice_retval_cleanup): Check current_function_decl.
        Make the bool const.

2022-10-12  Marek Polacek  <polacek@redhat.com>

        * call.cc (standard_conversion): Remove LOOKUP_PREFER_RVALUE code.
        (reference_binding): Honor clk_implicit_rval even pre-C++20.
        (implicit_conversion_1): Remove LOOKUP_PREFER_RVALUE code.
        (build_user_type_conversion_1): Likewise.
        (convert_like_internal): Likewise.
        (build_over_call): Likewise.
        * cp-tree.h (LOOKUP_PREFER_RVALUE): Remove.
        (LOOKUP_NO_NARROWING): Adjust definition.
        * except.cc (build_throw): Don't perform two overload resolutions.
        * typeck.cc (maybe_warn_pessimizing_move): Don't use
        LOOKUP_PREFER_RVALUE.
        (check_return_expr): Don't perform two overload resolutions.

2022-10-12  Jason Merrill  <jason@redhat.com>

        DR 2631
        * cp-tree.h (source_location_current_p): Remove.
        * name-lookup.h (struct cp_binding_level): Remove
        immediate_fn_ctx_p.
        * call.cc (in_immediate_context): All default args
        and DMI are potentially immediate context.
        (immediate_invocation_p): Don't treat source_location specially.
        (struct in_consteval_if_p_temp_override): Move to cp-tree.h.
        * constexpr.cc (get_nth_callarg): Move to cp-tree.h.
        * cp-gimplify.cc (cp_fold_r): Don't fold consteval.
        * name-lookup.cc (begin_scope): Don't set immediate_fn_ctx_p.
        * parser.cc (cp_parser_lambda_declarator_opt): Likewise.
        (cp_parser_direct_declarator): Likewise.
        * pt.cc (tsubst_default_argument): Open sk_function_parms level.
        * tree.cc (source_location_current_p): Remove.
        (bot_replace): Fold consteval here.
        (break_out_target_exprs): Handle errors.

2022-10-11  Patrick Palka  <ppalka@redhat.com>

        PR c++/100134
        * pt.cc (tsubst_friend_function): Propagate DECL_MODULE_PURVIEW_P
        from the introduced namespace-scope function to the namespace.

2022-10-11  Patrick Palka  <ppalka@redhat.com>

        PR c++/99377
        * module.cc (lazy_load_binding): Clear processing_template_decl.
        (lazy_load_pendings): Likewise.

2022-10-10  Nathan Sidwell  <nathan@acm.org>

        * mangle.cc (write_prefix): Add VAR_DECL & FIELD_DECL to
        substitution table under abi=18.  Note possible mismatch.

2022-10-10  Marek Polacek  <polacek@redhat.com>

        PR c++/106937
        * error.cc: Include "attribs.h".
        (dump_type_prefix): Print only GNU attributes here.
        (dump_type_suffix): Print standard attributes here.

2022-10-08  Jason Merrill  <jason@redhat.com>

        * cp-tree.h (TARGET_EXPR_ELIDING_P): New.
        (unsafe_copy_elision_p, set_target_expr_eliding)
        (cp_build_init_expr): Declare.
        * call.cc (unsafe_copy_elision_p): No longer static.
        (build_over_call, build_special_member_call)
        (build_new_method_call): Use cp_build_init_expr.
        * coroutines.cc (expand_one_await_expression)
        (build_actor_fn, flatten_await_stmt, handle_nested_conditionals)
        (await_statement_walker, morph_fn_to_coro): Use cp_build_init_expr.
        * cp-gimplify.cc (cp_gimplify_init_expr)
        (cp_gimplify_expr): Check TARGET_EXPR_ELIDING_P.
        (cp_fold_r): Propagate it.
        (cp_fold): Use cp_build_init_expr.
        * decl.cc (check_initializer): Use cp_build_init_expr.
        * except.cc (build_throw): Use cp_build_init_expr.
        * init.cc (get_nsdmi): Call set_target_expr_eliding.
        (perform_member_init, expand_default_init, expand_aggr_init_1)
        (build_new_1, build_vec_init): Use cp_build_init_expr.
        * method.cc (do_build_copy_constructor): Use cp_build_init_expr.
        * semantics.cc (simplify_aggr_init_expr, finalize_nrv_r)
        (finish_omp_reduction_clause): Use cp_build_init_expr.
        * tree.cc (build_target_expr): Call set_target_expr_eliding.
        (bot_manip): Copy TARGET_EXPR_ELIDING_P.
        * typeck.cc (cp_build_modify_expr): Call set_target_expr_eliding.
        (check_return_expr): Use cp_build_modify_expr.
        * typeck2.cc (split_nonconstant_init_1)
        (split_nonconstant_init): Use cp_build_init_expr.
        (massage_init_elt): Call set_target_expr_eliding.
        (process_init_constructor_record): Clear TARGET_EXPR_ELIDING_P on
        unsafe copy elision.
        (set_target_expr_eliding, cp_build_init_expr): New.

2022-10-07  Marek Polacek  <polacek@redhat.com>

        PR c++/107085
        * call.cc (conv_binds_ref_to_temporary): New.
        (ref_conv_binds_directly): Rename to...
        (ref_conv_binds_to_temporary): ...this.  Use
        conv_binds_ref_to_temporary.
        * cp-tree.h (ref_conv_binds_directly): Rename to...
        (ref_conv_binds_to_temporary): ...this.
        * method.cc (ref_xes_from_temporary): Use ref_conv_binds_to_temporary.
        * parser.cc (warn_for_range_copy): Likewise.

2022-10-07  Qing Zhao  <qing.zhao@oracle.com>

        * module.cc (trees_out::core_bools): Stream out new bit
        decl_not_flexarray.
        (trees_in::core_bools): Stream in new bit decl_not_flexarray.

2022-10-07  Patrick Palka  <ppalka@redhat.com>

        * module.cc (trees_out::mark_class_def): Guard against
        DECL_BIT_FIELD_REPRESENTATIVE not being a decl.

2022-10-07  Jason Merrill  <jason@redhat.com>

        * init.cc (expand_default_init): Also push the INIT_EXPR inside a
        CLEANUP_POINT_EXPR.

2022-10-07  Patrick Palka  <ppalka@redhat.com>

        PR c++/104433
        * module.cc (trees_out::core_bools): Don't override
        DECL_EXTERNAL to true for static variables from an inline
        function.

2022-10-07  Martin Liska  <mliska@suse.cz>

        * module.cc (enum module_state_counts): Use array size.
        * name-lookup.cc (class namespace_limit_reached): Likewise.
        (class module_state): Move up in the file.

2022-10-07  Jakub Jelinek  <jakub@redhat.com>

        * parser.cc (cp_parser_check_std_attribute): Only do checks if
        attribute is a standard attribute or in gnu namespace and only
        lookup other attributes in those namespaces.
        * cp-gimplify.cc (lookup_hotness_attribute): Adjust function comment.
        Only return true for standard attribute or gnu namespace attribute.
        (remove_hotness_attribute): Only remove hotness attributes when
        they are standard or in gnu namespace, implement it in a single
        loop rather than former 4 now 8 remove_attribute calls.

2022-10-06  Jason Merrill  <jason@redhat.com>

        * coroutines.cc (expand_one_await_expression): Change conversion
        to VIEW_CONVERT_EXPR.
        * cp-gimplify.cc (cp_genericize_r) [CONVERT_EXPR]: Add assert.

2022-10-06  Joseph Myers  <joseph@codesourcery.com>

        * lex.cc (init_reswords): Handle D_EXT11.

2022-10-06  Patrick Palka  <ppalka@redhat.com>

        * pt.cc (optimize_specialization_lookup_p): Remove.
        (retrieve_specialization): Assume the above returns false
        and simplify accordingly.
        (register_specialization): Likewise.

2022-10-06  Jakub Jelinek  <jakub@redhat.com>

        * parser.cc (cp_parser_omp_assumption_clauses): Emit IFN_ASSUME
        call for holds clause on assume construct.

2022-10-06  Jakub Jelinek  <jakub@redhat.com>

        PR c++/106654
        * cp-tree.h (process_stmt_assume_attribute): Implement C++23
        P1774R8 - Portable assumptions.  Declare.
        (diagnose_failing_condition): Declare.
        (find_failing_clause): Likewise.
        * parser.cc (assume_attr): New enumerator.
        (cp_parser_parenthesized_expression_list): Handle assume_attr.
        Remove identifier variable, for id_attr push the identifier into
        expression_list right away instead of inserting it before all the
        others at the end.
        (cp_parser_conditional_expression): New function.
        (cp_parser_constant_expression): Use it.
        (cp_parser_statement): Handle assume attribute.
        (cp_parser_expression_statement): Likewise.
        (cp_parser_gnu_attribute_list): Use assume_attr for assume
        attribute.
        (cp_parser_std_attribute): Likewise.  Handle standard assume
        attribute like gnu::assume.
        * cp-gimplify.cc (process_stmt_assume_attribute): New function.
        * constexpr.cc: Include fold-const.h.
        (find_failing_clause_r, find_failing_clause): New functions,
        moved from semantics.cc with ctx argument added and if non-NULL,
        call cxx_eval_constant_expression rather than fold_non_dependent_expr.
        (cxx_eval_internal_function): Handle IFN_ASSUME.
        (potential_constant_expression_1): Likewise.
        * pt.cc (tsubst_copy_and_build): Likewise.
        * semantics.cc (diagnose_failing_condition): New function.
        (find_failing_clause_r, find_failing_clause): Moved to constexpr.cc.
        (finish_static_assert): Use it.  Add auto_diagnostic_group.

2022-10-05  Jason Merrill  <jason@redhat.com>

        * tree.cc (lvalue_kind) [VIEW_CONVERT_EXPR]: Change prvalue to
        xvalue.

2022-10-04  Jason Merrill  <jason@redhat.com>

        PR c++/107154
        * cp-gimplify.cc (cp_genericize_init_expr): Use iloc_sentinel.
        (cp_genericize_target_expr): Likewise.

2022-10-04  Patrick Palka  <ppalka@redhat.com>

        PR c++/107136
        * Make-lang.in (CP_PLUGIN_HEADERS): Add cp-trait.def.

2022-10-04  Jakub Jelinek  <jakub@redhat.com>

        * cp-tree.h (struct omp_declare_target_attr): Rename to ...
        (cp_omp_declare_target_attr): ... this.  Add device_type member.
        (omp_begin_assumes_data): Rename to ...
        (cp_omp_begin_assumes_data): ... this.
        (struct saved_scope): Change types of omp_declare_target_attribute
        and omp_begin_assumes.
        * parser.cc (cp_parser_omp_clause_device_type): Uncomment
        check_no_duplicate_clause call.
        (cp_parser_omp_all_clauses): Fix up pasto, c_name for OMP_CLAUSE_LINK
        should be "link" rather than "to".
        (cp_parser_omp_declare_target): Adjust for omp_declare_target_attr
        to cp_omp_declare_target_attr changes, push -1 as device_type.  Use
        error_at rather than warning_at for declare target with only
        device_type clauses.
        (OMP_BEGIN_DECLARE_TARGET_CLAUSE_MASK): Define.
        (cp_parser_omp_begin): Add begin declare target support.  Adjust
        for omp_begin_assumes_data to cp_omp_begin_assumes_data change.
        (cp_parser_omp_end): Adjust for the
        omp_declare_target_attr to cp_omp_declare_target_attr and
        omp_begin_assumes_data to cp_omp_begin_assumes_data type changes,
        adjust diagnostics wording and simplify format strings for easier
        translations.
        * semantics.cc (finish_translation_unit): Likewise.
        * decl2.cc (cplus_decl_attributes): If device_type was present on
        begin declare target, add "omp declare target host" and/or
        "omp declare target nohost" attributes.

2022-10-03  Jakub Jelinek  <jakub@redhat.com>

        * cp-tree.h (BCS_STMT_EXPR): New enumerator.
        * name-lookup.h (enum scope_kind): Add sk_stmt_expr.
        * name-lookup.cc (begin_scope): Handle sk_stmt_expr like sk_block.
        * semantics.cc (begin_compound_stmt): For BCS_STMT_EXPR use
        sk_stmt_expr.
        * parser.cc (cp_parser_statement_expr): Use BCS_STMT_EXPR instead of
        BCS_NORMAL.
        * decl.cc (struct named_label_entry): Add in_stmt_expr.
        (poplevel_named_label_1): Handle sk_stmt_expr.
        (check_previous_goto_1): Diagnose entering of statement expression.
        (check_goto): Likewise.

2022-10-03  Patrick Palka  <ppalka@redhat.com>

        * constraint.cc (diagnose_trait_expr): Use CPTK_IS_SAME instead
        of CPTK_IS_SAME_AS.
        * cp-trait.def (IS_SAME_AS): Rename to ...
        (IS_SAME): ... this.
        * pt.cc (alias_ctad_tweaks): Use CPTK_IS_SAME instead of
        CPTK_IS_SAME_AS.
        * semantics.cc (trait_expr_value): Likewise.
        (finish_trait_expr): Likewise.

2022-10-01  Patrick Palka  <ppalka@redhat.com>

        * semantics.cc (trait_expr_value): Make cp_trait_kind switch
        statement exhaustive.
        (finish_trait_expr): Likewise.
        (finish_trait_type): Likewise.

2022-10-01  Jason Merrill  <jason@redhat.com>

        * init.cc (build_vec_init): Clear from_array for CONSTRUCTOR
        initializer.

2022-10-01  Jason Merrill  <jason@redhat.com>

        * cp-gimplify.cc (cp_genericize_init): Also convert the result of
        split_nonconstant_init to void.

2022-09-30  Patrick Palka  <ppalka@redhat.com>

        * constraint.cc (diagnose_trait_expr): Likewise.
        * cp-objcp-common.cc (names_builtin_p): Likewise.
        * cp-tree.h (enum cp_trait_kind): Likewise.
        * cxx-pretty-print.cc (pp_cxx_trait): Likewise.
        * parser.cc (cp_keyword_starts_decl_specifier_p): Likewise.
        (cp_parser_primary_expression): Likewise.
        (cp_parser_trait): Likewise.
        (cp_parser_simple_type_specifier): Likewise.
        * cp-trait.def: New file.

2022-09-30  Jason Merrill  <jason@redhat.com>

        * cp-gimplify.cc (cp_fold_r) [TARGET_EXPR]: Collapse
        TARGET_EXPR within TARGET_EXPR.
        * constexpr.cc (cxx_eval_outermost_constant_expr): Avoid
        adding redundant TARGET_EXPR.
        * cp-tree.h (target_expr_needs_replace): VEC_INIT_EXPR doesn't.

2022-09-29  Patrick Palka  <ppalka@redhat.com>

        PR c++/102576
        * pt.cc (listify): Use lookup_qualified_name instead of
        get_namespace_binding.

2022-09-29  Jason Merrill  <jason@redhat.com>

        * class.cc (check_methods): Call constraints_satisfied_p.

2022-09-29  Jason Merrill  <jason@redhat.com>

        * constexpr.cc (potential_constant_expression_1): Look into
        DECL_INITIAL.  Use location wrappers.

2022-09-29  Jason Merrill  <jason@redhat.com>

        PR c++/93046
        * call.cc (build_conditional_expr): For a?:c extension, treat
        a reused class prvalue as an xvalue.

2022-09-29  Jason Merrill  <jason@redhat.com>

        * call.cc (build_conditional_expr): Set TARGET_EXPR_NO_ELIDE on the
        outer TARGET_EXPR.

2022-09-29  Patrick Palka  <ppalka@redhat.com>

        * constraint.cc (diagnose_trait_expr): Handle CPTK_REMOVE_CV,
        CPTK_REMOVE_REFERENCE and CPTK_REMOVE_CVREF.
        * cp-objcp-common.cc (names_builtin_p): Likewise.
        * cp-tree.h (enum cp_trait_kind): Add CPTK_REMOVE_CV,
        CPTK_REMOVE_REFERENCE and CPTK_REMOVE_CVREF.
        * cxx-pretty-print.cc (pp_cxx_trait): Handle CPTK_REMOVE_CV,
        CPTK_REMOVE_REFERENCE and CPTK_REMOVE_CVREF.
        * parser.cc (cp_keyword_starts_decl_specifier_p): Return true
        for RID_REMOVE_CV, RID_REMOVE_REFERENCE and RID_REMOVE_CVREF.
        (cp_parser_trait): Handle RID_REMOVE_CV, RID_REMOVE_REFERENCE
        and RID_REMOVE_CVREF.
        (cp_parser_simple_type_specifier): Likewise.
        * semantics.cc (finish_trait_type): Likewise.

2022-09-29  Patrick Palka  <ppalka@redhat.com>

        * cp-objcp-common.cc (cp_common_init_ts): Replace
        UNDERLYING_TYPE with TRAIT_TYPE.
        * cp-tree.def (TRAIT_TYPE): Define.
        (UNDERLYING_TYPE): Remove.
        * cp-tree.h (TRAIT_TYPE_KIND_RAW): Define.
        (TRAIT_TYPE_KIND): Define.
        (TRAIT_TYPE_TYPE1): Define.
        (TRAIT_TYPE_TYPE2): Define.
        (WILDCARD_TYPE_P): Return true for TRAIT_TYPE.
        (finish_trait_type): Declare.
        * cxx-pretty-print.cc (cxx_pretty_printer::primary_expression):
        Adjust after renaming pp_cxx_trait_expression.
        (cxx_pretty_printer::simple_type_specifier) <case TRAIT_TYPE>:
        New.
        (cxx_pretty_printer::type_id): Replace UNDERLYING_TYPE with
        TRAIT_TYPE.
        (pp_cxx_trait_expression): Rename to ...
        (pp_cxx_trait): ... this.  Handle TRAIT_TYPE as well.  Correct
        pretty printing of the trailing arguments.
        * cxx-pretty-print.h (pp_cxx_trait_expression): Rename to ...
        (pp_cxx_trait_type): ... this.
        * error.cc (dump_type) <case UNDERLYING_TYPE>: Remove.
        <case TRAIT_TYPE>: New.
        (dump_type_prefix): Replace UNDERLYING_WITH with TRAIT_TYPE.
        (dump_type_suffix): Likewise.
        * mangle.cc (write_type) <case UNDERLYING_TYPE>: Remove.
        <case TRAIT_TYPE>: New.
        * module.cc (trees_out::type_node) <case UNDERLYING_TYPE>:
        Remove.
        <case TRAIT_TYPE>: New.
        (trees_in::tree_node): Likewise.
        * parser.cc (cp_parser_primary_expression): Adjust after
        renaming cp_parser_trait_expr.
        (cp_parser_trait_expr): Rename to ...
        (cp_parser_trait): ... this.  Call finish_trait_type for traits
        that yield a type.
        (cp_parser_simple_type_specifier): Adjust after renaming
        cp_parser_trait_expr.
        * pt.cc (for_each_template_parm_r) <case UNDERLYING_TYPE>:
        Remove.
        <case TRAIT_TYPE>: New.
        (tsubst): Likewise.
        (unify): Replace UNDERLYING_TYPE with TRAIT_TYPE.
        (dependent_type_p_r): Likewise.
        * semantics.cc (finish_underlying_type): Don't return
        UNDERLYING_TYPE anymore when processing_template_decl.
        (finish_trait_type): Define.
        * tree.cc (strip_typedefs) <case UNDERLYING_TYPE>: Remove.
        <case TRAIT_TYPE>: New.
        (cp_walk_subtrees): Likewise.
        * typeck.cc (structural_comptypes): Likewise.

2022-09-29  Nathan Sidwell  <nathan@acm.org>

        PR c++/100616
        * module.cc (enum tree_tag): Add tt_nttp_var.
        (trees_out::decl_node): Handle NTTP objects.
        (trees_in::tree_node): Handle tt_nttp_var.
        (depset::hash::add_binding_entry): Skip NTTP objects.

2022-09-28  Eugene Rozenfeld  <erozen@microsoft.com>

        * module.cc (write_location): Write discriminator.
        (read_location): Read discriminator.

2022-09-28  Nathan Sidwell  <nathan@acm.org>

        * cp-tree.h (DECL_NTTP_OBJECT_P): New.
        (template_parm_object_p): Delete.
        (build_template_parm_object): Declare.
        * cxx-pretty-print.cc (pp_cx_template_argument_list): Use DECL_NTTP_OBJECT_P.
        * error.cc (dump_simple_decl): Likewise.
        * mangle.cc (write_template_arg): Likewise.
        * pt.cc (template_parm_object_p): Delete.
        (create_template_parm_object): Separated out checking from ...
        (get_template_parm_object): ... this, new external entry point.

2022-09-27  Marek Polacek  <polacek@redhat.com>

        PR c++/101165
        PR c++/106882
        * call.cc (reference_binding): Check clk_implicit_rval in C++20 only.
        * cp-tree.h (unparenthesized_id_or_class_member_access_p): Declare.
        * pt.cc (unparenthesized_id_or_class_member_access_p): New function,
        broken out of...
        (do_auto_deduction): ...here.  Use it.  In C++23, maybe call
        treat_lvalue_as_rvalue_p.
        * tree.cc (xvalue_p): Check & clk_rvalueref, not == clk_rvalueref.
        * typeck.cc (check_return_expr): Allow implicit move for functions
        returning a reference as well, or when the return value type is not
        a scalar type.

2022-09-27  Marek Polacek  <polacek@redhat.com>

        * constraint.cc (diagnose_trait_expr): Say "nothrow" without quotes
        rather than in quotes.

2022-09-27  Jonathan Wakely  <jwakely@redhat.com>

        PR c++/107049
        * method.cc (is_convertible_helper): Use access check sentinel.

2022-09-27  Jakub Jelinek  <jakub@redhat.com>

        PR c++/106651
        * cp-tree.h (LAMBDA_EXPR_STATIC_P): Implement C++23
        P1169R4 - static operator().  Define.
        * parser.cc (CP_PARSER_FLAGS_ONLY_MUTABLE_OR_CONSTEXPR): Document
        that it also allows static.
        (cp_parser_lambda_declarator_opt): Handle static lambda specifier.
        (cp_parser_decl_specifier_seq): Allow RID_STATIC for
        CP_PARSER_FLAGS_ONLY_MUTABLE_OR_CONSTEXPR.
        * decl.cc (grok_op_properties): If operator() isn't a method,
        use a different error wording, if it is static member function,
        allow it (for C++20 and older with a pedwarn unless it is
        a lambda function or template instantiation).
        * call.cc (joust): Don't ICE if one candidate is static member
        function and the other is an indirect call.  If the parameter
        conversion on the other candidate is user defined conversion,
        ellipsis or bad conversion, make static member function candidate
        a winner for that parameter.
        * lambda.cc (maybe_add_lambda_conv_op): Handle static lambdas.
        * error.cc (dump_lambda_function): Print static for static lambdas.

2022-09-27  Jakub Jelinek  <jakub@redhat.com>

        * cp-tree.h (struct omp_begin_assumes_data): New type.
        (struct saved_scope): Add omp_begin_assumes member.
        * parser.cc: Include bitmap.h.
        (cp_parser_omp_assumption_clauses, cp_parser_omp_assume,
        cp_parser_omp_assumes, cp_parser_omp_begin): New functions.
        (cp_parser_omp_end_declare_target): Rename to ...
        (cp_parser_omp_end): ... this.  Handle also end assumes.
        (cp_parser_omp_construct): Handle PRAGMA_OMP_ASSUME.
        (cp_parser_pragma): Handle PRAGMA_OMP_ASSUME, PRAGMA_OMP_ASSUMES
        and PRAGMA_OMP_BEGIN.  Handle PRAGMA_OMP_END rather than
        PRAGMA_OMP_END_DECLARE_TARGET and call cp_parser_omp_end
        for it rather than cp_parser_omp_end_declare_target.
        * pt.cc (apply_late_template_attributes): Also temporarily clear
        omp_begin_assumes.
        * semantics.cc (finish_translation_unit): Also diagnose
        #pragma omp begin assumes without corresponding
        #pragma omp end assumes.

2022-09-27  Jakub Jelinek  <jakub@redhat.com>

        * parser.cc (cp_parser_lambda_declarator_opt): Don't diagnose
        conflicting specifiers here.
        (cp_storage_class_name): New variable.
        (cp_parser_decl_specifier_seq): When setting conflicting_specifiers_p
        for the first time, diagnose which exact specifiers conflict.
        (cp_parser_set_storage_class): Likewise.  Move storage_class
        computation earlier.
        * decl.cc (grokdeclarator): Don't diagnose conflicting specifiers
        here, just return error_mark_node.

2022-09-27  Jakub Jelinek  <jakub@redhat.com>

        PR c++/106652
        PR c++/85518
        * cp-tree.h (cp_compare_floating_point_conversion_ranks): Implement
        P1467R9 - Extended floating-point types and standard names except
        for std::bfloat16_t for now.  Declare.
        (extended_float_type_p): New inline function.
        * mangle.cc (write_builtin_type): Mangle float{16,32,64,128}_type_node
        as DF{16,32,64,128}_.  Mangle float{32,64,128}x_type_node as
        DF{32,64,128}x.  Remove FIXED_POINT_TYPE mangling that conflicts
        with that.
        * typeck2.cc (check_narrowing): If one of ftype or type is extended
        floating-point type, compare floating-point conversion ranks.
        * parser.cc (cp_keyword_starts_decl_specifier_p): Handle
        CASE_RID_FLOATN_NX.
        (cp_parser_simple_type_specifier): Likewise and diagnose missing
        _Float<N> or _Float<N>x support if not supported by target.
        * typeck.cc (cp_compare_floating_point_conversion_ranks): New function.
        (cp_common_type): If both types are REAL_TYPE and one or both are
        extended floating-point types, select common type based on comparison
        of floating-point conversion ranks and subranks.
        (cp_build_binary_op): Diagnose operation with floating point arguments
        with unordered conversion ranks.
        * call.cc (standard_conversion): For floating-point conversion, if
        either from or to are extended floating-point types, set conv->bad_p
        for implicit conversion from larger to smaller conversion rank or
        with unordered conversion ranks.
        (convert_like_internal): Emit a pedwarn on such conversions.
        (build_conditional_expr): Diagnose operation with floating point
        arguments with unordered conversion ranks.
        (convert_arg_to_ellipsis): Don't promote extended floating-point types
        narrower than double to double.
        (compare_ics): Implement P1467R9 [over.ics.rank]/4 changes.

2022-09-26  Marek Polacek  <polacek@redhat.com>

        PR c++/106656
        * typeck2.cc (array_string_literal_compatible_p): Allow
        initializing arrays of char or unsigned char by a UTF-8 string literal.

2022-09-26  Marek Polacek  <polacek@redhat.com>

        PR c++/106784
        * method.cc (is_convertible_helper): New.
        (is_convertible): Use it.
        (is_nothrow_convertible): Likewise.

2022-09-26  Patrick Palka  <ppalka@redhat.com>

        PR c++/107033
        * module.cc (trees_in::decl_value): In the MK_partial case for
        a variable template partial specialization, pass decl_p=true to
        add_mergeable_specialization, and set spec to the VAR_DECL not
        the TEMPLATE_DECL.
        * pt.cc (add_mergeable_specialization): For a variable template
        partial specialization, set the TREE_TYPE of the new
        DECL_TEMPLATE_SPECIALIZATIONS node to the TREE_TYPE of the
        VAR_DECL not the VAR_DECL itself.

2022-09-23  Marek Polacek  <polacek@redhat.com>

        PR c++/106784
        * constraint.cc (diagnose_trait_expr): Handle CPTK_IS_CONVERTIBLE
        and CPTK_IS_NOTHROW_CONVERTIBLE.
        * cp-objcp-common.cc (names_builtin_p): Handle RID_IS_CONVERTIBLE
        RID_IS_NOTHROW_CONVERTIBLE.
        * cp-tree.h (enum cp_trait_kind): Add CPTK_IS_CONVERTIBLE and
        CPTK_IS_NOTHROW_CONVERTIBLE.
        (is_convertible): Declare.
        (is_nothrow_convertible): Likewise.
        * cxx-pretty-print.cc (pp_cxx_trait_expression): Handle
        CPTK_IS_CONVERTIBLE and CPTK_IS_NOTHROW_CONVERTIBLE.
        * method.cc (is_convertible): New.
        (is_nothrow_convertible): Likewise.
        * parser.cc (cp_parser_primary_expression): Handle RID_IS_CONVERTIBLE
        and RID_IS_NOTHROW_CONVERTIBLE.
        (cp_parser_trait_expr): Likewise.
        * semantics.cc (trait_expr_value): Handle CPTK_IS_CONVERTIBLE and
        CPTK_IS_NOTHROW_CONVERTIBLE.
        (finish_trait_expr): Likewise.

2022-09-23  Marek Polacek  <polacek@redhat.com>

        PR c++/106983
        * typeck2.cc (split_nonconstant_init_1): Check TYPE_P.

2022-09-22  Patrick Palka  <ppalka@redhat.com>

        PR c++/106826
        * module.cc (trees_out::decl_value): Use get_template_info in
        the MK_partial case to handle both VAR_DECL and TYPE_DECL.
        (trees_out::key_mergeable): Likewise.
        (trees_in::key_mergeable): Likewise.
        (has_definition): Consider DECL_INITIAL of a partial variable
        template specialization.
        (depset::hash::make_dependency): Handle partial variable template
        specializations too.

2022-09-20  Patrick Palka  <ppalka@redhat.com>

        * decl.cc (cp_finish_decl): After updating the deduced type of a
        VAR_DECL, also update the corresponding TEMPLATE_DECL if there
        is one.

2022-09-20  Patrick Palka  <ppalka@redhat.com>

        PR c++/106761
        * module.cc (trees_out::type_node) <case TYPE_PACK_EXPANSION>:
        Stream PACK_EXPANSION_EXTRA_ARGS.
        (trees_in::tree_node) <case TYPE_PACK_EXPANSION>: Likewise.

2022-09-17  Patrick Palka  <ppalka@redhat.com>

        * module.cc (friend_from_decl_list): Don't consider
        CLASSTYPE_TEMPLATE_INFO for a TYPENAME_TYPE friend.
        (trees_in::read_class_def): Don't add to
        CLASSTYPE_BEFRIENDING_CLASSES for a TYPENAME_TYPE friend.

2022-09-16  Patrick Palka  <ppalka@redhat.com>

        PR c++/92505
        * constexpr.cc (cxx_eval_component_reference): Check non_constant_p
        sooner.  In C++14 or later, reject a DECL_MUTABLE_P member access
        only if CONSTRUCTOR_MUTABLE_POISION is also set.

2022-09-16  Jason Merrill  <jason@redhat.com>

        PR c++/106858
        * parser.cc (cp_parser_omp_var_list_no_open): Pass the
        initial token location down.
        * semantics.cc (finish_omp_clauses): Check
        invalid_nonstatic_memfn_p.
        * typeck.cc (invalid_nonstatic_memfn_p): Handle null TREE_TYPE.

2022-09-15  Richard Biener  <rguenther@suse.de>

        * decl.cc (cxx_init_decl_processing): Inline last
        build_void_list_node call.
        (build_void_list_node): Remove.

2022-09-14  Julian Brown  <julian@codesourcery.com>

        * semantics.cc (finish_omp_clauses): Likewise.

2022-09-13  Patrick Palka  <ppalka@redhat.com>

        * cp-tree.h (mark_used): Remove single-parameter overload.  Add
        default argument to the two-parameter overload.
        * decl2.cc (mark_used): Likewise.

2022-09-13  Patrick Palka  <ppalka@redhat.com>

        * cp-tree.h (cxx_constant_value): Define two-parameter version
        that omits the object parameter.
        * decl.cc (build_explicit_specifier): Omit NULL_TREE object
        argument to cxx_constant_value.
        * except.cc (build_noexcept_spec): Likewise.
        * pt.cc (expand_integer_pack): Likewise.
        (fold_targs_r): Likewise.
        * semantics.cc (finish_if_stmt_cond): Likewise.

2022-09-13  Patrick Palka  <ppalka@redhat.com>

        * decl.cc (build_explicit_specifier): Pass complain to
        cxx_constant_value.
        * except.cc (build_noexcept_spec): Likewise.
        * pt.cc (expand_integer_pack): Likewise.
        (tsubst_function_decl): Propagate error_mark_node returned
        from build_explicit_specifier.

2022-09-12  Patrick Palka  <ppalka@redhat.com>

        * call.cc (build_conditional_expr): Adjust calls to
        '_sfinae'-suffixed functions.
        (build_temp): Likewise.
        (convert_like_internal): Likewise.
        (convert_arg_to_ellipsis): Likewise.
        (build_over_call): Likewise.
        (build_cxx_call): Likewise.
        (build_new_method_call): Likewise.
        * constexpr.cc (cxx_eval_outermost_constant_expr): Likewise.
        (cxx_constant_value_sfinae): Rename to ...
        (cxx_constant_value): ... this.  Document its default arguments.
        (fold_non_dependent_expr): Adjust function comment.
        * cp-tree.h (instantiate_non_dependent_expr_sfinae): Rename to ...
        (instantiate_non_dependent_expr): ... this.  Give its 'complain'
        parameter a default argument.
        (get_target_expr_sfinae, get_target_expr): Likewise.
        (require_complete_type_sfinae, require_complete_type): Likewise.
        (abstract_virtuals_error_sfinae, abstract_virtuals_error):
        Likewise.
        (cxx_constant_value_sfinae, cxx_constant_value): Likewise.
        * cvt.cc (build_up_reference): Adjust calls to '_sfinae'-suffixed
        functions.
        (ocp_convert): Likewise.
        * decl.cc (build_explicit_specifier): Likewise.
        * except.cc (build_noexcept_spec): Likewise.
        * init.cc (build_new_1): Likewise.
        * pt.cc (expand_integer_pack): Likewise.
        (instantiate_non_dependent_expr_internal): Adjust function
        comment.
        (instantiate_non_dependent_expr): Rename to ...
        (instantiate_non_dependent_expr_sfinae): ... this.  Document its
        default argument.
        (tsubst_init): Adjust calls to '_sfinae'-suffixed functions.
        (fold_targs_r): Likewise.
        * semantics.cc (finish_compound_literal): Likewise.
        (finish_decltype_type): Likewise.
        (cp_build_bit_cast): Likewise.
        * tree.cc (build_cplus_new): Likewise.
        (get_target_expr): Rename to ...
        (get_target_expr_sfinae): ... this.  Document its default
        argument.
        * typeck.cc (require_complete_type): Rename to ...
        (require_complete_type_sfinae): ... this.  Document its default
        argument.
        (cp_build_array_ref): Adjust calls to '_sfinae'-suffixed
        functions.
        (convert_arguments): Likewise.
        (cp_build_binary_op): Likewise.
        (build_static_cast_1): Likewise.
        (cp_build_modify_expr): Likewise.
        (convert_for_initialization): Likewise.
        * typeck2.cc (abstract_virtuals_error): Rename to ...
        (abstract_virtuals_error_sfinae): ... this. Document its default
        argument.
        (build_functional_cast_1): Adjust calls to '_sfinae'-suffixed
        functions.

2022-09-12  Patrick Palka  <ppalka@redhat.com>

        PR c++/101906
        * pt.cc (tsubst_template_args): Set cp_evaluated here.
        (tsubst_aggr_type): Not here.

2022-09-12  Jason Merrill  <jason@redhat.com>

        PR c++/106893
        PR c++/90451
        * decl.cc (cp_finish_decl): Call mark_single_function.

2022-09-12  Jason Merrill  <jason@redhat.com>

        PR c++/93259
        * pt.cc (type_dependent_expression_p): Treat a compound
        literal of array-of-unknown-bound type like a variable.

2022-09-12  Jason Merrill  <jason@redhat.com>

        PR c++/106567
        * lambda.cc (type_deducible_expression_p): Check
        array_of_unknown_bound_p.

2022-09-12  Jonathan Wakely  <jwakely@redhat.com>

        PR c++/86491
        * decl2.cc (constrain_class_visibility): Adjust wording of
        -Wsubobject-linkage for cases where anonymous
        namespaces aren't used.
        * tree.cc (decl_anon_ns_mem_p): Now only true for actual anonymous
        namespace members, rename old semantics to...
        (decl_internal_context_p): ...this.
        * cp-tree.h, name-lookup.cc, pt.cc: Adjust.

2022-09-08  Jonathan Wakely  <jwakely@redhat.com>

        PR c++/106838
        * class.cc (type_has_virtual_destructor): Return false for
        union types.
        * semantics.cc (check_trait_type): Add KIND parameter to support
        different sets of requirements.
        (finish_trait_expr): Pass KIND argument for relevant traits.

2022-09-08  Patrick Palka  <ppalka@redhat.com>

        PR c++/99130
        * decl2.cc (maybe_instantiate_decl): Adjust function comment.
        Check VAR_OR_FUNCTION_DECL_P.  Pull out the disjunction into ...
        (mark_used): ... here, removing the decl_maybe_constant_var_p
        part of it.

2022-09-07  Jason Merrill  <jason@redhat.com>

        PR c++/106793
        * decl.cc (grokdeclarator): Improve placeholder diagnostics.
        * parser.cc (cp_parser_type_id_1): Add fixit.

2022-09-07  Arsen Arsenović  <arsen@aarsen.me>

        PR c++/106188
        PR c++/106713
        * coroutines.cc (coro_rewrite_function_body): Ensure we have a
        BIND_EXPR wrapping the function body.

2022-09-07  Jakub Jelinek  <jakub@redhat.com>

        PR c++/106829
        * semantics.cc (finish_omp_target_clauses): If current_function_decl
        isn't a nonstatic member function, don't set data.current_object to
        non-NULL.

2022-09-06  Jason Merrill  <jason@redhat.com>

        * decl.cc (grok_op_properties): Return sooner for C++23 op[].

2022-09-06  Jakub Jelinek  <jakub@redhat.com>

        * parser.cc (cp_parser_omp_clause_doacross_sink): Don't verify val
        in omp_cur_iteration - 1 has integer_type_node type.

2022-09-06  Jakub Jelinek  <jakub@redhat.com>

        * pt.cc (tsubst_expr) <case OMP_ORDERED>: If OMP_BODY was NULL, keep
        it NULL after instantiation too.

2022-09-03  Jakub Jelinek  <jakub@redhat.com>

        * parser.cc (cp_parser_omp_clause_name): Handle doacross.
        (cp_parser_omp_clause_depend_sink): Renamed to ...
        (cp_parser_omp_clause_doacross_sink): ... this.  Add depend_p
        argument.  Handle parsing of doacross(sink:omp_cur_iteration-1).  Use
        OMP_CLAUSE_DOACROSS_SINK_NEGATIVE instead of
        OMP_CLAUSE_DEPEND_SINK_NEGATIVE, build OMP_CLAUSE_DOACROSS instead
        of OMP_CLAUSE_DEPEND and set OMP_CLAUSE_DOACROSS_DEPEND flag on it.
        (cp_parser_omp_clause_depend): Use OMP_CLAUSE_DOACROSS_SINK and
        OMP_CLAUSE_DOACROSS_SOURCE instead of OMP_CLAUSE_DEPEND_SINK and
        OMP_CLAUSE_DEPEND_SOURCE, build OMP_CLAUSE_DOACROSS for depend(source)
        and set OMP_CLAUSE_DOACROSS_DEPEND on it.
        (cp_parser_omp_clause_doacross): New function.
        (cp_parser_omp_all_clauses): Handle PRAGMA_OMP_CLAUSE_DOACROSS.
        (cp_parser_omp_depobj): Use OMP_CLAUSE_DEPEND_INVALID instead of
        OMP_CLAUSE_DEPEND_SOURCE.
        (cp_parser_omp_for_loop): Don't diagnose here linear clause together
        with ordered with argument.
        (cp_parser_omp_simd): Don't diagnose ordered clause with argument on
        for simd.
        (OMP_ORDERED_DEPEND_CLAUSE_MASK): Add PRAGMA_OMP_CLAUSE_DOACROSS.
        (cp_parser_omp_ordered): Handle also doacross and adjust for it
        diagnostic wording.
        * pt.cc (tsubst_omp_clause_decl): Use
        OMP_CLAUSE_DOACROSS_SINK_NEGATIVE instead of
        OMP_CLAUSE_DEPEND_SINK_NEGATIVE.
        (tsubst_omp_clauses): Handle OMP_CLAUSE_DOACROSS.
        (tsubst_expr): Use OMP_CLAUSE_DEPEND_INVALID instead of
        OMP_CLAUSE_DEPEND_SOURCE.
        * semantics.cc (cp_finish_omp_clause_depend_sink): Rename to ...
        (cp_finish_omp_clause_doacross_sink): ... this.
        (finish_omp_clauses): Handle OMP_CLAUSE_DOACROSS.  Don't handle
        OMP_CLAUSE_DEPEND_SOURCE and OMP_CLAUSE_DEPEND_SINK.

2022-09-02  David Malcolm  <dmalcolm@redhat.com>

        PR c/90885
        * cp-tree.h (class cp_expr): Add bitfield m_decimal.  Clear it in
        existing ctors.  Add ctor that allows specifying its value.
        (cp_expr::decimal_p): New accessor.
        * parser.cc (cp_parser_expression_stack_entry::flags): New field.
        (cp_parser_primary_expression): Set m_decimal of cp_expr when
        handling numbers.
        (cp_parser_binary_expression): Extract flags from token when
        populating stack.  Call check_for_xor_used_as_pow.

2022-09-01  Marek Polacek  <polacek@redhat.com>

        * cp-tree.h (maybe_strip_ref_conversion): Remove.

2022-08-30  Ulrich Drepper  <drepper@gmail.com>

        * Make-lang.in: Add rule to rebuild std-name-hint.h from
        std-name-hint.gperf.
        * name-lookup.cc (get_std_name_hint): Remove hints array.
        Use gperf-generated class std_name_hint_lookup.
        Include "std-name-hint.h".
        * std-name-hint.gperf: New file.
        * std-name-hint.h: New file.  Generated from the .gperf file.

2022-08-30  Marek Polacek  <polacek@redhat.com>

        PR c++/106759
        * cp-objcp-common.cc (names_builtin_p): Handle RID_IS_NOTHROW_ASSIGNABLE
        and RID_IS_NOTHROW_CONSTRUCTIBLE.

2022-08-29  Marek Polacek  <polacek@redhat.com>

        PR c++/106712
        * decl.cc (grokdeclarator): Reverse the order of arguments to
        attr_chainon.

2022-08-26  Marek Polacek  <polacek@redhat.com>

        PR c++/81159
        * typeck.cc (maybe_warn_self_move): New.
        (cp_build_modify_expr): Call maybe_warn_self_move.

2022-08-25  Marek Polacek  <polacek@redhat.com>

        * cp-tree.h (enum cp_tree_index): Remove CTI_NULLPTR, CTI_NULLPTR_TYPE.
        Move it to c_tree_index.
        (nullptr_node): No longer define here.
        (nullptr_type_node): Likewise.
        (NULLPTR_TYPE_P): Likewise.
        * decl.cc (cxx_init_decl_processing): Only keep C++-specific nullptr
        initialization; move the shared code to c_common_nodes_and_builtins.

2022-08-25  Jason Merrill  <jason@redhat.com>

        * call.cc (unsafe_return_slot_p): Return 2 for *this in a
        constructor.

2022-08-23  Marek Polacek  <polacek@redhat.com>

        * typeck.cc (maybe_warn_pessimizing_move): Don't warn about
        redundant std::move when the expression was wrapped in { }.

2022-08-17  Marek Polacek  <polacek@redhat.com>

        PR c++/90428
        * typeck.cc (can_do_rvo_p): Rename to ...
        (can_elide_copy_prvalue_p): ... this.
        (maybe_warn_pessimizing_move): Extend the
        -Wredundant-move warning to warn about std::move on a
        const-qualified object.

2022-08-17  Marek Polacek  <polacek@redhat.com>

        PR c++/89780
        * pt.cc (tsubst_copy_and_build) <case CALL_EXPR>: Maybe suppress
        -Wpessimizing-move.
        * typeck.cc (maybe_warn_pessimizing_move): Don't issue warnings
        if they are suppressed.
        (check_return_expr): Disable -Wpessimizing-move when returning
        a dependent expression.

2022-08-17  Marek Polacek  <polacek@redhat.com>

        PR c++/106276
        * call.cc (build_over_call): Call maybe_warn_pessimizing_move.
        * cp-tree.h (maybe_warn_pessimizing_move): Declare.
        * decl.cc (build_aggr_init_full_exprs): Call
        maybe_warn_pessimizing_move.
        * typeck.cc (maybe_warn_pessimizing_move): Handle TREE_LIST and
        CONSTRUCTOR.  Add a bool parameter and use it.  Adjust a diagnostic
        message.
        (check_return_expr): Adjust the call to maybe_warn_pessimizing_move.

2022-08-17  Tobias Burnus  <tobias@codesourcery.com>
            Chung-Lin Tang  <cltang@codesourcery.com>

        PR c++/104493
        * cp-objcp-common.h (LANG_HOOKS_OMP_MAPPABLE_TYPE): Remove.
        * cp-tree.h (cp_omp_mappable_type, cp_omp_emit_unmappable_type_notes):
        Remove.
        * decl2.cc (cp_omp_mappable_type_1, cp_omp_mappable_type,
        cp_omp_emit_unmappable_type_notes): Remove.
        (cplus_decl_attributes): Call omp_mappable_type instead of
        removed langhook.
        * decl.cc (cp_finish_decl): Likewise; call cxx_incomplete_type_inform
        in lieu of cp_omp_emit_unmappable_type_notes.
        * semantics.cc (finish_omp_clauses): Likewise.

2022-08-16  Tom Honermann  <tom@honermann.net>

        PR c++/106423
        * parser.cc (cp_lexer_saving_tokens): Add comment regarding
        diagnostic requirements.

2022-08-16  Jakub Jelinek  <jakub@redhat.com>

        * typeck.cc (cp_build_modify_expr): Implement
        P2327R1 - De-deprecating volatile compound operations.  Don't warn
        for |=, &= or ^= with volatile lhs.
        * expr.cc (mark_use) <case MODIFY_EXPR>: Adjust warning wording,
        leave out simple.

2022-08-15  Marek Polacek  <polacek@redhat.com>

        PR c++/106276
        * typeck.cc (can_do_rvo_p): New.
        (maybe_warn_pessimizing_move): Warn when moving a temporary object
        in a return statement prevents copy elision.

2022-08-11  Marek Polacek  <polacek@redhat.com>

        PR middle-end/102633
        * decl.cc (cp_finish_decl): Call suppress_warning.

2022-08-07  Jakub Jelinek  <jakub@redhat.com>

        PR c++/88174
        * constexpr.cc (cxx_eval_store_expression): Handle REALPART_EXPR
        and IMAGPART_EXPR.  Change ctors from releasing_vec to
        auto_vec<tree *>, adjust all uses.  For !preeval, update ctors
        vector.

2022-07-31  Lewis Hyatt  <lhyatt@gmail.com>

        PR c++/66290
        * parser.cc (cp_lexer_new_main): Rename global done_lexing to
        override_libcpp_locations.

2022-07-31  Jason Merrill  <jason@redhat.com>

        PR c++/106369
        * constexpr.cc (reduced_constant_expression_p): Return false
        if a CONSTRUCTOR initializes an empty field.

2022-07-29  Jakub Jelinek  <jakub@redhat.com>

        PR c++/106448
        * parser.cc (cp_parser_omp_atomic): For simple cast followed by
        CPP_QUERY token, don't try cp_parser_binary_operation if compare
        is true.

2022-07-26  Marek Polacek  <polacek@redhat.com>

        PR c++/106311
        * pt.cc (redeclare_class_template): Check DECL_P before accessing
        DECL_SOURCE_LOCATION.

2022-07-26  Jason Merrill  <jason@redhat.com>

        PR c++/106230
        * semantics.cc (finish_for_stmt): Check stmts_are_full_exprs_p.

2022-07-25  Jason Merrill  <jason@redhat.com>

        PR c++/87729
        * class.cc (warn_hidden): Remove shortcut.

2022-07-22  Patrick Palka  <ppalka@redhat.com>

        PR c++/106366
        * pt.cc (do_class_deduction): Don't consider TYPE_HAS_LIST_CTOR
        when setting try_list_ctor.  Reset args even when try_list_ctor
        is true and there are no list candidates.  Call resolve_args on
        the reset args.  Rename try_list_ctor to try_list_cand.

2022-07-22  Martin Liska  <mliska@suse.cz>

        PR other/106370
        * init.cc (sort_mem_initializers): Remove continue as last stmt
        in a loop.

2022-07-21  Jason Merrill  <jason@redhat.com>

        PR c++/106361
        * decl.cc (move_fn_p): Remove assert.

2022-07-21  Jason Merrill  <jason@redhat.com>

        DR 2084
        PR c++/98423
        * method.cc (walk_field_subobs): Fix DMI in union case.

2022-07-19  Patrick Palka  <ppalka@redhat.com>

        PR c++/94894
        PR c++/105766
        PR c++/106201
        * call.cc (enum conversion_kind): Add ck_deferred_bad enumerator.
        (has_next): Return false for it.
        (reference_binding): Return a ck_deferred_bad conversion instead
        of an actual bad conversion when LOOKUP_SHORTCUT_BAD_CONVS is set.
        Remove now obsolete early exit for the incomplete TO case.
        (implicit_conversion_1): Don't mask out LOOKUP_SHORTCUT_BAD_CONVS.
        (add_function_candidate): Set LOOKUP_SHORTCUT_BAD_CONVS iff
        shortcut_bad_convs.
        (missing_conversion_p): Also return true for a ck_deferred_bad
        conversion.
        * cp-tree.h (LOOKUP_SHORTCUT_BAD_CONVS): Define.

2022-07-19  Jonathan Wakely  <jwakely@redhat.com>

        * cp-objcp-common.cc (names_builtin_p): Return true for
        RID_REF_CONSTRUCTS_FROM_TEMPORARY and
        RID_REF_CONVERTS_FROM_TEMPORARY.

2022-07-15  Marek Polacek  <polacek@redhat.com>

        PR c++/104477
        * call.cc (ref_conv_binds_directly_p): Rename to ...
        (ref_conv_binds_directly): ... this.  Add a new bool parameter.  Change
        the return type to tristate.
        * constraint.cc (diagnose_trait_expr): Handle
        CPTK_REF_CONSTRUCTS_FROM_TEMPORARY and CPTK_REF_CONVERTS_FROM_TEMPORARY.
        * cp-tree.h: Include "tristate.h".
        (enum cp_trait_kind): Add CPTK_REF_CONSTRUCTS_FROM_TEMPORARY
        and CPTK_REF_CONVERTS_FROM_TEMPORARY.
        (ref_conv_binds_directly_p): Rename to ...
        (ref_conv_binds_directly): ... this.
        (ref_xes_from_temporary): Declare.
        * cxx-pretty-print.cc (pp_cxx_trait_expression): Handle
        CPTK_REF_CONSTRUCTS_FROM_TEMPORARY and CPTK_REF_CONVERTS_FROM_TEMPORARY.
        * method.cc (ref_xes_from_temporary): New.
        * parser.cc (cp_parser_primary_expression): Handle
        RID_REF_CONSTRUCTS_FROM_TEMPORARY and RID_REF_CONVERTS_FROM_TEMPORARY.
        (cp_parser_trait_expr): Likewise.
        (warn_for_range_copy): Adjust to call ref_conv_binds_directly.
        * semantics.cc (trait_expr_value): Handle
        CPTK_REF_CONSTRUCTS_FROM_TEMPORARY and CPTK_REF_CONVERTS_FROM_TEMPORARY.
        (finish_trait_expr): Likewise.

2022-07-13  Patrick Palka  <ppalka@redhat.com>

        PR c++/105912
        * pt.cc (tsubst_copy_and_build) <case CALL_EXPR>: Guard against
        NULL_TREE extract_call_expr result.

2022-07-13  Patrick Palka  <ppalka@redhat.com>

        PR c++/105842
        * constraint.cc (satisfy_declaration_constraints): Refine early
        exit test for argument dependence.
        * cp-tree.h (uses_outer_template_parms_in_constraints): Declare.
        * pt.cc (template_class_depth): Handle TI_TEMPLATE being a
        FIELD_DECL.
        (usse_outer_template_parms): Factor out constraint dependence
        test into ...
        (uses_outer_template_parms_in_constraints): ... here.
        (type_dependent_expression_p): Use it for FUNCTION_DECL.

2022-07-07  Patrick Palka  <ppalka@redhat.com>

        PR c++/105956
        * pt.cc (template_arg_to_parm): Define.
        (tsubst_argument_pack): Try to reuse the corresponding
        ARGUMENT_PACK from 'args' when substituting into a generic
        ARGUMENT_PACK for a variadic template parameter.
        (tsubst_template_args): Move variable declarations closer to
        their first use.  Replace 'orig_t' with 'r'.  Rename 'need_new'
        to 'const_subst_p'.  Heuristically detect if the substituted
        elements are identical to that of a level from 'args' and avoid
        allocating a new TREE_VEC if so.  Add sanity check for the
        length of the new TREE_VEC, and remove dead ARGUMENT_PACK_P test.
        (tsubst_decl) <case TYPE_DECL, case VAR_DECL>: Revert
        r13-1045-gcb7fd1ea85feea change for avoiding substitution into
        DECL_TI_ARGS, but still avoid coercion in this case.

2022-07-07  Jason Merrill  <jason@redhat.com>

        PR c++/87729
        * class.cc (warn_hidden): Ignore [cd]tors.

2022-07-06  Lewis Hyatt  <lhyatt@gmail.com>

        PR c++/53431
        * parser.cc (cp_parser_pragma_kind): Move earlier in the file.
        (cp_lexer_handle_early_pragma): New function.
        (cp_lexer_new_main): Support parsing and handling early pragmas.
        (c_parse_file): Adapt to changes in cp_lexer_new_main.

2022-07-06  Jason Merrill  <jason@redhat.com>

        PR c++/106179
        PR c++/106024
        * parser.cc (cp_parser_lookup_name): Remove :: requirement
        for using unqualified lookup result.

2022-07-05  Nathan Sidwell  <nathan@acm.org>

        * module.cc
        (struct ord_loc_info, ord_loc_traits): New.
        (ord_loc_tabke, ord_loc_remap): New globals.
        (struct location_map_info): Delete.
        (struct module_state_config): Rename ordinary_loc_align to
        loc_range_bits.
        (module_for_ordinary_loc): Adjust.
        (module_state::note_location): Note ordinary locations,
        return bool.
        (module_state::write_location): Adjust ordinary location
        streaming.
        (module_state::read_location): Likewise.
        (module_state::write_init_maps): Allocate ord_loc_table.
        (module_state::write_prepare_maps): Reimplement ordinary
        map preparation.
        (module_state::read_prepare_maps): Adjust.
        (module_state::write_ordinary_maps): Reimplement.
        (module_state::write_macro_maps): Adjust.
        (module_state::read_ordinary_maps): Reimplement.
        (module_state::write_macros): Adjust.
        (module_state::write_config): Adjust.
        (module_state::read_config): Adjust.
        (module_state::write_begin): Adjust.
        (module_state::read_initial): Adjust.

2022-07-04  Tobias Burnus  <tobias@codesourcery.com>
            Chung-Lin Tang  <cltang@codesourcery.com>
            Thomas Schwinge  <thomas@codesourcery.com>

        * parser.cc (cp_parser_omp_target_data,
        cp_parser_omp_target_enter_data, cp_parser_omp_target_exit_data,
        cp_parser_omp_target_update): Set OMP_REQUIRES_TARGET_USED.
        (cp_parser_omp_requires): Remove sorry.

2022-07-01  Lewis Hyatt  <lhyatt@gmail.com>

        * parser.cc (cp_token_is_module_directive): New function
        refactoring common code.
        (cp_parser_skip_to_closing_parenthesis_1): Use the new function.
        (cp_parser_skip_to_end_of_statement): Likewise.
        (cp_parser_skip_to_end_of_block_or_statement): Likewise.
        (cp_parser_declaration): Likewise.

2022-07-01  Marek Polacek  <polacek@redhat.com>

        PR c++/105550
        * constexpr.cc (cxx_eval_conditional_expression): Strip TARGET_EXPRs.

2022-07-01  Tobias Burnus  <tobias@codesourcery.com>

        * parser.cc (cp_parser_omp_target_enter_data,
        cp_parser_omp_target_exit_data): Accept tofrom
        map-type modifier but use 'to' / 'from' internally.

2022-07-01  Marek Polacek  <polacek@redhat.com>

        PR c++/106111
        * parser.cc (cp_lexer_get_preprocessor_token): Also warn about
        RID_ALIGNOF, RID_ALIGNAS, RID_THREAD.

2022-07-01  Jason Merrill  <jason@redhat.com>

        PR c++/105779
        * call.cc (resolve_args): Use complain.

2022-07-01  Jason Merrill  <jason@redhat.com>

        * parser.cc (missing_template_diag): Split out...
        (cp_parser_id_expression): ...from here.

2022-07-01  Jason Merrill  <jason@redhat.com>

        PR c++/106024
        * parser.cc (missing_template_diag): Factor out...
        (cp_parser_id_expression): ...from here.
        (cp_parser_lookup_name): Don't look in dependent object_type.

2022-06-30  Nathan Sidwell  <nathan@acm.org>

        * module.cc (module_state::write_define): Drop located param.
        (module_state::read_define): Likewise.
        (module_state::prepare_macros): New, broken out of ...
        (module_state::write_macros): ... here.  Adjust.
        (module_state::write_begin): Adjust.

2022-06-29  Nathan Sidwell  <nathan@acm.org>

        * module.cc (macro_info, macro_traits, macro_table,
        macro_remap): Rename to ...
        (macro_loc_info, macro_loc_traits, macro_loc_table,
        macro_loc_remap): ... these.  Update all uses.
        (module_state::write_prepare_maps): Remove unneeded macro checking.
        (module_state::write_begin): Free macro_loc_remap.

2022-06-27  Sergei Trofimovich  <siarheit@google.com>

        PR c++/106102
        * mapper-client.cc: Include <memory> via "system.h".
        * mapper-resolver.cc: Ditto.
        * module.cc: Ditto.

2022-06-27  David Malcolm  <dmalcolm@redhat.com>

        * cxx-pretty-print.h: Add "final" and "override" to various vfunc
        implementations, removing redundant "virtual" as appropriate.
        * module.cc: Likewise.

2022-06-24  Jason Merrill  <jason@redhat.com>

        PR c++/87729
        PR c++/20423
        * class.cc (warn_hidden): Handle -Woverloaded-virtual=1.

2022-06-24  Alexandre Oliva  <oliva@adacore.com>

        * g++spec.cc (lang_specific_driver): Implement -nostdlib++.

2022-06-23  Jason Merrill  <jason@redhat.com>

        PR c++/105925
        * call.cc (build_aggr_conv): Don't depend on
        CONSTRUCTOR_IS_DESIGNATED_INIT.

2022-06-23  Jason Merrill  <jason@redhat.com>

        PR c++/105925
        * decl.cc (reshape_init_array_1): Set
        CONSTRUCTOR_IS_DESIGNATED_INIT here.
        (reshape_init_class): And here.
        (reshape_init): Not here.

2022-06-23  Patrick Palka  <ppalka@redhat.com>

        PR c++/105931
        * expr.cc (fold_for_warn): Don't fold when in an unevaluated
        context.

2022-06-23  Patrick Palka  <ppalka@redhat.com>

        PR c++/105982
        * pt.cc (lookup_template_class): After calling complete_type for
        the substituted context, check the table again iff the type was
        previously incomplete and complete_type made it complete.

2022-06-23  Jason Merrill  <jason@redhat.com>

        PR c++/94554
        * pt.cc (dependent_operand_p): Split out from...
        (tsubst_copy_and_build): ...here.
        (tsubst_expr) [IF_STMT]: Use it.
        * semantics.cc (finish_if_stmt_cond): Keep the pre-conversion
        condition in the template tree.

2022-06-23  Jason Merrill  <jason@redhat.com>

        PR c++/105885
        * pt.cc (tsubst_copy_and_build): Also suppress -Waddress for
        comparison of dependent operands.

2022-06-23  Nathan Sidwell  <nathan@acm.org>

        * module.cc (struct macro_info): New.
        (struct macro_traits): New.
        (macro_remap, macro_table): New globals.
        (depset::hash::find_dependencies): Note namespace location.
        (module_for_macro_loc): Adjust.
        (module_state::note_location): New.
        (module_state::Write_location): Note location when not
        streaming. Adjust macro location streaming.
        (module_state::read_location): Adjust macro location
        streaming.
        (module_state::write_init_maps): New.
        (module_state::write_prepare_maps): Reimplement macro map
        preparation.
        (module_state::write_macro_maps): Reimplement.
        (module_state::read_macro_maps): Likewise.
        (module_state::write_begin): Adjust.

2022-06-23  Jason Merrill  <jason@redhat.com>

        * pt.cc (type_unification_real): An auto tparm can't
        be affected by other deductions.

2022-06-23  Jason Merrill  <jason@redhat.com>

        PR c++/105964
        * pt.cc (type_dependent_expression_p): Look through BASELINK.

2022-06-22  Jason Merrill  <jason@redhat.com>

        PR c++/105908
        * name-lookup.cc (outer_binding): Strip BASELINK.

2022-06-22  Nathan Sidwell  <nathan@acm.org>

        * module.cc (struct duplicate_hash): Remove.
        (duplicate_hash_map): Adjust.

2022-06-22  Jason Merrill  <jason@redhat.com>

        PR c++/104642
        * constexpr.cc (cxx_eval_builtin_function_call): Handle
        unreachable/trap earlier.
        * cp-gimplify.cc (cp_maybe_instrument_return): Use
        build_builtin_unreachable.

2022-06-18  Jakub Jelinek  <jakub@redhat.com>

        * cp-ubsan.cc (cp_ubsan_instrument_vptr_p): Use
        flag_sanitize_trap & SANITIZE_VPTR instead of
        flag_sanitize_undefined_trap_on_error.

2022-06-17  Jakub Jelinek  <jakub@redhat.com>

        PR c++/106001
        * typeck.cc (build_x_shufflevector): Use fold_non_dependent_expr
        instead of maybe_constant_value.

2022-06-16  Nathan Sidwell  <nathan@acm.org>

        * decl2.cc (finish_objects): Add startp parameter, adjust.
        (generate_ctor_or_dtor_function): Detect empty fn, and don't
        generate unnecessary code.  Remove objc startup here ...
        (c_parse_final_cleanyps): ... do it here.

2022-06-16  Martin Liska  <mliska@suse.cz>

        * decl2.cc (struct priority_map_traits): Remove unused param.

2022-06-15  Nathan Sidwell  <nathan@acm.org>

        * module.cc (module_state::write_readme): Use less confusing
        importable unit names.

2022-06-14  Nathan Sidwell  <nathan@acm.org>

        * cp-tree.h (fini_modules): Add has_inits parm.
        * decl2.cc (c_parse_final_cleanups): Check for
        inits, adjust fini_modules flags.
        * module.cc (module_state): Rename call_init_p to
        active_init_p.
        (module_state::write_config): Write active_init.
        (module_state::read_config): Read it.
        (module_determine_import_inits): Clear active_init_p
        of covered inits.
        (late_finish_module): Add has_init parm.  Record it.
        (fini_modules): Adjust.

2022-06-13  Nathan Sidwell  <nathan@acm.org>

        * module.cc (module_state::write): Separate to ...
        (module_state::write_begin, module_state::write_end): ...
        these.
        (module_state::write_readme): Drop extensions parameter.
        (struct module_processing_cookie): Add more fields.
        (finish_module_processing): Adjust state writing call.
        (late_finish_module): Call write_end.

2022-06-10  Patrick Palka  <ppalka@redhat.com>

        PR c++/65328
        * decl.cc (typename_hasher::hash): Add extra overloads.
        Use iterative_hash_object instead of htab_hash_pointer.
        Hash TYPENAME_TYPE_FULLNAME instead of TYPE_IDENTIFIER.
        (build_typename_type): Use typename_hasher::hash.
        * pt.cc (spec_hasher::hash): Add two-parameter overload.
        Set comparing_specializations around the call to
        hash_tmpl_and_args.
        (iterative_hash_template_arg) <case TYPENAME_TYPE>:
        When comparing_specializations, hash the TYPE_CONTEXT
        and TYPENAME_TYPE_FULLNAME.
        (tsubst_function_decl): Use spec_hasher::hash instead of
        hash_tmpl_and_args.
        (tsubst_template_decl): Likewise.
        (tsubst_decl): Likewise.

2022-06-10  Patrick Palka  <ppalka@redhat.com>

        * pt.cc (instantiate_template): Don't substitute the context
        of the most general template if that of the partially
        instantiated template is already non-dependent.

2022-06-10  Patrick Palka  <ppalka@redhat.com>

        * pt.cc (lookup_template_class): Remove dead stores to
        context parameter.  Don't substitute the context of the
        most general template if that of the partially instantiated
        template is already non-dependent.  Check the specializations
        table again after completing the context of a nested dependent
        specialization.
        (tsubst_aggr_type) <case RECORD_TYPE>: Don't substitute
        TYPE_CONTEXT or pass it to lookup_template_class.
        (tsubst_decl) <case TYPE_DECL, case TYPE_DECL>: Avoid substituting
        the TREE_TYPE for DECL_SELF_REFERENCE_P.  Avoid template argument
        substitution or coercion in some cases.

2022-06-10  Nathan Sidwell  <nathan@acm.org>

        * cp-tree.h (fini_modules): Add some parameters.
        (finish_module_processing): Return an opaque pointer.
        * decl2.cc (c_parse_final_cleanups): Propagate a cookie from
        finish_module_processing to fini_modules.
        * module.cc (struct module_processing_cookie): New.
        (finish_module_processing): Return a heap-allocated cookie.
        (late_finish_module): New.  Finish out the module writing.
        (fini_modules): Adjust.

2022-06-10  Nathan Sidwell  <nathan@acm.org>

        * cp-tree.h (module_has_import_init): Rename to ...
        (module_determined_import_inits): ... here.
        * decl2.cc (start_objects): Do not handle module initializers
        here.
        (c_parse_final_cleanups): Generate a separate module
        initializer calling function and add it to the list.  Shrink
        the c-lang region.
        * module.cc (num_init_calls_needed): Delete.
        (module_has_import_init): Rename to ...
        (module_determined_import_inits): ... here. Do the
        calculation here ...
        (finish_module_processing): ... rather than here.
        (module_add_import_initializers): Reformat.

2022-06-09  Jakub Jelinek  <jakub@redhat.com>

        PR c++/105871
        * constexpr.cc (cxx_eval_bit_field_ref): For BIT_FIELD_REF with
        non-integral result type use fold_ternary too like for BIT_FIELD_REFs
        from VECTOR_CST.  If fold_ternary returns NULL, diagnose non-constant
        expression, set *non_constant_p and return t, instead of returning
        NULL.

2022-06-09  Nathan Sidwell  <nathan@acm.org>

        * cp-tree.h (module_initializer_kind): Replace with ...
        (module_global_init_needed, module_has_import_inits): ...
        these.
        * decl2.cc (start_objects): Add has_body parm.  Reorganize
        module initializer creation.
        (generate_ctor_or_dtor_function): Adjust.
        (c_parse_final_cleanups): Adjust.
        (vtv_start_verification_constructor_init_function): Adjust.
        * module.cc (module_initializer_kind): Replace with ...
        (module_global_init_needed, module_has_import_inits): ...
        these.

2022-06-08  Jason Merrill  <jason@redhat.com>

        PR c++/105852
        * decl.cc (duplicate_decls): Change non-templated friend
        check to an assert.
        * pt.cc (tsubst_function_decl): Don't set DECL_TEMPLATE_INFO
        on non-templated friends.
        (tsubst_friend_function): Adjust.

2022-06-08  Jason Merrill  <jason@redhat.com>

        PR c++/105852
        PR c++/105761
        * decl.cc (duplicate_decls): Avoid copying template info
        from non-templated friend even if newdecl isn't a definition.
        Correct handling of DECL_UNIQUE_FRIEND_P on templates.
        * pt.cc (non_templated_friend_p): New.
        * cp-tree.h (non_templated_friend_p): Declare it.

2022-06-08  Nathan Sidwell  <nathan@acm.org>

        * decl2.cc (struct priority_info_s, priority_info): Delete.
        (priority_map_traits, priority_map_t): New.
        (static_init_fini_fns): New.
        (INITIALIZE_P_IDENTIFIER, PRIORITY_IDENTIFIER): Delete.
        (initialize_p_decl, priority_decl): Delete.
        (ssdf_decls, priority_info_map): Delete.
        (start_static_storage_duration_function): Rename to ...
        (start_partial_init_fini_fn): ... here. Create a void arg fn.
        Add it to the slot in the appropriate static_init_fini_fns
        hash table.
        (finish_static_storage_duration_function): Rename to ...
        (finish_partial_init_fini_fn): ... here.
        (get_priority_info): Delete.
        (one_static_initialization_or_destruction): Assert not
        trivial dtor.
        (do_static_initialization_or_destruction): Rename to ...
        (emit_partial_init_fini_fn) ... here.  Start & finish the fn.
        Simply init/fini each var.
        (partition_vars_for_init_fini): Partition vars according to
        priority and add to init and/or fini list.
        (generate_ctor_or_dtor_function): Start and finish the function.
        Do santitizer calls here.
        (generate_ctor_and_dtor_functions_for_priority): Delete.
        (c_parse_final_cleanups): Reimplement global init/fini
        processing.

2022-06-07  Jakub Jelinek  <jakub@redhat.com>

        * parser.cc (cp_parser_omp_clause_linear): Parse OpenMP 5.2
        style linear clause modifiers.  Set
        OMP_CLAUSE_LINEAR_OLD_LINEAR_MODIFIER flag on the clauses when
        old style modifiers are used.
        * semantics.cc (finish_omp_clauses): Only reject linear clause
        with val modifier on simd or for if the old style modifiers are
        used.

2022-06-07  Roger Sayle  <roger@nextmovesoftware.com>

        PR c++/96442
        * decl.cc (start_enum): When emitting a "must be integral" error,
        set ENUM_UNDERLYING_TYPE to integer_type_node, to avoid an ICE
        downstream in build_enumeration.

2022-06-06  Patrick Palka  <ppalka@redhat.com>

        PR c++/53164
        PR c++/105848
        * pt.cc (tsubst_copy_and_build) <case CALL_EXPR>: Look through an
        ADDR_EXPR callee when calling mark_used.

2022-06-04  Marek Polacek  <polacek@redhat.com>

        PR c++/102399
        PR c++/69585
        * parser.cc (cp_parser_attributes_opt): Accept GNU attributes
        followed by [[]] attributes and vice versa.

2022-06-03  Patrick Palka  <ppalka@redhat.com>

        PR c++/105756
        * typeck.cc (cp_build_binary_op): Don't fold operands
        when c_inhibit_evaluation_warnings.

2022-06-03  Jason Merrill  <jason@redhat.com>

        PR c++/105761
        * decl.cc (duplicate_decls): Don't copy DECL_TEMPLATE_INFO
        from a hidden friend.

2022-06-03  Patrick Palka  <ppalka@redhat.com>

        PR c++/105637
        * tree.cc (maybe_dummy_object): When returning a dummy
        object, respect the cv-quals of 'this' if available.

2022-06-03  Patrick Palka  <ppalka@redhat.com>

        PR c++/100374
        * pt.cc (determine_specialization): Compare overall constraints
        not just the trailing constraints.
        (tsubst_each_template_parm_constraints): Define.
        (tsubst_friend_function): Use it.
        (tsubst_friend_class): Use it.
        (tsubst_template_parm): Don't substitute TEMPLATE_PARM_CONSTRAINTS.

2022-06-03  Patrick Palka  <ppalka@redhat.com>

        PR c++/105797
        * pt.cc (for_each_template_parm_r) <case FUNCTION_DECL, VAR_DECL>:
        Don't walk DECL_CONTEXT.
        <case PARM_DECL>: Likewise.  Walk TREE_TYPE.
        <case CONST_DECL>: Simplify.
        (any_template_parm_r) <case PARM_DECL>: Don't walk TREE_TYPE.

2022-06-02  Marek Polacek  <polacek@redhat.com>

        * constexpr.cc (potential_constant_expression_1): Treat
        {,VEC_}NEW_EXPR and {,VEC_}DELETE_EXPRas potentially constant in C++20.

2022-06-02  Marek Polacek  <polacek@redhat.com>

        PR c++/105803
        * pt.cc (value_dependent_expression_p): Handle {,VEC_}NEW_EXPR
        in the switch.

2022-06-02  David Malcolm  <dmalcolm@redhat.com>

        * cp-lang.cc (LANG_HOOKS_GET_SARIF_SOURCE_LANGUAGE): Redefine.
        (cp_get_sarif_source_language): New.

2022-06-02  Jason Merrill  <jason@redhat.com>

        PR c++/105795
        * constexpr.cc (init_subob_ctx): Clear ctx->ctor for empty subob.
        (cxx_eval_store_expression): Likewise.
        (cxx_eval_bare_aggregate): Handle null ctx->ctor.

2022-06-02  Jason Merrill  <jason@redhat.com>

        PR c++/105795
        * constexpr.cc (cxx_eval_bare_aggregate): Always call
        init_subob_ctx.

2022-06-01  Jason Merrill  <jason@redhat.com>

        PR c++/105734
        * parser.cc (cp_parser_postfix_dot_deref_expression): Use typeof
        if the expression has auto type.

2022-06-01  Jason Merrill  <jason@redhat.com>

        PR c++/105779
        * call.cc (resolve_args): Call mark_single_function here.
        * pt.cc (unify_one_argument): Not here.

2022-06-01  Nathan Sidwell  <nathan@acm.org>

        * decl2.cc (fix_temporary_vars_context_r): Use data argument
        for new context.
        (one_static_initialization_or_destruction): Adjust tree walk
        call.  Refactor guard generation.

2022-06-01  Nathan Sidwell  <nathan@acm.org>

        * decl2.cc (ssdf_decl): Delete global.
        (start_static_storage_duration_function): Use some RAII.
        (do_static_initialization_or_destruction): Likewise.
        (c_parse_final_cleanups): Likewise.  Avoid rechecking 'vars'.

2022-06-01  Nathan Sidwell  <nathan@acm.org>

        * decl2.cc (start_objects): Replace 'method_type' parameter
        with 'initp' boolean, rename and retype 'priority' parameter.
        (finish_objects): Likewise.  Do not expand here.
        (one_static_initialization_or_destruction): Move 'initp'
        parameter first.
        (do_static_initialization_or_destruction): Likewise.
        (generate_ctor_or_dtor_function): Rename 'initp' parameter.
        Adjust start_objects/finish_obects calls and expand here.
        (generate_ctor_and_dtor_functions_for_priority): Adjust calls.
        (c_parse_final_cleanups): Likewise.
        (vtv_start_verification_constructor_init): Adjust.
        (vtv_finish_verification_constructor_init): Use finish_objects.

2022-05-31  Patrick Palka  <ppalka@redhat.com>

        PR c++/105758
        * call.cc (build_over_call): Use z_candidate::conversion_path
        and ::access_path instead of TYPE_BINFO when building the
        BASELINK for the templated form.

2022-05-31  Patrick Palka  <ppalka@redhat.com>

        * parser.cc: Use auto_timevar instead of timevar_push/pop.
        Remove wrapper functions.
        * pt.cc: Likewise.

2022-05-31  Patrick Palka  <ppalka@redhat.com>

        * cp-tree.h (cp_build_qualified_type_real): Rename to ...
        (cp_build_qualified_type): ... this.  Give its last parameter
        a default argument.  Remove macro of the same name.
        * decl.cc (grokdeclarator): Adjust accordingly.
        * pt.cc (tsubst_aggr_type): Likewise.
        (rebuild_function_or_method_type): Likewise.
        (tsubst): Likewise.
        (maybe_dependent_member_ref): Likewise.
        (unify): Likewise.
        * tree.cc (cp_build_qualified_type_real): Rename to ...
        (cp_build_qualified_type): ... this.  Adjust accordingly.

2022-05-31  Jason Merrill  <jason@redhat.com>

        * Make-lang.in (c++.tags): Just look at *.cc.

2022-05-31  Patrick Palka  <ppalka@redhat.com>

        * cp-tree.h (comp_template_args): Change return type to bool.
        * pt.cc (comp_template_args): Document default arguments.
        Change return type to bool and adjust returns accordingly.

2022-05-31  Patrick Palka  <ppalka@redhat.com>

        * decl.cc (grokvardecl): Use current_template_constraints.
        (grokdeclarator): Likewise.
        (xref_tag): Likewise.
        * semantics.cc (finish_template_template_parm): Likewise.

2022-05-31  Jakub Jelinek  <jakub@redhat.com>

        * parser.cc (OMP_SCOPE_CLAUSE_MASK): Add firstprivate and allocate
        clauses.

2022-05-30  Marek Polacek  <polacek@redhat.com>

        PR c++/99080
        * pt.cc (type_dependent_expression_p): Assert !TYPE_P.
        * semantics.cc (finish_id_expression_1): Handle UNBOUND_CLASS_TEMPLATE
        specifically.

2022-05-28  Jakub Jelinek  <jakub@redhat.com>

        * parser.cc (handle_omp_declare_target_clause): If OMP_CLAUSE_LINK was
        seen first, use "%<to%>" or "%<enter%>" depending on
        OMP_CLAUSE_ENTER_TO of the current clause, otherwise use
        "%<to%> or %<enter%>" wording.

2022-05-28  Jason Merrill  <jason@redhat.com>

        PR c++/105652
        * pt.cc (tsubst_lambda_expr): Don't let a namespace-scope lambda
        instantiate into a class-scope lambda.

2022-05-27  Marek Polacek  <polacek@redhat.com>

        PR c++/105725
        * parser.cc (class_decl_loc_t::add): Check CLASS_TYPE_P.

2022-05-27  Jakub Jelinek  <jakub@redhat.com>

        * parser.cc (cp_parser_omp_clause_name): Parse enter clause.
        (cp_parser_omp_all_clauses): For to clause on declare target, use
        OMP_CLAUSE_ENTER clause with OMP_CLAUSE_ENTER_TO instead of
        OMP_CLAUSE_TO_DECLARE clause.  Handle PRAGMA_OMP_CLAUSE_ENTER.
        (OMP_DECLARE_TARGET_CLAUSE_MASK): Add enter clause.
        (cp_parser_omp_declare_target): Use OMP_CLAUSE_ENTER instead of
        OMP_CLAUSE_TO_DECLARE.
        * semantics.cc (finish_omp_clauses): Handle OMP_CLAUSE_ENTER instead
        of OMP_CLAUSE_TO_DECLARE, to OMP_CLAUSE_ENTER_TO use "to" as clause
        name in diagnostics instead of
        omp_clause_code_name[OMP_CLAUSE_CODE (c)].

2022-05-26  Marek Polacek  <polacek@redhat.com>

        PR c++/105569
        * typeck.cc (warn_for_null_address): Improve the warning when
        the POINTER_PLUS_EXPR's base is of reference type.

2022-05-26  Patrick Palka  <ppalka@redhat.com>

        PR c++/96363
        * decl.cc (shadow_tag): Use the return value of
        maybe_process_partial_specialization.
        * parser.cc (cp_parser_single_declaration): Call shadow_tag
        before associate_classtype_constraints.
        * pt.cc (maybe_new_partial_specialization): Change return type
        to bool.  Take 'type' argument by mutable reference.  Set 'type'
        to point to the correct constrained specialization when
        appropriate.
        (maybe_process_partial_specialization): Adjust accordingly.

2022-05-25  Marek Polacek  <polacek@redhat.com>

        PR c++/96637
        * cp-tree.h (attr_chainon): Declare.
        * decl.cc (start_decl): Use attr_chainon.
        (grokdeclarator): Likewise.
        * parser.cc (cp_parser_statement): No longer static.

2022-05-25  Jason Merrill  <jason@redhat.com>

        PR c++/105655
        * pt.cc (build_template_decl): Add assert.
        (tsubst_function_decl): Don't return a template.

2022-05-25  Jason Merrill  <jason@redhat.com>

        PR c++/105623
        * decl2.cc (mark_used): Copy type from fn to BASELINK.
        * pt.cc (unify_one_argument): Call mark_single_function.

2022-05-25  Jason Merrill  <jason@redhat.com>

        * constexpr.cc (cxx_eval_call_expression): Check for
        heap vars in the result.

2022-05-25  Jason Merrill  <jason@redhat.com>

        * constexpr.cc (maybe_constant_init_1): Only pass false for
        strict when initializing a variable of static duration.

2022-05-25  Marek Polacek  <polacek@redhat.com>

        PR c++/100252
        * typeck2.cc (potential_prvalue_result_of): New.
        (replace_placeholders_for_class_temp_r): New.
        (digest_nsdmi_init): Call it.

2022-05-24  Jason Merrill  <jason@redhat.com>

        * constexpr.cc (cxx_fold_indirect_ref): Add default arg.
        (cxx_eval_call_expression): Call it.
        (cxx_fold_indirect_ref_1): Handle null empty_base.

2022-05-24  Jason Merrill  <jason@redhat.com>

        * constexpr.cc (enum value_cat): New. Change all 'lval' parameters
        from int to value_cat.  Change most false to vc_prvalue, most true
        to vc_glvalue, cases where the return value is ignored to
        vc_discard.
        (cxx_eval_statement_list): Only vc_prvalue for stmt-expr result.
        (cxx_eval_store_expression): Only build _REF for vc_glvalue.
        (cxx_eval_array_reference, cxx_eval_component_reference)
        (cxx_eval_indirect_ref, cxx_eval_constant_expression): Likewise.

2022-05-24  Jason Merrill  <jason@redhat.com>

        PR c++/105622
        * constexpr.cc (cxx_eval_store_expression): Adjust assert.
        Use initialized_type.

2022-05-24  Patrick Palka  <ppalka@redhat.com>

        * cp-tree.h (any_template_arguments_need_structural_equality_p):
        Declare.
        * pt.cc (struct ctp_hasher): Define.
        (ctp_table): Define.
        (canonical_type_parameter): Use it.
        (process_template_parm): Set TYPE_CANONICAL for
        TEMPLATE_TEMPLATE_PARM too.
        (lookup_template_class_1): Remove now outdated comment for the
        any_template_arguments_need_structural_equality_p test.
        (tsubst) <case TEMPLATE_TEMPLATE_PARM, etc>: Don't specifically
        clear TYPE_CANONICAL for ttps.  Set TYPE_CANONICAL on the
        substituted type later.
        (any_template_arguments_need_structural_equality_p): Return
        true for any_targ_node.  Don't return true just because a
        template argument uses structural equality.  Add comment for
        the PARM_DECL special case.
        (rewrite_template_parm): Set TYPE_CANONICAL on the rewritten
        parm's type later.
        * tree.cc (bind_template_template_parm): Set TYPE_CANONICAL
        when safe to do so.
        * typeck.cc (structural_comptypes) [check_alias]: Increment
        processing_template_decl before checking
        dependent_alias_template_spec_p.

2022-05-24  Jakub Jelinek  <jakub@redhat.com>

        PR c/105378
        * parser.cc (OMP_TASKWAIT_CLAUSE_MASK): Add nowait clause.

2022-05-20  David Malcolm  <dmalcolm@redhat.com>

        * cxx-pretty-print.h: Replace uses of "FINAL" and "OVERRIDE" with
        "final" and "override".
        * error.cc: Likewise.

2022-05-18  Marek Polacek  <polacek@redhat.com>

        PR c++/105634
        * call.cc (maybe_warn_class_memaccess): Avoid % by zero.

2022-05-17  Jason Merrill  <jason@redhat.com>

        PR c++/102307
        * decl.cc (check_initializer): Use build_cplus_new in case of
        constexpr failure.

2022-05-17  Jakub Jelinek  <jakub@redhat.com>

        * parser.cc (cp_parser_omp_clause_depend): Parse
        inoutset depend-kind.
        (cp_parser_omp_depobj): Likewise.
        * cxx-pretty-print.cc (cxx_pretty_printer::statement): Handle
        OMP_CLAUSE_DEPEND_INOUTSET.

2022-05-16  Martin Liska  <mliska@suse.cz>

        * module.cc (depset::entity_kind_name): Use ARRAY_SIZE.
        * name-lookup.cc (get_std_name_hint): Likewise.
        * parser.cc (cp_parser_new): Likewise.

2022-05-16  Marcel Vollweiler  <marcel@codesourcery.com>

        * pt.cc (tsubst_omp_clauses): Added OMP_CLAUSE_HAS_DEVICE_ADDR.
        * semantics.cc (finish_omp_clauses): Added template decl processing.

2022-05-15  Jason Merrill  <jason@redhat.com>

        PR c++/100502
        PR c++/58993
        * friend.cc (is_friend): Hidden friends count as members.
        * search.cc (friend_accessible_p): Likewise.

2022-05-15  Jason Merrill  <jason@redhat.com>

        * parser.cc (cp_parser_template_name): Look through
        injected-class-name.

2022-05-15  Jason Merrill  <jason@redhat.com>

        PR c++/105589
        PR c++/105191
        PR c++/92385
        * init.cc (build_value_init): Handle class in template.

2022-05-13  Nathan Sidwell  <nathan@acm.org>

        * mangle.cc (maybe_write_module): Check external linkage.

2022-05-13  Richard Biener  <rguenther@suse.de>

        * constexpr.cc: Remove gimple-fold.h include.

2022-05-12  Patrick Palka  <ppalka@redhat.com>

        * cp-tree.h (TMPL_ARGS_LEVEL): Assert LEVEL is 1 when
        TMPL_ARGS_HAVE_MULTIPLE_LEVELS is false.
        * pt.cc (try_class_unification): Correctly copy multidimensional
        targs.  Free the copy of targs.
        (unify_pack_expansion): Fix level comparison.

2022-05-12  Nathan Sidwell  <nathan@acm.org>

        * parser.cc (cp_parser_linkage_specification): Implement
        global module attachment semantics.

2022-05-12  Jakub Jelinek  <jakub@redhat.com>

        * lex.cc (init_reswords): Register omp_all_memory as keyword
        if flag_openmp.
        * parser.cc (cp_parser_primary_expression): Diagnose uses of
        omp_all_memory in postfix expressions.
        (cp_parser_omp_var_list_no_open): Handle omp_all_memory in depend
        clause.
        * semantics.cc (finish_omp_clauses): Handle omp_all_memory
        keyword in depend clause as null_pointer_node, diagnose invalid
        uses.
        * pt.cc (tsubst_omp_clause_decl): Pass through omp_all_memory.

2022-05-11  Patrick Palka  <ppalka@redhat.com>

        * constraint.cc (tsubst_parameter_mapping): Convert loop over
        TREE_VEC into a range-based for loop using tree_vec_range.
        * pt.cc (iterative_hash_template_arg): Likewise.
        (template_parms_level_to_args): Likewise.
        (deducible_template_args): Likewise.
        (check_undeduced_parms): Likewise.
        (dependent_type_p_r): Likewise.
        (value_dependent_expression_p) <case NONTYPE_ARGUMENT_PACK>:
        Likewise.
        (dependent_template_arg_p): Likewise.
        * tree.cc (cp_walk_subtrees) <case NONTYPE_ARGUMENT_PACK>:
        Likewise.

2022-05-11  Jason Merrill  <jason@redhat.com>

        PR c++/105541
        * cp-tree.h (TMPL_ARGS_DEPTH): 0 for null args.
        * parser.cc (cp_parser_enclosed_template_argument_list):
        Use 0-length TREE_VEC for <>.

2022-05-11  Jason Merrill  <jason@redhat.com>

        PR bootstrap/105567
        * typeck.cc (check_return_expr): Don't mess with ctor return value
        while parsing a template.

2022-05-11  Nathan Sidwell  <nathan@acm.org>

        * cp-tree.h (DECL_MODULE_ATTACH_P): New.
        (struct lang_decl_base): Add module_attach_p flag.
        * decl.cc (duplicate_decls): Rework module redeclaration
        checking.
        * module.cc (trees_out::lang_decl_bools): Write attach flag.
        (trees_in::lang_decl_bools): ... and read it back.
        (trees_out::decl_value): Rework module attachment handling.
        (trees_in::decl_value): Rename local var to reflect meaning.
        (trees_in::key_mergeable): Likewise.
        (get_originating_module): Use DECL_MODULE_ATTACH_P.  No need
        to special-case mangling.
        (module_may_redeclare): Reimplement.
        (set_originating_module): Deal with attachment.
        * name-lookup.cc (maybe_record_mergeable_decl): Deal with
        attachment.
        (mergeable_namespace_slots): Likewise.
        (do_nonmember_using_decl): Likewise.
        * name-lookup.h (mergeable_namespace_slots): Adjust parm
        meaning.
        * ptree.cc (cxx_print_decl): Adjust purview & attach printing.

2022-05-11  Martin Liska  <mliska@suse.cz>

        PR target/105355
        * lang-specs.h: Use Separate syntax.

2022-05-10  Patrick Palka  <ppalka@redhat.com>

        * coroutines.cc (instantiate_coro_traits): Adjust accordingly.
        * cp-tree.def: Remove mention of SET_PACK_EXPANSION_PATTERN.
        * cp-tree.h (SET_PACK_EXPANSION_PATTERN): Remove.
        (SET_ARGUMENT_PACK_ARGS): Remove.
        * module.cc (trees_in::tree_node): Adjust accordingly.
        * parser.cc (make_char_string_pack): Likewise.
        (make_string_pack): Likewise.
        * pt.cc (make_pack_expansion): Likewise.
        (template_parm_to_arg): Likewise.
        (coerce_template_parameter_pack): Likewise.
        (extract_fnparm_pack): Likewise.
        (extract_locals_r): Likewise.
        (make_argument_pack): Likewise.
        (tsubst_argument_pack): Likewise.
        (lookup_init_capture_pack): Likewise.
        (type_unification_real): Likewise.
        (unify_pack_expansion): Likewise.
        (tsubst_initializer_list): Likewise.

2022-05-10  Patrick Palka  <ppalka@redhat.com>

        * cp-tree.h (PACK_EXPANSION_CHECK): Define.
        (PACK_EXPANSION_PATTERN): Use PACK_EXPANSION_CHECK.
        (SET_PACK_EXPANSION_PATTERN): Likewise.
        (PACK_EXPANSION_PARAMETER_PACKS): Likewise.
        (PACK_EXPANSION_EXTRA_ARGS): Likewise.
        (PACK_EXPANSION_LOCAL_P): Likewise.
        (PACK_EXPANSION_SIZEOF_P): Likewise.
        (PACK_EXPANSION_AUTO_P): Likewise.
        (PACK_EXPANSION_FORCE_EXTRA_ARGS_P): Likewise.
        (ARGUMENT_PACK_CHECK): Define.
        (ARGUMENT_PACK_ARGS): Use ARGUMENT_PACK_CHECK.
        (SET_ARGUMENT_PACK_ARGS): Likewise.
        * parser.cc (cp_parser_sizeof_pack): Check for error_mark_node
        before setting PACK_EXPANSION_SIZEOF_P.

2022-05-10  Nathan Sidwell  <nathan@acm.org>

        * cp-tree.h (enum module_kind_bits): Disambiguate purview,
        attach, named module vs header-unit.
        (global_purview_p, not_module_p): Delete.
        (named_module_p): New.
        (header_module_p, module_purview_p): Adjust.
        (module_attach_p, named_module_purview_p): New.
        * decl.cc (duplicate_decls): Adjust.
        * module.cc (declare_module, preprocessed_module): Adjust.
        * name-lookup.cc (init_global_partition): Adjust.
        (get_fixed_binding_slot, pushdecl): Adjust.
        * parser.cc (cp_parser_module_declaration): Adjust.
        (cp_parser_import_declaration, cp_parser_declaration): Adjust.

2022-05-10  Jason Merrill  <jason@redhat.com>

        PR c++/105529
        * decl.cc (maybe_return_this): Replace...
        (finish_constructor_body, finish_destructor_body): ...these.
        (finish_function_body): Call it.
        * optimize.cc (build_delete_destructor_body): Call it.
        * cp-tree.h (maybe_return_this): Declare.

2022-05-09  Marek Polacek  <polacek@redhat.com>

        PR c++/103539
        * parser.cc (cp_parser_statement): Constify the in_compound parameter.
        Create a modifiable copy.  Allow labels at the end of compound
        statements.

2022-05-09  Patrick Palka  <ppalka@redhat.com>

        PR c++/105491
        * call.cc (field_in_pset): Adjust after next_initializable_field
        renaming.
        (build_aggr_conv): Likewise.
        (convert_like_internal): Likewise.
        (type_has_extended_temps): Likewise.
        * class.cc (default_init_uninitialized_part): Likewise.
        (finish_struct): Likewise.
        * constexpr.cc (cx_check_missing_mem_inits): Likewise.
        (reduced_constant_expression_p): Use next_subobject_field
        instead.
        * cp-gimplify.cc (get_source_location_impl_type): Adjust after
        next_initializable_field renaming.
        (fold_builtin_source_location): Likewise.
        * cp-tree.h (next_initializable_field): Rename to ...
        (next_aggregate_field): ... this.
        (next_subobject_field): Declare.
        * decl.cc (next_aggregate_field): Renamed from ...
        (next_initializable_field): ... this.  Skip over vptr fields
        again.
        (next_subobject_field): Define.
        (reshape_init_class): Adjust after next_initializable_field
        renaming.
        * init.cc (build_value_init_noctor): Likewise.
        (emit_mem_initializers): Likewise.
        * lambda.cc (build_capture_proxy): Likewise.
        * method.cc (build_comparison_op): Likewise.
        * pt.cc (maybe_aggr_guide): Likewise.
        * tree.cc (structural_type_p): Likewise.
        * typeck2.cc (split_nonconstant_init_1): Likewise.
        (digest_init_r): Likewise.

2022-05-09  Nathan Sidwell  <nathan@acm.org>

        * cp-tree.h (DECL_MODULE_KEYED_DECLS_P): Renamed from
        DECL_MODULE_ATTACHMENTS_P.
        (struct lane_decl_base): Rename module_attached_p to
        module_keyed_decls_p.
        (maybe_key_decl): Renamed from maybe_attach_decl.
        * lambda.cc (record_lambda_scope): Adjust.
        * lex.cc (cxx_dup_lang_specific_decl): Adjust.
        * module.cc (keyed_map_t, keyed_table): Renamed from attached_map_t,
        attached_table.
        (enum merge_kind): Rename MK_attached to MK_keyed.
        (trees_out::lang_decl_bools): Adjust.
        (trees_in::lang_decl_bools): Adjust.
        (trees_in::decl_value): Adjust.
        (trees_out::get_merge_kind): Adjust.
        (trees_out::key_mergeable): Adjust.
        (trees_in::key_mergeable): Adjust.
        (maybe_key_decl): Rename from maybe_attach_decl.
        (direct_import): Adjust.
        (fini_modules): Adjust.

2022-05-09  Martin Liska  <mliska@suse.cz>

        * cp-gimplify.cc (cp_genericize_r): Use {,UN}LIKELY
        macros.
        * parser.cc (cp_finalize_omp_declare_simd): Likewise.
        (cp_finalize_oacc_routine): Likewise.

2022-05-07  Marek Polacek  <polacek@redhat.com>

        PR c++/101833
        PR c++/47634
        * tree.cc (maybe_adjust_arg_pos_for_attribute): New.

2022-05-06  Jason Merrill  <jason@redhat.com>

        * error.cc (decl_to_string): Add show_color parameter.
        (subst_to_string): Likewise.
        (cp_printer): Pass it.
        (type_to_string): Set pp_show_color.
        (dump_function_name): Use "fnname" color.
        (dump_template_bindings): Use "targs" color.
        (struct colorize_guard): New.
        (reinit_cxx_pp): Clear pp_show_color.

2022-05-06  Jason Merrill  <jason@redhat.com>

        PR c++/105245
        PR c++/100111
        * constexpr.cc (cxx_eval_store_expression): Reorganize empty base
        handling.

2022-05-05  Marek Polacek  <polacek@redhat.com>

        PR c++/64679
        * parser.cc (cp_parser_parameter_declaration_clause): Maintain
        a vector of parameters that haven't been pushed yet.  Push them at the
        end of a valid parameter-declaration-clause.
        (cp_parser_parameter_declaration_list): Take a new auto_vec parameter.
        Do not pushdecl while parsing tentatively when pushdecl-ing a parameter
        would result in a hard error.
        (cp_parser_cache_defarg): Adjust the call to
        cp_parser_parameter_declaration_list.

2022-05-05  Richard Biener  <rguenther@suse.de>

        * module.cc (trees_in::core_vals): Remove separate allocation
        for REAL_CST.

2022-05-04  Jason Merrill  <jason@redhat.com>

        PR c++/104470
        * pt.cc (maybe_dependent_member_ref): Handle types.
        (tsubst, tsubst_copy): Use it.
        (tsubst_aggr_type, instantiate_alias_template): Don't handle
        tf_dguide here.

2022-05-04  Patrick Palka  <ppalka@redhat.com>

        PR c++/105476
        * pt.cc (maybe_aggr_guide): Set processing_template_decl when
        partially instantiating the guide's parameter list.

2022-05-04  Marek Polacek  <polacek@redhat.com>

        PR c++/64679
        * parser.cc (cp_parser_init_declarator): Properly handle a series of
        operator() calls, they are not part of an init-declarator.

2022-05-04  Jason Merrill  <jason@redhat.com>

        * decl.cc (reshape_init): Shortcut already-reshaped init.
        (reshape_init_class): Assert not getting one here.

2022-05-04  Jason Merrill  <jason@redhat.com>

        * error.cc (cp_print_error_function): Use %qD.
        (function_category): Use %qD.

2022-05-04  Marek Polacek  <polacek@redhat.com>

        PR c++/105436
        * parser.cc (cp_parser_next_token_ends_template_argument_p): Don't
        return true for CPP_GREATER_EQ.

2022-05-04  Jason Merrill  <jason@redhat.com>

        * cp-tree.h (struct language_function): Remove x_cdtor_label.
        (cdtor_label, LABEL_DECL_CDTOR): Remove.
        * constexpr.cc (returns): Don't check LABEL_DECL_CDTOR.
        (cxx_eval_constant_expression): Don't call returns.
        * decl.cc (check_goto): Don't check cdtor_label.
        (start_preparsed_function): And don't set it.
        (finish_constructor_body, finish_destructor_body): Remove.
        (finish_function_body): Don't call them.
        * typeck.cc (check_return_expr): Handle cdtor_returns_this here.
        * semantics.cc (finish_return_stmt): Not here.

2022-05-04  Jakub Jelinek  <jakub@redhat.com>

        * lambda.cc: Include decl.h.
        (maybe_add_lambda_conv_op): Temporarily override deprecated_state to
        UNAVAILABLE_DEPRECATED_SUPPRESS.

2022-05-03  Patrick Palka  <ppalka@redhat.com>

        PR c++/105351
        * cp-tree.h (finish_non_static_data_member): Add defaulted
        complain parameter.
        * pt.cc (tsubst_copy_and_build): Pass complain to
        finish_non_static_data_member.
        * semantics.cc (finish_non_static_data_member): Respect complain
        parameter.
        (finish_qualified_id_expr): Pass complain to
        finish_non_static_data_member.

2022-05-02  Jason Merrill  <jason@redhat.com>

        * pt.cc (tsubst_copy_and_build) [TEMPLATE_ID_EXPR]: Copy location.
        (do_auto_deduction): Use expr location.

2022-05-02  Jason Merrill  <jason@redhat.com>

        * class.cc (maybe_note_name_used_in_class): Note in all enclosing
        classes.  Remember location of use.
        (note_name_declared_in_class): Adjust.

2022-05-02  Marek Polacek  <polacek@redhat.com>

        * cp-tree.h (uses_template_parms): Adjust declaration.
        * pt.cc (uses_template_parms): Return bool.  Use a RAII sentinel.

2022-05-02  Richard Biener  <rguenther@suse.de>

        * constexpr.cc (fold_simple_1): Use CASE_CONVERT.
        * cp-gimplify.cc (cp_fold): Likewise.
        * pt.cc (tsubst_copy): Likewise.

2022-04-29  Jason Merrill  <jason@redhat.com>

        PR c++/91618
        PR c++/96604
        * friend.cc (do_friend): Call check_explicit_specialization here.
        * decl.cc (grokdeclarator): Not here.
        * decl2.cc (check_classfn): Or here.

2022-04-29  Jason Merrill  <jason@redhat.com>

        PR c++/104470
        * cp-tree.h (enum tsubst_flags): Add tf_dguide.
        * pt.cc (tsubst_aggr_type): Check it.
        (tsubst_baselink, tsubst_copy): Check it.
        (maybe_dependent_member_ref): Check it.
        (instantiate_alias_template): Handle it.
        (build_deduction_guide): Set it.

2022-04-29  Jason Merrill  <jason@redhat.com>

        PR c++/82980
        * lambda.cc (type_deducible_expression_p): Allow more types.

2022-04-29  Jason Merrill  <jason@redhat.com>

        * decl.cc (cp_finish_decl): Only consider auto for vars.

2022-04-29  Marek Polacek  <polacek@redhat.com>

        PR c++/67048
        * parser.cc (cp_parser_enum_specifier): Warn about empty unnamed enum
        only when it's followed by a semicolon.

2022-04-29  Jason Merrill  <jason@redhat.com>

        PR c++/80351
        * decl.cc (cp_finish_decl): Check completeness of deduced type.

2022-04-29  Jason Merrill  <jason@redhat.com>

        PR c++/102987
        * error.cc (dump_decl) [USING_DECL]: Respect flags.

2022-04-29  Jason Merrill  <jason@redhat.com>

        * error.cc (dump_decl): Check TFF_UNQUALIFIED_NAME.

2022-04-29  Jakub Jelinek  <jakub@redhat.com>

        PR c++/104319
        * parser.cc (cp_parser_template_argument): Treat >= like C++98 >>
        after a type id by setting maybe_type_id and aborting tentative
        parse.
        (cp_parser_enclosed_template_argument_list): Handle
        CPP_GREATER_EQ like misspelled CPP_GREATER CPP_RQ and
        CPP_RSHIFT_EQ like misspelled CPP_GREATER CPP_GREATER_EQ
        or CPP_RSHIFT CPP_EQ or CPP_GREATER CPP_GREATER CPP_EQ.
        (cp_parser_next_token_ends_template_argument_p): Return true
        also for CPP_GREATER_EQ and CPP_RSHIFT_EQ.

2022-04-29  Iain Sandoe  <iain@sandoe.co.uk>

        PR c++/105426
        * coroutines.cc (register_local_var_uses): Allow promotion of unnamed
        temporaries to coroutine frame copies.

2022-04-29  Jason Merrill  <jason@redhat.com>

        * semantics.cc (check_trait_type): Don't check completeness
        of element type of array of unknown bound.

2022-04-29  Jason Merrill  <jason@redhat.com>

        PR c++/102651
        PR c++/49387
        * rtti.cc (get_tinfo_decl_direct): Don't complete_type.
        (emit_tinfo_decl): Update tdesc type if needed.

2022-04-29  Zhao Wei Liew  <zhaoweiliew@gmail.com>

        PR c++/25689
        * call.cc (extract_call_expr): Return a NULL_TREE on failure
        instead of asserting.
        (build_new_method_call): Suppress -Wparentheses diagnostic for
        MODIFY_EXPR.
        * semantics.cc (is_assignment_op_expr_p): Add function to check
        if an expression is a call to an op= operator expression.
        (maybe_convert_cond): Handle the case of a op= operator expression
        for the -Wparentheses diagnostic.

2022-04-28  Patrick Palka  <ppalka@redhat.com>

        PR c++/105425
        * pt.cc (unify) <case TEMPLATE_PARM_INDEX>: Treat
        DEPENDENT_OPERATOR_TYPE like an empty type.

2022-04-28  Iain Sandoe  <iain@sandoe.co.uk>

        PR c++/104051
        * coroutines.cc (coro_diagnose_throwing_final_aw_expr): Handle
        non-target expression inputs.

2022-04-28  Iain Sandoe  <iain@sandoe.co.uk>

        PR c++/105301
        * coroutines.cc (coro_promise_type_found_p): Account for possible
        mutliple overloads of the promise return_value() method.

2022-04-28  Iain Sandoe  <iain@sandoe.co.uk>

        PR c++/105287
        * coroutines.cc (maybe_promote_temps): Ensure generated temporaries
        are added to the bind expr.
        (add_var_to_bind): Fix local var naming to use portable punctuation.
        (register_local_var_uses): Do not add synthetic names to unnamed
        temporaries.

2022-04-28  Nathan Sidwell  <nathan@acm.org>
            Iain Sandoe  <iain@sandoe.co.uk>

        PR c++/103868
        * coroutines.cc (finish_co_await_expr): Do not process non-dependent
        coroutine expressions at template definition time.
        (finish_co_yield_expr): Likewise.
        (finish_co_return_stmt): Likewise.

2022-04-28  Marek Polacek  <polacek@redhat.com>

        PR c++/90107
        * parser.cc (cp_parser_class_specifier_1): Accept :: after a class
        definition.

2022-04-27  Jason Merrill  <jason@redhat.com>

        * tree.cc (strip_typedefs): Add default argument comments.

2022-04-27  Marek Polacek  <polacek@redhat.com>

        PR c++/105398
        * pt.cc (uses_template_parms): Return false for any NAMESPACE_DECL.

2022-04-26  Jason Merrill  <jason@redhat.com>

        PR c++/102629
        * pt.cc (gen_elem_of_pack_expansion_instantiation): Clear
        TEMPLATE_TYPE_PARAMETER_PACK on auto.

2022-04-26  Patrick Palka  <ppalka@redhat.com>

        PR c++/105386
        * semantics.cc (finish_decltype_type): Pass tf_decltype to
        instantiate_non_dependent_expr_sfinae.

2022-04-26  Jason Merrill  <jason@redhat.com>

        PR c++/104624
        * pt.cc (check_for_bare_parameter_packs): Check for lambda
        function parameter pack.

2022-04-26  Patrick Palka  <ppalka@redhat.com>

        PR c++/105289
        PR c++/86193
        * pt.cc (process_partial_specialization): Downgrade "partial
        specialization isn't more specialized" diagnostic from permerror
        to an on-by-default pedwarn.
        (unify) <case TEMPLATE_PARM_INDEX>: When substituting into the
        NTTP type a second time, use the original type not the
        substituted type.

2022-04-25  Marek Polacek  <polacek@redhat.com>

        PR c++/105353
        * typeck.cc (build_x_shufflevector): Use
        instantiation_dependent_expression_p except for the first two
        arguments.

2022-04-21  Marek Polacek  <polacek@redhat.com>

        * constexpr.cc (cxx_eval_logical_expression): Remove unused
        parameter.
        (cxx_eval_constant_expression) <case TRUTH_ANDIF_EXPR>,
        <case TRUTH_OR_EXPR>: Adjust calls to cxx_eval_logical_expression.

2022-04-21  Marek Polacek  <polacek@redhat.com>

        PR c++/105321
        * constexpr.cc (cxx_eval_logical_expression): Always pass false for lval
        to cxx_eval_constant_expression.

2022-04-20  Ed Catmur  <ed@catmur.uk>

        PR c++/104996
        * call.cc (compare_ics): When comparing list-initialization
        sequences, do not return early.

2022-04-19  Jakub Jelinek  <jakub@redhat.com>

        PR c++/105256
        * typeck2.cc (process_init_constructor_array,
        process_init_constructor_record, process_init_constructor_union): Move
        CONSTRUCTOR_PLACEHOLDER_BOUNDARY flag from CONSTRUCTOR elements to the
        containing CONSTRUCTOR.

2022-04-15  Marek Polacek  <polacek@redhat.com>

        PR c++/105268
        * parser.cc (cp_parser_placeholder_type_specifier): Return
        error_mark_node when trying to build up a constrained parameter in
        a default argument.

2022-04-15  Jason Merrill  <jason@redhat.com>

        PR c++/102804
        * decl.cc (grokdeclarator): Drop typedef used with 'unsigned'.

2022-04-15  Jason Merrill  <jason@redhat.com>

        PR c++/102987
        * error.cc (dump_expr): Handle USING_DECL.
        [VIEW_CONVERT_EXPR]: Just look through location wrapper.

2022-04-14  Jason Merrill  <jason@redhat.com>

        PR c++/104646
        * constexpr.cc (maybe_save_constexpr_fundef): Don't do extra
        checks for defaulted ctors.

2022-04-14  Jason Merrill  <jason@redhat.com>

        PR c++/82980
        * lambda.cc (type_deducible_expression_p): New.
        (lambda_capture_field_type): Check it.

2022-04-14  Jason Merrill  <jason@redhat.com>

        PR c++/65211
        * pt.cc (tsubst_decl) [TYPE_DECL]: Copy TYPE_ALIGN.

2022-04-14  Jason Merrill  <jason@redhat.com>

        PR c++/97219
        * name-lookup.cc (dependent_local_decl_p): New.
        * cp-tree.h (dependent_local_decl_p): Declare.
        * semantics.cc (finish_call_expr): Use it.
        * pt.cc (tsubst_arg_types): Also substitute default args
        for local externs.

2022-04-14  Jason Merrill  <jason@redhat.com>

        PR c++/101698
        * pt.cc (tsubst_baselink): Also check dependent optype.

2022-04-14  Jason Merrill  <jason@redhat.com>

        PR c++/101442
        * decl.cc (cp_finish_decl): Don't pass decl to push_cleanup.
        * init.cc (perform_member_init): Likewise.
        * semantics.cc (push_cleanup): Adjust comment.

2022-04-13  Jason Merrill  <jason@redhat.com>

        PR c++/105245
        PR c++/100111
        * constexpr.cc (cxx_eval_store_expression): Build a CONSTRUCTOR
        as needed in empty base handling.

2022-04-13  Jakub Jelinek  <jakub@redhat.com>

        PR c++/105233
        * decl2.cc (cp_check_const_attributes): For aligned attribute
        pass manifestly_const_eval=true to fold_non_dependent_expr.

2022-04-13  Marek Polacek  <polacek@redhat.com>

        PR c++/97296
        * call.cc (direct_reference_binding): strip_top_quals when creating
        a ck_qual.

2022-04-12  Jason Merrill  <jason@redhat.com>

        PR c++/104669
        * decl.cc (decls_match): Compare versions even if not recording.
        (duplicate_decls): Propagate attributes to alias.
        * decl2.cc (find_last_decl): Give up if versioned.

2022-04-12  Jason Merrill  <jason@redhat.com>

        PR c++/102071
        * init.cc (build_new_1): Check array_p for alignment.

2022-04-12  Patrick Palka  <ppalka@redhat.com>

        PR c++/103105
        * pt.cc (build_extra_args): Call preserve_args.

2022-04-12  Jason Merrill  <jason@redhat.com>

        PR c++/104142
        * decl.cc (check_initializer): Check TREE_SIDE_EFFECTS.

2022-04-12  Jason Merrill  <jason@redhat.com>

        PR c++/105223
        PR c++/92918
        * class.cc (finish_struct): Always using op=.

2022-04-11  Jason Merrill  <jason@redhat.com>

        PR c++/98249
        * call.cc (build_operator_new_call): Just look in ::.

2022-04-11  Alexandre Oliva  <oliva@adacore.com>

        * constexpr.cc (cxx_eval_call_expression): Disregard dtor
        result.

2022-04-11  Alexandre Oliva  <oliva@adacore.com>

        * semantics.cc (set_cleanup_locs): Propagate locus to call
        wrapped in cast-to-void.

2022-04-11  Jason Merrill  <jason@redhat.com>

        PR c++/100370
        * init.cc (warn_placement_new_too_small): Check deref.

2022-04-09  Jason Merrill  <jason@redhat.com>

        PR c++/105191
        PR c++/92385
        * tree.cc (build_vec_init_elt): Do {}-init for aggregates.
        * constexpr.cc (cxx_eval_vec_init): Only treat {} as value-init
        for non-aggregate types.
        (build_vec_init_expr): Also check constancy of explicit
        initializer elements.

2022-04-09  Jason Merrill  <jason@redhat.com>

        PR c++/91618
        PR c++/96604
        * name-lookup.cc (set_decl_namespace): Set
        DECL_IMPLICIT_INSTANTIATION if no non-template match.
        * pt.cc (check_explicit_specialization): Check it.
        * decl2.cc (check_classfn): Call it.

2022-04-07  Patrick Palka  <ppalka@redhat.com>

        PR c++/99479
        * name-lookup.cc (name_lookup::using_queue): Change to an
        auto_vec (with 16 elements of internal storage).
        (name_lookup::queue_namespace): Change return type to void,
        take queue parameter by reference and adjust function body
        accordingly.
        (name_lookup::do_queue_usings): Inline into ...
        (name_lookup::queue_usings): ... here.  As in queue_namespace.
        (name_lookup::search_unqualified): Don't make queue static,
        remove length variable, and adjust function body accordingly.

2022-04-07  Jakub Jelinek  <jakub@redhat.com>

        PR tree-optimization/102586
        * cp-objcp-common.h (cp_classtype_as_base): Declare.
        (LANG_HOOKS_CLASSTYPE_AS_BASE): Redefine.
        * cp-objcp-common.cc (cp_classtype_as_base): New function.

2022-04-07  Jason Merrill  <jason@redhat.com>

        PR c++/101051
        * decl.cc (grokdeclarator): Reject conversion with trailing return
        sooner.

2022-04-07  Jason Merrill  <jason@redhat.com>

        PR c++/101717
        * lambda.cc (lambda_expr_this_capture): Check all enclosing
        lambdas for completeness.

2022-04-07  Jason Merrill  <jason@redhat.com>

        PR c++/105187
        * typeck2.cc (store_init_value): Allow TREE_HAS_CONSTRUCTOR for
        vectors.

2022-04-06  Jakub Jelinek  <jakub@redhat.com>

        PR c++/104668
        * decl2.cc (splice_template_attributes): Return NULL if *p is
        error_mark_node.
        (cplus_decl_attributes): Return early if attributes is
        error_mark_node.  Don't check that later.

2022-04-06  Patrick Palka  <ppalka@redhat.com>

        PR c++/105143
        * pt.cc (do_class_deduction): Check complain before attempting
        to issue a -Wctad-maybe-unsupported warning.

2022-04-06  Jason Merrill  <jason@redhat.com>

        PR c++/104702
        * init.cc (build_vec_init): Use a reference for the result.

2022-04-06  Jason Merrill  <jason@redhat.com>

        PR c++/100608
        * name-lookup.cc (check_local_shadow): Use -Wshadow=local
        if exactly one of 'old' and 'decl' is a type.

2022-04-05  Jason Merrill  <jason@redhat.com>

        PR c++/103852
        DR 1286
        * pt.cc (do_class_deduction): Pedwarn for renaming alias in C++17.

2022-04-05  Jason Merrill  <jason@redhat.com>

        PR c++/101677
        * name-lookup.h (struct cp_binding_level): Add requires_expression
        bit-field.
        * parser.cc (cp_parser_requires_expression): Set it.
        (synthesize_implicit_template_parm): Check it.

2022-04-04  Jason Merrill  <jason@redhat.com>

        PR c++/101894
        * decl.cc (duplicate_decls): Copy DECL_FRIEND_CONTEXT.

2022-04-04  Jason Merrill  <jason@redhat.com>

        PR c++/103852
        DR 1286
        * pt.cc (get_underlying_template): Compare default template args.

2022-04-03  Benno Evers  <benno.evers@tenzir.com>
            Iain Sandoe  <iain@sandoe.co.uk>

        PR c++/103328
        * coroutines.cc (morph_fn_to_coro): Reset
        current_binding_level->blocks.

2022-04-01  Jason Merrill  <jason@redhat.com>

        Revert:
        2022-03-31  Jason Merrill  <jason@redhat.com>

        PR c++/96645
        * parser.cc (cp_parser_early_parsing_nsdmi): New.
        (cp_parser_member_declaration): Call it.

2022-04-01  Jason Merrill  <jason@redhat.com>

        Revert:
        2022-03-24  Jason Merrill  <jason@redhat.com>

        PR c++/96645
        * cp-tree.h (type_has_default_ctor_to_be_synthesized): Declare.
        * class.cc (type_has_default_ctor_to_be_synthesized): New.
        (type_has_non_user_provided_default_constructor_1): Support it.
        (type_has_non_user_provided_default_constructor): Now a wrapper.
        * method.cc (complain_about_unparsed_dmi): New.
        (constructible_expr): Call it.

2022-04-01  Patrick Palka  <ppalka@redhat.com>

        PR c++/105110
        * pt.cc (unify) <case TEMPLATE_PARM_INDEX>: Drop cv-quals from
        the argument type of an NTTP before deducing from it.

2022-03-31  Jason Merrill  <jason@redhat.com>

        PR c++/96645
        * parser.cc (cp_parser_early_parsing_nsdmi): New.
        (cp_parser_member_declaration): Call it.

2022-03-30  Patrick Palka  <ppalka@redhat.com>

        PR c++/100474
        * constraint.cc (diagnose_trait_expr): Handle all remaining
        traits appropriately.  Remove default case.

2022-03-30  Marek Polacek  <polacek@redhat.com>

        PR c++/93280
        PR c++/104583
        * init.cc (get_nsdmi): Set TARGET_EXPR_DIRECT_INIT_P to in_ctor.

2022-03-30  Jakub Jelinek  <jakub@redhat.com>

        PR c++/105092
        * pt.cc (tsubst_omp_clause_decl): When handling iterators, set
        DECL_CONTEXT of the iterator var to current_function_decl and
        call pushdecl.

2022-03-30  Jakub Jelinek  <jakub@redhat.com>

        PR c++/105061
        * parser.cc (cp_parser_template_introduction): If member_p, temporarily
        clear parser->colon_corrects_to_scope_p around tentative parsing of
        nested name specifier.

2022-03-28  Jason Merrill  <jason@redhat.com>

        * pt.cc (determine_specialization): Add comment.

2022-03-28  Patrick Palka  <ppalka@redhat.com>

        PR c++/105067
        * pt.cc (finish_concept_definition): Check that a concept is
        declared with exactly one template parameter list.

2022-03-28  Patrick Palka  <ppalka@redhat.com>

        PR c++/105064
        * constraint.cc (maybe_substitute_reqs_for): Don't assume
        DECL_TEMPLATE_INFO is available.

2022-03-28  Jason Merrill  <jason@redhat.com>

        PR c++/105003
        PR c++/104008
        PR c++/102869
        * pt.cc (complex_alias_template_r): walk_tree callback, replacing
        uses_all_template_parms_r, complex_pack_expansion_r.
        (complex_alias_template_p): Adjust.
        * tree.cc (strip_typedefs): Revert r12-7710 change.

2022-03-28  Jason Merrill  <jason@redhat.com>

        PR c++/102071
        * init.cc (build_new_1): Include cookie in alignment.  Omit
        constexpr wrapper from alloc_call.

2022-03-28  Jason Merrill  <jason@redhat.com>

        PR c++/103291
        * name-lookup.cc (push_local_extern_decl_alias): Call
        determine_visibility.

2022-03-28  Jason Merrill  <jason@redhat.com>

        PR c++/102123
        * pt.cc (tsubst_copy): Use make_unbound_class_template for rewriting
        a type template reference.

2022-03-28  Jason Merrill  <jason@redhat.com>

        PR c++/103968
        * pt.cc (value_dependent_expression_p): Check
        has_value_dependent_address for conversion to reference.

2022-03-28  Jason Merrill  <jason@redhat.com>

        PR c++/103943
        * pt.cc (tsubst_qualified_id): Handle getting SCOPE_REF from
        tsubst_baselink.
        (instantiation_dependent_scope_ref_p): Check dependent_scope_p.

2022-03-28  Jason Merrill  <jason@redhat.com>

        PR c++/102045
        * call.cc (make_base_init_ok): Call make_used.

2022-03-28  Jason Merrill  <jason@redhat.com>

        PR c++/104847
        * mangle.cc (write_expression): Don't write a union designator when
        undigested.

2022-03-28  Jason Merrill  <jason@redhat.com>

        PR c++/99445
        PR c++/103769
        * tree.cc (strip_typedefs): Use build_distinct_type_copy.

2022-03-26  Patrick Palka  <ppalka@redhat.com>

        PR c++/105050
        * constexpr.cc (potential_constant_expression_1) <case IF_STMT>:
        Clarify error message when a if-stmt is non-constant because its
        branches are non-constant.

2022-03-26  Patrick Palka  <ppalka@redhat.com>

        PR c++/103455
        * call.cc (add_builtin_candidate) <case MEMBER_REF>: Test
        CLASS_TYPE_P instead of MAYBE_CLASS_TYPE_P.

2022-03-26  Jakub Jelinek  <jakub@redhat.com>

        * parser.cc (cp_parser_postfix_expression)
        <case RID_BILTIN_CONVERTVECTOR, case RID_BUILTIN_BIT_CAST>: Don't
        return cp_build_{vec,convert,bit_cast} result right away, instead
        set postfix_expression to it and break.

2022-03-25  Marek Polacek  <polacek@redhat.com>

        PR c++/104944
        * typeck.cc (cxx_sizeof_or_alignof_type): Diagnose alignof(void).
        (cxx_alignas_expr): Call cxx_sizeof_or_alignof_type with
        complain == true.

2022-03-24  Marek Polacek  <polacek@redhat.com>

        PR c++/104284
        * decl.cc (check_initializer): Don't call build_aggr_init in
        a template.

2022-03-24  Jason Merrill  <jason@redhat.com>

        PR c++/96645
        * cp-tree.h (type_has_default_ctor_to_be_synthesized): Declare.
        * class.cc (type_has_default_ctor_to_be_synthesized): New.
        (type_has_non_user_provided_default_constructor_1): Support it.
        (type_has_non_user_provided_default_constructor): Now a wrapper.
        * method.cc (complain_about_unparsed_dmi): New.
        (constructible_expr): Call it.

2022-03-24  Marek Polacek  <polacek@redhat.com>

        PR c++/102990
        * typeck2.cc (massage_init_elt): Avoid folding CONSTRUCTORs.

2022-03-24  Patrick Palka  <ppalka@redhat.com>

        PR c++/104620
        * call.cc (build_over_call): Use cxx_constant_value_sfinae
        instead of cxx_constant_value to evaluate a consteval call.
        * constexpr.cc (cxx_constant_value_sfinae): Add decl parameter
        and pass it to cxx_eval_outermost_constant_expr.
        * cp-tree.h (cxx_constant_value_sfinae): Add decl parameter.
        * pt.cc (fold_targs_r): Pass NULL_TREE as decl parameter to
        cxx_constant_value_sfinae.

2022-03-24  Jakub Jelinek  <jakub@redhat.com>

        PR c++/104994
        * constexpr.cc (cxx_eval_constant_expression): Don't diagnose passing
        through extern thread_local declarations.  Change wording from
        declaration to definition.
        (potential_constant_expression_1): Don't diagnose extern thread_local
        declarations.  Change wording from declared to defined.
        * decl.cc (start_decl): Likewise.

2022-03-23  Jason Merrill  <jason@redhat.com>

        PR c++/103337
        * decl.cc (reshape_single_init): New.
        (reshape_init_class): Use it.

2022-03-23  Jason Merrill  <jason@redhat.com>

        PR c++/105006
        * name-lookup.cc (lookup_using_decl): Check that scope is
        a dependent type before looking for dependent using.

2022-03-23  Jason Merrill  <jason@redhat.com>

        PR c++/105006
        * name-lookup.cc (lookup_using_decl): Set DECL_DEPENDENT_P if lookup
        finds a dependent using.

2022-03-21  Jason Merrill  <jason@redhat.com>

        PR c++/58646
        * init.cc (build_vec_init): Check for vla element type.

2022-03-21  Jason Merrill  <jason@redhat.com>

        PR c++/103337
        PR c++/102740
        PR c++/103299
        PR c++/102538
        * decl.cc (reshape_init_class): Avoid looking for designator
        after we found it.
        (reshape_init_r): Keep looking for designator.

2022-03-21  Jason Merrill  <jason@redhat.com>

        PR c++/101767
        * decl.cc (reshape_init_class): Back out of anon struct
        if a designator doesn't match.

2022-03-18  Jason Merrill  <jason@redhat.com>

        PR c++/92918
        PR c++/104476
        * class.cc (add_method): Avoid adding the same used function twice.
        (handle_using_decl): Don't add_method.
        (finish_struct): Don't using op= if we have one already.
        (maybe_push_used_methods): New.
        * semantics.cc (finish_member_declaration): Call it.
        * name-lookup.cc (diagnose_name_conflict): No longer static.
        (push_class_level_binding): Revert 92918 patch, limit
        to dependent using.
        * cp-tree.h: Adjust.

2022-03-18  Jakub Jelinek  <jakub@redhat.com>

        PR c++/104568
        * init.cc (build_new_constexpr_heap_type): Remove FULL_SIZE
        argument and its handling, instead add ITYPE2 argument.  Only
        support COOKIE_SIZE != NULL.
        (build_new_1): If size is 0, change it to 0 * outer_nelts if
        outer_nelts is non-NULL.  Pass type rather than elt_type to
        maybe_wrap_new_for_constexpr.
        * constexpr.cc (build_new_constexpr_heap_type): New function.
        (cxx_eval_constant_expression) <case CONVERT_EXPR>:
        If elt_size is zero sized type, try to recover outer_nelts from
        the size argument to operator new/new[] and pass that as
        arg_size to build_new_constexpr_heap_type.  Pass ctx,
        non_constant_p and overflow_p to that call too.

2022-03-18  Marek Polacek  <polacek@redhat.com>

        PR c++/104008
        * tree.cc (strip_typedefs): Don't strip an alias template when
        doing so would result in losing a parameter pack.

2022-03-16  Patrick Palka  <ppalka@redhat.com>

        * search.cc (lookup_member): Simplify by handling all values
        of protect together in the ambiguous case.  Don't modify protect.

2022-03-16  Patrick Palka  <ppalka@redhat.com>

        PR c++/96780
        * cp-gimplify.cc (cp_fold) <case CALL_EXPR>: Fold calls to
        std::move/forward and other cast-like functions into simple
        casts.

2022-03-15  Patrick Palka  <ppalka@redhat.com>

        PR c++/103177
        * search.cc (lookup_field_info::errstr): Remove this data
        member.
        (lookup_field_r): Don't set errstr.
        (lookup_member): Check ambiguity before checking access.
        Simplify accordingly after errstr removal.  Exit early upon
        error or empty result.

2022-03-15  Jakub Jelinek  <jakub@redhat.com>

        PR c++/104623
        * parser.cc (cp_parser_skip_to_pragma_eol): Don't purge any tokens.

2022-03-14  Jakub Jelinek  <jakub@redhat.com>

        PR tree-optimization/102586
        * call.cc (build_cxx_call): Diagnose __builtin_clear_padding where
        first argument's type is pointer to non-trivially-copyable type unless
        it is address of a variable or parameter.

2022-03-12  Patrick Palka  <ppalka@redhat.com>

        PR c++/104641
        * cp-tree.h (tsubst_flags::tf_tst_ok): New flag.
        * decl.cc (make_typename_type): Allow a typename-specifier to
        resolve to a template when tf_tst_ok, in which case return
        a CTAD placeholder for the template.
        * pt.cc (tsubst_decl) <case VAR_DECL>: Set tf_tst_ok when
        substituting the type.
        (tsubst): Clear tf_tst_ok and remember if it was set.
        <case TYPENAME_TYPE>: Pass tf_tst_ok to make_typename_type
        appropriately.
        (tsubst_copy) <case CAST_EXPR>: Set tf_tst_ok when substituting
        the type.
        (tsubst_copy_and_build) <case CAST_EXPR>: Likewise.
        <case CONSTRUCTOR>: Likewise.

2022-03-12  Patrick Palka  <ppalka@redhat.com>

        PR c++/104622
        * call.cc (missing_conversion_p): Define.
        (add_candidates): Use it.
        * pt.cc (check_non_deducible_conversion): Change type of strict
        parameter to unification_kind_t and directly test for DEDUCE_CALL.

2022-03-12  Patrick Palka  <ppalka@redhat.com>

        PR c++/104527
        * constraint.cc (normalize_atom): Set
        ATOMIC_CONSTR_EXPR_FROM_CONCEPT_P appropriately.
        (get_mapped_args):  Make static, adjust parameters.  Always
        return a vector whose depth corresponds to the template depth of
        the context of the atomic constraint expression.  Micro-optimize
        by passing false as exact to safe_grow_cleared and by collapsing
        a multi-level depth-one argument vector.
        (satisfy_atom): Adjust call to get_mapped_args and
        diagnose_atomic_constraint.
        (diagnose_atomic_constraint): Replace map parameter with an args
        parameter.
        * cp-tree.h (ATOMIC_CONSTR_EXPR_FROM_CONCEPT_P): Define.
        (get_mapped_args): Remove declaration.

2022-03-12  Patrick Palka  <ppalka@redhat.com>
            Jason Merrill  <jason@redhat.com>

        PR c++/98644
        * constexpr.cc (mark_non_constant): Define, split out from ...
        (cxx_eval_outermost_constant_expr): ... here.
        (maybe_constant_value): Use it.

2022-03-12  Patrick Palka  <ppalka@redhat.com>

        * semantics.cc (finish_unary_fold_expr): Use input_location
        instead of UNKNOWN_LOCATION.
        (finish_binary_fold_expr): Likewise.

2022-03-12  Thomas Schwinge  <thomas@codesourcery.com>

        PR other/65095
        * semantics.cc (handle_omp_array_sections_1)
        (cp_oacc_check_attachments): Call 'user_omp_clause_code_name'
        instead of 'c_omp_map_clause_name'.

2022-03-10  Marek Polacek  <polacek@redhat.com>

        PR c++/104608
        * parser.cc (cp_parser_template_name): Repeat lookup of
        TYPE_DECLs.

2022-03-10  Marek Polacek  <polacek@redhat.com>

        PR c++/104752
        * semantics.cc (finish_compound_literal): Disallow auto{x} for
        is_constrained_auto.
        * typeck2.cc (build_functional_cast_1): Likewise.

2022-03-10  Marek Polacek  <polacek@redhat.com>

        PR c++/104846
        * decl.cc (grokdeclarator): Check FUNC_OR_METHOD_TYPE_P before giving
        data member errors.

2022-03-10  Jakub Jelinek  <jakub@redhat.com>

        PR c++/103460
        * decl.cc (grok_op_properties): Allow variadic operator[] for
        C++23.

2022-03-10  Roger Sayle  <roger@nextmovesoftware.com>

        PR c++/95999
        * decl.cc (finish_enum_value_list): If VALUE isn't an INTEGER_CST
        consider it to be zero (i.e. treat it like error_mark_node).
        (build_enumerator): Likewise, if PREV_VALUE isn't an INTEGER_CST,
        set VALUE to error_mark_node.

2022-03-10  Roger Sayle  <roger@nextmovesoftware.com>

        PR c++/39751
        * parser.cc (cp_parser_late_parsing_for_member): Confirm the token
        stream hasn't been purged before processing DECL_PENDING_INLINE.

2022-03-09  Patrick Palka  <ppalka@redhat.com>

        PR c++/104823
        * except.cc (build_noexcept_spec): Strengthen dependence check
        to instantiation_dependent_expression_p.
        * parser.cc (cp_parser_parenthesized_expression_list_elt):
        Remove fold_expr_p parameter, and don't call
        instantiate_non_dependent_expr.
        (cp_parser_parenthesized_expression_list): Adjust accordingly.
        * pt.cc (expand_integer_pack): Strengthen dependence check
        to instantiation_dependent_expression_p.
        (instantiate_non_dependent_expr_internal): Adjust comment.
        (instantiate_non_dependent_expr_sfinae): Likewise.  Drop
        the potentially-constant check, and relax and turn the
        dependence check into a checking assert.
        (instantiate_non_dependent_or_null): Adjust comment.
        * semantics.cc (finish_decltype_type): Keep
        processing_template_decl cleared after calling
        instantiate_non_dependent_expr_sfinae.

2022-03-09  Patrick Palka  <ppalka@redhat.com>

        PR c++/102137
        PR c++/87820
        * cp-tree.h (is_copy_initialization): Declare.
        * decl.cc (cp_finish_decl): Set LOOKUP_ONLYCONVERTING
        when is_copy_initialization is true.
        * init.cc (build_aggr_init): Split out copy-initialization
        check into ...
        (is_copy_initialization): ... here.
        * pt.cc (instantiate_decl): Pass 0 instead of
        LOOKUP_ONLYCONVERTING as flags to cp_finish_decl.

2022-03-09  Patrick Palka  <ppalka@redhat.com>

        PR c++/65396
        * cp-tree.h (merge_default_template_args): Declare.
        * decl.cc (merge_default_template_args): Define, factored out
        from redeclare_class_template.
        (duplicate_decls): Use it when merging member function template
        and free function declarations.
        * pt.cc (redeclare_class_template): Factor out default argument
        merging logic into merge_default_template_args.  Improve location
        of a note when there's a template parameter kind mismatch.

2022-03-09  Jakub Jelinek  <jakub@redhat.com>

        PR c/104711
        * constexpr.cc (cxx_eval_check_shift_p): Use TYPE_OVERFLOW_WRAPS
        instead of TYPE_UNSIGNED.
        * typeck.cc (cp_build_binary_op): Don't emit
        -Wshift-negative-value warning if TYPE_OVERFLOW_WRAPS.

2022-03-08  Roger Sayle  <roger@nextmovesoftware.com>

        PR c++/96440
        * decl.cc (start_decl): Defend against prefix_attributes being
        error_mark_node.

2022-03-08  Roger Sayle  <roger@nextmovesoftware.com>

        PR c++/96437
        * parser.cc (synthesize_implicit_template_parm): Check that
        TREE_VALUE (new_parm) isn't error_mark_node before setting its
        DECL_VIRTUAL_P.

2022-03-08  Roger Sayle  <roger@nextmovesoftware.com>

        PR c++/96329
        * parser.cc (cp_parser_linkage_specification): Treat the case where
        linkage is error_mark_node as "invalid linkage-specification".

2022-03-08  Marek Polacek  <polacek@redhat.com>

        PR c++/104108
        * pt.cc (convert_nontype_argument): Recompute
        value_dependent_expression_p after build_converted_constant_expr.

2022-03-08  Marek Polacek  <polacek@redhat.com>

        * decl2.cc (is_late_template_attribute): Do not defer attribute
        unavailable.
        * pt.cc (tsubst_enum): Set TREE_UNAVAILABLE.

2022-03-08  Jakub Jelinek  <jakub@redhat.com>

        PR c++/104806
        * search.cc (lookup_field_fuzzy_info::fuzzy_lookup_field): Ignore
        identifiers with space at the end.

2022-03-07  Jason Merrill  <jason@redhat.com>

        PR c++/104618
        * decl2.cc (mark_single_function): Look through parens and location
        wrapper.
        * typeck.cc (cp_build_addr_expr_1): Not here.

2022-03-07  Jakub Jelinek  <jakub@redhat.com>

        * parser.cc (cp_parser_omp_clause_map): Add missing space in string
        literal.

2022-03-07  Jakub Jelinek  <jakub@redhat.com>

        * cvt.cc: Fix up duplicated word issue in a comment.
        * pt.cc: Likewise.
        * module.cc: Likewise.
        * coroutines.cc: Likewise.

2022-03-04  Nathan Sidwell  <nathan@acm.org>

        * mangle.cc (is_std_substitution): Check global module.
        (is_std_substitution_char): Return bool.

2022-03-04  Nathan Sidwell  <nathan@acm.org>

        * cp-tree.h (mangle_identifier): Replace with ...
        (mangle_module_component): ... this.
        * mangle.cc (dump_substitution_candidates): Adjust.
        (add_substitution): Likewise.
        (find_substitution): Likewise.
        (unmangled_name_p): Likewise.
        (mangle_module_substitution): Reimplement.
        (mangle_module_component): New.
        (write_module, maybe_write_module): Adjust.
        (write_name): Drop modules here.
        (write_unqualified): Do them here instead.
        (mangle_global_init): Adjust.
        * module.cc (module_state::mangle): Adjust.
        (mangle_module): Likewise.
        (get_originating_module): Adjust.

2022-02-28  Marek Polacek  <polacek@redhat.com>

        PR c++/104682
        * cp-tree.h (build_enumerator): Adjust.
        * decl.cc (finish_enum): Make it return the new decl.
        * pt.cc (tsubst_enum): Propagate TREE_DEPRECATED and TREE_UNAVAILABLE.

2022-02-28  Marek Polacek  <polacek@redhat.com>

        PR c++/104667
        * decl2.cc (is_late_template_attribute): Cope with a decl without
        a type.

2022-02-27  Jason Merrill  <jason@redhat.com>

        PR c++/104618
        * typeck.cc (cp_build_addr_expr_1): Also
        maybe_undo_parenthesized_ref.

2022-02-24  Martin Liska  <mliska@suse.cz>

        * pt.cc (defarg_insts_for): Use braces for subobject.

2022-02-18  Patrick Palka  <ppalka@redhat.com>

        PR c++/94944
        * pt.cc (maybe_instantiate_noexcept): For non-static member
        functions, set current_class_ptr/ref to the specialized 'this'
        instead.

2022-02-17  Jason Merrill  <jason@redhat.com>

        PR c++/104539
        * pt.cc (mark_decl_instantiated): Don't clear DECL_COMDAT.

2022-02-17  Jason Merrill  <jason@redhat.com>

        PR c++/90451
        * decl2.cc (mark_single_function): New.
        * cp-tree.h: Declare it.
        * typeck.cc (cp_build_addr_expr_1): mark_used when making a PMF.
        * semantics.cc (finish_qualified_id_expr): Not here.
        (finish_id_expression_1): Or here.
        (finish_decltype_type): Call mark_single_function.
        * cvt.cc (convert_to_void): And here.
        * pt.cc (convert_nontype_argument): And here.
        * init.cc (build_offset_ref): Adjust assert.

2022-02-17  Patrick Palka  <ppalka@redhat.com>

        PR c++/104565
        * semantics.cc (finish_compound_literal): Don't perform
        non-dependent expr folding before calling check_narrowing.

2022-02-16  Patrick Palka  <ppalka@redhat.com>

        PR c++/104507
        * constexpr.cc (potential_constant_expression_1)
        <case NON_DEPENDENT_EXPR>: Return false instead of recursing.
        Assert tf_error isn't set.

2022-02-15  Jason Merrill  <jason@redhat.com>

        PR c++/104107
        PR c++/95036
        * pt.cc (coerce_template_template_parms): Take full parms.
        Avoid adding too much of outer_args.
        (coerce_template_template_parm): Adjust.
        (template_template_parm_bindings_ok_p): Adjust.
        (convert_template_argument): Adjust.

2022-02-14  Jakub Jelinek  <jakub@redhat.com>

        PR c++/104513
        * constexpr.cc (potential_constant_expression_1) <case GOTO_EXPR>:
        Don't punt if returns (target).

2022-02-11  Jakub Jelinek  <jakub@redhat.com>

        PR c++/104472
        * constexpr.cc (cxx_eval_internal_function) <case IFN_VEC_CONVERT>:
        Only return fold_const_call result if it is non-NULL.  Otherwise
        fall through into the default: case to return t, set *non_constant_p
        and emit diagnostics if needed.

2022-02-10  Jason Merrill  <jason@redhat.com>

        * module.cc (depset::hash::add_specializations): Use
        STRIP_TEMPLATE.

2022-02-10  Tobias Burnus  <tobias@codesourcery.com>

        PR c++/102204
        * decl2.cc (cp_omp_mappable_type_1): Remove check for virtual
        members as those are permitted since OpenMP 5.0.

2022-02-10  Patrick Palka  <ppalka@redhat.com>

        * pt.cc (filter_memfn_lookup): Handle dependent USING_DECL
        better.

2022-02-10  Marcel Vollweiler  <marcel@codesourcery.com>

        * parser.cc (cp_parser_omp_clause_name): Parse 'has_device_addr' clause.
        (cp_parser_omp_var_list_no_open): Handle array sections.
        (cp_parser_omp_all_clauses): Added PRAGMA_OMP_CLAUSE_HAS_DEVICE_ADDR
        case.
        (cp_parser_omp_target_update): Added HAS_DEVICE_ADDR to OMP_CLAUSE_MASK.
        * semantics.cc (handle_omp_array_sections): Handle clause restrictions.
        (finish_omp_clauses): Handle array sections.

2022-02-09  Patrick Palka  <ppalka@redhat.com>

        PR c++/104432
        * call.cc (build_new_method_call): When a non-dependent call
        resolves to a specialization of a member template, always build
        the pruned overload set using the member template, not the
        specialization.
        * pt.cc (filter_memfn_lookup): New parameter newtype.  Simplify
        and correct how members from the new lookup set are matched to
        those from the old one.
        (tsubst_baselink): Pass binfo_type as newtype to
        filter_memfn_lookup.

2022-02-09  Jason Merrill  <jason@redhat.com>

        PR c++/103752
        * module.cc (trees_out::core_vals): Stream explicit specifier.
        (trees_in::core_vals): Likewise.
        * pt.cc (store_explicit_specifier): No longer static.
        (tsubst_function_decl): Clear DECL_HAS_DEPENDENT_EXPLICIT_SPEC_P.
        * cp-tree.h (lookup_explicit_specifier): Declare.

2022-02-09  Jason Merrill  <jason@redhat.com>

        PR c++/96876
        * typeck2.cc (split_nonconstant_init_1): Push cleanups for
        preceding members with constant initialization.
        (maybe_push_temp_cleanup): Do nothing if -fno-exceptions.

2022-02-08  Jakub Jelinek  <jakub@redhat.com>

        PR c++/104379
        * name-lookup.cc (check_local_shadow): When diagnosing shadowing
        of a member or global declaration, add warning suppression for
        the decl and don't warn again on it.

2022-02-08  Jakub Jelinek  <jakub@redhat.com>

        PR c++/104403
        * constexpr.cc (cxx_eval_constant_expression): Don't assert DECL_EXPRs
        of TREE_STATIC vars may only appear in -std=c++23.

2022-02-08  Patrick Palka  <ppalka@redhat.com>

        PR c++/80951
        * pt.cc (uses_deducible_template_parms): Consider the
        noexcept-spec of a function type.

2022-02-08  Patrick Palka  <ppalka@redhat.com>

        PR c++/104410
        * constraint.cc (satisfaction_value): Relax assert to accept
        cv-qualified bool.

2022-02-08  Patrick Palka  <ppalka@redhat.com>

        PR c++/103706
        * pt.cc (preserve_args): New function.
        (tsubst_lambda_expr): Use it when setting LAMBDA_EXPR_REGEN_INFO.

2022-02-08  Patrick Palka  <ppalka@redhat.com>

        PR c++/103706
        * constraint.cc (satisfy_declaration_constraints): Use
        lambda_regenerating_args instead.
        * cp-tree.h (lambda_regenerating_args): Declare.
        * pt.cc (lambda_regenerating_args): Define, split out from
        satisfy_declaration_constraints.
        (do_auto_deduction): Use lambda_regenerating_args to obtain the
        full set of outer template arguments for satisfaction when
        inside a lambda.

2022-02-06  Patrick Palka  <ppalka@redhat.com>

        PR c++/96242
        * decl2.cc (mark_used): Directly synthesize a DECL_MAYBE_DELETED
        fn by calling maybe_synthesize_method instead of relying on
        maybe_instantiate_noexcept.  Move call to m_i_n after the
        DECL_DELETED_FN handling.
        * pt.cc (maybe_instantiate_noexcept): Restrict DECL_MAYBE_DELETED
        fn synthesis to only those with an implicit noexcept-spec, and
        return !DECL_DELETED_FN instead of !DECL_MAYBE_DELETED afterwards.

2022-02-06  Jakub Jelinek  <jakub@redhat.com>

        PR c++/89074
        PR c++/104033
        * constexpr.cc (cxx_eval_binary_expression): Temporarily set
        folding_cxx_constexpr.

2022-02-05  Jason Merrill  <jason@redhat.com>

        PR c++/104300
        PR c++/92385
        * cp-tree.h (get_vec_init_expr): New.
        (target_expr_needs_replace): New.
        * cp-gimplify.cc (cp_gimplify_init_expr): Use it.
        (struct cp_fold_data): New.
        (cp_fold_r): Only genericize inits at end of fn.
        (cp_fold_function): Here.
        (cp_fully_fold_init): Not here.
        * init.cc (build_vec_init): Use get_vec_init_expr.
        * tree.cc (build_vec_init_expr): Likewise.
        * typeck2.cc (split_nonconstant_init_1): Likewise.
        (process_init_constructor): Wrap VEC_INIT_EXPR in
        TARGET_EXPR.

2022-02-05  Jason Merrill  <jason@redhat.com>

        * pt.cc (iterative_hash_template_arg): Add comment.

2022-02-03  Patrick Palka  <ppalka@redhat.com>

        PR c++/104079
        * pt.cc (value_dependent_noexcept_spec_p): New predicate split
        out from ...
        (dependent_type_p_r): ... here.
        (instantiation_dependent_r): Use value_dependent_noexcept_spec_p
        to consider dependence of a noexcept-spec before C++17.
        * tree.cc (fixup_deferred_exception_variants): Clear
        TYPE_DEPENDENT_P_VALID.

2022-02-03  Jason Merrill  <jason@redhat.com>

        PR c++/104302
        * decl.cc (maybe_deduce_size_from_array_init): Give up
        on type-dependent init.
        (cp_complete_array_type): Only call reshape_init for character
        array.

2022-02-01  Jason Merrill  <jason@redhat.com>

        PR c++/103186
        * pt.cc (defarg_inst): Use tree_vec_map_cache_hasher.
        (defarg_insts_for): New.
        (tsubst_default_argument): Adjust.

2022-01-31  Marek Polacek  <polacek@redhat.com>

        PR c++/102414
        PR c++/101874
        * decl.cc (create_array_type_for_decl): Use template_placeholder_p.
        Sorry on a variable-length array of auto.

2022-01-31  Marek Polacek  <polacek@redhat.com>

        PR c++/102434
        * class.cc (finish_struct): Don't allow union initializer_list.

2022-01-31  Patrick Palka  <ppalka@redhat.com>

        PR c++/104294
        * pt.cc (ctor_deduction_guides_for): Correct computation of
        outer_args.

2022-01-31  Patrick Palka  <ppalka@redhat.com>

        PR c++/104291
        * pt.cc (for_each_template_parm_r) <case CONSTRUCTOR>: Clear
        walk_subtrees if !include_nondeduced_p.  Simplify given that
        cp_walk_subtrees already walks TYPE_PTRMEMFUNC_FN_TYPE_RAW.

2022-01-28  Patrick Palka  <ppalka@redhat.com>
            Jason Merrill  <jason@redhat.com>

        PR c++/92752
        * typeck.cc (build_ptrmemfunc): Cast a nullptr constant to the
        unqualified pointer type not the qualified one.

2022-01-28  Patrick Palka  <ppalka@redhat.com>

        PR c++/103341
        * decl.cc (cp_finish_decl): Pass the template arguments of a
        variable template specialization or a templated static data
        member to do_auto_deduction when the auto is constrained.

2022-01-28  Jason Merrill  <jason@redhat.com>

        PR c++/100198
        PR c++/100030
        PR c++/100282
        * parser.cc (cp_parser_enumerator_definition): Sorry on parameter
        pack in lambda.
        (cp_parser_class_head): And in class attributes.
        * pt.cc (check_for_bare_parameter_packs): Sorry instead of error
        in lambda.

2022-01-27  Jason Merrill  <jason@redhat.com>

        PR c++/104245
        PR c++/51344
        * decl2.cc (save_template_attributes): Take late attrs as parm.
        (cplus_decl_attributes): Call it after decl_attributes,
        splice_template_attributes before.

2022-01-27  Patrick Palka  <ppalka@redhat.com>

        PR c++/99895
        * call.cc (build_over_call): For a non-dependent member call,
        build up a CALL_EXPR using a COMPONENT_REF callee, as in
        build_new_method_call.
        * pt.cc (build_non_dependent_expr): Don't wrap PARM_DECL either.
        * tree.cc (build_min_non_dep_op_overload): Adjust accordingly
        after the build_over_call change.

2022-01-27  Patrick Palka  <ppalka@redhat.com>

        PR c++/92944
        PR c++/103678
        * parser.cc (cp_parser_class_head): Update 'type' with the result
        of maybe_process_partial_specialization in the
        nested_name_specifier branch.  Refactor nearby code to accomodate
        that maybe_process_partial_specialization returns a _TYPE, not a
        TYPE_DECL, and eliminate local variable 'class_type' in passing.

2022-01-27  Marek Polacek  <polacek@redhat.com>

        PR c++/101988
        * decl.cc (create_array_type_for_decl): Reject forming an array of
        placeholder for a deduced class type.

2022-01-26  Jason Merrill  <jason@redhat.com>

        PR c++/104206
        PR c++/101072
        * semantics.cc (finish_compound_literal): Restore VECTOR_TYPE check.

2022-01-26  Jakub Jelinek  <jakub@redhat.com>

        PR c++/104226
        * constexpr.cc (init_subob_ctx): For vector ctors containing
        vector elements, ensure appending to the same ctor instead of
        creating another one.

2022-01-26  Marek Polacek  <polacek@redhat.com>

        PR target/104213
        * decl.cc (finish_constructor_body): Suppress -Wuse-after-free.
        (finish_destructor_body): Likewise.
        * optimize.cc (build_delete_destructor_body): Likewise.

2022-01-26  Jason Merrill  <jason@redhat.com>

        PR c++/104235
        * parser.cc (cp_parser_template_name): Repeat lookup of USING_DECL.

2022-01-26  Jason Merrill  <jason@redhat.com>

        PR c++/103057
        * pt.cc (tsubst_aggr_type): Call tsubst for alias template
        specialization.

2022-01-25  Patrick Palka  <ppalka@redhat.com>

        PR c++/101532
        PR c++/104225
        * decl2.cc (mark_used): Don't consider maybe_instantiate_noexcept
        on a deleted function.

2022-01-25  Jason Merrill  <jason@redhat.com>

        PR c++/59950
        * call.cc (build_over_call): Use cp_build_indirect_ref.

2022-01-24  Patrick Palka  <ppalka@redhat.com>

        PR c++/104197
        * pt.cc (make_auto_1): Use -1 as a placeholder default argument
        for level.

2022-01-24  Patrick Palka  <ppalka@redhat.com>

        PR c++/104173
        * typeck.cc (build_class_member_access_expr): Extend
        unary_complex_lvalue result adjustment to preserve all
        rvalues, not just xvalues.

2022-01-23  Will Wray  <wjwray@gmail.com>

        PR c++/55227
        * decl.cc (reshape_init_r): Only call has_designator_check when
        first_initializer_p or for the inner constructor element.
        (cp_complete_array_type): Call reshape_init on braced-init-list.

2022-01-23  Jason Merrill  <jason@redhat.com>

        PR c++/104182
        * cp-gimplify.cc (cp_genericize_target_expr): Make sure nothing
        has set DECL_INITIAL on a TARGET_EXPR slot.
        * tree.cc (is_local_temp): Don't check DECL_CONTEXT.

2022-01-23  Jason Merrill  <jason@redhat.com>

        PR c++/101072
        * cp-tree.h (build_implicit_conv_flags): Declare.
        * call.cc (build_implicit_conv_flags): Split out from...
        (perform_implicit_conversion_flags): ...here.
        * decl.cc (check_initializer): Use it.
        * pt.cc (tsubst_copy_and_build): Remove TARGET_EXPR handling.
        * semantics.cc (finish_compound_literal): Don't treat
        scalar values like CONSTRUCTORs.

2022-01-21  Jason Merrill  <jason@redhat.com>

        * semantics.cc (find_failing_clause): Return expr if not
        decomposable.
        (finish_static_assert): Show constant values in failing
        comparison.

2022-01-21  Jason Merrill  <jason@redhat.com>

        PR c++/104084
        PR c++/20040
        * init.cc (build_new_1): Only pull out TARGET_EXPR_INITIAL if
        alloc_expr is a TARGET_EXPR.

2022-01-21  Marek Polacek  <polacek@redhat.com>

        PR c++/101715
        * tree.cc (fixup_deferred_exception_variants): Remove duplicate
        variants after parsing the exception specifications.

2022-01-21  Jason Merrill  <jason@redhat.com>

        PR c++/104139
        PR c++/103681
        * class.cc (end_of_class): Use base_binfo.

2022-01-20  Jason Merrill  <jason@redhat.com>

        PR c++/101405
        * decl.cc (reshape_init_class): Reject designator for a member of
        another class.

2022-01-20  Patrick Palka  <ppalka@redhat.com>

        PR c++/91911
        PR c++/103672
        * pt.cc (keep_template_parm): Punt on a level 0 template parm.
        (tsubst_decl) <case VAR_DECL>: Remove !CHECKING_P safeguard.
        (tsubst) <case TEMPLATE_TYPE_PARM>: Handle CTAD placeholders
        specially.
        (make_auto_1): Add defaulted 'level' parameter.
        (make_template_placeholder): Pass 0 as 'level' to make_auto_1.

2022-01-20  Patrick Palka  <ppalka@redhat.com>

        * decl.cc (grokdeclarator): Diagnose a CTAD placeholder as
        function return type even when !funcdecl_p.

2022-01-20  Martin Liska  <mliska@suse.cz>

        PR c++/104134
        * error.cc (dump_aggr_type): Partially disable the warning.

2022-01-20  Jason Merrill  <jason@redhat.com>

        PR c++/102300
        * parser.cc (cp_parser_template_name): Use dependent_scope_p.

2022-01-19  David Malcolm  <dmalcolm@redhat.com>

        * cp-lang.cc (selftest::run_cp_tests): Update calls for .c to .cc
        renaming.
        * cp-tree.h (cp_pt_c_tests): Rename to...
        (cp_pt_cc_tests): ...this.
        (cp_tree_c_tests): Rename to...
        (cp_tree_cc_tests): ...this.
        * pt.cc (cp_pt_c_tests): Rename to...
        (cp_pt_cc_tests): ...this.
        * tree.cc (cp_tree_c_tests): Rename to...
        (cp_tree_cc_tests): ...this.

2022-01-19  Jason Merrill  <jason@redhat.com>

        * parser.cc (saved_token_sentinel::rollback): Use
        cp_lexer_previous_token.

2022-01-18  Jakub Jelinek  <jakub@redhat.com>

        PR c++/104055
        * constexpr.cc (cxx_eval_outermost_constant_expr): If t is a
        TARGET_EXPR with TARGET_EXPR_CLEANUP, use get_target_expr rather
        than get_target_expr_sfinae with tf_no_cleanup, and don't set
        TREE_CONSTANT.

2022-01-18  Jason Merrill  <jason@redhat.com>
            Jakub Jelinek   <jakub@redhat.com>

        PR c++/104025
        * parser.cc (saved_token_sentinel::rollback): Call
        cp_lexer_set_source_position.
        (~saved_token_sentinel): Call rollback.

2022-01-18  Patrick Palka  <ppalka@redhat.com>

        PR c++/104074
        * pt.cc (invalid_nontype_parm_type_p): Use WILDCARD_TYPE_P so
        that we return false for DEPENDENT_OPERATOR_TYPE too.

2022-01-17  Martin Liska  <mliska@suse.cz>

        * Make-lang.in: Rename .c names to .cc.
        * config-lang.in: Likewise.
        * constexpr.cc (cxx_eval_constant_expression): Likewise.
        * coroutines.cc (morph_fn_to_coro): Likewise.
        * cp-gimplify.cc (cp_gimplify_expr): Likewise.
        * cp-lang.cc (struct lang_hooks): Likewise.
        (get_template_argument_pack_elems_folded): Likewise.
        * cp-objcp-common.cc (cp_tree_size): Likewise.
        (cp_unit_size_without_reusable_padding): Likewise.
        (pop_file_scope): Likewise.
        (cp_pushdecl): Likewise.
        * cp-objcp-common.h (GCC_CP_OBJCP_COMMON): Likewise.
        (cxx_simulate_record_decl): Likewise.
        * cp-tree.h (struct named_label_entry): Likewise.
        (current_function_return_value): Likewise.
        (more_aggr_init_expr_args_p): Likewise.
        (get_function_version_dispatcher): Likewise.
        (common_enclosing_class): Likewise.
        (strip_fnptr_conv): Likewise.
        (current_decl_namespace): Likewise.
        (do_aggregate_paren_init): Likewise.
        (cp_check_const_attributes): Likewise.
        (qualified_name_lookup_error): Likewise.
        (generic_targs_for): Likewise.
        (mark_exp_read): Likewise.
        (is_global_friend): Likewise.
        (maybe_reject_flexarray_init): Likewise.
        (module_token_lang): Likewise.
        (handle_module_option): Likewise.
        (literal_integer_zerop): Likewise.
        (build_extra_args): Likewise.
        (build_if_nonnull): Likewise.
        (maybe_check_overriding_exception_spec): Likewise.
        (finish_omp_target_clauses): Likewise.
        (maybe_warn_zero_as_null_pointer_constant): Likewise.
        (cxx_print_error_function): Likewise.
        (decl_in_std_namespace_p): Likewise.
        (merge_exception_specifiers): Likewise.
        (mangle_module_global_init): Likewise.
        (cxx_block_may_fallthru): Likewise.
        (fold_builtin_source_location): Likewise.
        (enum cp_oracle_request): Likewise.
        (subsumes): Likewise.
        (cp_finish_injected_record_type): Likewise.
        (vtv_build_vtable_verify_fndecl): Likewise.
        (cp_tree_c_finish_parsing): Likewise.
        * cvt.cc (diagnose_ref_binding): Likewise.
        (convert_to_void): Likewise.
        (convert_force): Likewise.
        (type_promotes_to): Likewise.
        * decl.cc (make_unbound_class_template_raw): Likewise.
        (cxx_init_decl_processing): Likewise.
        (check_class_member_definition_namespace): Likewise.
        (cxx_maybe_build_cleanup): Likewise.
        * decl2.cc (maybe_emit_vtables): Likewise.
        * error.cc (dump_function_name): Likewise.
        * init.cc (is_class_type): Likewise.
        (build_new_1): Likewise.
        * lang-specs.h: Likewise.
        * method.cc (make_alias_for_thunk): Likewise.
        * module.cc (specialization_add): Likewise.
        (module_state::read_cluster): Likewise.
        * name-lookup.cc (check_extern_c_conflict): Likewise.
        * name-lookup.h (struct cxx_binding): Likewise.
        * parser.cc (cp_parser_identifier): Likewise.
        * parser.h (struct cp_parser): Likewise.
        * pt.cc (has_value_dependent_address): Likewise.
        (push_tinst_level_loc): Likewise.
        * semantics.cc (finish_omp_clauses): Likewise.
        (finish_omp_atomic): Likewise.
        * tree.cc (cp_save_expr): Likewise.
        (cp_free_lang_data): Likewise.
        * typeck.cc (cp_common_type): Likewise.
        (strip_array_domain): Likewise.
        (rationalize_conditional_expr): Likewise.
        (check_return_expr): Likewise.
        * vtable-class-hierarchy.cc: Likewise.

2022-01-17  Martin Liska  <mliska@suse.cz>

        * call.c: Moved to...
        * call.cc: ...here.
        * class.c: Moved to...
        * class.cc: ...here.
        * constexpr.c: Moved to...
        * constexpr.cc: ...here.
        * cp-gimplify.c: Moved to...
        * cp-gimplify.cc: ...here.
        * cp-lang.c: Moved to...
        * cp-lang.cc: ...here.
        * cp-objcp-common.c: Moved to...
        * cp-objcp-common.cc: ...here.
        * cp-ubsan.c: Moved to...
        * cp-ubsan.cc: ...here.
        * cvt.c: Moved to...
        * cvt.cc: ...here.
        * cxx-pretty-print.c: Moved to...
        * cxx-pretty-print.cc: ...here.
        * decl.c: Moved to...
        * decl.cc: ...here.
        * decl2.c: Moved to...
        * decl2.cc: ...here.
        * dump.c: Moved to...
        * dump.cc: ...here.
        * error.c: Moved to...
        * error.cc: ...here.
        * except.c: Moved to...
        * except.cc: ...here.
        * expr.c: Moved to...
        * expr.cc: ...here.
        * friend.c: Moved to...
        * friend.cc: ...here.
        * g++spec.c: Moved to...
        * g++spec.cc: ...here.
        * init.c: Moved to...
        * init.cc: ...here.
        * lambda.c: Moved to...
        * lambda.cc: ...here.
        * lex.c: Moved to...
        * lex.cc: ...here.
        * mangle.c: Moved to...
        * mangle.cc: ...here.
        * method.c: Moved to...
        * method.cc: ...here.
        * name-lookup.c: Moved to...
        * name-lookup.cc: ...here.
        * optimize.c: Moved to...
        * optimize.cc: ...here.
        * parser.c: Moved to...
        * parser.cc: ...here.
        * pt.c: Moved to...
        * pt.cc: ...here.
        * ptree.c: Moved to...
        * ptree.cc: ...here.
        * rtti.c: Moved to...
        * rtti.cc: ...here.
        * search.c: Moved to...
        * search.cc: ...here.
        * semantics.c: Moved to...
        * semantics.cc: ...here.
        * tree.c: Moved to...
        * tree.cc: ...here.
        * typeck.c: Moved to...
        * typeck.cc: ...here.
        * typeck2.c: Moved to...
        * typeck2.cc: ...here.
        * vtable-class-hierarchy.c: Moved to...
        * vtable-class-hierarchy.cc: ...here.

2022-01-17  Jakub Jelinek  <jakub@redhat.com>

        PR c++/104031
        * cp-gimplify.c (cp_genericize_target_expr): Set DECL_CONTEXT of
        TARGET_EXPR_SLOT to current_function_decl if it was NULL.

2022-01-17  Andrew Stubbs  <ams@codesourcery.com>

        * parser.c (cp_parser_omp_requires): Don't "sorry" dynamic_allocators.

2022-01-14  Chung-Lin Tang  <cltang@codesourcery.com>

        PR c++/103705
        * semantics.c (finish_omp_clauses): Also continue peeling off of
        outer node for ARRAY_REFs.

2022-01-14  Jakub Jelinek  <jakub@redhat.com>

        PR c++/103991
        * cp-objcp-common.c (cxx_block_may_fallthru) <case IF_STMT>: For
        IF_STMT_CONSTEXPR_P with constant false or true condition only
        check if the taken clause may fall through.
        * cp-gimplify.c (genericize_if_stmt): For consteval if, revert
        to r12-5638^ behavior if then_ block can't fall through.  For
        constexpr if, revert to r12-5638^ behavior.

2022-01-13  Anthony Sharp  <anthonysharp15@gmail.com>
            Jason Merrill  <jason@redhat.com>

        PR c++/70417
        * parser.c (cp_parser_id_expression): Handle
        -Wmissing-template-keyword.
        (struct saved_token_sentinel): Add modes to control what happens
        on destruction.
        (cp_parser_statement): Adjust.
        (cp_parser_skip_entire_template_parameter_list): New function that
        skips an entire template parameter list.
        (cp_parser_require_end_of_template_parameter_list): Rename old
        cp_parser_skip_to_end_of_template_parameter_list.
        (cp_parser_skip_to_end_of_template_parameter_list): Refactor to be
        called from one of the above two functions.
        (cp_parser_lambda_declarator_opt)
        (cp_parser_explicit_template_declaration)
        (cp_parser_enclosed_template_argument_list): Adjust.

2022-01-12  Jakub Jelinek  <jakub@redhat.com>
            Jason Merrill  <jason@redhat.com>

        PR c++/103480
        * tree.c (move): If expr is xvalue_p, just return expr without
        build_static_cast.

2022-01-11  Jakub Jelinek  <jakub@redhat.com>

        PR c++/101597
        * class.c (build_vfn_ref): Build OBJ_TYPE_REF with INTEGER_CST
        OBJ_TYPE_REF_TOKEN with type equal to OBJ_TYPE_REF_OBJECT type.
        * error.c (resolve_virtual_fun_from_obj_type_ref): Use type of
        OBJ_TYPE_REF_TOKEN rather than type of OBJ_TYPE_REF_OBJECT as
        obj_type.

2022-01-11  Patrick Palka  <ppalka@redhat.com>

        PR c++/103831
        * call.c (build_new_method_call): Consider dependent bases only
        if 'this' is available.

2022-01-11  Olivier Hainque  <hainque@adacore.com>

        * decl.c (cxx_init_decl_processing): Move code possibly
        altering flag_weak before code testing it.

2022-01-10  Patrick Palka  <ppalka@redhat.com>

        PR c++/103879
        * constexpr.c (cxx_fold_indirect_ref): Split out object/offset
        canonicalization step into a local lambda.  Strengthen it to
        absorb more components at position 0.  Use it before both calls
        to cxx_fold_indirect_ref_1.

2022-01-10  Patrick Palka  <ppalka@redhat.com>

        PR c++/103783
        * call.c (cand_parms_match): Skip over 'this' when given one
        static and one non-static member function.

2022-01-10  Jakub Jelinek  <jakub@redhat.com>

        PR c++/103912
        * semantics.c (expand_or_defer_fn): For immediate functions, set
        node->body_removed to true and clear analyzed, definition and
        force_output.
        * decl2.c (c_parse_final_cleanups): Ignore immediate functions for
        expand_or_defer_fn.

2022-01-08  Jakub Jelinek  <jakub@redhat.com>

        PR c++/89074
        * constexpr.c (cxx_maybe_fold_addr_pointer_plus): New function.
        (cxx_eval_binary_expression): Use it.

2022-01-08  Jason Merrill  <jason@redhat.com>

        PR c++/103946
        * init.c (build_vec_init): Remove assert.
        * tree.c (build_vec_init_expr): Likewise.

2022-01-08  Jason Merrill  <jason@redhat.com>

        PR c++/100588
        * call.c (build_op_delete_call): Ignore destroying delete
        if alloc_fn.

2022-01-07  Jason Merrill  <jason@redhat.com>

        PR c++/20040
        * init.c (build_new_1): Also build pointer cleanup if
        TYPE_GETS_DELETE.
        * cp-tree.h (TYPE_GETS_VEC_DELETE): New.

2022-01-07  Jason Merrill  <jason@redhat.com>

        PR c++/103936
        PR c++/65591
        * cp-gimplify.c (cp_gimplify_expr): Restore VEC_INIT_EXPR handling.

2022-01-07  Jason Merrill  <jason@redhat.com>

        PR c++/103711
        * init.c (perform_target_ctor): Select destructor by in_chrg.

2022-01-07  Jason Merrill  <jason@redhat.com>

        PR c++/61611
        * except.c (in_nested_catch): New.
        (expand_end_catch_block): Check it.

2022-01-07  Jason Merrill  <jason@redhat.com>

        PR c++/33799
        PR c++/102191
        * except.c (maybe_splice_retval_cleanup): Check
        current_binding_level.
        * semantics.c (do_poplevel): Call it here.
        * parser.c (cp_parser_compound_statement): Not here.

2022-01-07  Jason Merrill  <jason@redhat.com>

        PR c++/53868
        * decl.c (cp_finish_decl): Use wrap_temporary_cleanups for
        cleanups from set_up_extended_ref_temp.
        (wrap_temporary_cleanups): Ignore array cleanups.
        (initialize_local_var): Don't check for array here.
        * cp-tree.h (BIND_EXPR_VEC_DTOR): New.
        * init.c (build_vec_delete_1): Set it.

2022-01-07  Jason Merrill  <jason@redhat.com>

        PR c++/66451
        * init.c (build_vec_delete_1): Handle throwing dtor.
        (build_vec_init): Tell it we're in a cleanup already.

2022-01-07  Jason Merrill  <jason@redhat.com>

        * typeck2.c (split_nonconstant_init_1): Don't cleanup the last elt.
        (split_nonconstant_init): Adjust.

2022-01-07  Jason Merrill  <jason@redhat.com>

        PR c++/66139
        PR c++/52320
        * constexpr.c (replace_decl): Rename from replace_result_decl.
        * cp-tree.h (replace_decl): Declare it.
        * cp-gimplify.c (cp_gimplify_init_expr): Call it.
        (cp_gimplify_expr): Don't handle VEC_INIT_EXPR.
        (cp_genericize_init, cp_genericize_init_expr)
        (cp_genericize_target_expr): New.
        (cp_fold_r): Call them.
        * tree.c (build_array_copy): Add a TARGET_EXPR.
        * typeck2.c (digest_init_r): Look through a TARGET_EXPR.

2022-01-07  Jason Merrill  <jason@redhat.com>

        PR c++/94041
        * decl.c (initialize_local_var): Fix comment.
        * init.c (build_new_1): Do stabilize array init.
        (build_vec_init): Use TARGET_EXPR for cleanup.  Initialization
        of an element from an explicit initializer is not a
        full-expression.
        * tree.c (expand_vec_init_expr): Pass flags through.
        * typeck2.c (split_nonconstant_init_1): Handle VEC_INIT_EXPR.
        (split_nonconstant_init): Handle array cleanups.
        * cp-tree.h: Adjust.

2022-01-07  Jason Merrill  <jason@redhat.com>

        PR c++/94041
        * decl.c (check_initializer): Remove obsolete comment.
        (wrap_cleanups_r): Don't wrap CLEANUP_EH_ONLY.
        (initialize_local_var): Change assert to test.
        * typeck2.c (maybe_push_temp_cleanup): New.
        (split_nonconstant_init_1): Use it.
        (split_nonconstant_init): Clear cleanup flags.

2022-01-07  Jason Merrill  <jason@redhat.com>

        PR c++/92385
        * typeck2.c (PICFLAG_VEC_INIT): New.
        (process_init_constructor_array): Set it.
        (process_init_constructor): Handle it.
        (split_nonconstant_init_1): Handle VEC_INIT_EXPR.
        * init.c (build_vec_init): Likewise.
        * cp-gimplify.c (cp_gimplify_expr): Factor out...
        * tree.c (expand_vec_init_expr): ...this function.
        (build_vec_init_elt): Handle BRACE_ENCLOSED_INITIALIZER_P.
        (build_vec_init_expr): Likewise.
        * constexpr.c (cxx_eval_vec_init): Likewise.
        (reduced_constant_expression_p): Check arrays before C++20.
        * cp-tree.h (expand_vec_init_expr): Declare.

2022-01-07  Jason Merrill  <jason@redhat.com>

        * init.c (build_new_1): Remove preevaluation code.

2022-01-05  Nathan Sidwell  <nathan@acm.org>

        * pt.c (instantiate_class_template_1): Process attribute((used)) set
        in class's context.

2022-01-05  Nathan Sidwell  <nathan@acm.org>

        * init.c (build_new_1): Check complain before alignment warning.

2022-01-04  Jason Merrill  <jason@redhat.com>

        * cp-tree.h (class releasing_vec): Add begin/end fns.

2022-01-04  Jason Merrill  <jason@redhat.com>

        * init.c: Include -*- C++ -*- on first line.

2022-01-03  Marek Polacek  <polacek@redhat.com>

        PR c++/103758
        * parser.c (cp_parser_decl_specifier_seq): Replace %<decl-specifier%>
        with %qD.

2022-01-03  Marek Polacek  <polacek@redhat.com>

        * parser.c (make_char_string_pack): Add a cast to const unsigned
        char *.

2022-01-03  Jakub Jelinek  <jakub@redhat.com>

        PR c++/103600
        * rtti.c (get_tinfo_decl_direct): Add "non overlapping" attribute
        to DECL_TINFO_P VAR_DECLs.

2022-01-02  Jason Merrill  <jason@redhat.com>

        * init.c (build_vec_init): Append the decrement to elt_init.

2022-01-02  Jason Merrill  <jason@redhat.com>

        * decl.c (wrap_cleanups_r): Don't wrap if noexcept.

\f
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