Daily bump.

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

2023-09-18  Patrick Palka  <ppalka@redhat.com>

        PR c++/89231
        * pt.cc (try_class_unification): Strengthen TI_TEMPLATE equality
        test by not calling most_general_template.  Only unify the
        innermost levels of template arguments.
        (unify) <case CLASS_TYPE>: Only unify the innermost levels of
        template arguments, and only if the template is primary.

2023-09-18  Patrick Palka  <ppalka@redhat.com>

        PR c++/63198
        PR c++/18474
        * semantics.cc (maybe_convert_cond): Look through implicit
        INDIRECT_REF when deciding whether to issue a -Wparentheses
        warning, and consider templated assignment expressions as well.
        (finish_parenthesized_expr): Look through implicit INDIRECT_REF
        when suppressing -Wparentheses warning.
        * typeck.cc (build_x_modify_expr): Check simple assignments
        ahead time too, not just compound assignments.  Give the second
        operand of MODOP_EXPR a non-null type so that it's not considered
        always instantiation-dependent.  Don't call suppress_warning.

2023-09-18  Patrick Palka  <ppalka@redhat.com>

        PR c++/108347
        * pt.cc (unify): Return unify_success for identical dependent
        DECL_P 'arg' and 'parm'.
        <case CONST_DECL>: Remove handling.

2023-09-18  Patrick Palka  <ppalka@redhat.com>

        * call.cc (add_template_candidate_real): Check arity even
        when there are no explicit template arguments.  Combine the
        two adjacent '!obj' tests into one.

2023-09-18  Patrick Palka  <ppalka@redhat.com>

        * pt.cc (register_specialization): Remove now-unnecessary
        early exit for FUNCTION_DECL partial instantiation.
        (tsubst_template_decl): Pass use_spec_table=false to
        tsubst_function_decl.  Set DECL_TI_ARGS of a non-lambda
        FUNCTION_DECL specialization to the full set of arguments.
        Simplify register_specialization call accordingly.

2023-09-18  Jason Merrill  <jason@redhat.com>

        * class.cc (check_subobject_offset): Use similar_type_p.

2023-09-12  Jason Merrill  <jason@redhat.com>

        PR c++/111357
        * pt.cc (expand_integer_pack): Convert argument to int.

2023-09-12  Jason Merrill  <jason@redhat.com>

        PR c++/107198
        * typeck2.cc (process_init_constructor_array): Use VEC_INIT_EXPR
        regardless of seen_error.

2023-09-08  Patrick Palka  <ppalka@redhat.com>

        PR c++/99599
        * pt.cc (check_non_deducible_conversions): Add bool parameter
        passed down to check_non_deducible_conversion.
        (fn_type_unification): Call check_non_deducible_conversions
        an extra time before satisfaction with noninst_only_p=true.
        (conversion_may_instantiate_p): Define.
        (check_non_deducible_conversion): Add bool parameter controlling
        whether to compute only conversions that are guaranteed to
        not induce template instantiation.

2023-09-07  Sandra Loosemore  <sandra@codesourcery.com>

        PR c++/111274
        * parser.cc (fixup_blocks_walker): Check for null BIND_EXPR_BLOCK.

2023-09-06  Jason Merrill  <jason@redhat.com>

        * class.cc (check_subobject_offset): Check
        same_type_ignoring_top_level_qualifiers_p.

2023-09-05  Marek Polacek  <polacek@redhat.com>

        PR c++/91483
        * constexpr.cc (verify_constant_explain_r): New.
        (verify_constant): Call it.

2023-09-05  Jakub Jelinek  <jakub@redhat.com>

        PR c++/52953
        * name-lookup.cc (check_local_shadow): Don't punt early for
        DECL_EXTERNAL decls, instead just disable the shadowing of namespace
        decls check for those and emit a pedwarn rather than error_at or
        permerror for those.  Formatting fix.

2023-09-05  Jakub Jelinek  <jakub@redhat.com>

        PR c++/52953
        * name-lookup.h (struct cp_binding_level): Add artificial bit-field.
        Formatting fixes.
        * name-lookup.cc (check_local_shadow): Skip artificial bindings when
        checking if parameter scope is parent scope.  Don't special case
        FUNCTION_NEEDS_BODY_BLOCK.  Diagnose the in_function_try_handler
        cases in the b->kind == sk_function_parms test and verify no
        non-artificial intervening scopes.  Add missing auto_diagnostic_group.
        * decl.cc (begin_function_body): Set
        current_binding_level->artificial.
        * semantics.cc (begin_function_try_block): Likewise.

2023-09-05  Patrick Palka  <ppalka@redhat.com>

        * parser.cc (cp_parser_parenthesized_expression_list_elt): Pass
        nullptr as non_constant_p to cp_parser_braced_list if our
        non_constant_p is null.
        (cp_parser_initializer_list): Likewise to
        cp_parser_initializer_clause.  Avoid inspecting
        clause_non_constant_p if it's uninitialized.

2023-09-05  Patrick Palka  <ppalka@redhat.com>

        * call.cc (build_user_type_conversion): Free allocated
        conversions.
        (build_converted_constant_expr_internal): Use
        conversion_obstack_sentinel instead.
        (perform_dguide_overload_resolution): Likewise.
        (build_new_function_call): Likewise.
        (build_operator_new_call): Free allocated conversions.
        (build_op_call): Use conversion_obstack_sentinel instead.
        (build_conditional_expr): Use conversion_obstack_sentinel
        instead, and hoist it out to the outermost scope.
        (build_new_op): Use conversion_obstack_sentinel instead
        and set it up before the first goto.  Remove second unneeded goto.
        (build_op_subscript): Use conversion_obstack_sentinel instead.
        (ref_conv_binds_to_temporary): Likewise.
        (build_new_method_call): Likewise.
        (can_convert_arg): Likewise.
        (can_convert_arg_bad): Likewise.
        (perform_implicit_conversion_flags): Likewise.
        (perform_direct_initialization_if_possible): Likewise.
        (initialize_reference): Likewise.

2023-09-01  Jakub Jelinek  <jakub@redhat.com>

        PR c++/111069
        * cp-tree.h (determine_local_discriminator): Add NAME argument with
        NULL_TREE default.
        (struct cp_decomp): New type.
        (cp_finish_decl): Add DECOMP argument defaulted to nullptr.
        (cp_maybe_mangle_decomp): Remove declaration.
        (cp_finish_decomp): Add cp_decomp * argument, remove tree and unsigned
        args.
        (cp_convert_range_for): Likewise.
        * decl.cc (determine_local_discriminator): Add NAME argument, use it
        if non-NULL, otherwise compute it the old way.
        (maybe_commonize_var): Don't return early for structured bindings.
        (cp_finish_decl): Add DECOMP argument, if non-NULL, call
        cp_maybe_mangle_decomp.
        (cp_maybe_mangle_decomp): Make it static with a forward declaration.
        Call determine_local_discriminator.  Replace FIRST and COUNT arguments
        with DECOMP argument.
        (cp_finish_decomp): Replace FIRST and COUNT arguments with DECOMP
        argument.
        * mangle.cc (find_decomp_unqualified_name): Remove.
        (write_unqualified_name): Don't call find_decomp_unqualified_name.
        (mangle_decomp): Handle mangling of static function/block scope
        structured bindings.  Don't call decl_mangling_context twice.  Call
        check_abi_tags, call write_abi_tags for abi version >= 19 and emit
        -Wabi warnings if needed.
        (write_guarded_var_name): Handle structured bindings.
        (mangle_ref_init_variable): Use write_guarded_var_name.
        * parser.cc (cp_parser_range_for): Adjust do_range_for_auto_deduction
        and cp_convert_range_for callers.
        (do_range_for_auto_deduction): Replace DECOMP_FIRST_NAME and
        DECOMP_CNT arguments with DECOMP.  Adjust cp_finish_decomp caller.
        (cp_convert_range_for): Replace DECOMP_FIRST_NAME and
        DECOMP_CNT arguments with DECOMP.  Don't call cp_maybe_mangle_decomp,
        adjust cp_finish_decl and cp_finish_decomp callers.
        (cp_parser_decomposition_declaration): Don't call
        cp_maybe_mangle_decomp, adjust cp_finish_decl and cp_finish_decomp
        callers.
        (cp_convert_omp_range_for): Adjust do_range_for_auto_deduction
        and cp_finish_decomp callers.
        (cp_finish_omp_range_for): Don't call cp_maybe_mangle_decomp,
        adjust cp_finish_decl and cp_finish_decomp callers.
        * pt.cc (tsubst_omp_for_iterator): Adjust tsubst_decomp_names
        caller.
        (tsubst_decomp_names): Replace FIRST and CNT arguments with DECOMP.
        (tsubst_expr): Don't call cp_maybe_mangle_decomp, adjust
        tsubst_decomp_names, cp_finish_decl, cp_finish_decomp and
        cp_convert_range_for callers.

2023-08-30  Marek Polacek  <polacek@redhat.com>

        PR c++/91319
        * parser.cc (cp_parser_initializer_list): Set CONSTRUCTOR_IS_DIRECT_INIT
        when the designated initializer is of the .x{} form.

2023-08-30  Marek Polacek  <polacek@redhat.com>

        PR c++/111173
        * decl.cc (grokdeclarator): Disallow constinit on functions.

2023-08-29  Marek Polacek  <polacek@redhat.com>

        * call.cc (convert_like_internal): Show where the conversion function
        was declared.
        (maybe_show_nonconverting_candidate): New.
        * cp-tree.h (maybe_show_nonconverting_candidate): Declare.
        * typeck.cc (convert_for_assignment): Call it.

2023-08-25  Sandra Loosemore  <sandra@codesourcery.com>

        * cp-tree.h (cp_convert_omp_range_for): Adjust declaration.
        * parser.cc (struct omp_for_parse_data): New.
        (cp_parser_postfix_expression): Diagnose calls to OpenMP runtime
        in intervening code.
        (check_omp_intervening_code): New.
        (cp_parser_statement_seq_opt): Special-case nested loops, blocks,
        and other constructs for OpenMP loops.
        (cp_parser_iteration_statement): Reject loops in intervening code.
        (cp_parser_omp_for_loop_init): Expand comments and tweak the
        interface slightly to better distinguish input/output parameters.
        (cp_convert_omp_range_for): Likewise.
        (cp_parser_omp_loop_nest): New, split from cp_parser_omp_for_loop
        and largely rewritten.  Add more comments.
        (insert_structured_blocks): New.
        (find_structured_blocks): New.
        (struct sit_data, substitute_in_tree_walker, substitute_in_tree):
        New.
        (fixup_blocks_walker): New.
        (cp_parser_omp_for_loop): Rewrite to use recursive descent instead
        of a loop.  Add logic to reshuffle the bits of code collected
        during parsing so intervening code gets moved to the loop body.
        (cp_parser_omp_loop): Remove call to finish_omp_for_block, which
        is now redundant.
        (cp_parser_omp_simd): Likewise.
        (cp_parser_omp_for): Likewise.
        (cp_parser_omp_distribute): Likewise.
        (cp_parser_oacc_loop): Likewise.
        (cp_parser_omp_taskloop): Likewise.
        (cp_parser_pragma): Reject OpenMP pragmas in intervening code.
        * parser.h (struct cp_parser): Add omp_for_parse_state field.
        * pt.cc (tsubst_omp_for_iterator): Adjust call to
        cp_convert_omp_range_for.
        * semantics.cc (finish_omp_for): Try harder to preserve location
        of loop variable init expression for use in diagnostics.
        (struct fofb_data, finish_omp_for_block_walker): New.
        (finish_omp_for_block): Allow variables to be bound in a BIND_EXPR
        nested inside BIND instead of directly in BIND itself.

2023-08-25  Sandra Loosemore  <sandra@codesourcery.com>

        * constexpr.cc (cxx_eval_constant_expression): Handle
        OMP_STRUCTURED_BLOCK.
        * pt.cc (tsubst_expr): Likewise.

2023-08-25  Uros Bizjak  <ubizjak@gmail.com>

        * call.cc (build_conditional_expr):
        Rename TRUE/FALSE to true/false.
        (build_new_op): Ditto.

2023-08-22  Jason Merrill  <jason@redhat.com>

        * pt.cc (outer_template_args): Handle non-template argument.
        * constraint.cc (maybe_substitute_reqs_for): Pass decl to it.
        * cp-tree.h (outer_template_args): Adjust.

2023-08-22  Jason Merrill  <jason@redhat.com>

        PR c++/109751
        * cp-tree.h (member_like_constrained_friend_p): Declare.
        * decl.cc (member_like_constrained_friend_p): New.
        (function_requirements_equivalent_p): Check it.
        (duplicate_decls): Check it.
        (grokfndecl): Check friend template constraints.
        * mangle.cc (decl_mangling_context): Check it.
        (write_unqualified_name): Check it.
        * pt.cc (uses_outer_template_parms_in_constraints): Fix for friends.
        (tsubst_friend_function): Don't check satisfaction.

2023-08-22  Tobias Burnus  <tobias@codesourcery.com>

        * parser.cc (cp_parser_omp_clause_defaultmap): Parse
        'all' as category.

2023-08-15  Chung-Lin Tang  <cltang@codesourcery.com>
            Thomas Schwinge  <thomas@codesourcery.com>

        * parser.cc (OACC_DATA_CLAUSE_MASK): Add PRAGMA_OACC_CLAUSE_DEFAULT.

2023-08-14  gnaggnoyil  <gnaggnoyil@gmail.com>

        DR 2386
        PR c++/110216
        * decl.cc (get_tuple_size): Update implementation for DR 2386.

2023-08-14  Jason Merrill  <jason@redhat.com>

        * parser.cc (cp_parser_simple_type_specifier): Handle -std=c++14
        -fconcepts.

2023-08-12  Patrick Palka  <ppalka@redhat.com>
            Jason Merrill  <jason@redhat.com>

        PR c++/106604
        * decl.cc (redeclaration_error_message): Remove special handling
        for deduction guides.
        (grokfndecl): Give deduction guides a dummy DECL_INITIAL.

2023-08-11  Patrick Palka  <ppalka@redhat.com>

        PR c++/110927
        * parser.cc (cp_parser_type_requirement): Pass
        check_dependency_p=true instead of =false.

2023-08-11  Patrick Palka  <ppalka@redhat.com>

        PR c++/71954
        * decl.cc (grokdeclarator): Pass 'dname' instead of
        'unqualified_id' as the name when building the VAR_DECL for a
        static data member.  Call check_explicit_specialization for a
        TEMPLATE_ID_EXPR such member.
        * pt.cc (finish_member_template_decl): Return NULL_TREE
        instead of 'decl' when DECL_TEMPLATE_SPECIALIZATION is not
        set.

2023-08-11  Patrick Palka  <ppalka@redhat.com>

        * ptree.cc (cxx_print_decl): Check for DECL_LANG_SPECIFIC and
        TS_DECL_COMMON only when necessary.  Print DECL_TEMPLATE_INFO
        for all decls that have it, not just VAR_DECL or FUNCTION_DECL.
        Also print DECL_USE_TEMPLATE.
        (cxx_print_type): Print TYPE_TEMPLATE_INFO.
        <case BOUND_TEMPLATE_TEMPLATE_PARM>: Don't print TYPE_TI_ARGS
        anymore.
        <case TEMPLATE_TYPE/TEMPLATE_PARM>: Print TEMPLATE_TYPE_PARM_INDEX
        instead of printing the index, level and original level
        individually.

2023-08-08  Marek Polacek  <polacek@redhat.com>

        * parser.cc (cp_parser_postfix_expression): Adjust the call to
        cp_parser_braced_list.
        (cp_parser_postfix_open_square_expression): Likewise.
        (cp_parser_new_initializer): Likewise.
        (cp_parser_assignment_expression): Adjust the call to
        cp_parser_initializer_clause.
        (cp_parser_lambda_introducer): Adjust the call to cp_parser_initializer.
        (cp_parser_range_for): Adjust the call to cp_parser_braced_list.
        (cp_parser_jump_statement): Likewise.
        (cp_parser_mem_initializer): Likewise.
        (cp_parser_template_argument): Likewise.
        (cp_parser_default_argument): Adjust the call to cp_parser_initializer.
        (cp_parser_initializer): Handle null is_direct_init and non_constant_p
        arguments.
        (cp_parser_initializer_clause): Handle null non_constant_p argument.
        (cp_parser_braced_list): Likewise.
        (cp_parser_initializer_list): Likewise.
        (cp_parser_member_declaration): Adjust the call to
        cp_parser_initializer_clause and cp_parser_initializer.
        (cp_parser_yield_expression): Adjust the call to cp_parser_braced_list.
        (cp_parser_functional_cast): Likewise.
        (cp_parser_late_parse_one_default_arg): Adjust the call to
        cp_parser_initializer.
        (cp_parser_omp_for_loop_init): Likewise.
        (cp_parser_omp_declare_reduction_exprs): Likewise.

2023-08-08  Nathaniel Shead  <nathanieloshead@gmail.com>

        PR c++/100482
        * parser.cc (cp_parser_decltype_expr): Report errors raised by
        finish_id_expression.

2023-08-04  Tamar Christina  <tamar.christina@arm.com>

        * cp-tree.h (RANGE_FOR_NOVECTOR): New.
        (cp_convert_range_for, finish_while_stmt_cond, finish_do_stmt,
        finish_for_cond): Add novector param.
        * init.cc (build_vec_init): Default novector to false.
        * method.cc (build_comparison_op): Likewise.
        * parser.cc (cp_parser_statement): Likewise.
        (cp_parser_for, cp_parser_c_for, cp_parser_range_for,
        cp_convert_range_for, cp_parser_iteration_statement,
        cp_parser_omp_for_loop, cp_parser_pragma): Support novector.
        (cp_parser_pragma_novector): New.
        * pt.cc (tsubst_expr): Likewise.
        * semantics.cc (finish_while_stmt_cond, finish_do_stmt,
        finish_for_cond): Likewise.

2023-08-01  Lewis Hyatt  <lhyatt@gmail.com>

        * parser.cc (c_init_preprocess): New function.
        (maybe_read_tokens_for_pragma_lex): New function.
        (pragma_lex): Support preprocess-only mode.
        (pragma_lex_discard_to_eol): New function.

2023-07-31  Chung-Lin Tang  <cltang@codesourcery.com>

        * parser.cc (cp_parser_oacc_host_data): Add checking requiring OpenACC
        host_data construct to have an use_device clause.

2023-07-28  Ng YongXiang  <yongxiangng@gmail.com>

        PR c++/110057
        PR ipa/83054
        * init.cc (build_vec_delete_1): Devirtualize array destruction.

2023-07-27  Patrick Palka  <ppalka@redhat.com>

        PR c++/110197
        * constexpr.cc (cxx_eval_array_reference): Allow synthesizing an
        empty subobject even if CONSTRUCTOR_NO_CLEARING is set.
        (cxx_eval_bare_aggregate): Set 'no_slot' to true more generally
        whenever new_ctx.ctor is set to NULL_TREE by init_subob_ctx,
        i.e. whenever initializing an subobject of empty type.
        (cxx_eval_vec_init_1): Define 'no_slot' as above and use it
        accordingly.

2023-07-27  Nathaniel Shead  <nathanieloshead@gmail.com>

        PR c++/103497
        * pt.cc (type_uses_auto): Check inside parameter packs.

2023-07-26  Patrick Palka  <ppalka@redhat.com>

        PR c++/110566
        PR c++/108179
        * pt.cc (reduce_template_parm_level): Set DECL_TEMPLATE_INFO
        on the DECL_TEMPLATE_RESULT of the new ttp.
        (add_defaults_to_ttp): Make a copy of the original ttp's
        DECL_TEMPLATE_RESULT, and update this copy's DECL_TEMPLATE_INFO
        as well.
        (coerce_template_template_parms): Make sure 'scope_args' has
        the right amount of levels for the ttp argument.
        (most_general_template): Handle template template parameters.
        (rewrite_template_parm): Set DECL_TEMPLATE_RESULT on the
        DECL_TEMPLATE_RESULT of the new ttp.

2023-07-26  Patrick Palka  <ppalka@redhat.com>

        PR c++/110566
        PR c++/108179
        * pt.cc (coerce_template_template_parms): Simplify by using
        DECL_INNERMOST_TEMPLATE_PARMS and removing redundant asserts.
        Always pass the parameters of the most general template to
        coerce_template_parms.

2023-07-26  Patrick Palka  <ppalka@redhat.com>

        PR c++/110809
        * pt.cc (unify) <case INTEGER_CST>: Generalize to handle
        REAL_CST as well.

2023-07-26  Marek Polacek  <polacek@redhat.com>

        * parser.cc (cp_parser_constant_expression): Allow non_constant_p to be
        nullptr even when allow_non_constant_p is true.  Don't call
        _rvalue_constant_expression when not necessary.  Move local variable
        declarations closer to their first use.
        (cp_parser_static_assert): Don't pass a dummy down to
        cp_parser_constant_expression.

2023-07-26  Jason Merrill  <jason@redhat.com>

        PR c++/106310
        * parser.cc (cp_parser_template_name): Skip non-member
        lookup after the template keyword.
        (cp_parser_lookup_name): Pass down template_keyword_p.

2023-07-26  Nathaniel Shead  <nathanieloshead@gmail.com>

        PR c++/96630
        PR c++/98675
        PR c++/70331
        * constexpr.cc (constexpr_global_ctx::is_outside_lifetime): New
        function.
        (constexpr_global_ctx::get_value): Don't return expired values.
        (constexpr_global_ctx::get_value_ptr): Likewise.
        (constexpr_global_ctx::remove_value): Mark value outside
        lifetime.
        (outside_lifetime_error): New function.
        (cxx_eval_call_expression): No longer track save_exprs.
        (cxx_eval_loop_expr): Likewise.
        (cxx_eval_constant_expression): Add checks for outside lifetime
        values. Remove local variables at end of bind exprs, and
        temporaries after cleanup points.

2023-07-26  Nathaniel Shead  <nathanieloshead@gmail.com>

        PR c++/110619
        * cp-gimplify.cc (cp_genericize_r): Transform RETURN_EXPRs to
        not return dangling pointers.
        * cp-tree.h (RETURN_EXPR_LOCAL_ADDR_P): New flag.
        (check_return_expr): Add a new parameter.
        * semantics.cc (finish_return_stmt): Set flag on RETURN_EXPR
        when referring to dangling pointer.
        * typeck.cc (check_return_expr): Disable transformation of
        dangling pointers, instead pass this information to caller.

2023-07-26  Nathaniel Shead  <nathanieloshead@gmail.com>

        * constexpr.cc (modifying_const_object_error): Find the source
        location of the const object's declaration.
        (cxx_eval_constant_expression): Update input_location to the
        location of the currently evaluated expression, if possible.

2023-07-25  Marek Polacek  <polacek@redhat.com>

        PR c++/108960
        * pt.cc (lookup_and_finish_template_variable): Don't clear tf_partial
        here.
        (instantiate_template): Reset all complain flags except
        tf_warning_or_error.

2023-07-25  Marek Polacek  <polacek@redhat.com>

        PR c++/110382
        * constexpr.cc (cxx_eval_array_reference): Create a new constructor
        only when we don't already have a matching one.  Clear the object
        when the type is non-scalar.

2023-07-21  Marek Polacek  <polacek@redhat.com>

        PR c++/110106
        * constexpr.cc (potential_constant_expression_1): Try to complete the
        type when !processing_template_decl.

2023-07-20  Marek Polacek  <polacek@redhat.com>

        PR c++/110114
        * call.cc (implicit_conversion_1): Return early if the type isn't
        complete.

2023-07-19  Marek Polacek  <polacek@redhat.com>

        PR c++/110745
        * error.cc (dump_simple_decl): Print base class name.

2023-07-19  Marek Polacek  <polacek@redhat.com>

        PR c++/110064
        * typeck2.cc (process_init_constructor_record): Don't emit
        -Wmissing-field-initializers for empty classes.

2023-07-19  Patrick Palka  <ppalka@redhat.com>

        * pt.cc (type_unification_real): Test for PARM_DECL instead
        of TEMPLATE_PARM_INDEX to distinguish a type vs non-type
        template parameter pack.
        (type_targs_deducible_from): Likewise.

2023-07-19  Patrick Palka  <ppalka@redhat.com>

        * pt.cc (tsubst_function_decl): Add defaulted 'use_spec_table'
        flag parameter.  Don't look up or insert into the specializations
        table if 'use_spec_table' is false.
        (tsubst_decl): Add defaulted 'use_spec_table' flag parameter.
        Check for error_mark_node.
        <case FUNCTION_DECL>: Pass 'use_spec_table' to
        tsubst_function_decl.
        <case TYPE/VAR_DECL>: Don't call coerce_template_parms.
        Don't look up or insert into the specializations table if
        'use_spec_table' is false.  Exit earlier if the substituted
        type is erroneous and we're not complaining, and do so for
        alias specializations as well.
        (instantiate_template): Pass false as 'use_spec_table'
        to tsubst_decl.  Call register_specialization afterwards.

2023-07-18  Jason Merrill  <jason@redhat.com>

        * constexpr.cc (cxx_eval_bit_cast): Check that the result of
        native_interpret_aggregate doesn't need more evaluation.

2023-07-18  Patrick Palka  <ppalka@redhat.com>

        * call.cc (add_template_conv_candidate): Don't check for
        non-empty 'candidates' here.
        (build_op_call): Check it here, before we've considered any
        conversion functions.

2023-07-18  Patrick Palka  <ppalka@redhat.com>

        PR c++/110535
        * call.cc (add_conv_candidate): Check constraints.

2023-07-17  Jason Merrill  <jason@redhat.com>

        * constexpr.cc (cxx_eval_call_expression): Only cache
        reduced_constant_expression_p results.
        (reduced_constant_expression_p): Handle CONSTRUCTOR of scalar type.
        (cxx_eval_constant_expression): Fold vectors here.
        (cxx_eval_bare_aggregate): Not here.

2023-07-15  Patrick Palka  <ppalka@redhat.com>

        PR c++/110441
        * call.cc (keep_unused_object_arg): Use cp_build_compound_expr
        instead of building a COMPOUND_EXPR directly.

2023-07-15  Patrick Palka  <ppalka@redhat.com>

        PR c++/110524
        * mangle.cc (write_expression): Handle TEMPLATE_ID_EXPR
        whose template is already an IDENTIFIER_NODE.

2023-07-14  Nathaniel Shead  <nathanieloshead@gmail.com>

        * constexpr.cc (cxx_eval_constant_expression): Pass t to get_value.

2023-07-14  Jason Merrill  <jason@redhat.com>

        PR c++/110344
        * constexpr.cc (cxx_eval_constant_expression): Move P2738 handling
        after heap handling.
        * name-lookup.cc (get_cxx_dialect_name): Add C++26.

2023-07-14  Marek Polacek  <polacek@redhat.com>
            Jason Merrill  <jason@redhat.com>

        PR c++/109876
        * decl.cc (cp_finish_decl): Set TREE_CONSTANT when initializing
        an object of empty class type.
        * pt.cc (value_dependent_expression_p) <case VAR_DECL>: Treat a
        constexpr-declared non-constant variable as value-dependent.

2023-07-11  Patrick Palka  <ppalka@redhat.com>

        PR c++/110580
        * pt.cc (lookup_template_variable): Pass all levels of arguments
        to coerce_template_parms, and use the parameters from the most
        general template.

2023-07-10  Patrick Palka  <ppalka@redhat.com>

        PR c++/110523
        * pt.cc (redeclare_class_template): Relax the ttp DECL_CONTEXT
        assert, and downgrade it to a checking assert.

2023-06-30  Patrick Palka  <ppalka@redhat.com>

        * cp-tree.h (TEMPLATE_PARM_DESCENDANTS): Harden.
        (TEMPLATE_TYPE_DESCENDANTS): Define.
        (TEMPLATE_TEMPLATE_PARM_SIMPLE_P): Define.
        * pt.cc (reduce_template_parm_level): Revert
        r14-418-g0bc2a1dc327af9 change.
        (process_template_parm): Set TEMPLATE_TEMPLATE_PARM_SIMPLE_P
        appropriately.
        (uses_outer_template_parms): Determine the outer depth of
        a template template parm without relying on DECL_CONTEXT.
        (tsubst) <case TEMPLATE_TEMPLATE_PARM>: Cache lowering a
        simple template template parm.  Consistently use 'code'.

2023-06-29  Patrick Palka  <ppalka@redhat.com>

        PR c++/110468
        * init.cc (maybe_instantiate_nsdmi_init): Mask out all
        tsubst flags except for tf_warning_or_error.

2023-06-29  Patrick Palka  <ppalka@redhat.com>

        PR c++/110463
        * cp-gimplify.cc (cp_fold) <case CONSTRUCTOR>: Propagate
        CONSTRUCTOR_MUTABLE_POISON.

2023-06-29  Patrick Palka  <ppalka@redhat.com>

        * cp-tree.h (tree_template_info::partial): New data member.
        (TI_PARTIAL_INFO): New tree accessor.
        (most_specialized_partial_spec): Add defaulted bool parameter.
        * module.cc (trees_out::core_vals) <case TEMPLATE_INFO>: Stream
        TI_PARTIAL_INFO.
        (trees_in::core_vals) <case TEMPLATE_INFO>: Likewise.
        * parser.cc (specialization_of): Adjust after making
        most_specialized_partial_spec return TEMPLATE_INFO instead
        of TREE_LIST.
        * pt.cc (process_partial_specialization): Set TI_PARTIAL_INFO
        of 'decl' to point back to the partial TEMPLATE_DECL.  Likewise
        (and pass rechecking=true to most_specialization_partial_spec).
        (instantiate_class_template): Likewise.
        (instantiate_template): Set TI_PARTIAL_INFO to the result of
        most_specialization_partial_spec after forming a variable
        template specialization.
        (most_specialized_partial_spec): Add 'rechecking' parameter.
        Exit early if the template is not primary.  Use the TI_PARTIAL_INFO
        of the corresponding TEMPLATE_INFO as a cache unless 'rechecking'
        is true.  Don't bother setting TREE_TYPE of each TREE_LIST.
        (instantiate_decl): Adjust after making
        most_specialized_partial_spec return TEMPLATE_INFO instead of
        TREE_LIST.
        * ptree.cc (cxx_print_xnode) <case TEMPLATE_INFO>: Dump
        TI_PARTIAL_INFO.

2023-06-29  Eugene Rozenfeld  <erozen@microsoft.com>

        * Make-lang.in: Pass correct stage cc1plus when processing
        profile data collected while building target libraries

2023-06-28  Patrick Palka  <ppalka@redhat.com>

        PR c++/89442
        PR c++/107437
        * cp-tree.h (lookup_template_variable): Add complain parameter.
        * parser.cc (cp_parser_template_id): Pass tf_warning_or_error
        to lookup_template_variable.
        * pt.cc (lookup_template_variable): Add complain parameter.
        Coerce template arguments here ...
        (finish_template_variable): ... instead of here.
        (lookup_and_finish_template_variable): Check for error_mark_node
        result from lookup_template_variable.
        (tsubst_copy) <case TEMPLATE_ID_EXPR>: Pass complain to
        lookup_template_variable.
        (instantiate_template): Use build2 instead of
        lookup_template_variable to build a TEMPLATE_ID_EXPR
        for most_specialized_partial_spec.

2023-06-28  Marek Polacek  <polacek@redhat.com>

        PR c++/110175
        * typeck.cc (cp_build_unary_op): Check tf_warning before warning.

2023-06-28  Jason Merrill  <jason@redhat.com>

        PR c++/110334
        * cp-tree.h (clone_attrs): Declare.
        * method.cc (implicitly_declare_fn): Use it for inherited
        constructor.
        * optimize.cc (clone_attrs): New.
        (maybe_clone_body): Use it.

2023-06-28  Jason Merrill  <jason@redhat.com>

        PR c++/110344
        * constexpr.cc (cxx_eval_constant_expression): In C++26, allow cast
        from void* to the type of a pointed-to object.

2023-06-23  David Malcolm  <dmalcolm@redhat.com>

        PR c++/110164
        * cp-name-hint.h (maybe_suggest_missing_header): New decl.
        * decl.cc: Define INCLUDE_MEMORY.  Add include of
        "cp/cp-name-hint.h".
        (start_decl_1): Call maybe_suggest_missing_header.
        * name-lookup.cc (maybe_suggest_missing_header): Remove "static".

2023-06-16  Alex Coplan  <alex.coplan@arm.com>

        * parser.cc (cp_parser_enum_specifier): Don't reject
        elaborated-type-specifier with enum-base, instead emit new
        Welaborated-enum-base warning.

2023-06-14  Jason Merrill  <jason@redhat.com>

        DR 2327
        PR c++/86521
        * call.cc (joust_maybe_elide_copy): Don't change cand.
        (joust): Move the elided tiebreaker later.

2023-06-13  David Malcolm  <dmalcolm@redhat.com>

        PR c/84890
        * name-lookup.cc (missing_std_header::~missing_std_header): Reword
        note to avoid negative tone of "forgetting".

2023-06-13  Jason Merrill  <jason@redhat.com>

        * tree.cc (build_target_expr): Check TYPE_HAS_MUTABLE_P.

2023-06-12  Tobias Burnus  <tobias@codesourcery.com>

        * parser.cc (cp_parser_omp_clause_map): Reword error message for
        clearness especially with 'omp target (enter/exit) data.'
        * semantics.cc (handle_omp_array_sections): Handle
        GOMP_MAP_{ALWAYS_,}PRESENT_{TO,TOFROM,FROM,ALLOC} enum values.

2023-06-12  Jason Merrill  <jason@redhat.com>

        PR c++/105838
        * call.cc (convert_like_internal) [ck_list]: Use
        maybe_init_list_as_array.
        * constexpr.cc (cxx_eval_vec_init_1): Init might have
        a different type.
        * tree.cc (build_vec_init_elt): Likewise.
        * init.cc (build_vec_init): Handle from_array from a
        TARGET_EXPR.  Retain TARGET_EXPR of a different type.

2023-06-11  Patrick Palka  <ppalka@redhat.com>

        PR c++/110122
        * constexpr.cc (cxx_eval_call_expression): Synthesize defaulted
        functions needed for constant evaluation.
        (instantiate_cx_fn_r): Likewise.

2023-06-11  Patrick Palka  <ppalka@redhat.com>

        PR c++/110122
        * pt.cc (lookup_template_class): Extend shortcut for looking up the
        current class scope to consider outer class scopes too, and use
        current_nonlambda_class_type instead of current_class_type.  Only
        call coerce_template_parms when specializing a primary template.

2023-06-10  Nathan Sidwell  <nathan@acm.org>

        PR c++/61663
        * pt.cc (maybe_adjust_types_for_deduction): Implement DR976.

2023-06-09  Jason Merrill  <jason@redhat.com>

        PR c++/110185
        PR c++/58487
        * method.cc (build_comparison_op): Give retval a name.
        * typeck.cc (check_return_expr): Fix for nameless variables.

2023-06-09  Jason Merrill  <jason@redhat.com>

        * parser.cc (cp_parser_simple_type_specifier): Check for auto
        in template argument.
        (cp_parser_template_type_arg): Remove auto checking.

2023-06-09  Jason Merrill  <jason@redhat.com>

        PR c++/110102
        * call.cc (maybe_init_list_as_array): Check that the element type is
        copyable.

2023-06-07  Jason Merrill  <jason@redhat.com>

        PR c++/58487
        PR c++/53637
        * cp-tree.h (INIT_EXPR_NRV_P): New.
        * semantics.cc (finalize_nrv_r): Check it.
        * name-lookup.h (decl_in_scope_p): Declare.
        * name-lookup.cc (decl_in_scope_p): New.
        * typeck.cc (check_return_expr): Allow non-NRV
        returns if the NRV is no longer in scope.

2023-06-07  Jason Merrill  <jason@redhat.com>

        PR c++/58487
        * typeck.cc (want_nrvo_p): New.
        (check_return_expr): Handle -Wnrvo.

2023-06-07  Jason Merrill  <jason@redhat.com>

        PR c++/51571
        PR c++/92407
        * decl.cc (finish_function): Simplify NRV handling.
        * except.cc (maybe_set_retval_sentinel): Also set if NRV.
        (maybe_splice_retval_cleanup): Don't add the cleanup region
        if we don't need it.
        * semantics.cc (nrv_data): Add simple field.
        (finalize_nrv): Set it.
        (finalize_nrv_r): Check it and retval sentinel.
        * cp-tree.h (finalize_nrv): Adjust declaration.
        * typeck.cc (check_return_expr): Remove named_labels check.

2023-06-07  Jason Merrill  <jason@redhat.com>

        PR c++/92407
        * typeck.cc (check_return_expr): Prevent NRV in the presence of
        named labels.

2023-06-07  Jason Merrill  <jason@redhat.com>

        PR c++/33799
        * except.cc (maybe_splice_retval_cleanup): Change
        recognition of function body and try scopes.
        * semantics.cc (do_poplevel): Call it after poplevel.
        (at_try_scope): New.
        * cp-tree.h (maybe_splice_retval_cleanup): Adjust.

2023-06-07  Jason Merrill  <jason@redhat.com>

        * semantics.cc (finalize_nrv_r): [RETURN_EXPR]: Only replace the
        INIT_EXPR.

2023-06-06  Kwok Cheung Yeung  <kcy@codesourcery.com>
            Tobias Burnus  <tobias@codesourcery.com>

        * parser.cc (cp_parser_omp_clause_defaultmap,
        cp_parser_omp_clause_map): Parse 'present'.
        (cp_parser_omp_clause_from_to): New; parse to/from
        clauses with optional 'present' modifier.
        (cp_parser_omp_all_clauses): Update call.
        (cp_parser_omp_target_data, cp_parser_omp_target_enter_data,
        cp_parser_omp_target_exit_data): Handle new enum value for
        'present' mapping.
        * semantics.cc (finish_omp_target): Likewise.

2023-06-04  Jason Merrill  <jason@redhat.com>

        PR c++/97720
        * cp-tree.h (enum cp_tree_index): Add CPTI_CALL_TERMINATE_FN.
        (call_terminate_fn): New macro.
        * cp-gimplify.cc (gimplify_must_not_throw_expr): Use it.
        * except.cc (init_exception_processing): Set it.
        (cp_protect_cleanup_actions): Return it.

2023-06-03  Patrick Palka  <ppalka@redhat.com>

        PR c++/109923
        * pt.cc (is_specialization_of_friend): Fix overbroad check for
        a non-template member function of a class template.

2023-06-03  Patrick Palka  <ppalka@redhat.com>

        * pt.cc (iterative_hash_template_arg): Don't hash
        TEMPLATE_TEMPLATE_PARM specially.

2023-06-03  Patrick Palka  <ppalka@redhat.com>

        * class.cc (build_base_path): Check in_template_context instead
        of in_template_function.
        (resolves_to_fixed_type_p): Likewise.
        * cp-tree.h (in_template_context): Define.
        (in_template_function): Remove.
        * decl.cc (cp_make_fname_decl): Check current_function_decl
        and in_template_context instead of in_template_function.
        * decl2.cc (mark_used): Check in_template_context instead of
        in_template_function.
        * pt.cc (in_template_function): Remove.
        * semantics.cc (enforce_access): Check in_template_context
        instead of current_template_parms directly.

2023-06-03  Patrick Palka  <ppalka@redhat.com>

        PR c++/70790
        * mangle.cc (write_expression): Handle NOEXCEPT_EXPR.

2023-06-02  Jason Merrill  <jason@redhat.com>

        DR 2735
        PR c++/109247
        * call.cc (sfk_copy_or_move): New.
        (joust): Add tiebreaker for explicit conv and copy ctor.

2023-06-02  Jason Merrill  <jason@redhat.com>

        PR c++/110070
        PR c++/105838
        * call.cc (maybe_init_list_as_array): Set DECL_MERGEABLE.
        (convert_like_internal) [ck_list]: Set it.
        (set_up_extended_ref_temp): Copy it.
        * tree.cc (handle_no_unique_addr_attribute): Set it.

2023-06-01  Jason Merrill  <jason@redhat.com>

        * typeck2.cc (check_narrowing): Check flag_permissive.

2023-05-30  Tobias Burnus  <tobias@codesourcery.com>

        PR c/109999
        * parser.cc (cp_parser_oacc_all_clauses,
        cp_parser_omp_all_clauses): Improve error wording.

2023-05-19  Andrew Pinski  <apinski@marvell.com>

        PR driver/33980
        * lang-specs.h ("@c++-header"): Add %w after
        the --output-pch.
        ("@c++-system-header"): Likewise.
        ("@c++-user-header"): Likewise.

2023-05-19  Patrick Palka  <ppalka@redhat.com>

        * constraint.cc (normalize_concept_check): Avoid having to do
        two norm_cache lookups.  Remove unnecessary early exit for an
        ill-formed concept definition.

2023-05-19  Patrick Palka  <ppalka@redhat.com>

        PR c++/97340
        * pt.cc (lookup_and_finish_template_variable): Don't call
        convert_from_reference.
        (tsubst_copy_and_build) <case TEMPLATE_ID_EXPR>: Call
        convert_from_reference on the result of
        lookup_and_finish_template_variable.

2023-05-18  Bernhard Reutner-Fischer  <aldot@gcc.gnu.org>

        * call.cc (promoted_arithmetic_type_p): Use _P defines from tree.h.
        (build_conditional_expr): Ditto.
        (convert_like_internal): Ditto.
        (convert_arg_to_ellipsis): Ditto.
        (build_over_call): Ditto.
        (compare_ics): Ditto.
        * class.cc (is_empty_base_ref): Ditto.
        * coroutines.cc (rewrite_param_uses): Ditto.
        * cp-tree.h (DECL_DISCRIMINATOR_P): Ditto.
        (ARITHMETIC_TYPE_P): Ditto.
        * cvt.cc (ocp_convert): Ditto.
        * cxx-pretty-print.cc (pp_cxx_template_argument_list): Ditto.
        * decl.cc (layout_var_decl): Ditto.
        (get_tuple_size): Ditto.
        * error.cc (dump_simple_decl): Ditto.
        * lambda.cc (start_lambda_scope): Ditto.
        * mangle.cc (write_template_arg): Ditto.
        * method.cc (spaceship_comp_cat): Ditto.
        * module.cc (node_template_info): Ditto.
        (trees_out::start): Ditto.
        (trees_out::decl_node): Ditto.
        (trees_in::read_var_def): Ditto.
        (set_instantiating_module): Ditto.
        * name-lookup.cc (maybe_record_mergeable_decl): Ditto.
        (consider_decl): Ditto.
        (maybe_add_fuzzy_decl): Ditto.
        * pt.cc (convert_nontype_argument): Ditto.
        * semantics.cc (handle_omp_array_sections_1): Ditto.
        (finish_omp_clauses): Ditto.
        (finish_omp_target_clauses_r): Ditto.
        (is_this_parameter): Ditto.
        * tree.cc (build_cplus_array_type): Ditto.
        (is_this_expression): Ditto.
        * typeck.cc (do_warn_enum_conversions): Ditto.
        * typeck2.cc (store_init_value): Ditto.
        (check_narrowing): Ditto.

2023-05-17  Jakub Jelinek  <jakub@redhat.com>

        PR c++/109868
        * init.cc (build_zero_init_1): Don't initialize zero-width bitfields.
        For unions only initialize the first FIELD_DECL.

2023-05-16  Marek Polacek  <polacek@redhat.com>

        PR c++/109774
        * typeck.cc (check_return_expr): In a template, return only after
        suppressing -Wdangling-reference.

2023-05-16  Patrick Palka  <ppalka@redhat.com>

        PR c++/109871
        * call.cc (add_list_candidates): Check for invalid designated
        initialization sooner and even for types that have a list
        constructor.

2023-05-11  Patrick Palka  <ppalka@redhat.com>

        PR c++/109745
        * typeck2.cc (poison_mutable_constructors): Define.
        (store_init_value): Use it instead of setting
        CONSTRUCTOR_MUTABLE_POISON directly.

2023-05-11  Patrick Palka  <ppalka@redhat.com>
            Jonathan Wakely  <jwakely@redhat.com>

        PR c++/83258
        PR c++/80488
        PR c++/97700
        * pt.cc (convert_nontype_argument_function): Remove linkage
        requirement for C++17 and later.
        (invalid_tparm_referent_p) <case ADDR_EXPR>: Restrict
        DECL_ARTIFICIAL rejection test to VAR_DECL.

2023-05-10  Marek Polacek  <polacek@redhat.com>

        PR c++/109680
        * method.cc (build_trait_object): New.
        (assignable_expr): Use it.
        (ref_xes_from_temporary): Likewise.
        (is_convertible_helper): Likewise.  Check FUNC_OR_METHOD_TYPE_P.

2023-05-10  Jason Merrill  <jason@redhat.com>

        * call.cc (convert_like_internal): Share ck_ref_bind handling
        between all bad conversions.

2023-05-10  Jason Merrill  <jason@redhat.com>

        DR 2543
        * constexpr.cc (cxx_eval_outermost_constant_expr): Preserve
        TARGET_EXPR flags.
        (potential_constant_expression_1): Check TARGET_EXPR_ELIDING_P.
        * typeck2.cc (store_init_value): Diagnose constinit sooner.

2023-05-10  Jason Merrill  <jason@redhat.com>

        * constexpr.cc (cxx_eval_outermost_constant_expr): Always check
        for address of immediate fn.
        (maybe_constant_init_1): Evaluate PTRMEM_CST.

2023-05-10  Jakub Jelinek  <jakub@redhat.com>

        PR c++/109756
        * parser.cc (cp_parser_std_attribute): For unknown attributes with
        arguments set TREE_VALUE (attribute) to error_mark_node after skipping
        the balanced tokens.
        (cp_parser_std_attribute_list): If ... is used after attribute without
        arguments, diagnose it and return error_mark_node.  If
        TREE_VALUE (attribute) is error_mark_node, don't call
        make_pack_expansion nor return early error_mark_node.

2023-05-09  Patrick Palka  <ppalka@redhat.com>

        PR c++/109752
        * constraint.cc (satisfaction_cache::satisfaction_cache): In the
        unexpected case of evaluating an atom for the first time noisily,
        remove the cache slot that we inserted.

2023-05-09  Patrick Palka  <ppalka@redhat.com>

        PR c++/109761
        * parser.cc (cp_parser_class_specifier): Don't pass a class
        context to noexcept_override_late_checks.
        (noexcept_override_late_checks): Remove 'type' parameter
        and use DECL_CONTEXT of 'fndecl' instead.

2023-05-09  Jakub Jelinek  <jakub@redhat.com>

        PR c++/109756
        * cp-gimplify.cc (process_stmt_assume_attribute): Diagnose pack
        expansion of assume attribute.

2023-05-08  Patrick Palka  <ppalka@redhat.com>

        PR c++/106214
        PR c++/93107
        * pt.cc (do_auto_deduction): Move up resolve_nondeduced_context
        calls to happen before do_class_deduction.  Add some
        error_mark_node tests.

2023-05-07  Patrick Palka  <ppalka@redhat.com>

        PR c++/85979
        * cxx-pretty-print.cc (cxx_pretty_printer::unary_expression)
        <case ALIGNOF_EXPR>: Consider ALIGNOF_EXPR_STD_P.
        * error.cc (dump_expr) <case ALIGNOF_EXPR>: Likewise.

2023-05-07  Patrick Palka  <ppalka@redhat.com>

        DR 2256
        PR c++/103091
        * decl.cc (decl_jump_unsafe): Return bool instead of int.
        Don't consider TYPE_HAS_NONTRIVIAL_DESTRUCTOR.
        (check_previous_goto_1): Simplify now that decl_jump_unsafe
        returns bool instead of int.
        (check_goto): Likewise.

2023-05-07  Patrick Palka  <ppalka@redhat.com>

        * pt.cc (instantiate_alias_template): Exit early upon
        error from coerce_template_parms.  Remove dependence test
        guarding constraints_satisfied_p.

2023-05-07  Patrick Palka  <ppalka@redhat.com>

        * cp-tree.h (PLACEHOLDER_TYPE_CONSTRAINTS_INFO): Harden via
        TEMPLATE_TYPE_PARM_CHECK.
        (TPARMS_PRIMARY_TEMPLATE): Harden via TREE_VEC_CHECK.
        (TEMPLATE_TEMPLATE_PARM_TEMPLATE_DECL): Harden via
        TEMPLATE_TEMPLATE_PARM_CHECK.
        * cxx-pretty-print.cc (cxx_pretty_printer::simple_type_specifier):
        Guard PLACEHOLDER_TYPE_CONSTRAINTS access.
        * error.cc (dump_type) <case TEMPLATE_TYPE_PARM>: Use separate
        variable to store CLASS_PLACEHOLDER_TEMPLATE result.
        * pt.cc (outer_template_args): Use strip_innermost_template_args.
        (any_type_dependent_arguments_p): Exit early if
        !processing_template_decl.  Use range-based for.
        (any_dependent_template_arguments_p): Likewise.

2023-05-07  Patrick Palka  <ppalka@redhat.com>

        PR c++/98283
        * pt.cc (tsubst_copy_and_build) <case COMPONENT_REF>: Propagate
        REF_PARENTHESIZED_P more generally via force_paren_expr.
        * semantics.cc (force_paren_expr): Document default argument.

2023-05-07  Patrick Palka  <ppalka@redhat.com>

        PR c++/109651
        * pt.cc (coerce_template_args_for_ttp): Mention we can hit the
        current_template_parms fallback when level-lowering a bound ttp.
        (tsubst_template_decl): Add lambda_tparms parameter.  Prefer to
        use lambda_tparms instead of substituting DECL_TEMPLATE_PARMS.
        (tsubst_decl) <case TEMPLATE_DECL>: Pass NULL_TREE as lambda_tparms
        to tsubst_template_decl.
        (tsubst_lambda_expr): For a generic lambda, substitute
        DECL_TEMPLATE_PARMS and set current_template_parms to it
        before substituting the function type.  Pass the substituted
        DECL_TEMPLATE_PARMS as lambda_tparms to tsubst_template_decl.

2023-05-07  Patrick Palka  <ppalka@redhat.com>

        PR c++/109480
        * semantics.cc (enforce_access): Check current_template_parms
        instead of processing_template_decl when deciding whether to
        defer the access check.

2023-05-07  Patrick Palka  <ppalka@redhat.com>

        PR c++/109480
        * constexpr.cc (potential_constant_expression_1) <case CALL_EXPR>:
        Reorganize to call get_fns sooner.  Remove special handling of
        the object argument of a non-static member function call.  Remove
        dead store to 'fun'.

2023-05-05  Jason Merrill  <jason@redhat.com>

        Revert:
        2023-04-27  Jason Merrill  <jason@redhat.com>

        PR c++/61445
        * pt.cc (instantiate_decl): Assert !defer_ok for local
        class members.

2023-05-03  Jason Merrill  <jason@redhat.com>

        PR c++/91618
        PR c++/109649
        * friend.cc (do_friend): Don't call check_explicit_specialization if
        DECL_TEMPLATE_INFO is already set.
        * decl2.cc (check_classfn): Set DECL_TEMPLATE_INFO.
        * name-lookup.cc (set_decl_namespace): Likewise.

2023-05-03  Jakub Jelinek  <jakub@redhat.com>

        * cp-gimplify.cc (cp_fold_data): Move definition earlier.
        (cp_gimplify_expr): Pass address of ff_genericize | ff_mce_false
        constructed data rather than &pset to cp_walk_tree with cp_fold_r.

2023-05-03  Jason Merrill  <jason@redhat.com>

        * pt.cc (reduce_template_parm_level): Fix comparison of
        template template parm to cached version.

2023-05-02  Jason Merrill  <jason@redhat.com>

        * pt.cc (instantiate_class_template): Skip the RECORD_TYPE
        of a class template.
        (tsubst_template_decl): Clear CLASSTYPE_USE_TEMPLATE.

2023-05-02  Jason Merrill  <jason@redhat.com>

        * name-lookup.cc (pop_from_top_level): Don't
        invalidate_class_lookup_cache.

2023-05-02  Jason Merrill  <jason@redhat.com>

        PR c++/109678
        * cp-tree.h (lookup_base): Add offset parm.
        * constexpr.cc (cxx_fold_indirect_ref_1): Pass it.
        * search.cc (struct lookup_base_data_s): Add offset.
        (dfs_lookup_base): Handle it.
        (lookup_base): Pass it.

2023-05-02  Jason Merrill  <jason@redhat.com>

        PR c++/109678
        * constexpr.cc (cxx_fold_indirect_ref_1): Handle empty base first.

2023-05-01  Jason Merrill  <jason@redhat.com>

        PR c++/109666
        * name-lookup.cc (maybe_push_to_top_level)
        (maybe_pop_from_top_level): Split out...
        * pt.cc (instantiate_body): ...from here.
        * init.cc (maybe_instantiate_nsdmi_init): Use them.
        * name-lookup.h: Declare them..

2023-04-28  Eugene Rozenfeld  <erozen@microsoft.com>

        * Make-lang.in: Merge perf data collected when compiling cc1plus and runtime libraries

2023-04-27  Jason Merrill  <jason@redhat.com>

        * call.cc (print_conversion_rejection): Use iloc_sentinel.

2023-04-27  Jason Merrill  <jason@redhat.com>

        PR c++/61445
        * pt.cc (instantiate_decl): Assert !defer_ok for local
        class members.

2023-04-26  Jason Merrill  <jason@redhat.com>

        * init.cc (nsdmi_inst): Remove.
        (maybe_instantiate_nsdmi_init): Use DECL_INITIAL instead.

2023-04-26  Jason Merrill  <jason@redhat.com>

        PR c++/109241
        * pt.cc (instantiate_class_template): Do partially instantiate.
        (tsubst_expr): Do call complete_type for partial instantiations.

2023-04-26  Jason Merrill  <jason@redhat.com>

        PR c++/69836
        * pt.cc (regenerate_decl_from_template): Skip unique friends.

2023-04-26  Patrick Palka  <ppalka@redhat.com>

        * pt.cc (most_specialized_partial_spec): Exit early when
        DECL_TEMPLATE_SPECIALIZATIONS is empty.  Move local variable
        declarations closer to their first use.  Remove redundant
        flag_concepts test.  Remove redundant forward declaration.

2023-04-25  Patrick Palka  <ppalka@redhat.com>

        PR c++/108975
        * pt.cc (value_dependent_expression_p) <case VAR_DECL>:
        Suppress conservative early exit for reference variables
        when DECL_HAS_VALUE_EXPR_P.

2023-04-25  Tobias Burnus  <tobias@codesourcery.com>

        * parser.cc (cp_parser_omp_scan_loop_body): Handle
        zero exec statements before/after 'omp scan'.

2023-04-24  Patrick Palka  <ppalka@redhat.com>

        * cp-tree.h (cp_expr_location): Define here.
        * tree.cc (cp_expr_location): Don't define here.

2023-04-21  Jason Merrill  <jason@redhat.com>

        PR c++/108099
        * decl.cc (grokdeclarator): Don't clear typedef_decl after 'unsigned
        typedef' pedwarn.  Use c_common_signed_or_unsigned_type.  Also
        handle 'signed typedef'.

2023-04-21  Patrick Palka  <ppalka@redhat.com>

        * tree.cc (cp_walk_subtrees): Avoid repeatedly dereferencing tp.
        <case DECLTYPE_TYPE>: Use cp_unevaluated and WALK_SUBTREE.
        <case ALIGNOF_EXPR etc>: Likewise.

2023-04-20  Patrick Palka  <ppalka@redhat.com>

        * pt.cc (tsubst) <case TEMPLATE_TYPE_PARM>: Don't recurse when
        level lowering a cv-qualified type template parameter.  Remove
        recursive loop breaker in the level lowering case for constrained
        autos.  Use the TEMPLATE_PARM_DESCENDANTS cache in this case as
        well.

2023-04-20  Patrick Palka  <ppalka@redhat.com>

        * constraint.cc (diagnose_trait_expr): Convert a TREE_VEC
        of arguments into a TREE_LIST for sake of pretty printing.
        * cxx-pretty-print.cc (pp_cxx_trait): Handle TREE_VEC
        instead of TREE_LIST of trailing variadic trait arguments.
        * method.cc (constructible_expr): Likewise.
        (is_xible_helper): Likewise.
        * parser.cc (cp_parser_trait): Represent trailing variadic trait
        arguments as a TREE_VEC instead of TREE_LIST.
        * pt.cc (value_dependent_expression_p): Handle TREE_VEC
        instead of TREE_LIST of trailing variadic trait arguments.
        * semantics.cc (finish_type_pack_element): Likewise.
        (check_trait_type): Likewise.

2023-04-20  Patrick Palka  <ppalka@redhat.com>

        * tree.cc (strip_typedefs): Move TREE_LIST handling to
        strip_typedefs_expr.  Dispatch to strip_typedefs_expr for
        non-type 't'.
        <case TYPENAME_TYPE>: Remove manual dispatching to
        strip_typedefs_expr.
        <case TRAIT_TYPE>: Likewise.
        (strip_typedefs_expr): Replaces calls to strip_typedefs_expr
        with strip_typedefs throughout.  Don't dispatch to strip_typedefs
        for type 't'.
        <case TREE_LIST>: Replace this with the better version from
        strip_typedefs.

2023-04-19  Patrick Palka  <ppalka@redhat.com>
            Jonathan Wakely  <jwakely@redhat.com>

        PR c++/100157
        * cp-trait.def (TYPE_PACK_ELEMENT): Define.
        * cp-tree.h (finish_trait_type): Add complain parameter.
        * cxx-pretty-print.cc (pp_cxx_trait): Handle
        CPTK_TYPE_PACK_ELEMENT.
        * parser.cc (cp_parser_constant_expression): Document default
        arguments.
        (cp_parser_trait): Handle CPTK_TYPE_PACK_ELEMENT.  Pass
        tf_warning_or_error to finish_trait_type.
        * pt.cc (tsubst) <case TRAIT_TYPE>: Handle non-type first
        argument.  Pass complain to finish_trait_type.
        * semantics.cc (finish_type_pack_element): Define.
        (finish_trait_type): Add complain parameter.  Handle
        CPTK_TYPE_PACK_ELEMENT.
        * tree.cc (strip_typedefs): Handle non-type first argument.
        Pass tf_warning_or_error to finish_trait_type.
        * typeck.cc (structural_comptypes) <case TRAIT_TYPE>: Use
        cp_tree_equal instead of same_type_p for the first argument.

2023-04-19  Patrick Palka  <ppalka@redhat.com>

        PR c++/109556
        * pt.cc (try_class_unification): Don't ggc_free the copy of
        'targs'.

2023-04-19  Jason Merrill  <jason@redhat.com>

        PR c++/108099
        * decl.cc (grokdeclarator): Keep typedef_decl for __int128_t.

2023-04-17  Patrick Palka  <ppalka@redhat.com>

        PR c++/109531
        * pt.cc (tsubst) <case BOUND_TEMPLATE_TEMPLATE_PARM>:
        In the level-lowering case just use lookup_template_class
        to rebuild the bound ttp.

2023-04-15  Jason Merrill  <jason@redhat.com>

        PR c++/109357
        * constexpr.cc (cxx_eval_constant_expression) [TARGET_EXPR]:
        Check for complex initializer.

2023-04-13  Patrick Palka  <ppalka@redhat.com>

        PR c++/109420
        * decl.cc (make_typename_type): Also ignore non-types during the
        lookup if tag_type corresponds to an elaborated-type-specifier.
        * pt.cc (tsubst) <case TYPENAME_TYPE>: Pass class_type or
        enum_type as tag_type to make_typename_type accordingly instead
        of always passing typename_type.

2023-04-13  Jason Merrill  <jason@redhat.com>

        PR c++/109277
        * semantics.cc (check_trait_type): Handle incomplete type directly.
        * typeck2.cc (cxx_incomplete_type_diagnostic): Remove assert.

2023-04-13  Jason Merrill  <jason@redhat.com>

        * typeck2.cc (cxx_incomplete_type_diagnostic): Return bool.
        * cp-tree.h (cxx_incomplete_type_diagnostic): Adjust.

2023-04-12  Jakub Jelinek  <jakub@redhat.com>

        * Make-lang.in (s-cp-module-version): New target.
        (cp/module.o): Depend on it.
        (MODULE_VERSION): Remove variable.
        (CFLAGS-cp/module.o): For -DMODULE_VERSION= argument just
        cat s-cp-module-version.

2023-04-09  Iain Sandoe  <iain@sandoe.co.uk>

        * coroutines.cc (coro_rewrite_function_body): Ensure that added
        bind expressions have scope blocks.

2023-04-04  Jason Merrill  <jason@redhat.com>

        PR c++/107484
        * decl2.cc (find_last_decl): Return early if DECL_USE_TEMPLATE.

2023-04-03  Patrick Palka  <ppalka@redhat.com>

        PR c++/109300
        * decl.cc (cp_finish_decl): Diagnose ordinary auto deduction
        with no initializer, instead of asserting.

2023-04-01  Patrick Palka  <ppalka@redhat.com>

        PR c++/109160
        * cp-tree.h (do_auto_deduction): Add defaulted tmpl parameter.
        * pt.cc (convert_template_argument): Pass 'in_decl' as 'tmpl' to
        do_auto_deduction.
        (tsubst_decl) <case VAR_/TYPE_DECL>: Pass 'tmpl' instead of 't' as
        'in_decl' to coerce_template_parms.
        (unify) <case TEMPLATE_PARM_INDEX>: Pass TPARMS_PRIMARY_TEMPLATE
        as 'tmpl' to do_auto_deduction.
        (do_auto_deduction): Document default arguments.  Rename local
        variable 'tmpl' to 'ctmpl'.  Use 'tmpl' to obtain a full set of
        template arguments for satisfaction in the adc_unify case.

2023-04-01  Patrick Palka  <ppalka@redhat.com>

        PR c++/53164
        PR c++/105848
        * pt.cc (invalid_tparm_referent_p): Accept ADDR_EXPR of
        FUNCTION_DECL.
        (instantiate_class_template): Call mark_template_arguments_used.
        (tsubst_copy_and_build) <case CALL_EXPR>: Revert r13-995 change.
        (mark_template_arguments_used): Define.
        (instantiate_body): Call mark_template_arguments_used.

2023-04-01  Iain Sandoe  <iain@sandoe.co.uk>

        PR c++/101118
        * coroutines.cc (flatten_await_stmt): Use the current count of
        promoted temporaries to build a unique name for the frame entries.

2023-03-30  Jason Merrill  <jason@redhat.com>

        PR c++/105452
        * search.cc (type_context_for_name_lookup): New.
        (accessible_p): Handle anonymous union.
        * init.cc (maybe_instantiate_nsdmi_init): Use
        type_context_for_name_lookup.
        * parser.cc (cp_parser_class_specifier): Likewise.
        * cp-tree.h (type_context_for_name_lookup): Declare.

2023-03-30  Jason Merrill  <jason@redhat.com>

        PR c++/105221
        * pt.cc (unify) [FUNCTION_TYPE]: Handle function pointer
        conversions.

2023-03-30  Jakub Jelinek  <jakub@redhat.com>

        PR c++/109319
        * decl2.cc (grok_array_decl): After emitting a pedwarn for
        -Wcomma-subscript, if processing_template_decl set orig_index_exp
        to compound expr from orig_index_exp_list.

2023-03-30  Jason Merrill  <jason@redhat.com>

        PR c++/107897
        PR c++/108887
        * decl2.cc (record_mangling): Use symtab_node::reset.

2023-03-30  Jakub Jelinek  <jakub@redhat.com>

        PR c++/109278
        * call.cc (convert_like_internal): If pedwarn for extended float
        type conversions doesn't report anything, avoid calling
        maybe_inform_about_fndecl_for_bogus_argument_init.

2023-03-29  Jason Merrill  <jason@redhat.com>

        PR c++/109321
        PR c++/109320
        * pt.cc (alias_ctad_tweaks): Rewrite deduced args.
        (type_targs_deducible_from): Handle null pack deduction.

2023-03-28  David Malcolm  <dmalcolm@redhat.com>

        PR c/107002
        * parser.cc (cp_parser_binary_expression): Update for new param of
        check_for_xor_used_as_pow.

2023-03-28  Jakub Jelinek  <jakub@redhat.com>

        PR c++/109309
        * contracts.cc: Include intl.h.
        (check_postcondition_result): Don't form diagnostics from two halves
        of an English message to allow translations.

2023-03-24  Patrick Palka  <ppalka@redhat.com>

        PR c++/106969
        * parser.cc (cp_parser_class_specifier): Clear current_class_ptr
        and current_class_ref sooner, before parsing a class definition.

2023-03-24  Jason Merrill  <jason@redhat.com>

        PR c++/105481
        * pt.cc (type_unification_real): Adjust for partial ordering.

2023-03-23  Jason Merrill  <jason@redhat.com>

        PR c++/105996
        * typeck.cc (build_ptrmemfunc): Drop 0-offset optimization
        and location wrappers.

2023-03-23  Marek Polacek  <polacek@redhat.com>

        PR c++/107532
        * call.cc (class_has_reference_member_p): New.
        (class_has_reference_member_p_r): New.
        (reference_like_class_p): Don't look for a specific constructor.
        Use a DFS walk with class_has_reference_member_p_r.

2023-03-23  Jason Merrill  <jason@redhat.com>

        PR c++/109241
        * pt.cc (find_parameter_packs_r): Handle null TREE_BINFO.

2023-03-22  Jason Merrill  <jason@redhat.com>

        PR c++/108390
        * pt.cc (unify): Use fold of build_nop instead of fold_convert.

2023-03-22  Jason Merrill  <jason@redhat.com>

        PR c++/108795
        * semantics.cc (finish_id_expression_1): Check scope before
        returning id_expression.

2023-03-22  Alex Coplan  <alex.coplan@arm.com>

        PR c++/109177
        * call.cc (build_over_call): Use make_temp_override to suppress
        both unavailable and deprecated warnings when calling
        build_addr_func.

2023-03-21  Jason Merrill  <jason@redhat.com>

        PR c++/106890
        * init.cc (maybe_instantiate_nsdmi_init): Don't leave
        current_function_decl set to a constructor.

2023-03-20  Marek Polacek  <polacek@redhat.com>

        PR c++/109159
        * call.cc (add_template_candidate_real): Add explicit decls to the
        set of candidates when the initializer is a braced-init-list.

2023-03-20  Jakub Jelinek  <jakub@redhat.com>

        PR c++/109164
        * cp-tree.h (var_needs_tls_wrapper): Declare.
        * decl2.cc (var_needs_tls_wrapper): No longer static.
        * decl.cc (cp_finish_decl): Clear TREE_READONLY on TLS variables
        for which a TLS wrapper will be needed.

2023-03-17  Jason Merrill  <jason@redhat.com>

        PR c++/108975
        * lambda.cc (prune_lambda_captures): Don't bother in a template.

2023-03-17  Jason Merrill  <jason@redhat.com>

        PR c++/109172
        * except.cc (build_throw): Check dtor access.

2023-03-17  Jason Merrill  <jason@redhat.com>

        PR c++/69410
        * friend.cc (do_friend): Handle namespace as scope argument.
        * decl.cc (grokdeclarator): Pass down in_namespace.

2023-03-16  Jason Merrill  <jason@redhat.com>

        PR c++/105809
        * init.cc (get_nsdmi): Split out...
        (maybe_instantiate_nsdmi_init): ...this function.
        * cp-tree.h: Declare it.
        * pt.cc (tsubst_expr): Use it.

2023-03-16  Jason Merrill  <jason@redhat.com>

        PR c++/108242
        * pt.cc (tsubst_expr) [TAG_DEFN]: Handle partial instantiation.

2023-03-16  Jason Merrill  <jason@redhat.com>

        PR c++/101869
        * semantics.cc (finish_qualified_id_expr): Don't try to build a
        pointer-to-member if the scope is an enumeration.

2023-03-16  Patrick Palka  <ppalka@redhat.com>

        PR c++/109030
        * constexpr.cc (maybe_constant_init_1): For an unevaluated
        non-manifestly-constant operand, don't constant evaluate
        and instead call fold_to_constant as in maybe_constant_value.

2023-03-16  Patrick Palka  <ppalka@redhat.com>

        PR c++/100288
        * constraint.cc (satisfaction_cache::get): Relax overly strict
        checking assert in the constraint recursion case.

2023-03-16  Jason Merrill  <jason@redhat.com>

        PR c++/105406
        * coroutines.cc (build_co_await): Handle lvalue 'o'.

2023-03-15  Jason Merrill  <jason@redhat.com>

        PR c++/103871
        PR c++/98056
        * typeck.cc (cp_build_modify_expr): Allow array initialization of
        DECL_ARTIFICIAL variable.

2023-03-15  Marek Polacek  <polacek@redhat.com>

        PR c++/107280
        * constexpr.cc (cxx_eval_store_expression): Strip location wrappers.

2023-03-15  Jason Merrill  <jason@redhat.com>

        PR c++/58538
        * semantics.cc (check_template_template_default_arg): Check
        maybe_get_template_decl_from_type_decl.

2023-03-15  Jason Merrill  <jason@redhat.com>

        PR c++/108179
        PR c++/104107
        PR c++/95036
        * pt.cc (coerce_template_template_parms): Use args from
        DECL_CONTEXT (arg_tmpl) instead of outer_args.

2023-03-15  Jason Merrill  <jason@redhat.com>

        PR c++/108179
        * pt.cc (coerce_template_template_parms): Take the arg and parm
        templates directly.
        (coerce_template_template_parm): Adjust.
        (template_template_parm_bindings_ok_p): Adjust.
        (convert_template_argument): Adjust.

2023-03-14  Patrick Palka  <ppalka@redhat.com>

        PR c++/96830
        * pt.cc (push_inline_template_parms_recursive): Set
        TEMPLATE_PARMS_CONSTRAINTS.
        (push_template_decl): For an out-of-line declaration, verify
        constraints for each enclosing template scope match those of the
        original template declaratation.

2023-03-14  Patrick Palka  <ppalka@redhat.com>

        PR c++/96830
        * pt.cc (redeclare_class_template): Add missing "of" in
        constraint mismatch diagnostic.
        (tsubst_friend_class): For an already declared class template,
        substitute and pass the friend declaration's constraints to
        redeclare_class_template instead of passing the existing
        template's constraints.

2023-03-14  Jason Merrill  <jason@redhat.com>

        PR c++/108468
        * pt.cc (unify_pack_expansion): Check that TPARMS_PRIMARY_TEMPLATE
        is non-null.

2023-03-14  Jason Merrill  <jason@redhat.com>

        PR c++/107310
        * cp-gimplify.cc (genericize_if_stmt): Restore folding
        of constant conditions.

2023-03-14  Jakub Jelinek  <jakub@redhat.com>

        PR c++/109096
        * tree.cc (record_has_unique_obj_representations): Ignore unnamed
        bitfields.

2023-03-13  Jason Merrill  <jason@redhat.com>

        PR c++/107128
        * parser.cc (cp_parser_set_decl_spec_type): Use
        redefined_builtin_type for extended_float_type_p.

2023-03-13  Marek Polacek  <polacek@redhat.com>

        PR c++/107532
        * call.cc (reference_like_class_p): Check for std::span.

2023-03-10  Jakub Jelinek  <jakub@redhat.com>

        PR c++/107558
        * decl.cc (cp_finish_decl): Don't clear TREE_READONLY on
        automatic non-aggregate variables just because of
        -fmerge-all-constants.

2023-03-10  Jakub Jelinek  <jakub@redhat.com>

        PR c++/109039
        * class.cc (end_of_class): For bit-fields, instead of computing
        offset as sum of byte_position (field) and DECL_SIZE_UNIT (field),
        compute it as sum of bit_position (field) and DECL_SIZE (field)
        divided by BITS_PER_UNIT rounded up.

2023-03-10  Jason Merrill  <jason@redhat.com>

        PR c++/108972
        * lambda.cc (compare_lambda_template_head): Check more
        for error_mark_node.

2023-03-10  Jason Merrill  <jason@redhat.com>

        PR c++/108566
        * mangle.cc (anon_aggr_naming_decl): New.
        (write_unqualified_name): Use it.

2023-03-10  Jakub Jelinek  <jakub@redhat.com>

        PR c/108079
        * decl.cc (poplevel): Suppress OPT_Wunused_variable warning
        after diagnosing it.

2023-03-10  Jason Merrill  <jason@redhat.com>

        PR c++/108099
        * decl.cc (grokdeclarator): Handle non-typedef typedef_decl.

2023-03-10  Jason Merrill  <jason@redhat.com>

        PR c++/108542
        * class.cc (instantiate_type): Strip location wrapper.

2023-03-09  Jason Merrill  <jason@redhat.com>

        PR c++/108773
        * init.cc (find_allocator_temps_r): New.
        (combine_allocator_temps): Replace find_allocator_temp.
        (build_vec_init): Adjust.

2023-03-09  Jason Merrill  <jason@redhat.com>

        DR 2664
        PR c++/102529
        * pt.cc (alias_ctad_tweaks): Continue after deduction failure.

2023-03-09  Jason Merrill  <jason@redhat.com>
            Michael Spertus  <mike@spertus.com>

        PR c++/105841
        * pt.cc (corresponding_template_parameter_list): Split out...
        (corresponding_template_parameter): ...from here.
        (find_template_parameters): Factor out...
        (find_template_parameter_info::find_in): ...this function.
        (find_template_parameter_info::find_in_recursive): New.
        (find_template_parameter_info::found): New.
        (alias_ctad_tweaks): Only add parms used in the deduced args.

2023-03-09  Jason Merrill  <jason@redhat.com>

        * cp-trait.def (IS_DEDUCIBLE): Add space to name.

2023-03-09  Jason Merrill  <jason@redhat.com>

        PR c++/105841
        * cp-trait.def (IS_DEDUCIBLE): New.
        * cxx-pretty-print.cc (pp_cxx_trait): Handle non-type.
        * parser.cc (cp_parser_trait): Likewise.
        * tree.cc (cp_tree_equal): Likewise.
        * pt.cc (tsubst_copy_and_build): Likewise.
        (type_targs_deducible_from): New.
        (alias_ctad_tweaks): Use it.
        * semantics.cc (trait_expr_value): Handle CPTK_IS_DEDUCIBLE.
        (finish_trait_expr): Likewise.
        * constraint.cc (diagnose_trait_expr): Likewise.
        * cp-tree.h (type_targs_deducible_from): Declare.

2023-03-07  Jason Merrill  <jason@redhat.com>

        PR c++/108526
        PR c++/106651
        * pt.cc (tsubst_function_decl): Don't replace the closure
        parameter if DECL_STATIC_FUNCTION_P.

2023-03-07  Marek Polacek  <polacek@redhat.com>

        PR c++/107532
        * call.cc (reference_like_class_p): New.
        (do_warn_dangling_reference): Add new bool parameter.  See through
        reference_like_class_p.

2023-03-07  Jakub Jelinek  <jakub@redhat.com>

        PR c++/109042
        * rtti.cc (emit_support_tinfo_1): Don't assert that last
        unemitted_tinfo_decls element is tinfo, instead pop from it only in
        that case.
        * decl2.cc (c_parse_final_cleanups): Don't call emit_tinfo_decl
        for unemitted_tinfO_decls which have already non-NULL DECL_INITIAL.

2023-03-07  Marek Polacek  <polacek@redhat.com>

        PR c++/109030
        * constexpr.cc (cxx_eval_call_expression): Relax assert.

2023-03-07  Marek Polacek  <polacek@redhat.com>

        PR c++/107939
        * constexpr.cc (potential_constant_expression_1) <case CALL_EXPR>: Pass
        'any' when recursing on a VAR_DECL and not a pointer to function.

2023-03-04  Jakub Jelinek  <jakub@redhat.com>

        PR c++/108702
        * constexpr.cc: Include toplev.h.
        (cxx_eval_constant_expression) <case DECL_EXPR>: When seeing a local
        static initialized by constant expression outside of a constexpr
        function which has been deferred by make_rtl_for_nonlocal_decl,
        call rest_of_decl_compilation on it.

2023-03-03  Patrick Palka  <ppalka@redhat.com>

        PR c++/108998
        * pt.cc (el_data::skipped_trees): New data member.
        (extract_locals_r): Push to skipped_trees any unevaluated
        contexts that we skipped over.
        (extract_local_specs): For the second walk, start from each
        tree in skipped_trees.

2023-03-03  Alexandre Oliva  <oliva@adacore.com>

        * typeck.cc (cp_build_binary_op): Suppress redundant warning
        for pfn null test in pmfn test with vbit-in-delta.

2023-03-02  Jakub Jelinek  <jakub@redhat.com>

        PR target/108883
        * cp-tree.h (enum cp_tree_index): Remove CPTI_FALLBACK_DFLOAT*_TYPE
        enumerators.
        (fallback_dfloat32_type, fallback_dfloat64_type,
        fallback_dfloat128_type): Remove.
        * rtti.cc (emit_support_tinfo_1): If not emitted already, call
        emit_tinfo_decl and remove from unemitted_tinfo_decls right away.
        (emit_support_tinfos): Move &dfloat*_type_node from fundamentals array
        into new fundamentals_with_fallback array.  Call emit_support_tinfo_1
        on elements of that array too, with the difference that if
        the type is NULL, use a fallback REAL_TYPE for it temporarily.
        Drop the !targetm.decimal_float_supported_p () handling.  Call
        targetm.emit_support_tinfos at the end.
        * mangle.cc (write_builtin_type): Remove references to
        fallback_dfloat*_type.  Handle bfloat16_type_node mangling.

2023-03-02  Patrick Palka  <ppalka@redhat.com>

        PR c++/108243
        PR c++/97553
        * cp-gimplify.cc (cp_fully_fold): Add an internal overload that
        additionally takes and propagate an mce_value parameter, and
        define the existing public overload in terms of it.
        (cp_fully_fold_init): Pass mce_false to cp_fully_fold.

2023-03-02  Patrick Palka  <ppalka@redhat.com>

        PR c++/108243
        * constexpr.cc (maybe_constant_init_1): Override
        manifestly_const_eval to true if is_static.

2023-03-02  Jakub Jelinek  <jakub@redhat.com>

        PR debug/108716
        * cp-gimplify.cc (cp_genericize_r) <case USING_STMT>: Set
        DECL_SOURCE_LOCATION on IMPORTED_DECL to expression location
        of USING_STMT or input_location.

2023-03-02  Marek Polacek  <polacek@redhat.com>

        PR c++/106259
        * parser.cc (class_decl_loc_t::diag_mismatched_tags): If the first
        lookup of SPEC didn't find anything, try to look for
        most_general_template.

2023-03-02  Jakub Jelinek  <jakub@redhat.com>

        PR c++/105839
        * parser.cc (cp_convert_omp_range_for): Allow in assert
        decomp_first_name without DECL_HAS_VALUE_EXPR_P if it has
        error_mark_node type.
        (cp_finish_omp_range_for): Don't set DECL_HAS_VALUE_EXPR_P back
        on decls which have error_mark_node type.

2023-03-01  Marek Polacek  <polacek@redhat.com>

        PR c++/107574
        * constexpr.cc (cxx_eval_constant_expression): Emit an error when
        a PTRMEM_CST cannot be evaluated.

2023-03-01  Patrick Palka  <ppalka@redhat.com>

        * pt.cc (tsubst_scope): Define.
        (tsubst_decl) <case USING_DECL>: Call tsubst_scope instead of
        calling tsubst_scope with tf_qualifying_scope set.
        (tsubst_qualified_id): Call tsubst_scope instead of
        calling tsubst with tf_qualifying_scope set.
        (tsubst_copy): Immediately delegate to tsubst for all TYPE_P
        trees.  Remove tf_qualifying_scope manipulation.
        <case SCOPE_REF>: Call tsubst_scope instead of calling
        tsubst with tf_qualifying_scope set.

2023-03-01  Patrick Palka  <ppalka@redhat.com>
            Jason Merrill  <jason@redhat.com>

        PR c++/108219
        PR c++/108218
        * constexpr.cc (fold_to_constant): Define.
        (maybe_constant_value): Move up early exit test for unevaluated
        operands.  Try reducing an unevaluated operand to a constant via
        fold_to_constant.
        (fold_non_dependent_expr_template): Add early exit test for
        CONSTANT_CLASS_P nodes.  Try reducing an unevaluated operand
        to a constant via fold_to_constant.
        * cp-tree.h (fold_to_constant): Declare.

2023-03-01  Jakub Jelinek  <jakub@redhat.com>

        PR c++/108606
        * constexpr.cc (potential_constant_expression_1) <case DECL_EXPR>:
        Only recurse on DECL_INITIAL (tmp) if tmp is a VAR_DECL, otherwise
        just return true.

2023-02-28  Patrick Palka  <ppalka@redhat.com>

        PR c++/108848
        * pt.cc (finish_template_variable): Move dependence check
        to here from ...
        (lookup_and_finish_template_variable): ... here.
        * semantics.cc (finish_id_expression_1): Call
        finish_template_variable sooner, before (and regardless of) the
        type_dependent_expression_p test.

2023-02-28  Marek Polacek  <polacek@redhat.com>

        PR c++/108550
        * pt.cc (lookup_and_finish_template_variable): Clear tf_partial.

2023-02-20  Marek Polacek  <polacek@redhat.com>

        PR c++/101073
        * constexpr.cc (cxx_eval_call_expression): Replace shortcutting trivial
        constructor/op= with a checking assert.

2023-02-20  Marek Polacek  <polacek@redhat.com>

        PR c++/108829
        * pt.cc (prepend_one_capture): Set LAMBDA_CAPTURE_EXPLICIT_P.
        (tsubst_lambda_expr): Pass LAMBDA_CAPTURE_EXPLICIT_P to
        prepend_one_capture.

2023-02-18  Jason Merrill  <jason@redhat.com>

        DR 2518
        PR c++/52809
        PR c++/53638
        PR c++/87389
        PR c++/89741
        PR c++/92099
        PR c++/104041
        PR c++/104691
        * semantics.cc (finish_static_assert): Don't diagnose in
        template context.

2023-02-17  Patrick Palka  <ppalka@redhat.com>

        PR c++/108243
        PR c++/97553
        * cp-gimplify.cc (enum fold_flags): Define.
        (fold_flags_t): Declare.
        (cp_fold_data::genericize): Replace this data member with ...
        (cp_fold_data::fold_flags): ... this.
        (cp_fold_r): Adjust use of cp_fold_data and calls to cp_fold.
        (cp_fold_function): Likewise.
        (cp_fold_maybe_rvalue): Add an internal overload that
        additionally takes and propagates a fold_flags_t parameter, and
        define the existing public overload in terms of it.
        (cp_fold_rvalue): Likewise.
        (cp_fully_fold_init): Adjust use of cp_fold_data.
        (fold_cache): Replace with ...
        (fold_caches): ... this 2-element array of caches.
        (get_fold_cache): Define.
        (clear_fold_cache): Adjust.
        (cp_fold): Add fold_flags_t parameter.  Use get_fold_cache.
        Pass flags to calls to cp_fold, cp_fold_rvalue and
        cp_fold_maybe_rvalue.
        <case CALL_EXPR>: If ff_mce_false is set, fold
        __builtin_is_constant_evaluated to false and pass mce_false to
        maybe_constant_value.

2023-02-17  Patrick Palka  <ppalka@redhat.com>

        * constexpr.cc (constexpr_call::manifestly_const_eval): Give
        it type int instead of bool.
        (constexpr_ctx::manifestly_const_eval): Give it type mce_value
        instead of bool.
        (cxx_eval_builtin_function_call): Adjust after making
        manifestly_const_eval tri-state.
        (cxx_eval_call_expression): Likewise.
        (cxx_eval_binary_expression): Likewise.
        (cxx_eval_conditional_expression): Likewise.
        (cxx_eval_constant_expression): Likewise.
        (cxx_eval_outermost_constant_expr): Likewise.
        (cxx_constant_value): Likewise.
        (cxx_constant_dtor): Likewise.
        (maybe_constant_value): Give manifestly_const_eval parameter
        type mce_value instead of bool and adjust accordingly.
        (fold_non_dependent_expr_template): Adjust call
        to cxx_eval_outermost_constant_expr.
        (fold_non_dependent_expr): Likewise.
        (maybe_constant_init_1): Likewise.
        * constraint.cc (satisfy_atom): Adjust call to
        maybe_constant_value.
        * cp-tree.h (enum class mce_value): Define.
        (maybe_constant_value): Adjust manifestly_const_eval parameter
        type and default argument.
        * decl.cc (compute_array_index_type_loc): Adjust call to
        maybe_constant_value.
        * pt.cc (convert_nontype_argument): Likewise.

2023-02-16  Patrick Palka  <ppalka@redhat.com>

        PR c++/107773
        * cp-tree.h (enum tsubst_flags): New flag tf_qualifying_scope.
        * decl.cc (make_typename_type): Use lookup_member instead of
        lookup_field.  If tf_qualifying_scope is set, pass want_type=true
        instead of =false to lookup_member.  Generalize format specifier
        in diagnostic to handle both type and non-type bindings.
        * pt.cc (tsubst_aggr_type_1): Clear tf_qualifying_scope.  Tidy
        the function.
        (tsubst_decl) <case USING_DECL>: Set tf_qualifying_scope when
        substituting USING_DECL_SCOPE.
        (tsubst): Clear tf_qualifying_scope right away and remember if
        it was set.  Do the same for tf_tst_ok sooner.
        <case TYPENAME_TYPE>: Set tf_qualifying_scope when substituting
        TYPE_CONTEXT.  Pass tf_qualifying_scope to make_typename_type
        if it was set.
        (tsubst_qualified_id): Set tf_qualifying_scope when substituting
        the scope.
        (tsubst_copy): Clear tf_qualifying_scope and remember if it was
        set.
        <case SCOPE_REF>: Set tf_qualifying_scope when substituting the
        scope.
        <case *_TYPE>: Pass tf_qualifying_scope to tsubst if it was set.
        * search.cc (lookup_member): Document default argument.

2023-02-16  Patrick Palka  <ppalka@redhat.com>

        * cp-tree.h: Mechanically drop static from static inline
        functions via s/^static inline/inline/g.

2023-02-15  Marek Polacek  <polacek@redhat.com>

        PR c++/106675
        * call.cc (joust_maybe_elide_copy): Return false for ck_ambig.

2023-02-10  Marek Polacek  <polacek@redhat.com>

        PR c++/107079
        * call.cc (set_up_extended_ref_temp): Pass var to maybe_constant_init.

2023-02-09  Tobias Burnus  <tobias@codesourcery.com>

        * parser.cc (cp_parser_omp_allocate): Parse align
        clause and check for restrictions.

2023-02-09  Jakub Jelinek  <jakub@redhat.com>

        PR c++/108698
        * mangle.cc (write_expression, write_template_arg): Handle
        EXCESS_PRECISION_EXPR with REAL_CST operand as
        write_template_arg_literal on fold_convert of the REAL_CST
        to EXCESS_PRECISION_EXPR type.

2023-02-06  Patrick Palka  <ppalka@redhat.com>

        PR c++/107461
        * cp-tree.h (call_expr_dependent_name): Declare.
        * pt.cc (iterative_hash_template_arg) <case CALL_EXPR>: Use
        call_expr_dependent_name instead of dependent_name.
        * tree.cc (call_expr_dependent_name): Define.
        (called_fns_equal): Adjust to take two CALL_EXPRs instead of
        CALL_EXPR_FNs thereof.  Use call_expr_dependent_name instead
        of dependent_name.
        (cp_tree_equal) <case CALL_EXPR>: Adjust call to called_fns_equal.

2023-02-03  Marek Polacek  <polacek@redhat.com>

        PR c++/108158
        * constexpr.cc (cxx_eval_array_reference): Don't replace
        new_ctx.object.

2023-02-03  Patrick Palka  <ppalka@redhat.com>

        PR c++/107461
        * semantics.cc (finish_call_expr): Strip ADDR_EXPR from
        the selected callee during overload set pruning.

2023-02-03  Patrick Palka  <ppalka@redhat.com>

        PR c++/96745
        * class.cc (check_methods): Diagnose an unviable OVERLOAD
        set for CLASSTYPE_DESTRUCTOR differently from an ambiguous one.
        Then prune the OVERLOAD to a single function.
        (check_bases_and_members): Handle CLASSTYPE_DESTRUCTOR being
        an OVERLOAD when calling deduce_noexcept_on_destructor.
        Document why it has to be called before check_methods.

2023-02-03  Patrick Palka  <ppalka@redhat.com>

        PR c++/108579
        * class.cc (check_methods): Swap order of constraints_satisfied_p
        and copy/move_fn_p tests.

2023-02-01  Marek Polacek  <polacek@redhat.com>

        PR c++/107755
        * call.cc (build_new_op): Don't call warn_logical_operator when
        processing a template.

2023-02-01  Jakub Jelinek  <jakub@redhat.com>

        PR c++/108607
        * constexpr.cc (cxx_eval_constant_expression): Handle OMP_*
        and OACC_* constructs as non-constant.
        (potential_constant_expression_1): Handle OMP_SCAN and OMP_SCOPE.

2023-02-01  Jason Merrill  <jason@redhat.com>

        * class.cc (note_name_declared_in_class): Change from permerror to
        -Wchanges-meaning pedwarn, forcing -pedantic-errors for most cases.

2023-01-31  Jason Merrill  <jason@redhat.com>

        PR c++/108559
        * cp-gimplify.cc (any_non_eliding_target_exprs): New.
        (cp_genericize_init): Check it.

2023-01-31  Marek Polacek  <polacek@redhat.com>

        PR c++/107593
        PR c++/108597
        * cp-tree.h (instantiation_dependent_expression_p): Don't
        declare here.

2023-01-26  Marek Polacek  <polacek@redhat.com>

        PR c++/105300
        * parser.cc: Remove unnecessary forward declarations.
        (cp_parser_string_literal): New wrapper.
        (cp_parser_string_literal_common): Renamed from
        cp_parser_string_literal.  Add a bool parameter.  Give an error when
        UDLs are not permitted.
        (cp_parser_userdef_string_literal): New wrapper.
        (finish_userdef_string_literal): Renamed from
        cp_parser_userdef_string_literal.
        (cp_parser_primary_expression): Call cp_parser_userdef_string_literal
        instead of cp_parser_string_literal.
        (cp_parser_linkage_specification): Move a variable declaration closer
        to its first use.
        (cp_parser_static_assert): Likewise.
        (cp_parser_operator): Call cp_parser_userdef_string_literal instead of
        cp_parser_string_literal.
        (cp_parser_asm_definition): Move a variable declaration closer to its
        first use.
        (cp_parser_asm_specification_opt): Move variable declarations closer to
        their first use.
        (cp_parser_asm_operand_list): Likewise.
        (cp_parser_asm_clobber_list): Likewise.

2023-01-26  Jakub Jelinek  <jakub@redhat.com>

        PR c++/108503
        * parser.cc (cp_convert_omp_range_for): If cp_finish_decomp has been
        called in !processing_template_decl with processing_template_decl
        temporarily set, clear DECL_HAS_VALUE_EXPR_P on the vars temporarily.
        (cp_finish_omp_range_for): And set it back again here.

2023-01-25  Jakub Jelinek  <jakub@redhat.com>

        PR c++/108525
        * mangle.cc (write_closure_type_name): Don't assume all
        lambda operator() fns are methods.

2023-01-24  Jason Merrill  <jason@redhat.com>

        PR c++/108504
        * parser.cc (cp_lexer_new_main): Pass C_LEX_STRING_NO_JOIN for first
        token, too.

2023-01-24  Jason Merrill  <jason@redhat.com>

        PR c++/108526
        * pt.cc (tsubst_function_decl): Handle static lambda.

2023-01-24  Jakub Jelinek  <jakub@redhat.com>

        PR c++/108474
        * cp-gimplify.cc (cp_fold_r): Revert 2023-01-19 changes.

2023-01-24  Jason Merrill  <jason@redhat.com>

        PR c++/107303
        PR c++/107329
        * cp-gimplify.cc (cp_fold_r) [TARGET_EXPR]: In case of double
        TARGET_EXPR, keep the outer one instead of the inner one.
        (maybe_replace_decl): New.

2023-01-23  Jason Merrill  <jason@redhat.com>

        PR c++/107267
        * cp-gimplify.cc (cp_gimplify_init_expr): Allow unexpected elision
        of trivial types.

2023-01-23  Marek Polacek  <polacek@redhat.com>

        PR c++/107797
        * cvt.cc (ocp_convert): copy_warning when creating a new
        COMPOUND_EXPR.
        * init.cc (build_new_1): Suppress -Wunused-value on
        compiler-generated COMPOUND_EXPRs.

2023-01-23  Jason Merrill  <jason@redhat.com>

        PR c++/108195
        * call.cc (build_user_type_conversion_1): Check whether the
        iterators also find a list ctor.

2023-01-23  Jason Merrill  <jason@redhat.com>

        PR c++/108496
        * decl.cc (grokdeclarator): Check whether DECL_RESULT is already
        set.

2023-01-23  Jason Merrill  <jason@redhat.com>

        PR c++/53288
        DR 1299
        * call.cc (extend_ref_init_temps_1): Handle ptrmem expression.

2023-01-19  Jakub Jelinek  <jakub@redhat.com>

        PR c++/108437
        * cp-tree.h (keep_unused_object_arg): Declare.
        * call.cc (keep_unused_object_arg): No longer static.
        * tree.cc (build_min_non_dep_op_overload): Handle ARRAY_REF
        with overload being static member function.

2023-01-19  Jakub Jelinek  <jakub@redhat.com>

        PR c++/53932
        * cp-gimplify.cc (cp_fold_r): During cp_fully_fold_init replace
        DECL_ANON_UNION_VAR_P VAR_DECLs with their corresponding
        DECL_VALUE_EXPR.

2023-01-16  Jakub Jelinek  <jakub@redhat.com>

        PR c++/105593
        * decl.cc (cp_finish_decl): Check warning_enabled_at
        at the DECL_SOURCE_LOCATION (decl) for OPT_Winit_self instead
        of warn_init_self.

2023-01-14  Jakub Jelinek  <jakub@redhat.com>

        PR c++/108365
        * typeck.cc (cp_build_binary_op): Use may_shorten_divmod for integral
        division or modulo.

2023-01-13  Jakub Jelinek  <jakub@redhat.com>

        PR c++/108285
        * cvt.cc (cp_convert_and_check): For EXCESS_PRECISION_EXPR
        use its operand except that for warning purposes use the original
        EXCESS_PRECISION_EXPR.
        * call.cc (convert_like_internal): Only look through
        EXCESS_PRECISION_EXPR when calling cp_convert, not when calling
        cp_convert_and_check.

2023-01-09  Jakub Jelinek  <jakub@redhat.com>

        PR c++/105838
        PR c++/108047
        PR c++/108266
        * call.cc (maybe_init_list_as_range): Always return NULL_TREE if
        processing_template_decl.

2023-01-05  Patrick Palka  <ppalka@redhat.com>

        PR c++/108275
        * parser.cc (cp_parser_class_head): Use dk_deferred instead of
        dk_no_check when parsing the class name.

2023-01-05  Jakub Jelinek  <jakub@redhat.com>

        PR c++/108286
        * semantics.cc (finish_omp_target_clauses): Ignore clauses other than
        OMP_CLAUSE_MAP.

2023-01-04  Patrick Palka  <ppalka@redhat.com>

        PR c++/108282
        * decl2.cc (mark_single_function): Ignore mark_used failure
        only in a non-SFINAE context rather than in a SFINAE one.

2023-01-04  Jakub Jelinek  <jakub@redhat.com>

        PR c++/108206
        * decl.cc (merge_default_template_args): Return false if either
        new_parm or old_parm are erroneous.

\f
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