2024-12-29  Nathaniel Shead  <nathanieloshead@gmail.com>

	PR c++/100358
	PR c++/115008
	* module.cc (elf_out::create_mapping): Fallback to ftruncate if
	posix_fallocate fails.

2024-12-29  Nathaniel Shead  <nathanieloshead@gmail.com>

	PR c++/106221
	PR c++/110680
	* pt.cc (check_default_tmpl_args): Check this is actually a
	lambda declaration and not just a typedef.
	(push_template_decl): Likewise.

2024-12-27  Jakub Jelinek  <jakub@redhat.com>

	Revert:
	2024-12-18  Jakub Jelinek  <jakub@redhat.com>

	* parser.cc (cp_lexer_new_main): Attempt to optimize large sequences
	of CPP_NUMBER with int type and values 0-255 separated by CPP_COMMA
	into CPP_EMBED with RAW_DATA_CST u.value.

2024-12-20  Jakub Jelinek  <jakub@redhat.com>

	PR c++/110345
	* tree.cc (handle_maybe_unused_attribute): New function.
	(std_attributes): Use handle_maybe_unused_attribute instead
	of handle_unused_attribute for maybe_unused attribute.

2024-12-20  Jakub Jelinek  <jakub@redhat.com>

	PR c++/110345
	* parser.cc (cp_parser_std_attribute): Don't transform
	[[deprecated]] into [[gnu::deprecated]].
	* tree.cc (handle_std_deprecated_attribute): New function.
	(std_attributes): Add deprecated entry.

2024-12-20  Nathaniel Shead  <nathanieloshead@gmail.com>

	PR c++/116401
	* decl.cc (grokfndecl): Mark deduction guides as 'inline'.
	* module.cc (check_module_decl_linkage): Implement checks for
	non-inline external linkage definitions in headers.

2024-12-20  Nathaniel Shead  <nathanieloshead@gmail.com>

	* cp-tree.h (check_module_decl_linkage): Declare.
	* decl2.cc (finish_static_data_member_decl): Check linkage.
	* module.cc (set_originating_module): Adjust comment.
	(check_module_decl_linkage): New function.
	* name-lookup.cc (do_namespace_alias): Build alias with
	specified location, check linkage.
	(pushtag): Check linkage.
	(push_namespace): Slightly clarify error message.
	* name-lookup.h (do_namespace_alias): Add location parameter.
	* parser.cc (cp_parser_namespace_alias_definition): Pass
	identifier location to do_namespace_alias.
	(cp_parser_alias_declaration): Check linkage.
	(cp_parser_init_declarator): Check linkage.
	(cp_parser_function_definition_after_declarator): Check linkage.
	(cp_parser_save_member_function_body): Check linkage.
	* pt.cc (finish_concept_definition): Mark as public, check
	linkage.

2024-12-20  Nathaniel Shead  <nathanieloshead@gmail.com>

	* module.cc (depset::hash::add_binding_entity): Also walk
	unnamed namespaces.
	(module_state::write_namespaces): Adjust assertion.
	* name-lookup.cc (push_namespace): Move anon using-directive
	handling to...
	(make_namespace_finish): ...here.

2024-12-20  Nathaniel Shead  <nathanieloshead@gmail.com>

	* cp-objcp-common.cc (cp_tree_size): Add TU_LOCAL_ENTITY.
	* cp-tree.def (TU_LOCAL_ENTITY): New tree code.
	* cp-tree.h (DECL_TEMPLATE_INSTANTIATIONS): Update comment.
	(struct tree_tu_local_entity): New type.
	(TU_LOCAL_ENTITY_NAME): New accessor.
	(TU_LOCAL_ENTITY_LOCATION): New accessor.
	(enum cp_tree_node_structure_enum): Add TS_CP_TU_LOCAL_ENTITY.
	(union GTY): Add tu_local_entity field.
	* module.cc (enum tree_tag): New flag DB_REFS_TU_LOCAL_BIT.
	(depset::has_defn): Override for TU-local entities.
	(depset::refs_tu_local): New accessor.
	(depset::hash::ignore_tu_local): New field.
	(depset::hash::hash): Initialize it.
	(trees_out::tree_tag::tt_tu_local): New flag.
	(trees_out::writing_local_entities): New field.
	(trees_out::is_initial_scan): New function.
	(trees_out::tu_local_count): New counter.
	(trees_out::trees_out): Initialize writing_local_entities.
	(dumper::impl::nested_name): Handle TU_LOCAL_ENTITY.
	(trees_out::instrument): Report TU-local entity counts.
	(trees_out::decl_value): Early exit for TU-local entities.
	(trees_in::decl_value): Handle typedefs of TU-local entities.
	(trees_out::decl_node): Adjust assertion to cope with early exit
	of TU-local deps.  Always write TU-local entities by value.
	(trees_out::type_node): Handle TU-local types.
	(trees_out::has_tu_local_dep): New function.
	(trees_out::find_tu_local_decl): New function.
	(trees_out::tree_node): Intercept TU-local entities and write
	placeholder values for them instead of normal streaming.
	(trees_in::tree_node): Handle TU-local entities and TU-local
	template results.
	(trees_out::write_function_def): Ignore exposures in non-inline
	function bodies.
	(trees_out::write_var_def): Ignore exposures in initializers.
	(trees_out::write_class_def): Ignore exposures in friend decls.
	(trees_in::read_class_def): Skip TU-local friends.
	(trees_out::write_definition): Record whether we're writing a
	decl which refers to TU-local entities.
	(depset::hash::add_dependency): Only mark as exposure if we're not
	ignoring TU-local entities.
	(depset::hash::find_dependencies): Use depset's own is_key_order
	function rather than delegating via walker.  Pass whether the
	decl has ignored TU-local entities in its definition.
	(template_has_explicit_inst): New function.
	(depset::hash::finalize_dependencies): Implement new warning
	Wtemplate-names-tu-local.
	(module_state::intercluster_seed): Don't seed TU-local deps.
	(module_state::write_cluster): Pass whether the decl has ignored
	TU-local entities in its definition.
	* pt.cc (register_specialization): Always register in a module.
	(complain_about_tu_local_entity): New function.
	(expr_contains_tu_local_entity): New function.
	(function_contains_tu_local_entity): New function.
	(instantiate_class_template): Skip TU-local friends.
	(tsubst_decl): Handle typedefs of TU-local entities.
	(tsubst): Complain about TU-local entities.
	(dependent_operand_p): Early exit for TU-local entities so we
	don't attempt to constant-evaluate them.
	(tsubst_expr): Detect and complain about TU-local entities.

2024-12-20  Nathaniel Shead  <nathanieloshead@gmail.com>

	* tree.cc (decl_linkage): Treat DECL_SELF_REFERENCE_P like
	DECL_IMPLICIT_TYPEDEF_P.
	* name-lookup.cc (do_namespace_alias): Fix linkage.
	* module.cc (DB_IS_INTERNAL_BIT): Rename to...
	(DB_TU_LOCAL_BIT): ...this.
	(DB_REFS_INTERNAL_BIT): Rename to...
	(DB_EXPOSURE_BIT): ...this.
	(depset::hash::is_internal): Rename to...
	(depset::hash::is_tu_local): ...this.
	(depset::hash::refs_internal): Rename to...
	(depset::hash::is_exposure): ...this.
	(depset::hash::is_tu_local_entity): New function.
	(depset::hash::has_tu_local_tmpl_arg): New function.
	(depset::hash::is_tu_local_value): New function.
	(depset::hash::make_dependency): Check for TU-local entities.
	(depset::hash::add_dependency): Make current an exposure
	whenever it references a TU-local entity.
	(depset::hash::add_binding_entity): Don't create bindings for
	any TU-local entity.
	(depset::hash::finalize_dependencies): Rename flags and adjust
	diagnostic messages to report exposures of TU-local entities.
	(depset::tarjan::connect): Don't include any TU-local depsets.
	(depset::hash::connect): Likewise.

2024-12-19  Patrick Palka  <ppalka@redhat.com>

	PR c++/118069
	* constraint.cc (atom_hasher): Define here, instead of ...
	* cp-tree.h (atom_hasher): ... here.
	* logic.cc (clause::m_set): Use pointer instead of structural
	hashing.

2024-12-19  Patrick Palka  <ppalka@redhat.com>

	PR c++/118069
	* logic.cc (dnf_size_r): Use HOST_WIDE_INT instead of int, and
	handle overflow gracefully via add_sat_hwi and mul_sat_hwi.
	(cnf_size_r): Likewise.
	(dnf_size): Use HOST_WIDE_INT instead of int.
	(cnf_size): Likewise.

2024-12-19  Marek Polacek  <polacek@redhat.com>
	    Jason Merrill  <jason@redhat.com>

	PR c++/117980
	* constexpr.cc (cxx_eval_outermost_constant_expr): If there's
	an object to initialize, take its type.  Don't set the type
	in the constexpr dtor case.

2024-12-18  Jakub Jelinek  <jakub@redhat.com>

	* parser.cc (cp_lexer_new_main): Attempt to optimize large sequences
	of CPP_NUMBER with int type and values 0-255 separated by CPP_COMMA
	into CPP_EMBED with RAW_DATA_CST u.value.

2024-12-18  Tobias Burnus  <tburnus@baylibre.com>

	* decl.cc (omp_declare_variant_finalize_one): Handle
	append_args.
	* parser.cc (cp_parser_omp_clause_init_modifiers): New;
	split of from ...
	(cp_parser_omp_clause_init):  ... here; call it.
	(cp_parser_omp_all_clauses): Replace interop parsing by
	a call to ...
	(cp_parser_omp_clause_interop): ... this new function;
	set tree used/read.
	(cp_finish_omp_declare_variant): Parse 'append_args' clause.
	(cp_parser_omp_declare): Update comment.
	* pt.cc (tsubst_attribute, tsubst_omp_clauses): Handle template
	substitution also for declare variant's append_args clause,
	using for 'init' the same code as for interop's init clause.

2024-12-18  Jakub Jelinek  <jakub@redhat.com>

	* parser.cc (cp_parser_postfix_expression): Use
	type_id_in_expr_sentinel instead of manually saving+setting/restoring
	parser->in_type_id_in_expr_p around cp_parser_type_id calls.
	(cp_parser_has_attribute_expression): Likewise.
	(cp_parser_cast_expression): Likewise.
	(cp_parser_sizeof_operand): Likewise.

2024-12-18  Jakub Jelinek  <jakub@redhat.com>

	PR c++/110345
	* cp-tree.h (enum cp_tree_index): Add CPTI_INTERNAL_IDENTIFIER.
	(internal_identifier): Define.
	(internal_attribute_table): Declare.
	* parser.cc (cp_parser_exception_declaration): Error on alignas
	on exception declaration.
	(cp_parser_std_attribute_spec): Turn alignas into internal
	ns aligned attribute rather than gnu.
	* decl.cc (initialize_predefined_identifiers): Initialize
	internal_identifier.
	* tree.cc (handle_alignas_attribute): New function.
	(internal_attributes): New variable.
	(internal_attribute_table): Likewise.
	* cp-objcp-common.h (cp_objcp_attribute_table): Add
	internal_attribute_table entry.

2024-12-18  Jakub Jelinek  <jakub@redhat.com>

	PR c++/110345
	* parser.cc (cp_parser_type_specifier_seq): Chain cxx11_attribute_p
	attributes after any type specifier in the is_declaration case
	to std_attributes rather than attributes.  Set also ds_attribute
	or ds_std_attribute locations if not yet set.
	(cp_parser_exception_declaration): Pass &type_specifiers.attributes
	instead of NULL as last argument, call cp_decl_attributes.

2024-12-18  Jakub Jelinek  <jakub@redhat.com>

	PR c++/110345
	* decl.cc (check_tag_decl): Diagnose std_attributes.

2024-12-18  Jakub Jelinek  <jakub@redhat.com>

	PR c++/110345
	* parser.cc (cp_parser_decl_specifier_seq): Call
	warn_misplaced_attr_for_class_type for all OVERLOAD_TYPE_P
	types, not just CLASS_TYPE_P.  When not calling
	warn_misplaced_attr_for_class_type, don't clear attrs and
	add it to decl_specs->std_attributes instead.

2024-12-18  Jakub Jelinek  <jakub@redhat.com>

	PR c/41045
	* semantics.cc (finish_asm_stmt): Reject - constraint modifier inside
	of a function.

2024-12-18  Jakub Jelinek  <jakub@redhat.com>

	* semantics.cc (finish_asm_stmt): Diagnose invalid ":" constraint
	uses.

2024-12-18  Lewis Hyatt  <lhyatt@gmail.com>

	PR c++/117970
	* module.cc (module_state::read_ordinary_maps): Change argument to
	line_map_uint_t instead of unsigned int.

2024-12-17  Marek Polacek  <polacek@redhat.com>

	PR c++/118073
	* error.cc (dump_expr) <case NONTYPE_ARGUMENT_PACK>: New case.

2024-12-17  Marek Polacek  <polacek@redhat.com>

	PR c++/117985
	* init.cc (build_vec_init): Pop CLEANUP_FLAGS if we're not
	generating the loop.

2024-12-17  Jakub Jelinek  <jakub@redhat.com>

	PR c++/116108
	* decl.cc (grokdeclarator): Pass TYYPE_MAIN_VARIANT (type)
	rather than type to same_type_p when checking if the non-static
	data member doesn't have current class type.

2024-12-16  David Malcolm  <dmalcolm@redhat.com>

	PR sarif-replay/117943
	* error.cc (auto_context_line::~auto_context_line): Use
	source-printing options from text_output.

2024-12-15  Iain Sandoe  <iain@sandoe.co.uk>

	* coroutines.cc
	(cp_coroutine_transform::wrap_original_function_body): Use
	finish_if_stmt instead of manually applying the same process.

2024-12-15  Iain Sandoe  <iain@sandoe.co.uk>

	* coroutines.cc (expand_one_await_expression): Update the
	resume index before checking if the coroutine is ready.

2024-12-15  Iain Sandoe  <iain@sandoe.co.uk>

	PR c++/98935
	* coroutines.cc (register_local_var_uses): Add a pset to the
	tree walk to avoid visiting the same BIND_EXPR twice.  Make
	an early exit for cases that the callback does not apply.
	(cp_coroutine_transform::apply_transforms): Add a pset to the
	tree walk for register_local_vars.

2024-12-14  Nathaniel Shead  <nathanieloshead@gmail.com>

	PR c++/90321
	* decl.cc (find_decomp_class_base): Check for decomposing a
	lambda closure type.  Report base class chains if needed.
	(cp_finish_decomp): Remove no-longer-needed check.

2024-12-13  Tobias Burnus  <tburnus@baylibre.com>

	* parser.cc (cp_parser_omp_construct, cp_parser_pragma): Reject
	OpenMP expressions in constexpr functions.

2024-12-12  Tobias Burnus  <tburnus@baylibre.com>

	* parser.cc (OMP_DISPATCH_CLAUSE_MASK): Add has_device_addr clause.

2024-12-11  Jakub Jelinek  <jakub@redhat.com>

	PR c++/117614
	* constexpr.cc (cxx_eval_store_expression): For stores to
	DECL_ANON_UNION_VAR_P vars just continue with DECL_VALUE_EXPR
	of it, without setting evaluated to true or full
	cxx_eval_constant_expression.

2024-12-11  David Malcolm  <dmalcolm@redhat.com>

	* decl.cc: Add #include "diagnostic-highlight-colors.h"
	and #include "pretty-print-markup.h".
	(complain_about_incompatible_declspecs): New.
	(grokdeclarator): Use it when complaining about both 'signed' and
	'unsigned', and both 'long' and 'short'.

2024-12-11  David Malcolm  <dmalcolm@redhat.com>

	* call.cc (print_z_candidates): Count the number of
	candidates and issue a note stating the count at an
	intermediate nesting level.  Number the individual
	candidates.

2024-12-10  Arsen Arsenović  <arsen@aarsen.me>
	    Iain Sandoe  <iain@sandoe.co.uk>

	* coroutines.cc (dump_record_fields): New helper.  Iterates a
	RECORD_TYPEs TYPE_FIELDS and pretty-prints them.
	(dmp_str): New.  The lang-coro dump stream.
	(coro_dump_id): New.  ID of the lang-coro dump.
	(coro_dump_flags): New.  Flags passed to the lang-coro dump.
	(coro_maybe_dump_initial_function): New helper.  Prints, if
	dumping is enabled, the fndecl passed to it as the original
	function.
	(coro_maybe_dump_ramp): New.  Prints the ramp function passed to
	it, if dumping is enabled.
	(coro_maybe_dump_transformed_functions): New.
	(cp_coroutine_transform::apply_transforms): Initialize the
	lang-coro dump.  Call coro_maybe_dump_initial_function on the
	original function, as well as coro_maybe_dump_ramp, after the
	transformation into the ramp is finished.
	(cp_coroutine_transform::finish_transforms): Call
	coro_maybe_dump_transformed_functions on the built actor and
	destroy.
	* cp-objcp-common.cc (cp_register_dumps): Register the coroutine
	dump.
	* cp-tree.h (coro_dump_id): Declare as extern.
	* cxx-pretty-print.cc (pp_cxx_template_parameter): Don't call
	TREE_TYPE on a TREE_LIST cell.
	(cxx_pretty_printer::declaration): Handle FIELD_DECL similar to
	VAR_DECL.

2024-12-10  Marek Polacek  <polacek@redhat.com>

	PR c++/117788
	* typeck.cc (cp_build_binary_op) <case EQ_EXPR>: Don't check
	warn_array_compare.  Check tf_warning_or_error instead of just
	tf_warning.  Maybe return an error_mark_node in C++26.
	<case LE_EXPR>: Likewise.

2024-12-09  Marek Polacek  <polacek@redhat.com>
	    Patrick Palka  <ppalka@redhat.com>

	PR c++/116416
	* cp-gimplify.cc (cp_fold_r) <case TARGET_EXPR>: Try to fold
	TARGET_EXPR_INITIAL and replace it with the folded result if
	it's TREE_CONSTANT.

2024-12-09  Matthew Malcomson  <mmalcomson@nvidia.com>

	* call.cc (build_cxx_call):  Pass `complain` parameter to
	check_builtin_function_arguments.  Take its value from the
	`tsubst_flags_t` type `complain & tf_error`.
	* semantics.cc (finish_call_expr):  Pass `complain` parameter to
	resolve_overloaded_builtin.  Take its value from the
	`tsubst_flags_t` type `complain & tf_error`.

2024-12-06  David Malcolm  <dmalcolm@redhat.com>

	PR other/116253
	* call.cc (print_conversion_rejection): Remove leading space from
	diagnostic messages.
	(print_conversion_rejection): Likewise.
	(print_arity_information): Likewise.
	(print_z_candidate): Likewise.  Add auto_diagnostic_nesting_level
	before calls to fn_type_unification and diagnose_constraints.
	(print_z_candidates): Add auto_diagnostic_nesting_level before
	looping over candidates.
	(conversion_null_warnings): Remove leading space from
	diagnostic messages.
	(maybe_inform_about_fndecl_for_bogus_argument_init): Likewise.
	* constraint.cc (tsubst_valid_expression_requirement): Add
	auto_diagnostic_nesting_level when showing why the expression is
	invalid.
	(satisfy_disjunction): Likewise when showing operans, and again
	when replaying each branch of the disjunction.
	(diagnose_constraints): Likewise when replaying satisfaction.
	* error.cc (cp_diagnostic_text_starter): Set prefix.
	(print_instantiation_full_context): Only show the file
	if we're not showing nesting or the user has opted in to
	showing location information in nested diagnostics.
	(class auto_context_line): New.
	(print_instantiation_partial_context_line): Replace calls to
	print_location and to diagnostic_show_locus with an
	auto_context_line.
	(print_instantiation_partial_context): Replace calls to
	print_location with an auto_context_line.
	(maybe_print_constexpr_context): Likewise.
	(print_constrained_decl_info): Likewise.
	(print_concept_check_info): Likewise.
	(print_constraint_context_head): Likewise.
	(print_requires_expression_info): Likewise.

2024-12-06  David Malcolm  <dmalcolm@redhat.com>

	* cp-gimplify.cc: Include "gcc-urlifier.h".
	(process_stmt_hotness_attribute): Use auto_urlify_attributes with
	OPT_Wattributes.
	* cvt.cc: Include "gcc-urlifier.h".
	(maybe_warn_nodiscard): Use auto_urlify_attributes with
	OPT_Wunused_result.
	* decl.cc: Include "gcc-urlifier.h".
	(start_decl): Use auto_urlify_attributes.
	(start_preparsed_function): Likewise.

2024-12-06  David Malcolm  <dmalcolm@redhat.com>

	* name-lookup.cc (suggest_alternative_in_explicit_scope):
	Gracefully handle non-namespaces, such as scoped enums.
	* parser.cc (cp_parser_name_lookup_error): Provide
	a name_hint for the case where we're in an explicit scope.
	* std-name-hint.gperf: Add <concepts>.
	* std-name-hint.h: Regenerate.

2024-12-06  David Malcolm  <dmalcolm@redhat.com>

	PR other/116253
	* error.cc (print_location): Move to earlier in the file.
	(print_instantiation_partial_context_line): Replace
	location-printing logic with a call to print_location.
	(print_instantiation_partial_context): Likewise, splitting up
	pp_verbatim calls.
	(maybe_print_constexpr_context): Likewise.

2024-12-06  Jakub Jelinek  <jakub@redhat.com>

	* cp-tree.h (class raw_data_iterator): New type.
	(class raw_data_range): New type.
	* parser.cc (cp_parser_postfix_open_square_expression): Handle
	parsing of CPP_EMBED.
	(cp_parser_parenthesized_expression_list): Likewise.  Use
	cp_lexer_next_token_is.
	(cp_parser_expression): Handle parsing of CPP_EMBED.
	(cp_parser_template_argument_list): Likewise.
	(cp_parser_initializer_list): Likewise.
	(cp_parser_oacc_clause_tile): Likewise.
	(cp_parser_omp_tile_sizes): Likewise.
	* pt.cc (tsubst_expr): Handle RAW_DATA_CST.
	* constexpr.cc (reduced_constant_expression_p): Likewise.
	(raw_data_cst_elt): New function.
	(find_array_ctor_elt): Handle RAW_DATA_CST.
	(cxx_eval_array_reference): Likewise.
	* typeck2.cc (digest_init_r): Emit -Wnarrowing and/or -Wconversion
	diagnostics.
	(process_init_constructor_array): Handle RAW_DATA_CST.
	* decl.cc (maybe_deduce_size_from_array_init): Likewise.
	(is_direct_enum_init): Fail for RAW_DATA_CST.
	(cp_maybe_split_raw_data): New function.
	(consume_init): New function.
	(reshape_init_array_1): Add VECTOR_P argument.  Handle RAW_DATA_CST.
	(reshape_init_array): Adjust reshape_init_array_1 caller.
	(reshape_init_vector): Likewise.
	(reshape_init_class): Handle RAW_DATA_CST.
	(reshape_init_r): Likewise.

2024-12-06  Marek Polacek  <polacek@redhat.com>

	PR c++/117898
	* pt.cc (tsubst_pack_index): Detect indexing an empty pack.

2024-12-05  Jakub Jelinek  <jakub@redhat.com>

	PR c/41045
	* cp-tree.h (finish_asm_stmt): Add TOPLEV_P argument.
	* parser.cc (cp_parser_asm_definition): Parse also extended asm
	without clobbers/labels outside of functions.
	* semantics.cc (finish_asm_stmt): Add TOPLEV_P argument, if set,
	check extra restrictions for extended asm outside of functions.
	* pt.cc (tsubst_stmt): Adjust finish_asm_stmt caller.

2024-12-04  David Malcolm  <dmalcolm@redhat.com>

	PR c++/116771
	* parser.cc (cp_parser_name_lookup_error): Provide suggestions for
	the case of complete failure where there is no scope.

2024-12-04  Simon Martin  <simon@nasilyan.com>

	PR c++/117615
	* constexpr.cc (cxx_eval_constant_expression): Don't reject
	INTEGER_CSTs with type POINTER_TYPE to METHOD_TYPE.

2024-12-04  Jakub Jelinek  <jakub@redhat.com>

	PR c++/117826
	* cp-tree.h (struct decl_location_traits): New type.
	(erroneous_templates_t): Change using into typedef.
	(erroneous_templates): Add GTY((cache)).
	* error.cc (cp_adjust_diagnostic_info): Use
	hash_map_safe_get_or_insert<true> rather than
	hash_map_safe_get_or_insert<false> for erroneous_templates.

2024-12-03  Nina Ranns  <dinka.ranns@googlemail.com>

	PR c++/117579
	* parser.cc (cp_parser_statement): Replace assertion with a
	conditional check that the statement containing a contract assert
	is empty.

2024-12-02  Patrick Palka  <ppalka@redhat.com>

	* constraint.cc (resolve_concept_check): Remove.
	(deduce_constrained_parameter): Remove.
	(finish_type_constraints): Inline into its only caller
	cp_parser_placeholder_type_specifier and remove.
	(build_concept_check_arguments): Coding style tweaks.
	(build_standard_check): Inline into its only caller ...
	(build_concept_check): ... here.
	(build_type_constraint): Use the prototype parameter as the
	first template argument.
	(finish_shorthand_constraint): Remove function concept
	handling.  Use concept_prototype_parameter.
	(placeholder_extract_concept_and_args): Inline into its
	callers and remove.
	(equivalent_placeholder_constraints): Adjust after
	placeholder_extract_concept_and_args removal.
	(iterative_hash_placeholder_constraint): Likewise.
	* cp-objcp-common.cc (cp_common_init_ts): Remove WILDCARD_DECL
	handling.
	* cp-tree.def (WILDCARD_DECL): Remove.
	* cp-tree.h (WILDCARD_PACK_P): Remove.
	(type_uses_auto_or_concept): Remove declaration of nonexistent
	function.
	(append_type_to_template_for_access_check): Likewise.
	(finish_type_constraints): Remove declaration.
	(placeholder_extract_concept_and_args): Remove declaration.
	(deduce_constrained_parameter): Remove declaration.
	(resolve_constraint_check): Remove declaration.
	(valid_requirements_p): Remove declaration of nonexistent
	function.
	(finish_concept_name): Likewise.
	(concept_definition_p): Remove redundant overload.
	(concept_prototype_parameter): Define.
	* cxx-pretty-print.cc (pp_cxx_constrained_type_spec): Adjust
	after placeholder_extract_concept_and_args.
	* error.cc (dump_decl) <case WILDCARD_DECL>: Remove.
	(dump_expr) <case WILDCARD_DECL>: Likewise.
	* parser.cc (is_constrained_parameter): Inline into
	declares_constrained_type_template_parameter and remove.
	(cp_parser_check_constrained_type_parm): Declare static.
	(finish_constrained_template_template_parm): Remove.
	(cp_parser_constrained_template_template_parm): Remove.
	(finish_constrained_parameter): Remove dead code guarded by
	cp_parser_constrained_template_template_parm.
	(declares_constrained_type_template_parameter): Adjust after
	is_constrained_parameter removal.
	(declares_constrained_template_template_parameter): Remove.
	(cp_parser_placeholder_type_specifier): Adjust after
	finish_type_constraints removal.  Check the prototype parameter
	earlier, before build_type_constraint.
	Use concept_prototype_parameter.
	(cp_parser_parameter_declaration): Remove dead code guarded by
	declares_constrained_template_template_parameter.
	* pt.cc (convert_wildcard_argument): Remove.
	(convert_template_argument): Remove WILDCARD_DECL handling.
	(coerce_template_parameter_pack): Likewise.
	(tsubst) <case TEMPLATE_TYPE_PARM>: Likewise.
	(type_dependent_expression_p): Likewise.
	(make_constrained_placeholder_type): Remove function concept
	handling.
	(placeholder_type_constraint_dependent_p): Remove WILDCARD_DECL
	handling.

2024-11-30  Jakub Jelinek  <jakub@redhat.com>

	* parser.cc: Implement C++26 P3176R1 - The Oxford variadic comma.
	(cp_parser_parameter_declaration_clause): Emit
	-Wdeprecated-variadic-comma-omission warnings.

2024-11-29  Tejas Belagod  <tejas.belagod@arm.com>

	* decl.cc (reshape_init_array_1): Handle poly indices.

2024-11-28  Marek Polacek  <polacek@redhat.com>

	PR c++/113798
	* constexpr.cc (potential_constant_expression_1) <case PACK_INDEX_EXPR>:
	New case.
	* cp-objcp-common.cc (cp_common_init_ts): Mark PACK_INDEX_TYPE and
	PACK_INDEX_EXPR.
	* cp-tree.def (PACK_INDEX_TYPE): New.
	(PACK_INDEX_EXPR): New.
	* cp-tree.h (WILDCARD_TYPE_P): Also check PACK_INDEX_TYPE.
	(PACK_INDEX_CHECK): Define.
	(PACK_INDEX_P): Define.
	(PACK_INDEX_PACK): Define.
	(PACK_INDEX_INDEX): Define.
	(PACK_INDEX_PARENTHESIZED_P): Define.
	(make_pack_index): Declare.
	(pack_index_element): Declare.
	* cxx-pretty-print.cc (cxx_pretty_printer::expression) <case
	PACK_INDEX_EXPR>: New case.
	(cxx_pretty_printer::type_id) <case PACK_INDEX_TYPE>: New case.
	* error.cc (dump_type) <case PACK_INDEX_TYPE>: New case.
	(dump_type_prefix): Handle PACK_INDEX_TYPE.
	(dump_type_suffix): Likewise.
	(dump_expr) <case PACK_INDEX_EXPR>: New case.
	* mangle.cc (write_type) <case PACK_INDEX_TYPE>: New case.
	* module.cc (trees_out::type_node) <case PACK_INDEX_TYPE>: New case.
	(trees_in::tree_node) <case PACK_INDEX_TYPE>: New case.
	* parser.cc (cp_parser_next_tokens_are_pack_index_p): New.
	(cp_parser_pack_index): New.
	(cp_parser_primary_expression): Handle a C++26 pack-index-expression.
	(cp_parser_unqualified_id): Handle a C++26 pack-index-specifier.
	(cp_parser_nested_name_specifier_opt): See if a pack-index-specifier
	follows.
	(cp_parser_qualifying_entity): Handle a C++26 pack-index-specifier.
	(cp_parser_decltype_expr): Set id_expression_or_member_access_p for
	pack indexing.
	(cp_parser_mem_initializer_id): Handle a C++26 pack-index-specifier.
	(cp_parser_simple_type_specifier): Likewise.
	(cp_parser_base_specifier): Likewise.
	* pt.cc (iterative_hash_template_arg) <case PACK_INDEX_TYPE,
	PACK_INDEX_EXPR>: New case.
	(find_parameter_packs_r) <case PACK_INDEX_TYPE, PACK_INDEX_EXPR>: New
	case.
	(make_pack_index): New.
	(tsubst_pack_index): New.
	(tsubst): Avoid tsubst on PACK_INDEX_TYPE.
	<case TYPENAME_TYPE>: Add a call to error.
	<case PACK_INDEX_TYPE>: New case.
	(tsubst_expr) <case PACK_INDEX_EXPR>: New case.
	(dependent_type_p_r): Return true for PACK_INDEX_TYPE.
	(type_dependent_expression_p): Recurse on PACK_INDEX_PACK for
	PACK_INDEX_EXPR.
	* ptree.cc (cxx_print_type) <case PACK_INDEX_TYPE>: New case.
	* semantics.cc (finish_parenthesized_expr): Set
	PACK_INDEX_PARENTHESIZED_P for PACK_INDEX_EXPR.
	(finish_type_pack_element): Adjust error messages.
	(pack_index_element): New.
	* tree.cc (cp_tree_equal) <case PACK_INDEX_EXPR>: New case.
	(cp_walk_subtrees) <case PACK_INDEX_TYPE, PACK_INDEX_EXPR>: New case.
	* typeck.cc (structural_comptypes) <case PACK_INDEX_TYPE>: New case.

2024-11-28  Jakub Jelinek  <jakub@redhat.com>

	PR c++/78620
	PR c++/117256
	* init.cc (build_zero_init_1): Set CONSTRUCTOR_ZERO_PADDING_BITS.
	(build_value_init_noctor): Likewise.
	* constexpr.cc (cxx_eval_store_expression): Propagate
	CONSTRUCTOR_ZERO_PADDING_BITS flag.

2024-11-28  David Malcolm  <dmalcolm@redhat.com>

	PR c/82892
	* name-lookup.cc (suggest_alternatives_for_1): Provide hints for
	missing command-line options.

2024-11-28  David Malcolm  <dmalcolm@redhat.com>

	PR c++/87850
	* call.cc (convert_like_real): Call maybe_emit_indirection_note
	for "invalid conversion" diagnostic.
	* typeck.cc (compatible_types_for_indirection_note_p): New
	function.

2024-11-28  David Malcolm  <dmalcolm@redhat.com>

	PR c/104896
	* cvt.cc (maybe_warn_nodiscard): Replace "%<%s%>" with "%qs" in
	message wording.

2024-11-27  Jason Merrill  <jason@redhat.com>

	* module.cc (trees_out::core_bools): Check vague_linkage_p.
	(has_definition): Likewise.

2024-11-23  Lewis Hyatt  <lhyatt@gmail.com>

	* module.cc (bytes_out::loc): New function.
	(bytes_in::loc): New function.
	(struct span): Change int fields to location_diff_t.
	(range_t): Change from "unsigned int" to "line_map_uint_t".
	(struct ord_loc_info): Likewise.
	(struct macro_loc_info): Likewise.
	(class module_state): Likewise.
	(dumper::operator()): Add new code 'K' for dumping a location_t.
	(loc_spans::init): Use %K instead of %u for location_t dumps.
	(loc_spans::open): Likewise.
	(loc_spans::close): Likewise. Adjust bitwise expressions to support
	64-bit location_t as well.
	(struct module_state_config): Change ordinary_locs and macro_locs
	from "unsigned int" to "line_map_uint_t".  Reorder fields to improve
	packing.  Rather than changing the constructor initializer list to
	match the new order, switch to NSDMI instead.
	(module_state::note_location): Adjust to support 64-bit location_t.
	(module_state::write_location): Use %K instead of %u for location_t
	dumps. Use loc() instead of u() for streaming location_t.
	(module_state::read_location): Likewise.
	(module_state::write_ordinary_maps): Likewise.
	(module_state::write_macro_maps): Likewise.
	(module_state::write_config): Likewise.
	(module_state::read_config): Likewise.
	(module_state::write_prepare_maps): Use %K instead of %u for
	location_t dumps. Adjust variable types and bitwise expressions to
	support 64-bit location_t.
	(module_state::read_ordinary_maps): Likewise.
	(module_state::read_macro_maps): Likewise.
	(preprocess_module): Adjust data types to support 64-bit number of
	line maps.

2024-11-22  Andrew Pinski  <quic_apinski@quicinc.com>

	PR bootstrap/117737
	* call.cc (INCLUDE_MEMORY): Remove.
	* class.cc (INCLUDE_MEMORY): Remove.
	* constexpr.cc (INCLUDE_MEMORY): Remove.
	* constraint.cc (INCLUDE_MEMORY): Remove.
	* contracts.cc (INCLUDE_MEMORY): Remove.
	* coroutines.cc (INCLUDE_MEMORY): Remove.
	* cp-gimplify.cc (INCLUDE_MEMORY): Remove.
	* cp-lang.cc (INCLUDE_MEMORY): Remove.
	* cp-objcp-common.cc (INCLUDE_MEMORY): Remove.
	* cp-ubsan.cc (INCLUDE_MEMORY): Remove.
	* cvt.cc (INCLUDE_MEMORY): Remove.
	* cxx-pretty-print.cc (INCLUDE_MEMORY): Remove.
	* decl.cc (INCLUDE_MEMORY): Remove.
	* decl2.cc (INCLUDE_MEMORY): Remove.
	* dump.cc (INCLUDE_MEMORY): Remove.
	* error.cc (INCLUDE_MEMORY): Remove.
	* except.cc (INCLUDE_MEMORY): Remove.
	* expr.cc (INCLUDE_MEMORY): Remove.
	* friend.cc (INCLUDE_MEMORY): Remove.
	* init.cc (INCLUDE_MEMORY): Remove.
	* lambda.cc (INCLUDE_MEMORY): Remove.
	* lex.cc (INCLUDE_MEMORY): Remove.
	* logic.cc (INCLUDE_MEMORY): Remove.
	* mangle.cc (INCLUDE_MEMORY): Remove.
	* mapper-client.cc (INCLUDE_MEMORY): Remove.
	* mapper-resolver.cc (INCLUDE_MEMORY): Remove.
	* method.cc (INCLUDE_MEMORY): Remove.
	* module.cc (INCLUDE_MEMORY): Remove.
	* name-lookup.cc (INCLUDE_MEMORY): Remove.
	* optimize.cc (INCLUDE_MEMORY): Remove.
	* parser.cc (INCLUDE_MEMORY): Remove.
	* pt.cc (INCLUDE_MEMORY): Remove.
	* ptree.cc (INCLUDE_MEMORY): Remove.
	* rtti.cc (INCLUDE_MEMORY): Remove.
	* search.cc (INCLUDE_MEMORY): Remove.
	* semantics.cc (INCLUDE_MEMORY): Remove.
	* tree.cc (INCLUDE_MEMORY): Remove.
	* typeck.cc (INCLUDE_MEMORY): Remove.
	* typeck2.cc (INCLUDE_MEMORY): Remove.
	* vtable-class-hierarchy.cc (INCLUDE_MEMORY): Remove.

2024-11-22  Tobias Burnus  <tburnus@baylibre.com>

	* parser.cc (cp_parser_omp_clause_name, cp_parser_omp_all_clauses,
	cp_parser_omp_dispatch_body): Handle 'interop' clause.
	* pt.cc (tsubst_omp_clauses): Likewise.
	* semantics.cc (finish_omp_clauses): Likewise.

2024-11-22  Tobias Burnus  <tburnus@baylibre.com>

	* parser.cc (INCLUDE_STRING): Define.
	(cp_parser_omp_clause_name): Handle init, use, and destroy clauses.
	(cp_parser_omp_all_clauses): Likewise; use C_ORT_OMP_INTEROP, if
	'use' is permitted, for c_finish_omp_clauses.
	(cp_parser_omp_modifier_prefer_type, cp_parser_omp_clause_init,
	OMP_INTEROP_CLAUSE_MASK, cp_parser_omp_interop): New.
	(cp_parser_pragma): Handle 'interop' directive.
	* pt.cc (tsubst_omp_clauses): Handle init, use, and destroy clauses.
	(tsubst_stmt): Handle OMP_INTEROP.
	* semantics.cc (cp_omp_init_prefer_type_update): New.
	(finish_omp_clauses): Handle  init, use, and destroy clauses
	and add clause check for 'depend' on 'interop'.

2024-11-21  Jason Merrill  <jason@redhat.com>

	* module.cc (has_definition): Also true for inline vars.

2024-11-21  Jason Merrill  <jason@redhat.com>

	* module.cc (trees_in::core_vals) [STATEMENT_LIST]: Skip
	DEBUG_BEGIN_STMT if !MAY_HAVE_DEBUG_MARKER_STMTS.

2024-11-21  Jason Merrill  <jason@redhat.com>

	* name-lookup.cc (lookup_imported_hidden_friend): Call
	lazy_load_pendings.

2024-11-20  Paul-Antoine Arras  <parras@baylibre.com>

	* decl.cc (omp_declare_variant_finalize_one): Set adjust_args
	need_device_ptr attribute.
	* parser.cc (cp_parser_direct_declarator): Update call to
	cp_parser_late_return_type_opt.
	(cp_parser_late_return_type_opt): Add 'tree parms' parameter. Update
	call to cp_parser_late_parsing_omp_declare_simd.
	(cp_parser_omp_clause_name): Handle nocontext and novariants clauses.
	(cp_parser_omp_clause_novariants): New function.
	(cp_parser_omp_clause_nocontext): Likewise.
	(cp_parser_omp_all_clauses): Handle PRAGMA_OMP_CLAUSE_NOVARIANTS and
	PRAGMA_OMP_CLAUSE_NOCONTEXT.
	(cp_parser_omp_dispatch_body): New function, inspired from
	cp_parser_assignment_expression and cp_parser_postfix_expression.
	(OMP_DISPATCH_CLAUSE_MASK): Define.
	(cp_parser_omp_dispatch): New function.
	(cp_finish_omp_declare_variant): Add parameter. Handle adjust_args
	clause.
	(cp_parser_late_parsing_omp_declare_simd): Add parameter. Update calls
	to cp_finish_omp_declare_variant and cp_finish_omp_declare_variant.
	(cp_parser_omp_construct): Handle PRAGMA_OMP_DISPATCH.
	(cp_parser_pragma): Likewise.
	* semantics.cc (finish_omp_clauses): Handle OMP_CLAUSE_NOCONTEXT and
	OMP_CLAUSE_NOVARIANTS.
	* pt.cc (tsubst_omp_clauses): Handle OMP_CLAUSE_NOCONTEXT and
	OMP_CLAUSE_NOVARIANTS.
	(tsubst_stmt): Handle OMP_DISPATCH.
	(tsubst_expr): Handle IFN_GOMP_DISPATCH.

2024-11-19  Jason Merrill  <jason@redhat.com>

	* decl2.cc (cp_handle_deprecated_or_unavailable): Avoid redundant
	warning.
	* call.cc (build_over_call): Set TREE_NO_WARNING for calls
	to deprecated functions.
	* semantics.cc (finish_call_expr): Propagate TREE_NO_WARNING.

2024-11-17  Jason Merrill  <jason@redhat.com>

	* module.cc (module_preprocess_options): Set directives_only here.

2024-11-17  Jason Merrill  <jason@redhat.com>

	* module.cc (module_preprocess_options): Don't override it.

2024-11-16  Jan Hubicka  <hubicka@ucw.cz>

	* decl.cc (cxx_build_operator_new): Break out from ...
	(cxx_build_operator_delete): Break out from ...
	(cxx_init_operator_new_delete_decls): Break out from ...
	(cxx_init_decl_processing): ... here.

2024-11-14  Jason Merrill  <jason@redhat.com>

	* name-lookup.cc (do_namespace_alias): set_originating_module after
	pushdecl.

2024-11-14  Jason Merrill  <jason@redhat.com>

	* module.cc (module_state_config::get_dialect): Expect coroutines in
	C++20.

2024-11-11  Jason Merrill  <jason@redhat.com>

	* Make-lang.in: Also collect tags from libcody and c++tools.

2024-11-11  Jason Merrill  <jason@redhat.com>

	* lang-specs.h: Check fmodules* instead of fmodules-ts.

2024-11-11  Simon Martin  <simon@nasilyan.com>

	PR c++/117463
	* constexpr.cc (cxx_placement_new_fn): Implement in terms of
	std_placement_new_fn_p.
	* cp-tree.h (std_placement_new_fn_p): Declare.
	* init.cc (std_placement_new_fn_p): Add missing checks to ensure
	that fndecl is a non-replaceable ::operator new.

2024-11-11  Jakub Jelinek  <jakub@redhat.com>

	* parser.cc (cp_parser_postfix_expression): Handle
	RID_BUILTIN_OPERATOR_NEW and RID_BUILTIN_OPERATOR_DELETE.
	* cp-objcp-common.cc (names_builtin_p): Change return type from
	bool to int, adjust return statments.  Handle
	RID_BUILTIN_OPERATOR_NEW and RID_BUILTIN_OPERATOR_DELETE.
	* pt.cc (tsubst_expr) <case CALL_EXPR>: Handle
	CALL_FROM_NEW_OR_DELETE_P.

2024-11-11  Jason Merrill  <jason@redhat.com>

	* cp-tree.h (struct ptrmem_cst): Change tree_common to tree_typed.
	(struct tree_trait_expr): Likewise.
	(struct tree_static_assert): Change tree_common to tree_base.
	(struct tree_argument_pack_select): Likewise.

2024-11-10  Lewis Hyatt  <lhyatt@gmail.com>

	* cp-objcp-common.cc (cp_common_init_ts): Change TRAIT_EXPR from
	TS_EXP to TS_TYPED.

2024-11-08  Jakub Jelinek  <jakub@redhat.com>

	PR c++/117317
	* semantics.cc (emit_associated_thunks): Do nothing for
	!DECL_INTERFACE_KNOWN && DECL_DEFER_OUTPUT fns.

2024-11-05  Jason Merrill  <jason@redhat.com>

	PR c++/116634
	* init.cc (can_init_array_with_p): Allow PR59465 case with
	permerror.

2024-11-05  Simon Martin  <simon@nasilyan.com>

	PR c++/117099
	PR c++/117129
	* typeck.cc (check_return_expr): Upon error, set
	current_function_return_value to error_mark_node.

2024-11-05  Simon Martin  <simon@nasilyan.com>

	PR c++/117101
	* init.cc (std_placement_new_fn_p): Check first_arg against
	NULL_TREE.

2024-11-05  Simon Martin  <simon@nasilyan.com>

	PR c++/117158
	* typeck.cc (cp_build_array_ref): Only wrap array expression
	into a SAVE_EXPR at template instantiation time.

2024-11-05  Jakub Jelinek  <jakub@redhat.com>

	PR c++/117370
	* cp-tree.h (is_std_class): Declare.
	* constexpr.cc (is_std_class): New function.
	(is_std_allocator): Use it.
	* decl.cc (grok_op_properties): Mark global replaceable
	operator new/delete operators with const std::nothrow_t & last
	argument with DECL_IS_REPLACEABLE_OPERATOR.

2024-11-05  Nathaniel Shead  <nathanieloshead@gmail.com>

	PR c++/99274
	* module.cc (trees_in::is_matching_decl): Merge default
	arguments.
	* tree.cc (cp_tree_equal) <AGGR_INIT_EXPR>: Handle unification
	of AGGR_INIT_EXPRs with new VAR_DECL slots.

2024-11-05  Nathaniel Shead  <nathanieloshead@gmail.com>

	PR c++/105443
	* module.cc (loc_spans::locs_exhausted_p): New field.
	(loc_spans::loc_spans): Initialise it.
	(loc_spans::locations_exhausted_p): New function.
	(module_state::read_prepare_maps): Move inform into...
	(loc_spans::report_location_exhaustion): ...this new function.
	(module_state::write_location): Check for writing module
	locations stored due to resource exhaustion.

2024-11-02  Nathaniel Shead  <nathanieloshead@gmail.com>
	    Jason Merrill  <jason@redhat.com>

	PR c++/113814
	* pt.cc (add_mergeable_specialization): Propagate
	TYPE_CANONICAL.

2024-11-02  Nathaniel Shead  <nathanieloshead@gmail.com>

	PR c++/116317
	* module.cc
	(depset::DB_MAYBE_RECURSIVE_BIT): New flag.
	(depset::DB_ENTRY_BIT): New flag.
	(depset::is_maybe_recursive): New accessor.
	(depset::is_entry): New accessor.
	(depset::hash::writing_merge_key): New field.
	(trees_out::decl_value): Inform dep_hash while we're writing the
	merge key information for a decl.
	(depset::hash::add_dependency): Find recursive deps and mark the
	entry point.
	(sort_cluster): Ensure that the entry dep is streamed first.

2024-11-01  David Malcolm  <dmalcolm@redhat.com>

	PR bootstrap/117361
	* Make-lang.in (s-selftest-c++): Use GCC_FOR_SELFTESTS.
	(selftest-c++-gdb): Likewise.
	(selftest-c++-valgrind): Likewise.

2024-11-01  Jakub Jelinek  <jakub@redhat.com>

	* pt.cc (tsubst_attribute): For "omp declare variant base" attribute
	if varid is error_mark_node, set val to error_mark_node rather than
	creating a TREE_LIST with error_mark_node TREE_PURPOSE.

2024-10-31  Tobias Burnus  <tburnus@baylibre.com>

	* decl.cc (omp_declare_variant_finalize_one): Use STRIP_REFERENCE_REF
	instead of doing it manually.

2024-10-31  Tobias Burnus  <tburnus@baylibre.com>

	* decl.cc (omp_declare_variant_finalize_one): Strip indirect ref
	around variant-function call when processing a variant.

2024-10-30  Iain Sandoe  <iain@sandoe.co.uk>

	PR c++/116607
	* contracts.cc (has_active_contract_condition): Use the
	CONTRACT_CHAIN macro to advance through the attribute list.

2024-10-29  David Malcolm  <dmalcolm@redhat.com>

	PR other/116613
	* error.cc (cxx_initialize_diagnostics): Use unique_ptr for
	pretty_printer.  Use context->set_format_decoder.
	* module.cc (noisy_p): Update for global_dc's m_printer becoming
	reference printer.

2024-10-29  Jason Merrill  <jason@redhat.com>

	PR c++/30854
	PR c++/116634
	* error.cc (dump_aggr_init_expr_args): Remove.
	(dump_call_expr_args): Handle AGGR_INIT_EXPR.
	(dump_expr): Combine AGGR_INIT_EXPR and CALL_EXPR cases.

2024-10-25  Jakub Jelinek  <jakub@redhat.com>

	* vtable-class-hierarchy.cc: Remove trailing whitespace.
	* typeck2.cc: Likewise.
	* decl.cc: Likewise.
	* init.cc: Likewise.
	* semantics.cc: Likewise.
	* module.cc: Likewise.
	* rtti.cc: Likewise.
	* cxx-pretty-print.cc: Likewise.
	* cvt.cc: Likewise.
	* mangle.cc: Likewise.
	* name-lookup.h: Likewise.
	* coroutines.cc: Likewise.
	* error.cc: Likewise.
	* lambda.cc: Likewise.
	* tree.cc: Likewise.
	* g++spec.cc: Likewise.
	* decl2.cc: Likewise.
	* cp-tree.h: Likewise.
	* parser.cc: Likewise.
	* pt.cc: Likewise.
	* call.cc: Likewise.
	* lex.cc: Likewise.
	* cp-lang.cc: Likewise.
	* cp-tree.def: Likewise.
	* constexpr.cc: Likewise.
	* typeck.cc: Likewise.
	* name-lookup.cc: Likewise.
	* optimize.cc: Likewise.
	* search.cc: Likewise.
	* mapper-client.cc: Likewise.
	* ptree.cc: Likewise.
	* class.cc: Likewise.

2024-10-24  Nathaniel Shead  <nathanieloshead@gmail.com>

	* module.cc (trees_in::read_class_def): Propagate some missing
	flags from the streamed-in definition.

2024-10-24  Nathaniel Shead  <nathanieloshead@gmail.com>

	* module.cc (post_load_processing): Mark COMDAT as needed, emit
	declarations if maybe_clone_body fails.

2024-10-24  Nathaniel Shead  <nathanieloshead@gmail.com>

	PR c++/115007
	* module.cc (module_state::read_cluster): Replace
	DECL_ABSTRACT_P with DECL_MAYBE_IN_CHARGE_CDTOR_P.
	(post_load_processing): Check and mark TREE_ASM_WRITTEN.
	* semantics.cc (expand_or_defer_fn_1): Use the more specific
	module_maybe_has_cmi_p instead of modules_p.

2024-10-24  Nathaniel Shead  <nathanieloshead@gmail.com>

	* decl2.cc (import_export_class): Use TYPE_CONTAINS_VPTR_P
	instead of TYPE_POLYMORPHIC_P.
	(import_export_decl): Likewise.

2024-10-24  David Malcolm  <dmalcolm@redhat.com>
	    Gaius Mulley  <gaiusmod2@gmail.com>

	PR other/116613
	* call.cc: Add #define INCLUDE_MEMORY.
	* class.cc: Likewise.
	* constexpr.cc: Likewise.
	* constraint.cc: Likewise.
	* contracts.cc: Likewise.
	* coroutines.cc: Likewise.
	* cp-gimplify.cc: Likewise.
	* cp-lang.cc: Likewise.
	* cp-objcp-common.cc: Likewise.
	* cp-ubsan.cc: Likewise.
	* cvt.cc: Likewise.
	* cxx-pretty-print.cc: Likewise.  Add #include "cp-tree.h".
	(cxx_pretty_printer::clone): Use std::unique_ptr and
	::make_unique.
	* cxx-pretty-print.h (cxx_pretty_printer::clone): Use
	std::unique_ptr.
	* decl2.cc: Add #define INCLUDE_MEMORY.
	* dump.cc: Likewise.
	* except.cc: Likewise.
	* expr.cc: Likewise.
	* friend.cc: Likewise.
	* init.cc: Likewise.
	* lambda.cc: Likewise.
	* logic.cc: Likewise.
	* mangle.cc: Likewise.
	* method.cc: Likewise.
	* optimize.cc: Likewise.
	* pt.cc: Likewise.
	* ptree.cc: Likewise.
	* rtti.cc: Likewise.
	* search.cc: Likewise.
	* semantics.cc: Likewise.
	* tree.cc: Likewise.
	* typeck.cc: Likewise.
	* typeck2.cc: Likewise.
	* vtable-class-hierarchy.cc: Likewise.

2024-10-24  Jakub Jelinek  <jakub@redhat.com>

	PR c++/117259
	* typeck.cc (get_member_function_from_ptrfunc): Use force_target_expr
	rather than save_expr for instance_ptr and function.  Don't call it
	for TREE_CONSTANT.

2024-10-22  Jason Merrill  <jason@redhat.com>

	PR c++/117107
	PR c++/92687
	* decl.cc (lookup_decomp_type): Handle null table.

2024-10-22  Patrick Palka  <ppalka@redhat.com>

	* pt.cc (register_specialization): Set elt.hash.

2024-10-22  Nathaniel Shead  <nathanieloshead@gmail.com>

	* module.cc (depset::DB_IS_MEMBER_BIT): Rename to...
	(depset::DB_IS_PENDING_BIT): ...this.
	(depset::is_member): Remove.
	(depset::is_pending_entity): New function.
	(depset::hash::make_dependency): Mark definitions of
	namespace-scope types as maybe-pending entities.
	(depset::hash::add_class_entities): Rename DB_IS_MEMBER_BIT to
	DB_IS_PENDING_BIT.
	(depset::hash::find_dependencies): Use is_pending_entity
	instead of is_member.
	(module_state::write_pendings): Likewise; adjust comment.

2024-10-18  Alejandro Colomar  <alx@kernel.org>

	* cp-tree.h (array_type_nelts_top)
	* tree.cc (array_type_nelts_top):
	Remove function (move to gcc/).

2024-10-18  Alejandro Colomar  <alx@kernel.org>

	* decl.cc (reshape_init_array)
	* init.cc
	(build_zero_init_1)
	(build_value_init_noctor)
	(build_vec_init)
	(build_delete)
	* lambda.cc (add_capture)
	* tree.cc (array_type_nelts_top):
	Rename array_type_nelts => array_type_nelts_minus_one

2024-10-16  Jakub Jelinek  <jakub@redhat.com>

	* search.cc (lookup_member): ?: operator formatting fixes.
	* typeck.cc (cp_build_modify_expr): Likewise.

2024-10-15  Jakub Jelinek  <jakub@redhat.com>

	PR c/117022
	* semantics.cc (begin_while_stmt, begin_do_stmt, begin_for_stmt,
	finish_break_stmt, finish_continue_stmt, begin_switch_stmt): Pass
	another NULL_TREE to build_stmt calls.

2024-10-15  Patrick Palka  <ppalka@redhat.com>

	PR c++/116710
	* pt.cc (unify) <case REFERENCE_TYPE>: Compare rvalueness.

2024-10-15  Patrick Palka  <ppalka@redhat.com>

	PR c++/117054
	* pt.cc (extract_locals_r): Disable tree_extra_args assert
	for LAMBDA_EXPR.

2024-10-14  Jason Merrill  <jason@redhat.com>

	* cp-tree.h (most_constrained_function): Declare..
	* class.cc (resolve_address_of_overloaded_function): Call it.
	* pt.cc (get_template_for_ordering): Handle list from
	resolve_address_of_overloaded_function.
	(most_constrained_function): No longer static.
	(resolve_overloaded_unification): Always compare type rather
	than decl.

2024-10-13  Simon Martin  <simon@nasilyan.com>

	Revert:
	2024-10-12  Simon Martin  <simon@nasilyan.com>

	PR c++/109918
	* class.cc (warn_hidden): Keep track of overloaded and of hidden
	base methods. Mention the actual hiding function in the warning,
	not the first overload.
	* error.cc (location_of): Skip over conv_op_marker.

2024-10-12  Simon Martin  <simon@nasilyan.com>

	PR c++/109918
	* class.cc (warn_hidden): Keep track of overloaded and of hidden
	base methods. Mention the actual hiding function in the warning,
	not the first overload.
	* error.cc (location_of): Skip over conv_op_marker.

2024-10-07  Jason Merrill  <jason@redhat.com>

	* decl.cc (duplicate_decls): Only check PURVIEW_P if
	DECL_LANG_SPECIFIC.

2024-10-07  Jason Merrill  <jason@redhat.com>

	* decl2.cc (mark_used): Always check require_deduced_type.

2024-10-07  Jason Merrill  <jason@redhat.com>

	* module.cc (init_modules): Don't warn about -M.

2024-10-04  Nathaniel Shead  <nathanieloshead@gmail.com>

	PR c++/113266
	PR c++/116911
	* parser.cc (cp_parser_template_argument): Allow
	internal-linkage variables since C++11.

2024-10-04  Nathaniel Shead  <nathanieloshead@gmail.com>

	PR c++/116913
	* name-lookup.cc (update_binding): Return the strip_using'd old
	decl rather than the binding.

2024-10-04  Jason Merrill  <jason@redhat.com>
	    Richard Biener  <rguenther@suse.de>

	* cp-tree.h (spec_entry::hash): New member.
	* pt.cc (spec_hasher::hash): Set it and return it.
	(maybe_process_partial_specialization): Clear it when
	changing tmpl/args.
	(lookup_template_class): Likewise, don't pass hash to find.
	(retrieve_specialization): Set it, don't pass hash to find.
	(register_specialization): Don't pass hash to find.
	(reregister_specialization): Likewise.
	(match_mergeable_specialization): Likewise.
	(add_mergeable_specialization): Likewise.

2024-10-03  Jason Merrill  <jason@redhat.com>
	    Richard Biener  <rguenther@suse.de>

	* pt.cc (coerce_template_parms): Free garbage vecs.

2024-10-03  Jason Merrill  <jason@redhat.com>

	Revert:
	2024-10-03  Jason Merrill  <jason@redhat.com>
		    Richard Biener   <rguenther@suse.de>

	* pt.cc (struct free_if_changed_proxy): New.
	(coerce_template_parms): Use it.

2024-10-03  Jason Merrill  <jason@redhat.com>

	* parser.cc (location_between): New.
	(cp_parser_operator): Handle -Wdeprecated-literal-operator.

2024-10-03  Jason Merrill  <jason@redhat.com>
	    Richard Biener   <rguenther@suse.de>

	* pt.cc (struct free_if_changed_proxy): New.
	(coerce_template_parms): Use it.

2024-10-02  Simon Martin  <simon@nasilyan.com>

	PR c++/116722
	* constexpr.cc (cxx_bind_parameters_in_call): When !ctx->quiet,
	emit error before bailing out due to a call to {con,de}structor
	for a class with virtual bases.

2024-10-02  Richard Biener  <rguenther@suse.de>

	* pt.cc (iterative_hash_template_arg): Use iterative_hash_hashval_t
	to hash TYPE_HASH.

2024-10-02  Richard Biener  <rguenther@suse.de>

	* pt.cc (iterative_hash_template_arg): Avoid using
	iterative_hash_object.

2024-10-01  Giuseppe D'Angelo  <giuseppe.dangelo@kdab.com>

	* constraint.cc (diagnose_trait_expr): New diagnostic.
	* cp-trait.def (IS_VIRTUAL_BASE_OF): New builtin.
	* cp-tree.h (enum base_access_flags): Add a new flag to be
	able to request a search for a virtual base class.
	* cxx-pretty-print.cc (pp_cxx_userdef_literal): Update the
	list of GNU extensions to the grammar.
	* search.cc (struct lookup_base_data_s): Add a field to
	request searching for a virtual base class.
	(dfs_lookup_base): Add the ability to look for a virtual
	base class.
	(lookup_base): Forward the flag to dfs_lookup_base.
	* semantics.cc (trait_expr_value): Implement the builtin
	by calling lookup_base with the new flag.
	(finish_trait_expr): Handle the new builtin.

2024-09-30  Marek Polacek  <polacek@redhat.com>

	PR c++/109859
	* parser.cc (cp_parser_lambda_declarator_opt): Temporarily clear
	local_variables_forbidden_p.
	(cp_parser_placeholder_type_specifier): Turn an assert into an
	error.

2024-09-30  David Malcolm  <dmalcolm@redhat.com>

	PR other/116613
	* pt.cc: Include "pretty-print-markup.h".
	(warn_spec_missing_attributes): Defer colorization choices by
	replacing printing to a pretty_printer * param with appending
	to a vec of strings.  Replace pretty_printer with usage of
	pp_markup::comma_separated_quoted_strings and "%e".

2024-09-27  Nathaniel Shead  <nathanieloshead@gmail.com>

	PR c++/116160
	* name-lookup.cc (supplement_binding): Allow redeclaration via
	USING_DECL if not in class scope.
	(do_nonmember_using_decl): Remove function-scope exemption.
	(push_using_decl_bindings): Remove outdated comment.

2024-09-27  Nathaniel Shead  <nathanieloshead@gmail.com>

	PR c++/116748
	* name-lookup.cc (update_binding): Maintain USING_DECLs in the
	binding slots.

2024-09-27  Nathaniel Shead  <nathanieloshead@gmail.com>

	PR c++/116803
	* decl.cc (duplicate_decls): Propagate DECL_MODULE_PURVIEW_P and
	DECL_MODULE_IMPORT_P for template redeclarations.

2024-09-27  Marek Polacek  <polacek@redhat.com>

	PR c++/102594
	* init.cc (build_vec_init): Build up a CONSTRUCTOR to signal
	direct-initialization rather than a TREE_LIST.

2024-09-27  Arsen Arsenović  <arsen@aarsen.me>

	PR c++/116793
	* coroutines.cc (await_statement_expander): Just process
	subtrees if encountering a CLEANUP_POINT_EXPR.

2024-09-27  Arsen Arsenović  <arsen@aarsen.me>

	* coroutines.cc (co_await_get_resume_call): Return a tree
	directly, rather than a tree pointer.
	* cp-tree.h (co_await_get_resume_call): Adjust signature
	accordingly.
	* cvt.cc (convert_to_void): Do not alter CO_AWAIT_EXPRs when
	discarding them.  Simplify handling implicit INDIRECT_REFs.

2024-09-27  Arsen Arsenović  <arsen@aarsen.me>

	PR c++/116502
	* coroutines.cc (maybe_promote_temps): Convert temporary
	initializers to void without complaining.

2024-09-27  Nathaniel Shead  <nathanieloshead@gmail.com>

	* module.cc (has_definition): Use decl_maybe_constant_var
	instead of TREE_CONSTANT.

2024-09-27  Nathaniel Shead  <nathanieloshead@gmail.com>

	* name-lookup.cc (check_can_export_using_decl): Handle internal
	linkage GM entities (but ignore in header units); use linkage
	of entity ultimately referred to by aliases.

2024-09-27  Nathaniel Shead  <nathanieloshead@gmail.com>

	* name-lookup.cc (maybe_record_mergeable_decl): Use decl_linkage
	instead of ad-hoc checks.

2024-09-27  Nathaniel Shead  <nathanieloshead@gmail.com>

	* name-lookup.cc (do_namespace_alias): Propagate TREE_PUBLIC for
	namespace aliases.
	* tree.cc (decl_linkage): Update rules for C++11.

2024-09-26  Marek Polacek  <polacek@redhat.com>

	PR c++/116731
	* parser.cc (warn_for_range_copy): Check if TYPE is trivially
	constructible, not copyable.

2024-09-25  Marek Polacek  <polacek@redhat.com>

	* coroutines.cc (build_co_await): Use TARGET_EXPR accessors.
	(finish_co_yield_expr): Likewise.
	(register_awaits): Likewise.
	(tmp_target_expr_p): Likewise.
	(flatten_await_stmt): Likewise.
	* error.cc (dump_expr): Likewise.
	* semantics.cc (finish_omp_target_clauses): Likewise.
	* tree.cc (bot_manip): Likewise.
	(cp_tree_equal): Likewise.
	* typeck.cc (cxx_mark_addressable): Likewise.
	(cp_build_compound_expr): Likewise.
	(cp_build_modify_expr): Likewise.
	(check_return_expr): Likewise.

2024-09-25  Tobias Burnus  <tburnus@baylibre.com>

	* parser.cc (cp_parser_omp_declare_target): Set target-used bit
	in omp_requires_mask.

2024-09-24  Jakub Jelinek  <jakub@redhat.com>

	PR c++/107637
	* cp-tree.h: Implement C++23 P2718R0 - Wording for P2644R1 Fix for
	Range-based for Loop.
	(cp_convert_omp_range_for): Add bool tmpl_p argument.
	(find_range_for_decls): Declare.
	* parser.cc (cp_convert_range_for): For flag_range_for_ext_temps call
	push_stmt_list () before cp_finish_decl for range_temp and save it
	temporarily to FOR_INIT_STMT.
	(cp_convert_omp_range_for): Add tmpl_p argument.  If set, remember
	DECL_NAME of range_temp and for cp_finish_decl call restore it before
	clearing it again, if unset, don't adjust DECL_NAME of range_temp at
	all.
	(cp_parser_omp_loop_nest): For flag_range_for_ext_temps range for add
	CLEANUP_POINT_EXPR around sl.  Call find_range_for_decls and adjust
	DECL_NAMEs for range fors if not processing_template_decl.  Adjust
	cp_convert_omp_range_for caller.  Remove superfluous backslash at the
	end of line.
	* decl.cc (initialize_local_var): For flag_range_for_ext_temps
	temporarily clear stmts_are_full_exprs_p rather than set for
	for_range__identifier decls.
	* call.cc (extend_ref_init_temps): For flag_range_for_ext_temps return
	init early for for_range__identifier decls.
	* semantics.cc (find_range_for_decls): New function.
	(finish_for_stmt): Use it.  For flag_range_for_ext_temps if
	cp_convert_range_for set FOR_INIT_STMT, pop_stmt_list it and wrap
	into CLEANUP_POINT_EXPR.
	* pt.cc (tsubst_omp_for_iterator): Adjust tsubst_omp_for_iterator
	caller.
	(tsubst_stmt) <case OMP_FOR>: For flag_range_for_ext_temps if there
	are any range fors in the loop nest, add push_stmt_list starting
	before the initializations, pop_stmt_list it after the body and wrap
	into CLEANUP_POINT_EXPR.  Change DECL_NAME of range for temps from
	NULL to for_range_identifier.

2024-09-24  Nina Dinka Ranns  <dinka.ranns@googlemail.com>

	PR c++/116490
	* contracts.cc (build_contract_condition_function): added
	a check for comdat group of the guarded function. If set,
	the condition check function is added to the same comdat
	group.

2024-09-24  Tobias Burnus  <tburnus@baylibre.com>

	* parser.cc (cp_parser_omp_requires): Handle self_maps clause.

2024-09-23  Marek Polacek  <polacek@redhat.com>

	PR c++/116798
	* parser.cc (cp_parser_parameter_declaration): Detect an explicit
	object parameter in a requires expression.

2024-09-23  Simon Martin  <simon@nasilyan.com>

	PR c++/109790
	PR c++/100632
	* mangle.cc (write_member_name): Handle members whose type is an
	anonymous union member. Write missing "on" marker for operators
	when ABI version is at least 16.

2024-09-23  Simon Martin  <simon@nasilyan.com>

	PR c++/116722
	* constexpr.cc (cxx_bind_parameters_in_call): Leave early for
	{con,de}structors of classes with virtual bases.

2024-09-20  David Malcolm  <dmalcolm@redhat.com>

	PR other/116613
	* cp-tree.h (cxx_print_error_function): Convert first param
	from diagnostic_context * to diagnostic_text_output_format &.
	* error.cc: Include "diagnostic-format-text.h".
	(cxx_initialize_diagnostics): Update for renamings.
	(cxx_print_error_function): Convert first param from
	diagnostic_context * to diagnostic_text_output_format & and update
	accordingly
	(cp_diagnostic_starter): Rename to...
	(cp_diagnostic_text_starter): ...this.  Convert first
	param from diagnostic_context * to diagnostic_text_output_format &
	and update accordingly.
	(cp_print_error_function): Likewise.
	(print_instantiation_full_context): Likewise.
	(print_instantiation_partial_context_line): Likewise.
	(print_instantiation_partial_context): Likewise.
	(maybe_print_instantiation_context): Likewise.
	(maybe_print_constexpr_context): Likewise.
	(print_location): Likewise.
	(print_constrained_decl_info): Likewise.
	(print_concept_check_info): Likewise.
	(print_constraint_context_head): Likewise.
	(print_requires_expression_info): Likewise.
	(maybe_print_single_constraint_context): Likewise.

2024-09-20  Patrick Palka  <ppalka@redhat.com>

	DR 2789
	* call.cc (cand_parms_match): Check for matching class contexts
	even in the reversed case.

2024-09-20  Patrick Palka  <ppalka@redhat.com>

	PR c++/116492
	DR 2789
	* call.cc (object_parms_correspond): Remove.
	(cand_parms_match): Return false for member functions that come
	from different classes.  Adjust call to object_parms_correspond.
	(joust): Update comment for the non-template "more constrained"
	case.

2024-09-20  Patrick Palka  <ppalka@redhat.com>

	DR 2273
	* call.cc (joust): Restrict inheritedness tiebreaker to
	constructors.

2024-09-20  Iain Sandoe  <iain@sandoe.co.uk>

	* coroutines.cc (coro_build_artificial_var_with_dve): New.
	(coro_build_and_push_artificial_var): New.
	(coro_build_and_push_artificial_var_with_dve): New.
	(analyze_fn_parms): Ensure that frame entries cannot clash
	with local variables.
	(build_coroutine_frame_delete_expr): Amend comment.
	(cp_coroutine_transform::build_ramp_function): Rework to
	avoid manual management of variables and scopes.

2024-09-19  Marek Polacek  <polacek@redhat.com>

	PR c++/116162
	* class.cc (check_bases_and_members): Don't set DECL_DELETED_FN here,
	leave it to defaulted_late_check.
	* cp-tree.h (maybe_delete_defaulted_fn): Declare.
	(defaulted_late_check): Add a tristate parameter.
	* method.cc (maybe_delete_defaulted_fn): New.
	(defaulted_late_check): Add a tristate parameter.  Call
	maybe_delete_defaulted_fn instead of giving an error.

2024-09-18  Patrick Palka  <ppalka@redhat.com>

	PR c++/116714
	PR c++/107390
	* pt.cc (dependent_opaque_alias_p): Also return true for a
	decltype(lambda) alias.

2024-09-18  Jason Merrill  <jason@redhat.com>

	* call.cc (do_warn_dangling_reference): Return temporary
	instead of the call it's passed to.
	(maybe_warn_dangling_reference): Adjust diagnostic.

2024-09-18  Jason Merrill  <jason@redhat.com>

	PR c++/115361
	* call.cc (do_warn_dangling_reference): Check is_empty_class.

2024-09-17  Marek Polacek  <polacek@redhat.com>

	PR c++/116741
	* constexpr.cc (cxx_eval_constant_expression) <case CONVERT_EXPR>: If
	the result of build_fold_indirect_ref is a COMPONENT_REF, use its op1.
	Check DECL_P before calling inform.

2024-09-17  Marek Polacek  <polacek@redhat.com>

	PR c++/116676
	* constexpr.cc (maybe_warn_about_constant_value): Check DECL_NAME.

2024-09-15  Jason Merrill  <jason@redhat.com>

	* parser.cc (cp_parser_unary_expression) [RID_EXTENSION]: Also
	suppress -Wconditionally-supported.

2024-09-15  Jason Merrill  <jason@redhat.com>

	* call.cc (convert_like_internal) [ck_user]: Use iloc_sentinel.

2024-09-15  Iain Sandoe  <iain@sandoe.co.uk>

	PR c++/115905
	* coroutines.cc (struct coro_aw_data): Add a member for the
	restart dispatch label.
	(expand_one_await_expression): Rework to modernise and to
	handle the boolean await_suspend() case.
	(build_actor_fn): Rework the dispatcher and allow for a jump
	back to the dispatcher.

2024-09-14  Jason Merrill  <jason@redhat.com>

	* tree.cc (handle_init_priority_attribute): Check
	in_system_header_at.

2024-09-14  Simon Martin  <simon@nasilyan.com>

	PR c++/116681
	* name-lookup.cc (qualified_namespace_lookup): Use an
	auto_cond_timer instead of using timevar_start and timevar_stop.

2024-09-13  Jason Merrill  <jason@redhat.com>

	PR c++/116696
	* constexpr.cc (explain_invalid_constexpr_fn): When
	-fimplicit-constexpr, also explain inline functions, and point out
	non-inline functions.

2024-09-13  Jakub Jelinek  <jakub@redhat.com>

	PR c++/116678
	* optimize.cc: Include decl.h.
	(maybe_thunk_body): Temporarily change deprecated_state to
	UNAVAILABLE_DEPRECATED_SUPPRESS.

2024-09-12  Jonathan Wakely  <jwakely@redhat.com>

	PR c++/116673
	* semantics.cc (finish_builtin_launder): Diagnose function
	pointers and cv void pointers.

2024-09-12  Patrick Palka  <ppalka@redhat.com>

	PR c++/116418
	* tree.cc (strip_typedefs_expr) <case STATEMENT_LIST>: Replace
	this error path with ...
	<case STMT_EXPR>: ... this, returning the original tree.

2024-09-12  Jakub Jelinek  <jakub@redhat.com>

	PR c++/116636
	* method.cc: Include decl.h.
	(use_thunk): Temporarily change deprecated_state to
	UNAVAILABLE_DEPRECATED_SUPPRESS.

2024-09-12  Marek Polacek  <polacek@redhat.com>

	PR c++/96097
	* pt.cc (coerce_template_template_parm): Increment
	processing_template_decl before calling tsubst.

2024-09-12  Simon Martin  <simon@nasilyan.com>

	PR c++/116323
	* search.cc (get_parent_with_private_access): Only call access_in_type
	for RECORD_OR_UNION_TYPE_P base BINFOs.

2024-09-12  Nathaniel Shead  <nathanieloshead@gmail.com>

	PR c++/116496
	* module.cc (trees_in::decl_value): Don't call
	set_defining_module_for_partial_spec here.
	(depset::hash::add_partial_entities): Clarity assertions.
	* pt.cc (add_mergeable_specialization): Always call
	set_defining_module_for_partial_spec when adding a partial spec.

2024-09-11  Alex Coplan  <alex.coplan@arm.com>

	PR libstdc++/116140
	* semantics.cc (anotate_saver): New. Use it ...
	(maybe_convert_cond): ... here, to ensure any ANNOTATE_EXPRs
	remain the outermost expression(s) of the condition.

2024-09-10  Jakub Jelinek  <jakub@redhat.com>

	PR c++/116449
	* typeck.cc (get_member_function_from_ptrfunc): Use save_expr
	on instance_ptr and function even if it doesn't have side-effects,
	as long as it isn't a decl.

2024-09-10  Marek Polacek  <polacek@redhat.com>

	PR c++/116369
	* call.cc (set_up_extended_ref_temp): Don't mark a temporary
	TREE_READONLY if its type is TYPE_HAS_MUTABLE_P.

2024-09-09  David Malcolm  <dmalcolm@redhat.com>

	* constexpr.cc (constexpr_error): Update for renaming of
	diagnostic_info field.
	* cp-tree.h (pedwarn_cxx98): Use "diagnostic_option_id" rather
	than "int".
	* error.cc (cp_adjust_diagnostic_info): Update for renaming of
	diagnostic_info field.
	(pedwarn_cxx98): Use "diagnostic_option_id option_id" rather than
	"int opt".  Update for renaming of diagnostic_info field.
	(diagnostic_set_info): Likewise.

2024-09-09  David Malcolm  <dmalcolm@redhat.com>

	PR other/116613
	* error.cc (cxx_initialize_diagnostics): Rename
	diagnostic_context's "printer" field to "m_printer".
	(cxx_print_error_function): Likewise.
	(cp_diagnostic_starter): Likewise.
	(cp_print_error_function): Likewise.
	(print_instantiation_full_context): Likewise.
	(print_instantiation_partial_context_line): Likewise.
	(maybe_print_constexpr_context): Likewise.
	(print_location): Likewise.
	(print_constrained_decl_info): Likewise.
	(print_concept_check_info): Likewise.
	(print_constraint_context_head): Likewise.
	(print_requires_expression_info): Likewise.
	* module.cc (noisy_p): Likewise.

2024-09-07  Jason Merrill  <jason@redhat.com>

	* decl.cc (check_redeclaration_exception_specification): Remove
	OPT_Wsystem_headers from pedwarn when the old declaration is
	in a system header.  Also check std namespace.

2024-09-07  Patrick Palka  <ppalka@redhat.com>

	PR c++/116567
	* pt.cc (coerce_template_parms): Set tf_partial when substituting
	into a default template argument in a template context.
	(build_extra_args): Set TREE_STATIC on the deferred args if this
	is a partial substitution.
	(add_extra_args): Check TREE_STATIC instead of dependence of args.
	Adjust merging behavior in that case.
	(tsubst_lammda_expr): Check for tf_partial instead of dependence
	of args when determining whether to defer substitution.
	(tsubst_expr) <case LAMBDA_EXPR>: Remove tf_partial early exit.

2024-09-06  Jakub Jelinek  <jakub@redhat.com>

	PR c++/115769
	* cp-tree.h: Partially implement CWG 2867 - Order of initialization
	for structured bindings.
	(cp_finish_decomp): Add TEST_P argument defaulted to false.
	* decl.cc (initialize_local_var): Add DECOMP argument, if true,
	don't build cleanup and temporarily override stmts_are_full_exprs_p
	to 0 rather than 1.  Formatting fix.
	(cp_finish_decl): Invoke cp_finish_decomp for structured bindings
	here, first with test_p.  For automatic structured binding bases
	if the test cp_finish_decomp returned true wrap the initialization
	together with what non-test cp_finish_decomp emits with a
	CLEANUP_POINT_EXPR, and if there are any CLEANUP_STMTs needed, emit
	them around the whole CLEANUP_POINT_EXPR with guard variables for the
	cleanups.  Call cp_finish_decomp using RAII if not called with
	decomp != NULL otherwise.
	(cp_finish_decomp): Add TEST_P argument, change return type from
	void to bool, if TEST_P is true, return true instead of emitting
	actual code for the tuple case, otherwise return false.
	* parser.cc (cp_convert_range_for): Don't call cp_finish_decomp
	after cp_finish_decl.
	(cp_parser_decomposition_declaration): Set DECL_DECOMP_BASE
	before cp_finish_decl call.  Don't call cp_finish_decomp after
	cp_finish_decl.
	(cp_finish_omp_range_for): Don't call cp_finish_decomp after
	cp_finish_decl.
	* pt.cc (tsubst_stmt): Likewise.

2024-09-06  Jason Merrill  <jason@redhat.com>

	PR c++/46457
	PR c++/81665
	* cp-objcp-common.h (cp_objcp_attribute_table): Add
	c_common_clang_attribute_table.

2024-09-05  Marek Polacek  <polacek@redhat.com>

	PR c++/116606
	* decl2.cc (mark_vtable_entries): Temporarily override deprecated_state to
	UNAVAILABLE_DEPRECATED_SUPPRESS.  Remove a warning_sentinel.

2024-09-05  Iain Sandoe  <iain@sandoe.co.uk>

	* coroutines.cc
	(cp_coroutine_transform::build_ramp_function): Separate the
	build of promise constructor and destructor.  When evaluating
	the constructor, check that build_special_member_call returns
	an expression with side effects before adding it.

2024-09-05  Patrick Palka  <ppalka@redhat.com>

	PR c++/113063
	* name-lookup.cc (local_state_t): Clear and restore
	cp_noexcept_operand as well.

2024-09-05  Marek Polacek  <polacek@redhat.com>

	PR c++/116239
	* cp-tree.h (validate_constexpr_redeclaration): Declare.
	* decl.cc (validate_constexpr_redeclaration): No longer static.
	* name-lookup.cc (push_local_extern_decl_alias): Call
	validate_constexpr_redeclaration.

2024-09-05  Nathaniel Shead  <nathanieloshead@gmail.com>

	* class.cc (add_method): Add missing auto_diagnostic_group.
	(handle_using_decl): Likewise.
	(maybe_warn_about_overly_private_class): Likewise.
	(check_field_decl): Likewise.
	(check_field_decls): Likewise.
	(resolve_address_of_overloaded_function): Likewise.
	(note_name_declared_in_class): Likewise.
	* constraint.cc (associate_classtype_constraints): Likewise.
	(diagnose_trait_expr): Clean up whitespace.
	* coroutines.cc (find_coro_traits_template_decl): Add missing
	auto_diagnostic_group.
	(coro_promise_type_found_p): Likewise.
	(coro_diagnose_throwing_fn): Likewise.
	* cvt.cc (build_expr_type_conversion): Likewise.
	* decl.cc (validate_constexpr_redeclaration): Likewise.
	(duplicate_function_template_decls): Likewise.
	(duplicate_decls): Likewise.
	(lookup_label_1): Likewise.
	(check_previous_goto_1): Likewise.
	(check_goto_1): Likewise.
	(make_typename_type): Likewise.
	(make_unbound_class_template): Likewise.
	(check_tag_decl): Likewise.
	(start_decl): Likewise.
	(maybe_commonize_var): Likewise.
	(check_for_uninitialized_const_var): Likewise.
	(reshape_init_class): Likewise.
	(check_initializer): Likewise.
	(cp_finish_decl): Likewise.
	(find_decomp_class_base): Likewise.
	(cp_finish_decomp): Likewise.
	(expand_static_init): Likewise.
	(grokfndecl): Likewise.
	(grokdeclarator): Likewise.
	(check_elaborated_type_specifier): Likewise.
	(lookup_and_check_tag): Likewise.
	(xref_tag): Likewise.
	(cxx_simulate_enum_decl): Likewise.
	(finish_function): Likewise.
	* decl2.cc (check_classfn): Likewise.
	(record_mangling): Likewise.
	(mark_used): Likewise.
	* error.cc (qualified_name_lookup_error): Likewise.
	* except.cc (build_throw): Likewise.
	* init.cc (get_nsdmi): Likewise.
	(diagnose_uninitialized_cst_or_ref_member_1): Likewise.
	(warn_placement_new_too_small): Likewise.
	(build_new_1): Likewise.
	(build_vec_delete_1): Likewise.
	(build_delete): Likewise.
	* lambda.cc (add_capture): Likewise.
	(add_default_capture): Likewise.
	* lex.cc (unqualified_fn_lookup_error): Likewise.
	* method.cc (synthesize_method): Likewise.
	(defaulted_late_check): Likewise.
	* module.cc (trees_in::is_matching_decl): Likewise.
	(trees_in::read_enum_def): Likewise.
	(module_state::check_not_purview): Likewise.
	(module_state::deferred_macro): Likewise.
	(module_state::read_config): Likewise.
	(module_state::check_read): Likewise.
	(declare_module): Likewise.
	(init_modules): Likewise.
	* name-lookup.cc (diagnose_name_conflict): Likewise.
	(lookup_using_decl): Likewise.
	(set_decl_namespace): Likewise.
	(finish_using_directive): Likewise.
	(push_namespace): Likewise.
	(add_imported_namespace): Likewise.
	* parser.cc (cp_parser_check_for_definition_in_return_type): Likewise.
	(cp_parser_userdef_numeric_literal): Likewise.
	(cp_parser_nested_name_specifier_opt): Likewise.
	(cp_parser_new_expression): Likewise.
	(cp_parser_binary_expression): Likewise.
	(cp_parser_lambda_introducer): Likewise.
	(cp_parser_module_declaration): Likewise.
	(cp_parser_import_declaration): Likewise, removing gotos to
	support this.
	(cp_parser_declaration): Add missing auto_diagnostic_group.
	(cp_parser_decl_specifier_seq): Likewise.
	(cp_parser_template_id): Likewise.
	(cp_parser_template_name): Likewise.
	(cp_parser_explicit_specialization): Likewise.
	(cp_parser_placeholder_type_specifier): Likewise.
	(cp_parser_elaborated_type_specifier): Likewise.
	(cp_parser_enum_specifier): Likewise.
	(cp_parser_asm_definition): Likewise.
	(cp_parser_init_declarator): Likewise.
	(cp_parser_direct_declarator): Likewise.
	(cp_parser_class_head): Likewise.
	(cp_parser_member_declaration): Likewise.
	(cp_parser_lookup_name): Likewise.
	(cp_parser_explicit_template_declaration): Likewise.
	(cp_parser_check_class_key): Likewise.
	* pt.cc (maybe_process_partial_specialization): Likewise.
	(determine_specialization): Likewise.
	(check_for_bare_parameter_packs): Likewise.
	(check_template_shadow): Likewise.
	(process_partial_specialization): Likewise.
	(push_template_decl): Likewise.
	(redeclare_class_template): Likewise.
	(convert_nontype_argument_function): Likewise.
	(check_valid_ptrmem_cst_expr): Likewise.
	(convert_nontype_argument): Likewise.
	(convert_template_argument): Likewise.
	(coerce_template_parms): Likewise.
	(tsubst_qualified_id): Likewise.
	(tsubst_expr): Likewise.
	(most_specialized_partial_spec): Likewise.
	(do_class_deduction): Likewise.
	(do_auto_deduction): Likewise.
	* search.cc (lookup_member): Likewise.
	* semantics.cc (finish_non_static_data_member): Likewise.
	(process_outer_var_ref): Likewise.
	(finish_id_expression_1): Likewise.
	(finish_offsetof): Likewise.
	(omp_reduction_lookup): Likewise.
	(finish_omp_clauses): Likewise.
	* tree.cc (check_abi_tag_redeclaration): Likewise.
	(check_abi_tag_args): Likewise.
	* typeck.cc (invalid_nonstatic_memfn_p): Likewise.
	(complain_about_unrecognized_member): Likewise.
	(finish_class_member_access_expr): Likewise.
	(error_args_num): Likewise.
	(warn_for_null_address): Likewise.
	(cp_build_binary_op): Likewise.
	(build_x_unary_op): Likewise.
	(cp_build_unary_op): Likewise.
	(build_static_cast): Likewise.
	(cp_build_modify_expr): Likewise.
	(get_delta_difference): Likewise.
	(convert_for_assignment): Widen scope of auto_diagnostic_group.
	(check_return_expr): Add missing auto_diagnostic_group.
	* typeck2.cc (cxx_incomplete_type_diagnostic): Likewise.

2024-09-04  Marek Polacek  <polacek@redhat.com>

	* pt.cc (coerce_template_template_parm): Return bool instead of int.

2024-09-04  Marek Polacek  <polacek@redhat.com>

	PR c++/113108
	* pt.cc (resolve_overloaded_unification): Call
	maybe_instantiate_noexcept.

2024-09-03  Jason Merrill  <jason@redhat.com>

	* parser.cc (cp_nth_tokens_can_be_std_attribute_p): Don't check
	cxx_dialect.
	* error.cc (maybe_warn_cpp0x): Only complain about C++11 attributes
	if pedantic.

2024-09-03  David Malcolm  <dmalcolm@redhat.com>

	* error.cc (type_to_string): Prefix all output_buffer fields with
	"m_".
	(append_formatted_chunk): Likewise.  Rename "chunk_info" to
	"pp_formatted_chunks" and field cur_chunk_array with
	m_cur_formatted_chunks.

2024-09-02  Richard Sandiford  <richard.sandiford@arm.com>

	* pt.cc (tsubst_stmt): Rename ASM_INPUT_P to ASM_BASIC_P.
	* parser.cc (cp_parser_asm_definition): Likewise.

2024-08-31  Iain Sandoe  <iain@sandoe.co.uk>

	* coroutines.cc (coro_build_frame_access_expr): New.
	(transform_await_expr): Use coro_build_frame_access_expr.
	(transform_local_var_uses): Likewise.
	(build_actor_fn): Likewise.
	(build_destroy_fn): Likewise.
	(cp_coroutine_transform::build_ramp_function): Likewise.

2024-08-30  Jason Merrill  <jason@redhat.com>

	* decl2.cc (c_parse_final_cleanups): Also check
	DECL_FRIEND_PSEUDO_TEMPLATE_INSTANTIATION.

2024-08-30  Jakub Jelinek  <jakub@redhat.com>

	PR c++/110345
	* parser.cc (make_array_declarator): Add STD_ATTRS argument, set
	declarator->std_attributes to it.
	(cp_parser_new_type_id): Warn on non-ignored std_attributes on the
	array declarator which is being omitted.
	(cp_parser_direct_new_declarator): Parse standard attributes after
	closing square bracket, pass it to make_array_declarator.
	(cp_parser_direct_declarator): Pass std_attrs to make_array_declarator
	instead of setting declarator->std_attributes manually.

2024-08-29  David Malcolm  <dmalcolm@redhat.com>

	* error.cc: Include "make-unique.h".
	(deferred_printed_type::m_buffer_ptr): Replace with...
	(deferred_printed_type::m_printed_text): ...this and...
	(deferred_printed_type::m_token_list): ...this.
	(deferred_printed_type::deferred_printed_type): Update ctors for
	above changes.
	(deferred_printed_type::set_text_for_token_list): New.
	(append_formatted_chunk): Pass chunk_obstack to
	append_formatted_chunk.
	(add_quotes): Delete.
	(cxx_format_postprocessor::handle): Reimplement to call
	deferred_printed_type::set_text_for_token_list, rather than store
	buffer pointers.
	(defer_phase_2_of_type_diff): Replace param "buffer_ptr"
	with "formatted_token_list".  Reimplement by storing
	a pointer to formatted_token_list so that the postprocessor can
	put its text there.
	(cp_printer): Convert param "buffer_ptr" to
	"formatted_token_list".  Update calls to
	defer_phase_2_of_type_diff accordingly.

2024-08-29  David Malcolm  <dmalcolm@redhat.com>

	* error.cc: Include "pretty-print-format-impl.h".

2024-08-28  Marek Polacek  <polacek@redhat.com>

	PR c++/116476
	* call.cc (maybe_init_list_as_array): Try convert_like and see if it
	worked.

2024-08-28  Marek Polacek  <polacek@redhat.com>

	PR c++/116424
	* typeck2.cc (process_init_constructor_record): Move the clearing of
	TARGET_EXPR_ELIDING_P down.

2024-08-28  Jason Merrill  <jason@redhat.com>

	* parser.cc (cp_parser_simple_type_specifier): Use
	-Wc++20-extensions for auto parameter pedwarn.
	* pt.cc (do_decl_instantiation, do_type_instantiation): Use
	-Wc++11-extensions for 'extern template'.

2024-08-27  Arsen Arsenović  <arsen@aarsen.me>

	PR c++/109867
	* coroutines.cc (expand_one_await_expression): Replace uses of
	build_case_label with finish_case_label.
	(build_actor_fn): Ditto.
	(create_anon_label_with_ctx): Remove now-unused function.

2024-08-27  Simon Martin  <simon@nasilyan.com>

	PR c++/105483
	* parser.cc (cp_parser_expression_statement): Use %qE instead of
	incorrect %<%T::%D%>. Skip to end of statement and return
	error_mark_node in case of error.

2024-08-27  Jonathan Wakely  <jwakely@redhat.com>

	* cxxapi-data.csv: Add C++20 and C++23 names from <chrono>,
	<format>, <generator>, <iterator>, <print>, and <stdfloat>.
	Set cxx11 dialect for std::ignore in <tuple>. Uncomment
	atomic_flag functions from <atomic>.
	* std-name-hint.gperf: Regenerate.
	* std-name-hint.h: Regenerate.

2024-08-27  Jonathan Wakely  <jwakely@redhat.com>

	* gen-cxxapi-file.py: Fix copyright dates in generated output.

2024-08-27  Iain Sandoe  <iain@sandoe.co.uk>

	PR c++/116482
	* coroutines.cc
	(coro_build_actor_or_destroy_function): Make the parameter
	decls DECL_ARTIFICIAL.

2024-08-27  Nathaniel Shead  <nathanieloshead@gmail.com>

	PR c++/99243
	* module.cc (module_state::set_filename): Handle repeated calls
	to 'set_filename' as long as the CMI path matches.
	(maybe_translate_include): Adjust comment.

2024-08-27  Nathaniel Shead  <nathanieloshead@gmail.com>

	PR c++/110980
	* module.cc (maybe_translate_include): Clean up.

2024-08-26  Arsen Arsenović  <arsen@aarsen.me>

	PR c++/113457
	* coroutines.cc (struct coroutine_info): Add integer field
	awaitable_number.  This is a counter used for assigning unique
	names to awaitable temporaries.
	(get_awaitable_var): Use awaitable_number from coroutine_info
	instead of the static int awn.

2024-08-26  Simon Martin  <simon@nasilyan.com>

	PR c++/115716
	* pt.cc (maybe_process_partial_specialization): Call
	redeclare_class_template.

2024-08-24  Iain Sandoe  <iain@sandoe.co.uk>

	PR c++/110635
	* coroutines.cc
	(cp_coroutine_transform::wrap_original_function_body): Look through
	initial await target expressions to find the actual co_await_expr
	that we need to update.

2024-08-24  Iain Sandoe  <iain@sandoe.co.uk>

	PR c++/102051
	* coroutines.cc
	(cp_coroutine_transform::build_ramp_function): Handle
	"throwing_cleanup" here instead of ...
	(cp_coroutine_transform::apply_transforms): ... here.

2024-08-24  Iain Sandoe  <iain@sandoe.co.uk>

	PR c++/115908
	* coroutines.cc
	(cp_coroutine_transform::build_ramp_function): Rework the return
	value initialisation to initialise the return slot always from
	get_return_object,  even if that implies carrying out conversions
	to do so.

2024-08-24  Iain Sandoe  <iain@sandoe.co.uk>

	PR c++/109682
	* coroutines.cc
	(cp_coroutine_transform::build_ramp_function): Allow for cases where
	get_return_on_allocation_fail has a type convertible to the ramp
	return type.

2024-08-24  Iain Sandoe  <iain@sandoe.co.uk>

	PR c++/100476
	* coroutines.cc
	(cp_coroutine_transform::build_ramp_function): Remove special
	handling of void get_return_object expressions.

2024-08-24  Iain Sandoe  <iain@sandoe.co.uk>

	PR c++/113773
	* coroutines.cc
	(cp_coroutine_transform::build_ramp_function): Only cleanup the
	frame state on exceptions that occur before the initial await
	resume has begun.

2024-08-24  Iain Sandoe  <iain@sandoe.co.uk>

	* call.cc (build_op_delete_call_1): Renamed and added a param
	to allow the caller to prioritize two argument usual deleters.
	(build_op_delete_call): New.
	(build_coroutine_op_delete_call): New.
	* coroutines.cc (coro_get_frame_dtor): Rename...
	(build_coroutine_frame_delete_expr):... to this; simplify to
	use build_op_delete_call for all cases.
	(build_actor_fn): Use revised frame delete function.
	(build_coroutine_frame_alloc_expr): New.
	(cp_coroutine_transform::complete_ramp_function): Rename...
	(cp_coroutine_transform::build_ramp_function): ... to this.
	Reorder code to carry out checks for prerequisites before the
	codegen. Split out the allocation/delete code.
	(cp_coroutine_transform::apply_transforms): Use revised name.
	* coroutines.h: Rename function.
	* cp-tree.h (build_coroutine_op_delete_call): New.

2024-08-24  Iain Sandoe  <iain@sandoe.co.uk>
	    Arsen Arsenović  <arsen@aarsen.me>

	* coroutines.cc (struct suspend_point_info, struct param_info,
	struct local_var_info, struct susp_frame_data,
	struct local_vars_frame_data): Move to coroutines.h.
	(build_actor_fn): Use start/finish function APIs.
	(build_destroy_fn): Likewise.
	(coro_build_actor_or_destroy_function): No longer mark the
	actor / destroyer as DECL_COROUTINE_P.
	(coro_rewrite_function_body): Use class members.
	(cp_coroutine_transform::wrap_original_function_body): Likewise.
	(build_ramp_function): Replace by...
	(cp_coroutine_transform::complete_ramp_function): ...this.
	(cp_coroutine_transform::cp_coroutine_transform): New.
	(cp_coroutine_transform::~cp_coroutine_transform): New
	(morph_fn_to_coro): Replace by...
	(cp_coroutine_transform::apply_transforms): ...this.
	(cp_coroutine_transform::finish_transforms): New.
	* cp-tree.h (morph_fn_to_coro): Remove.
	* decl.cc (emit_coro_helper): Remove.
	(finish_function): Revise handling of coroutine transforms.
	* coroutines.h: New file.

2024-08-24  Iain Sandoe  <iain@sandoe.co.uk>

	* coroutines.cc (build_actor_fn): Arrange to apply any
	required parameter copy DTORs in reverse order to their
	creation.
	(coro_rewrite_function_body): Handle revised param uses.
	(morph_fn_to_coro): Split the ramp function completion
	into a separate function.
	(build_ramp_function): New.

2024-08-24  Iain Sandoe  <iain@sandoe.co.uk>

	* coroutines.cc (build_co_await): Simplify checks for the cases that
	we need to materialise an awaiter.

2024-08-21  Iain Sandoe  <iain@sandoe.co.uk>

	* coroutines.cc (split_coroutine_body_from_ramp): Check
	that the binding level is as expected before attempting
	to outline the function body.

2024-08-20  Nathaniel Shead  <nathanieloshead@gmail.com>

	* module.cc (module_state::write_begin): Return a boolean to
	indicate errors rather than just doing set_error().
	(finish_module_processing): Prevent emission of unnecessary
	errors; only indicate module writing occurred if write_begin
	succeeds.

2024-08-20  Jakub Jelinek  <jakub@redhat.com>

	PR c++/110345
	* decl.cc (grokdeclarator): Apply declarator->std_attributes
	for cdk_array to type, rather than chaining it to returned_attrs.

2024-08-20  Jakub Jelinek  <jakub@redhat.com>

	PR c++/110345
	* parser.cc (cp_parser_base_specifier): Parse standard attributes
	at the start and emit a warning if there are any non-ignored ones.

2024-08-20  Franciszek Witt  <franek.witt@gmail.com>

	PR c++/101232
	* parser.cc (cp_parser_postfix_expression): Commit to the
	parse in case we know its either a cast or invalid syntax.
	(cp_parser_braced_list): Add a heuristic to inform about
	missing comma or operator.

2024-08-20  Patrick Palka  <ppalka@redhat.com>

	PR c++/101463
	* pt.cc (type_unification_real): Directly look for undeduced
	parameters in the default argument instead of doing a trial
	substitution.

2024-08-20  Nathaniel Shead  <nathanieloshead@gmail.com>

	PR c++/115020
	* module.cc (has_definition): Only force writing definitions for
	header_module_p.

2024-08-20  Nathaniel Shead  <nathanieloshead@gmail.com>

	PR c++/116403
	* pt.cc (deduction_guides_for): Use ANY_REACHABLE for lookup of
	deduction guides.
	* module.cc (depset::hash::add_deduction_guides): Likewise.
	(module_state::write_cluster): No longer override deduction
	guides as exported.
	* name-lookup.cc (name_lookup::search_namespace_only): Ignore
	visibility when LOOK_want::ANY_REACHABLE is specified.
	(check_module_override): Ignore visibility when checking for
	ambiguating deduction guides.
	* name-lookup.h (LOOK_want): New flag 'ANY_REACHABLE'.

2024-08-20  Nathaniel Shead  <nathanieloshead@gmail.com>

	PR c++/116382
	* cp-tree.h (get_template_parm_object): Add check_init param.
	* module.cc (trees_in::tree_node): Pass check_init=false when
	building NTTPs.
	* pt.cc (get_template_parm_object): Prevent cp_finish_decl from
	validating the initializer when check_init=false.

2024-08-20  Nathaniel Shead  <nathanieloshead@gmail.com>

	PR c++/116364
	* cp-tree.h (get_mergeable_specialization_flags): Adjust
	signature.
	* module.cc (trees_out::decl_value): Indicate whether this is a
	type or decl specialisation.
	* pt.cc (get_mergeable_specialization_flags): Match against the
	type of a non-decl specialisation.
	(add_mergeable_specialization): Use the already calculated spec
	instead of always adding decl to DECL_TEMPLATE_INSTANTIATIONS.

2024-08-19  Marek Polacek  <polacek@redhat.com>

	PR c++/115657
	* decl.cc (build_enumerator): Call maybe_fold_non_dependent_expr
	instead of fold_non_dependent_expr.

2024-08-19  Marek Polacek  <polacek@redhat.com>

	PR c++/116384
	* pt.cc (tsubst_expr) <case IMPLICIT_CONV_EXPR>: Bail if tsubst
	returns error_mark_node.

2024-08-16  Jakub Jelinek  <jakub@redhat.com>

	PR c++/110345
	* parser.cc (cp_parser_member_declaration): Call maybe_warn_extra_semi
	only if it is empty-declaration, if there are some tokens like
	attribute, pedwarn that the declaration doesn't declare anything.

2024-08-15  Patrick Palka  <ppalka@redhat.com>

	PR c++/116320
	* semantics.cc (check_accessibility_of_qualified_id): Try
	currently_open_class when using the object type as the
	effective qualifying type.

2024-08-15  Patrick Palka  <ppalka@redhat.com>

	PR c++/116327
	PR c++/104981
	PR c++/115550
	* coroutines.cc (morph_fn_to_coro): Use build_fold_indirect_ref
	instead of cp_build_fold_indirect_ref.

2024-08-14  Marek Polacek  <polacek@redhat.com>

	PR c++/116015
	* call.cc (convert_for_arg_passing): Don't set_target_expr_eliding
	when the TARGET_EXPR initializer is a CONSTRUCTOR.

2024-08-10  Patrick Palka  <ppalka@redhat.com>

	PR c++/116276
	* call.cc (joust): Implement P2582R1 inherited vs non-inherited
	guide tiebreaker.
	* cp-tree.h (lang_decl_fn::context): Document usage in
	deduction_guide_p FUNCTION_DECLs.
	(inherited_guide_p): Declare.
	* pt.cc (inherited_guide_p): Define.
	(set_inherited_guide_context): Define.
	(alias_ctad_tweaks): Use set_inherited_guide_context.
	(inherited_ctad_tweaks): Recognize some inherited constructors
	whose scope is a TYPENAME_TYPE.
	(ctor_deduction_guides_for): For C++23 inherited CTAD, iterate
	over TYPE_FIELDS instead of CLASSTYPE_CONSTRUCTORS to recognize
	all inherited constructors.

2024-08-10  Patrick Palka  <ppalka@redhat.com>

	* pt.cc (tsubst_friend_class): Simplify depth comparison test
	in the redeclaration code path to
	DECL_UNINSTANTIATED_TEMPLATE_FRIEND_P.  Clear the flag after
	partial instantiation here ...
	(tsubst_template_decl): ... instead of here.

2024-08-10  Patrick Palka  <ppalka@redhat.com>

	* cp-tree.h (get_identifier_kind): Define.
	(IDENTIFIER_KEYWORD_P): Redefine in terms of get_identifier_kind.
	(IDENTIFIER_CDTOR_P): Likewise.
	(IDENTIFIER_CTOR_P): Likewise.
	(IDENTIFIER_DTOR_P): Likewise.
	(IDENTIFIER_ANY_OP_P): Likewise.
	(IDENTIFIER_OVL_OP_P): Likewise.
	(IDENTIFIER_ASSIGN_OP_P): Likewise.
	(IDENTIFIER_CONV_OP_P): Likewise.
	(IDENTIFIER_TRAIT_P): Likewise.
	* parser.cc (cp_lexer_peek_trait): Mark IDENTIFIER_TRAIT_P
	check UNLIKELY.

2024-08-09  Simon Martin  <simon@nasilyan.com>

	PR c++/115806
	* decl.cc (start_enum): Only set OPAQUE_ENUM_P and
	ENUM_FIXED_UNDERLYING_TYPE_P when pushing a new tag.

2024-08-08  Nathaniel Shead  <nathanieloshead@gmail.com>

	PR c++/115062
	* class.cc (fixup_type_variants): Propagate TREE_ADDRESSABLE.
	(finish_struct_bits): Cleanup now that TREE_ADDRESSABLE is
	propagated by fixup_type_variants.

2024-08-08  Nathaniel Shead  <nathanieloshead@gmail.com>

	* module.cc (module_state::read_cluster): Assume header module
	declarations will require GM merging.

2024-08-08  Nathaniel Shead  <nathanieloshead@gmail.com>

	PR c++/115801
	* pt.cc (tsubst_friend_class): Return the type immediately when
	no tsubsting or name lookup is required.

2024-08-08  Nathaniel Shead  <nathanieloshead@gmail.com>

	PR c++/114950
	* module.cc (trees_out::decl_value): Stream bit indicating
	imported temploid friends early.
	(trees_in::decl_value): Use this bit with key_mergeable.
	(trees_in::key_mergeable): Allow merging attached declarations
	if they're imported temploid friends (which must be namespace
	scope).
	(module_state::read_cluster): Check for GM entities that may
	require merging even when importing from partitions.
	* name-lookup.cc (enum binding_slots): Adjust comment.
	(get_fixed_binding_slot): Always create partition slot.
	(name_lookup::search_namespace_only): Support binding vectors
	with both partition and GM entities to dedup.
	(walk_module_binding): Likewise.
	(name_lookup::adl_namespace_fns): Likewise.
	(set_module_binding): Likewise.
	(check_module_override): Use attachment of the decl when
	checking overrides rather than named_module_p.
	(lookup_imported_hidden_friend): Use partition slot for finding
	mergeable template bindings.
	* name-lookup.h (set_module_binding): Split mod_glob_flag
	parameter into separate global_p and partition_p params.

2024-08-08  Nathaniel Shead  <nathanieloshead@gmail.com>

	* module.cc (trees_in::read_enum_def): Clarify error.

2024-08-07  Patrick Palka  <ppalka@redhat.com>

	PR c++/116064
	* error.cc (get_current_template): If the current scope is
	a partial specialization, return it instead of the primary
	template.
	* pt.cc (instantiate_class_template): Pass the partial
	specialization if any to maybe_diagnose_erroneous_template
	instead of the primary template.

2024-08-07  Julian Brown  <julian@codesourcery.com>
	    Tobias Burnus  <tobias@baylibre.com>

	* decl2.cc (tree-inline.h): Include.
	(static_init_fini_fns): Bump to four entries. Update comment.
	(start_objects, start_partial_init_fini_fn): Add 'omp_target'
	parameter. Support "declare target" decls. Update forward declaration.
	(emit_partial_init_fini_fn): Add 'host_fn' parameter. Return tree for
	the created function. Support "declare target".
	(OMP_SSDF_IDENTIFIER): New macro.
	(partition_vars_for_init_fini): Support partitioning "declare target"
	variables also.
	(generate_ctor_or_dtor_function): Add 'omp_target' parameter. Support
	"declare target" decls.
	(c_parse_final_cleanups): Support constructors/destructors on OpenMP
	offload targets.

2024-08-07  Jakub Jelinek  <jakub@redhat.com>

	PR c++/109126
	* decl.cc (grokvardecl): Implement CWG 2387 - Linkage of
	const-qualified variable template.  Set TREE_PUBLIC on variable
	templates with const qualified types unless static is present.

2024-08-07  Simon Martin  <simon@nasilyan.com>

	PR c++/111592
	* call.cc (build_over_call): Only error out if there's a single
	parameter of type A in a call to A::A(...).

2024-08-07  Jakub Jelinek  <jakub@redhat.com>

	PR c++/116175
	* pt.cc (apply_late_template_attributes): For function/method types
	call cp_build_type_attribute_variant on the non-dependent attributes.
	(rebuild_function_or_method_type): Add ARGS argument.  Use
	apply_late_template_attributes rather than
	cp_build_type_attribute_variant.
	(maybe_rebuild_function_decl_type): Add ARGS argument, pass it to
	rebuild_function_or_method_type.
	(tsubst_function_decl): Adjust caller.
	(tsubst_function_type): Adjust rebuild_function_or_method_type caller.

2024-08-07  Nathaniel Shead  <nathanieloshead@gmail.com>

	PR c++/115231
	* error.cc (dump_function_decl): Add a space before '->' when
	printing deduction guides.
	* module.cc (depset::hash::add_binding_entity): Don't create
	bindings for guides here, only mark dependencies.
	(depset::hash::add_deduction_guides): New.
	(depset::hash::find_dependencies): Add deduction guide
	dependencies for a class template.
	(module_state::write_cluster): Always consider deduction guides
	as exported.
	* pt.cc (deduction_guides_for): Use 'lkp_iterator' instead of
	'ovl_iterator'.

2024-08-07  Nathaniel Shead  <nathanieloshead@gmail.com>

	* parser.cc (cp_parser_class_head): Clarify error message for
	explicit instantiations.

2024-08-07  Patrick Palka  <ppalka@redhat.com>

	PR c++/116064
	* cp-tree.h (erroneous_templates_t): Declare.
	(erroneous_templates): Declare.
	(cp_seen_error): Declare.
	(seen_error): #define to cp_seen_error.
	* error.cc (get_current_template): Define.
	(relaxed_template_errors): Define.
	(cp_adjust_diagnostic_info): Define.
	(cp_seen_error): Define.
	(cxx_initialize_diagnostics): Set
	diagnostic_context::m_adjust_diagnostic_info.
	* module.cc (finish_module_processing): Don't write the
	module if it contains an erroneous template.
	* pt.cc (maybe_diagnose_erroneous_template): Define.
	(instantiate_class_template): Call it.
	(instantiate_decl): Likewise.

2024-08-06  Marek Polacek  <polacek@redhat.com>

	* constexpr.cc (cxx_eval_call_expression): Remove concept_check_p check.
	(cxx_eval_outermost_constant_expr): Likewise.
	* cp-gimplify.cc (cp_genericize_r) <case CALL_EXPR>: Likewise.
	* except.cc (check_noexcept_r): Likewise.

2024-08-06  Jason Merrill  <jason@redhat.com>

	PR c++/116223
	* pt.cc (deducible_expression): Strip all IMPLICIT_CONV_EXPR.
	(unify): Likewise.  Handle resulting function/addr mismatch.

2024-08-06  Jason Merrill  <jason@redhat.com>

	PR c++/116223
	PR c++/112632
	* pt.cc (deducible_expression): Also look through
	IMPLICIT_CONV_EXPR_FORCED.
	(unify): Likewise.

2024-08-06  Jason Merrill  <jason@redhat.com>

	PR c++/94568
	* init.cc (build_zero_init_1): Call cv_unqualified.

2024-08-06  Patrick Palka  <ppalka@redhat.com>

	PR c++/96780
	* cp-gimplify.cc (cp_fold) <case CALL_EXPR>: Fold calls
	to std::forward_like as well.

2024-08-06  Marek Polacek  <polacek@redhat.com>

	* constexpr.cc (cxx_eval_constant_expression): Don't call
	unpack_concept_check.  Add a concept_check_p assert.  Remove
	function_concept_p code.
	* constraint.cc (check_constraint_atom): Remove function concepts code.
	(unpack_concept_check): Remove.
	(get_concept_check_template): Remove Concepts TS code.
	(resolve_function_concept_overload): Remove.
	(resolve_function_concept_check): Remove.
	(resolve_concept_check): Remove Concepts TS code.
	(get_returned_expression): Remove.
	(get_variable_initializer): Remove.
	(get_concept_definition): Remove Concepts TS code.
	(normalize_concept_check): Likewise.
	(build_function_check): Remove.
	(build_variable_check): Remove.
	(build_standard_check): Use concept_definition_p instead of
	standard_concept_p.
	(build_concept_check): Remove variable_concept_p/function_concept_p
	code.
	(build_concept_id): Simplify.
	(build_type_constraint): Likewise.
	(placeholder_extract_concept_and_args): Likewise.
	(satisfy_nondeclaration_constraints): Likewise.
	(check_function_concept): Remove.
	(get_constraint_error_location): Remove Concepts TS code.
	* cp-tree.h (DECL_DECLARED_CONCEPT_P): Remove.
	(check_function_concept): Remove.
	(unpack_concept_check): Remove.
	(standard_concept_p): Remove.
	(variable_concept_p): Remove.
	(function_concept_p): Remove.
	(concept_definition_p): Simplify.
	(concept_check_p): Don't check for CALL_EXPR.
	* decl.cc (check_concept_refinement): Remove.
	(duplicate_decls): Remove check_concept_refinement code.
	(is_concept_var): Remove.
	(cp_finish_decl): Remove is_concept_var.
	(check_concept_fn): Remove.
	(grokfndecl): Give an error about function concepts not being supported
	anymore.  Remove unused code.
	(grokvardecl): Give an error about variable concepts not being
	supported anymore.
	(finish_function): Remove DECL_DECLARED_CONCEPT_P code.
	* decl2.cc (min_vis_expr_r): Use concept_definition_p instead of
	standard_concept_p.
	(maybe_instantiate_decl): Remove DECL_DECLARED_CONCEPT_P check.
	(mark_used): Likewise.
	* error.cc (dump_simple_decl): Use concept_definition_p instead of
	standard_concept_p.
	(dump_function_decl): Remove DECL_DECLARED_CONCEPT_P code.
	(print_concept_check_info): Don't call unpack_concept_check.  Simplify.
	* mangle.cc (write_type_constraint): Likewise.
	* parser.cc (cp_parser_nested_name_specifier_opt): Remove
	function_concept_p code.  Only check concept_definition_p, not
	variable_concept_p/standard_concept_p.
	(add_debug_begin_stmt): Remove DECL_DECLARED_CONCEPT_P code.
	(cp_parser_template_declaration_after_parameters): Remove a stale
	comment.
	* pt.cc (check_explicit_specialization): Remove
	DECL_DECLARED_CONCEPT_P code.
	(process_partial_specialization): Remove variable_concept_p code.
	(lookup_template_variable): Likewise.
	(tsubst_expr) <case CALL_EXPR>: Remove Concepts TS code and simplify.
	(do_decl_instantiation): Remove DECL_DECLARED_CONCEPT_P code.
	(instantiate_decl): Likewise.
	(placeholder_type_constraint_dependent_p): Don't call
	unpack_concept_check.  Add a concept_check_p assert.
	(convert_generic_types_to_packs): Likewise.
	* semantics.cc (finish_call_expr): Remove Concepts TS code and simplify.

2024-08-05  Iain Sandoe  <iain@sandoe.co.uk>

	* coroutines.cc (split_coroutine_body_from_ramp): New.
	(morph_fn_to_coro): Use split_coroutine_body_from_ramp().
	* cp-tree.h (use_eh_spec_block): New.
	* decl.cc (use_eh_spec_block): Make non-static.

2024-08-05  Marek Polacek  <polacek@redhat.com>

	PR c++/115987
	* call.cc (do_warn_dangling_reference): Don't consider a
	temporary with a scalar type that cannot bind to the return type.

2024-08-02  Arsen Arsenović  <arsen@aarsen.me>

	PR c++/105475
	* coroutines.cc (struct coroutine_info): Add from_address.
	Carries the from_address member we looked up earlier.
	(coro_resume_identifier): Remove.  Unused.
	(coro_init_identifiers): Do not initialize the above.
	(void_coro_handle_address): New variable.  Contains the baselink
	for the std::coroutine_handle<void>::address() instance method.
	(get_handle_type_address): New function.  Looks up and validates
	handle_type::address in a given handle_type.
	(get_handle_type_from_address): New function.  Looks up and
	validates handle_type::from_address in a given handle_type.
	(coro_promise_type_found_p): Remove reliance on
	coroutine_handle<> defaulting the promise type to void.  Store
	get_handle_type_* results where appropriate.
	(get_coroutine_from_address): New helper.  Gets the
	handle_type::from_address BASELINK from a coroutine_info.
	(build_actor_fn): Use the get_coroutine_from_address helper and
	void_coro_handle_address.

2024-08-02  Marek Polacek  <polacek@redhat.com>

	PR c++/116169
	* decl.cc (cp_finish_decl): Disallow deleting ::main.

2024-08-02  Iain Sandoe  <iain@sandoe.co.uk>

	* coroutines.cc (struct local_vars_frame_data): Add a
	CTOR.
	(morph_fn_to_coro): Use CTOR for local_vars_frame_data
	instead of brace init.

2024-08-02  Iain Sandoe  <iain@sandoe.co.uk>

	* coroutines.cc (struct susp_frame_data): Remove unused members,
	provide a CTOR.
	(morph_fn_to_coro): Use susp_frame_data CTOR, and make the suspend
	state hash map local to the morph function.

2024-08-02  Iain Sandoe  <iain@sandoe.co.uk>

	* coroutines.cc (replace_continue): Look up expression type.

2024-08-01  Jakub Jelinek  <jakub@redhat.com>

	PR c++/116113
	* semantics.cc (maybe_convert_cond): Check DECL_DECOMP_BASE
	is non-NULL before dereferencing it.
	(finish_switch_cond): Likewise.

2024-08-01  Arsen Arsenović  <arsen@aarsen.me>

	PR c++/112341
	* coroutines.cc (struct coroutine_info): Also cache the
	traits type.
	(ensure_coro_initialized): New function.  Makes sure we have
	initialized the coroutine state successfully, or informs the
	caller should it fail to do so.  Extracted from
	coro_promise_type_found_p.
	(coro_get_traits_class): New function.  Gets the (cached)
	coroutine traits type for a given coroutine.  Extracted from
	coro_promise_type_found_p and refactored to cache the result.
	(coro_promise_type_found_p): Use the two functions above.
	(build_template_co_await_expr): New function.  Builds a
	CO_AWAIT_EXPR representing a CO_AWAIT_EXPR in a template
	declaration.
	(build_co_await): Use the above if processing_template_decl, and
	give it a proper type.
	(coro_dependent_p): New function.  Returns true iff its
	argument is a type-dependent expression OR the current functions
	traits class is type dependent.
	(finish_co_await_expr): Defer expansion only in the case
	coro_dependent_p returns true.
	(finish_co_yield_expr): Ditto.
	(finish_co_return_stmt): Ditto.
	* pt.cc (type_dependent_expression_p): Do not treat
	CO_AWAIT/CO_YIELD specially.

2024-07-31  Marek Polacek  <polacek@redhat.com>

	PR c++/115645
	* init.cc (build_vec_init): When initializing a scalar type, try to
	create a constant initializer.

2024-07-30  Arsen Arsenović  <arsen@aarsen.me>

	PR c++/115906
	* parser.cc (cp_parser_unary_expression): Reject await
	expressions if use of local variables is currently forbidden.
	(cp_parser_yield_expression): Reject yield expressions if use of
	local variables is currently forbidden.

2024-07-30  Arsen Arsenovic  <arsen@aarsen.me>

	PR c++/115906
	* coroutines.cc (register_local_var_uses): Only process
	PARM_DECL and VAR_DECLs.

2024-07-30  Arsen Arsenović  <arsen@aarsen.me>

	PR c++/110855
	* cp-gimplify.cc (fold_builtin_source_location): Use the name of
	the DECL_RAMP_FN of the current function if present.

2024-07-29  Patrick Palka  <ppalka@redhat.com>

	PR c++/88313
	* parser.cc (cp_parser_lambda_declarator_opt): Pass
	lambda_p=true to cp_parser_parameter_declaration_clause.
	(cp_parser_direct_declarator): Pass lambda_p=false to
	to cp_parser_parameter_declaration_clause.
	(cp_parser_parameter_declaration_clause): Add bool lambda_p
	parameter.  Consider lambda_p instead of current_class_type
	when setting parser->auto_is_implicit_function_template_parm_p.
	Don't consider processing_template_parmlist.
	(cp_parser_requirement_parameter_list): Pass lambda_p=false
	to cp_parser_parameter_declaration_clause.

2024-07-28  Jason Merrill  <jason@redhat.com>

	PR c++/115583
	* constexpr.cc (cxx_eval_conditional_expression): Don't
	cp_fold_immediate for if consteval.

2024-07-27  Jason Merrill  <jason@redhat.com>

	PR c++/115986
	* cp-gimplify.cc (remember_escalating_expr): Skip function
	templates.

2024-07-27  Jason Merrill  <jason@redhat.com>

	PR c++/115561
	* semantics.cc (finish_call_expr): Check cp_unevaluated_operand.

2024-07-26  Jason Merrill  <jason@redhat.com>

	PR c++/116052
	* mangle.cc (write_prefix): Handle TRAIT_EXPR.

2024-07-26  Nathaniel Shead  <nathanieloshead@gmail.com>

	PR c++/115757
	* module.cc (trees_out::core_vals): Write warning specs for
	DECLs and EXPRs.
	(trees_in::core_vals): Read warning specs.

2024-07-25  Jason Merrill  <jason@redhat.com>

	PR c++/115403
	PR c++/109753
	* decl.cc (start_preparsed_function): Only call decl_attributes for
	artificial functions.

2024-07-25  Patrick Palka  <ppalka@redhat.com>

	PR c++/115897
	* cp-tree.h (dependent_opaque_alias_p): Declare.
	* pt.cc (push_template_decl): Manually mark a dependent opaque
	alias or dependent alias template specialization as dependent,
	and use structural equality for them.
	(dependent_opaque_alias_p): Define.
	(alias_template_specialization_p): Don't look through an
	opaque alias.
	(complex_alias_template_p): Use dependent_opaque_alias_p instead of
	any_dependent_template_arguments_p directly.
	(dependent_alias_template_spec_p): Don't look through an
	opaque alias.
	(get_underlying_template): Use dependent_opaque_alias_p instead of
	any_dependent_template_arguments_p.
	(instantiate_alias_template): Mention same logic in
	push_template_decl.
	(dependent_type_p_r): Remove dependent_alias_template_spec_p check.
	(any_template_arguments_need_structural_equality_p): Return true
	for a dependent opaque alias.
	(alias_ctad_tweaks): Use template_args_equal instead of same_type_p
	followed by dependent_alias_template_spec_p.
	* tree.cc (strip_typedefs): Don't strip an opaque alias.
	* typeck.cc (structural_comptypes): Compare declaration attributes
	for an opaque alias.

2024-07-25  Patrick Palka  <ppalka@redhat.com>

	PR c++/115897
	* tree.cc (strip_typedefs): Move up the typedef recursion case.
	Never strip a dependent alias template-id that has dependent
	attributes.

2024-07-25  Arsen Arsenović  <arsen@aarsen.me>

	PR c++/110171
	* coroutines.cc (co_await_get_resume_call): New function.
	Returns the await_resume expression of a given co_await.
	* cp-tree.h (co_await_get_resume_call): New function.
	* cvt.cc (convert_to_void): Handle CO_AWAIT_EXPRs and call
	maybe_warn_nodiscard on their resume exprs.

2024-07-25  Arsen Arsenović  <arsen@aarsen.me>

	PR c++/111728
	* coroutines.cc (rewrite_param_uses): Skip unevaluated
	subexpressions.

2024-07-24  Jason Merrill  <jason@redhat.com>

	PR c++/116071
	* parser.cc (cp_parser_simple_type_specifier): Call
	cp_parser_simulate_error if nothing worked.

2024-07-24  Jakub Jelinek  <jakub@redhat.com>

	* constraint.cc (subst_info::quiet, subst_info::noisy): Formatting
	fixes.
	(known_non_bool_p): Comment formatting fixes.
	(unpack_concept_check): Likewise.
	(resolve_function_concept_overload): Likewise.
	(resolve_function_concept_check): Likewise.
	(resolve_concept_check): Likewise.
	(deduce_constrained_parameter): Likewise.
	(finish_type_constraints): Likewise.
	(get_returned_expression): Likewise.
	(get_variable_initializer): Likewise.
	(norm_info::update_context, norm_info::ctx_params): Formatting
	fixes.
	(norm_info::context): Comment formatting fixes.
	(normalize_logical_operation): Likewise.  Formatting fix.
	(normalize_concept_check): Comment formatting fixes.
	(normalize_atom): Likewise.
	(normalize_expression): Likewise.
	(get_normalized_constraints_from_info): Likewise.
	(get_normalized_constraints_from_decl): Likewise.  Formatting
	fixes.
	(atomic_constraints_identical_p): Comment formatting fixes.
	(constraints_equivalent_p): Formatting fixes.
	(inchash::add_constraint): Likewise.
	(associate_classtype_constraints): Comment formatting fixes.
	(get_constraints): Likewise.
	(set_constraints): Likewise.
	(build_concept_check_arguments): Likewise.
	(build_function_check): Likewise.
	(build_concept_check): Likewise.
	(finish_shorthand_constraint): Likewise.
	(get_shorthand_constraints): Likewise.
	(check_constraint_variables): Likewise.
	(tsubst_constraint_variables): Likewise.
	(tsubst_requires_expr): Likewise.
	(get_mapped_args): Likewise.  Formatting fixes.
	(satisfy_atom): Comment formatting fixes.
	(satisfy_constraint_r): Comment wording and formatting fixes.
	(satisfy_normalized_constraints): Comment formatting fixes.
	(satisfy_declaration_constraints): Likewise.
	(evaluate_concept_check): Likewise.
	(finish_requires_expr): Likewise.
	(finish_compound_requirement): Likewise.
	(check_function_concept): Likewise.
	(equivalently_constrained): Likewise.
	(more_constrained): Likewise.
	(diagnose_atomic_constraint): Likewise.
	* cp-tree.h (TREE_LANG_FLAG_0): Fix a comment error,
	FOLD_EXPR_MODIFY_P instead of FOLD_EXPR_MODOP_P.
	(DECL_MAIN_FREESTANDING_P, DECL_MAIN_P): Comment formatting fixes.
	(enum cpp0x_warn_str): Likewise.
	(enum composite_pointer_operation): Likewise.
	(enum expr_list_kind): Likewise.
	(enum impl_conv_rhs): Likewise.
	(enum impl_conv_void): Likewise.
	(struct deferred_access_check): Likewise.
	(ATOMIC_CONSTR_EXPR): Likewise.
	(FUNCTION_REF_QUALIFIED): Likewise.
	(DECL_DEPENDENT_P): Likewise.
	(FOLD_EXPR_MODIFY_P): Likewise.
	(FOLD_EXPR_OP_RAW): Likewise.
	(FOLD_EXPR_PACK): Likewise.
	(FOLD_EXPR_INIT): Likewise.
	(TYPE_WAS_UNNAMED): Likewise.
	(class cp_unevaluated): Likewise.
	(struct ovl_op_info_t assertion): Likewise.
	(cp_declarator::function::requires_clause): Likewise.
	(variable_template_p): Likewise.
	(concept_definition_p): Likewise.
	* logic.cc (clause::clause): Likewise.
	(clause::replace): Likewise.
	(clause::insert): Likewise.  Formatting fixes.
	(struct formula): Comment formatting fixes.
	(formula::branch): Likewise.
	(debug): Formatting fixes.
	(dnf_size_r): Comment formatting fixes.
	(cnf_size_r): Likewise.
	(dnf_size): Likewise.
	(cnf_size): Likewise.
	(branch_clause): Likewise.
	(decompose_term): Likewise.  Formatting fixes.
	(struct subsumption_entry): Comment formatting fixes.
	(subsumption_cache): Likewise.
	(save_subsumption): Likewise.  Formatting fixes.
	(subsumes_constraints_nonnull): Formatting fixes.

2024-07-23  Andi Kleen  <ak@linux.intel.com>

	PR c/83324
	* cp-tree.h (AGGR_INIT_EXPR_MUST_TAIL): Add.
	* parser.cc (cp_parser_statement): Handle musttail.
	(cp_parser_jump_statement): Dito.
	* pt.cc (tsubst_expr): Copy CALL_EXPR_MUST_TAIL_CALL.
	* semantics.cc (simplify_aggr_init_expr): Handle musttail.

2024-07-23  Patrick Palka  <ppalka@redhat.com>

	PR c++/115656
	* constraint.cc (weakly_subsumes): Pass in_decl=tmpl to
	get_normalized_constraints_from_info.  Rename to ...
	(ttp_subsumes): ... this.
	* cp-tree.h (weakly_subsumes): Rename to ...
	(ttp_subsumes): ... this.
	* pt.cc (is_compatible_template_arg): Adjust after renaming.

2024-07-23  Patrick Palka  <ppalka@redhat.com>

	PR c++/115296
	* pt.cc (alias_ctad_tweaks): Use complain=tf_none instead of
	tf_warning_or_error.

2024-07-23  Jakub Jelinek  <jakub@redhat.com>

	* cp-tree.def (CHECK_CONSTR): Remove.
	* cp-tree.h (CHECK_CONSTR_CONCEPT, CHECK_CONSTR_ARGS): Remove.
	* cp-objcp-common.cc (cp_common_init_ts): Don't handle CHECK_CONSTR.
	* tree.cc (cp_tree_equal): Likewise.
	* error.cc (dump_expr): Likewise.
	* cxx-pretty-print.cc (cxx_pretty_printer::expression): Likewise.
	(pp_cxx_check_constraint): Remove.
	(pp_cxx_constraint): Don't handle CHECK_CONSTR.

2024-07-23  Patrick Palka  <ppalka@redhat.com>

	PR c++/104981
	PR c++/115550
	* coroutines.cc (morph_fn_to_coro): Remove unneeded calls
	to convert_to_reference and convert_from_reference when
	passing *this.  Use cp_build_fold_indirect_ref instead
	of directly building INDIRECT_REF.

2024-07-22  Jakub Jelinek  <jakub@redhat.com>

	* cp-tree.def (UNARY_LEFT_FOLD_EXPR): Use FOLD_EXPR_MODIFY_P instead
	of FOLD_EXPR_MOD_P or FOLDEXPR_MOD_P in the comment.  Comment
	formatting fixes.
	(ATOMIC_CONSTEXPR): Use CONSTR_INFO instead of ATOMIC_CONSTR_INFO
	and ATOMIC_CONSTR_MAP instead of ATOMIC_CONSTR_PARMS in the comment.
	Comment formatting fixes.
	(CONJ_CONSTR): Remove comment about third operand.  Use CONSTR_INFO
	instead of CONJ_CONSTR_INFO and DISJ_CONSTR_INFO.
	(CHECK_CONSTR): Use CHECK_CONSTR_ARGS instead of
	CHECK_CONSTR_ARGUMENTS.

2024-07-20  Andi Kleen  <ak@gcc.gnu.org>

	Revert:
	2024-07-20  Andi Kleen  <ak@linux.intel.com>

	PR c/83324
	* cp-tree.h (AGGR_INIT_EXPR_MUST_TAIL): Add.
	* parser.cc (cp_parser_statement): Handle musttail.
	(cp_parser_jump_statement): Dito.
	* pt.cc (tsubst_expr): Copy CALL_EXPR_MUST_TAIL_CALL.
	* semantics.cc (simplify_aggr_init_expr): Handle musttail.

2024-07-20  Andi Kleen  <ak@linux.intel.com>

	PR c/83324
	* cp-tree.h (AGGR_INIT_EXPR_MUST_TAIL): Add.
	* parser.cc (cp_parser_statement): Handle musttail.
	(cp_parser_jump_statement): Dito.
	* pt.cc (tsubst_expr): Copy CALL_EXPR_MUST_TAIL_CALL.
	* semantics.cc (simplify_aggr_init_expr): Handle musttail.

2024-07-19  Patrick Palka  <ppalka@redhat.com>

	PR c++/115783
	* call.cc (build_new_method_call): Generalize METHOD_TYPE
	check to DECL_OBJECT_MEMBER_FUNCTION_P.

2024-07-19  Seyed Sajad Kahani  <sska1377@gmail.com>

	* constraint.cc (hash_placeholder_constraint): Rename to
	iterative_hash_placeholder_constraint.
	(iterative_hash_placeholder_constraint): Rename from
	hash_placeholder_constraint and add the initial val argument.
	* cp-tree.h (hash_placeholder_constraint): Rename to
	iterative_hash_placeholder_constraint.
	(iterative_hash_placeholder_constraint): Renamed from
	hash_placeholder_constraint and add the initial val argument.
	* pt.cc (struct ctp_hasher): Updated to use
	iterative_hash_placeholder_constraint in the case of a valid placeholder
	constraint.
	(auto_hash::hash): Reflect the renaming of hash_placeholder_constraint to
	iterative_hash_placeholder_constraint.

2024-07-18  Marek Polacek  <polacek@redhat.com>

	PR c++/108769
	PR c++/58074
	PR c++/115522
	PR c++/85723
	* class.cc (type_has_non_deleted_trivial_default_ctor): Fix formatting.
	* tree.cc (trivial_type_p): Instead of TYPE_HAS_TRIVIAL_DFLT, use
	type_has_non_deleted_trivial_default_ctor.

2024-07-18  Nathaniel Shead  <nathanieloshead@gmail.com>

	PR c++/115165
	* module.cc (lazy_load_binding): Use 'timevar_cond*' APIs.
	(lazy_load_pendings): Likewise.

2024-07-18  Patrick Palka  <ppalka@redhat.com>

	PR c++/112288
	* pt.cc (tsubst_friend_function): When adjusting existing
	specializations after defining a previously declared template
	friend, consider the most general template and correct
	DECL_TI_ARGS adjustment.

2024-07-18  Patrick Palka  <ppalka@redhat.com>

	PR c++/114104
	* cvt.cc (convert_to_void): Call warn_if_unused_value for
	TRUTH_NOT_EXPR and ADDR_EXPR as well.

2024-07-18  Patrick Palka  <ppalka@redhat.com>

	* decl.cc (make_typename_type): Restrict name lookup failure
	punting to dependentish_scope_p instead of dependent_type_p.
	* error.cc (qualified_name_lookup_error): Improve diagnostic
	when the scope is the current instantiation.
	* parser.cc (cp_parser_diagnose_invalid_type_name): Likewise.
	(cp_parser_conversion_function_id): Don't call push_scope on
	a template scope unless we're in a declaration context.
	(cp_parser_lookup_name): Restrict name lookup failure
	punting to dependentish_scope_p instead of depedent_type_p.
	* semantics.cc (finish_id_expression_1): Likewise.
	* typeck.cc (finish_class_member_access_expr): Likewise.

2024-07-17  Marek Polacek  <polacek@redhat.com>

	PR c++/115900
	* constexpr.cc (cxx_eval_call_expression): Set new_obj to NULL_TREE
	if cxx_fold_indirect_ref set empty_base to true.

2024-07-17  Patrick Palka  <ppalka@redhat.com>

	PR c++/111890
	* pt.cc (maybe_new_partial_specialization): Propagate TYPE_CONTEXT
	to the newly created partial specialization.

2024-07-17  Nathaniel Shead  <nathanieloshead@gmail.com>

	PR c++/99242
	* name-lookup.cc (append_imported_binding_slot): Propagate dups
	flags.

2024-07-16  Nina Ranns  <dinka.ranns@gmail.com>

	PR c++/110159
	* cp-tree.h (init_terminate_fn): Declaration of a new function.
	* decl.cc (cxx_init_decl_processing): If contracts are enabled,
	call init_terminate_fn.
	* except.cc (init_exception_processing): Function refactored to
	call init_terminate_fn.
	(init_terminate_fn): Added new function that initializes
	terminate_fn if	it hasn't already been initialised.

2024-07-16  Iain Sandoe  <iain@sandoe.co.uk>

	PR c++/115434
	PR c++/110871
	PR c++/110872
	* constexpr.cc (cxx_eval_constant_expression): Handle EH_ELSE_EXPR.
	* contracts.cc (finish_contract_attribute): Remove excess line.
	(build_contract_condition_function): Post condition handlers are
	void now.
	(emit_postconditions_cleanup): Remove.
	(emit_postconditions): New.
	(add_pre_condition_fn_call): New.
	(add_post_condition_fn_call): New.
	(apply_preconditions): New.
	(apply_postconditions): New.
	(maybe_apply_function_contracts): New.
	(apply_postcondition_to_return): Remove.
	* contracts.h (apply_postcondition_to_return): Remove.
	(maybe_apply_function_contracts): Add.
	* coroutines.cc (coro_build_actor_or_destroy_function): Do not
	copy contracts to coroutine helpers.
	* decl.cc (finish_function): Handle wrapping a possibly
	transformed function body in contract checks.
	* typeck.cc (check_return_expr): Remove handling of post
	conditions on return expressions.

2024-07-15  Patrick Palka  <ppalka@redhat.com>

	PR c++/115897
	* pt.cc (complex_alias_template_p): Return true for an alias
	template with attributes.
	(get_underlying_template): Don't look through an alias template
	with attributes.

2024-07-13  David Malcolm  <dmalcolm@redhat.com>

	* call.cc: Include "tree-pretty-print-markup.h".
	(implicit_conversion_error): Use highlight_colors::percent_h for
	the labelled range.
	(op_error_string): Split out into...
	(concat_op_error_string): ...this.
	(binop_error_string): New.
	(op_error): Use %e, binop_error_string, highlight_colors::lhs,
	and highlight_colors::rhs.
	(maybe_inform_about_fndecl_for_bogus_argument_init): Add
	"highlight_color" param; use it for the richloc.
	(convert_like_internal): Use highlight_colors::percent_h for the
	labelled_range, and highlight_colors::percent_i for the call to
	maybe_inform_about_fndecl_for_bogus_argument_init.
	(build_over_call): Pass cp_comp_parm_types for new "comp_types"
	param of check_function_arguments.
	(complain_about_bad_argument): Use highlight_colors::percent_h for
	the labelled_range, and highlight_colors::percent_i for the call
	to maybe_inform_about_fndecl_for_bogus_argument_init.
	* cp-tree.h (maybe_inform_about_fndecl_for_bogus_argument_init):
	Add optional highlight_color param.
	(cp_comp_parm_types): New decl.
	(highlight_colors::const percent_h): New decl.
	(highlight_colors::const percent_i): New decl.
	* error.cc: Include "tree-pretty-print-markup.h".
	(highlight_colors::const percent_h): New defn.
	(highlight_colors::const percent_i): New defn.
	(type_to_string): Add param "highlight_color" and use it.
	(print_nonequal_arg): Likewise.
	(print_template_differences): Add params "highlight_color_a" and
	"highlight_color_b".
	(type_to_string_with_compare): Add params "this_highlight_color"
	and "peer_highlight_color".
	(print_template_tree_comparison): Add params "highlight_color_a"
	and "highlight_color_b".
	(cxx_format_postprocessor::handle):
	Use highlight_colors::percent_h and highlight_colors::percent_i.
	(pp_markup::element_quoted_type::print_type): New.
	(range_label_for_type_mismatch::get_text): Pass nullptr for new
	params of type_to_string_with_compare.
	* typeck.cc (cp_comp_parm_types): New.
	(cp_build_function_call_vec): Pass it to check_function_arguments.
	(convert_for_assignment): Use highlight_colors::percent_h for the
	labelled_range.

2024-07-12  Nathaniel Shead  <nathanieloshead@gmail.com>

	* decl.cc (xref_tag): Move assertion into condition.
	* name-lookup.cc (check_module_override): Check for conflicting
	types and using-decls.

2024-07-12  Nathaniel Shead  <nathanieloshead@gmail.com>

	PR c++/114683
	* cp-tree.h (class ovl_iterator): Move definitions of purview_p
	and exporting_p to name-lookup.cc.
	* module.cc (depset::hash::add_binding_entity): Strip
	using-decls.  Remove workarounds.  Handle CONST_DECLs with
	different purview/exported from their enum.
	(enum ct_bind_flags): Remove unnecessary cbf_wrapped flag.
	(module_state::write_cluster): Likewise.
	(module_state::read_cluster): Build USING_DECL for non-function
	usings.
	(binding_cmp): Handle CONST_DECLs with different purview and/or
	exported from their enum.
	(set_instantiating_module): Support CONST_DECLs.
	* name-lookup.cc (get_fixed_binding_slot): Strip USING_DECLs.
	(name_lookup::process_binding): Strip USING_DECLs.
	(name_lookup::process_module_binding): Remove workaround.
	(update_binding): Strip USING_DECLs, remove incorrect check for
	non-extern variables.
	(ovl_iterator::purview_p): Support USING_DECLs.
	(ovl_iterator::exporting_p): Support USING_DECLs.
	(walk_module_binding): Handle stat hack type.
	(do_nonmember_using_decl): Strip USING_DECLs when comparing;
	build USING_DECLs for non-function usings in different scope
	rather than binding directly.
	(get_namespace_binding): Strip USING_DECLs.
	(lookup_name): Strip USING_DECLs.
	(lookup_elaborated_type): Strip USING_DECLs.
	* decl.cc (poplevel): Still support -Wunused for using-decls.
	(lookup_and_check_tag): Remove unnecessary strip_using_decl.
	* parser.cc (cp_parser_template_name): Likewise.
	(cp_parser_nonclass_name): Likewise.
	(cp_parser_class_name): Likewise.

2024-07-11  Nathaniel Shead  <nathanieloshead@gmail.com>

	PR c++/99241
	* decl.cc (duplicate_decls): Merge module entity information.

2024-07-10  Marek Polacek  <polacek@redhat.com>

	* constraint.cc (deduce_concept_introduction, get_deduced_wildcard,
	get_introduction_prototype, introduce_type_template_parameter,
	introduce_template_template_parameter,
	introduce_nontype_template_parameter,
	build_introduced_template_parameter, introduce_template_parameter,
	introduce_template_parameter_pack, introduce_template_parameter,
	introduce_template_parameters, process_introduction_parms,
	check_introduction_list, finish_template_introduction): Remove.
	(finish_shorthand_constraint): Remove a Concepts TS comment.
	* cp-tree.h (check_auto_in_tmpl_args, finish_template_introduction):
	Remove.
	* decl.cc (function_requirements_equivalent_p): Remove pre-C++20 code.
	(grokfndecl): Don't check flag_concepts_ts.
	(grokvardecl): Don't check that concept have type bool.
	* parser.cc (cp_parser_decl_specifier_seq): Don't check
	flag_concepts_ts.
	(cp_parser_introduction_list): Remove.
	(cp_parser_template_id): Remove dead code.
	(cp_parser_simple_type_specifier): Don't check flag_concepts_ts.
	(cp_parser_placeholder_type_specifier): Require require auto or
	decltype(auto) even pre-C++20.  Don't check flag_concepts_ts.
	(cp_parser_type_id_1): Don't check flag_concepts_ts.
	(cp_parser_template_type_arg): Likewise.
	(cp_parser_requires_clause_opt): Remove flag_concepts_ts code.
	(cp_parser_compound_requirement): Don't check flag_concepts_ts.
	(cp_parser_template_introduction): Remove.
	(cp_parser_template_declaration_after_export): Don't call
	cp_parser_template_introduction.
	* pt.cc (template_heads_equivalent_p): Remove pre-C++20 code.
	(find_parameter_pack_data): Remove type_pack_expansion_p.
	(find_parameter_packs_r): Remove flag_concepts_ts code.  Remove
	type_pack_expansion_p code.
	(uses_parameter_packs): Remove type_pack_expansion_p code.
	(make_pack_expansion): Likewise.
	(check_for_bare_parameter_packs): Likewise.
	(fixed_parameter_pack_p): Likewise.
	(tsubst_qualified_id): Remove dead code.
	(extract_autos_r): Remove.
	(extract_autos): Remove.
	(do_auto_deduction): Remove flag_concepts_ts code.
	(type_uses_auto): Likewise.
	(check_auto_in_tmpl_args): Remove.

2024-07-10  Marek Polacek  <polacek@redhat.com>

	PR c++/115645
	* init.cc (build_new): Don't do any deduction for arrays with
	bounds if it's value-initialized.

2024-07-10  Nina Ranns  <dinka.ranns@gmail.com>

	PR c++/113968
	* contracts.cc (grok_contract): Check for error_mark_node early
	exit.

2024-07-09  Jakub Jelinek  <jakub@redhat.com>

	* constexpr.cc (cxx_eval_constant_expression): CWG2819 - Allow
	cv void * null pointer value conversion to object types in constant
	expressions.

2024-07-07  Nathaniel Shead  <nathanieloshead@gmail.com>

	* module.cc (trees_out::get_merge_kind): Use
	LAMBDA_TYPE_EXTRA_SCOPE instead of LAMBDA_EXPR_EXTRA_SCOPE.
	(trees_out::key_mergeable): Likewise.

2024-07-04  Tamar Christina  <tamar.christina@arm.com>

	PR c++/115623
	* semantics.cc (finish_for_cond): Add check for C++ cond.

2024-07-04  Jason Merrill  <jason@redhat.com>

	* error.cc (dump_decl) [OVERLOAD]: Recurse on single case.

2024-07-04  Jason Merrill  <jason@redhat.com>

	* pt.cc (ctad_template_p): Return false for trait names.

2024-07-02  Jakub Jelinek  <jakub@redhat.com>
	    Jason Merrill  <jason@redhat.com>

	PR c++/115754
	* constexpr.cc (cxx_eval_constant_expression) <case CONVERT_EXPR>:
	For conversions to void, pass vc_discard to the recursive call
	and otherwise for tcode other than VIEW_CONVERT_EXPR pass vc_prvalue.

2024-07-02  Jakub Jelinek  <jakub@redhat.com>
	    Jason Merrill  <jason@redhat.com>

	PR c++/115747
	* init.cc: Implement C++26 P3144R2 - Deleting a Pointer to an
	Incomplete Type Should be Ill-formed.
	(build_vec_delete_1): Emit permerror_at and return error_mark_node
	for delete [] on incomplete type.
	(build_delete): Similarly for delete.

2024-07-02  Jakub Jelinek  <jakub@redhat.com>

	PR c++/115745
	* cp-tree.h: Implement C++26 P0963R3 - Structured binding declaration
	as a condition.
	(DECL_DECOMP_BASE): Adjust comment.
	(DECL_DECOMP_IS_BASE): Define.
	* parser.cc (cp_parser_selection_statement): Adjust
	cp_parser_condition caller.
	(cp_parser_condition): Add KEYWORD argument.  Parse
	C++26 structured bindings in conditions.
	(cp_parser_c_for, cp_parser_iteration_statement): Adjust
	cp_parser_condition callers.
	(cp_parser_simple_declaration): Adjust
	cp_parser_decomposition_declaration caller.
	(cp_parser_decomposition_declaration): Add KEYWORD argument.
	If it is not RID_MAX, diagnose for C++23 and older rather than C++14
	and older.  Set DECL_DECOMP_BASE to integer_zero_node for structured
	bindings used in if/while/for conditions or integer_one_node for
	those used in switch conditions.
	* decl.cc (poplevel, check_array_initializer): Use DECL_DECOMP_IS_BASE
	instead of !DECL_DECOMP_BASE.
	(cp_finish_decomp): Diagnose array initializer for structured bindings
	used in conditions.  If using std::tuple_{size,element}, emit
	conversion to bool or integer/enumeration of e into a TARGET_EXPR
	before emitting get method calls.
	* decl2.cc (mark_used): Use DECL_DECOMP_IS_BASE instead of
	!DECL_DECOMP_BASE.
	* module.cc (trees_in::tree_node): Likewise.
	* typeck.cc (maybe_warn_about_returning_address_of_local): Likewise.
	* semantics.cc (maybe_convert_cond): For structured bindings with
	TARGET_EXPR DECL_DECOMP_BASE use that as condition.
	(finish_switch_cond): Likewise.

2024-07-02  Lewis Hyatt  <lhyatt@gmail.com>

	* Make-lang.in: Remove redundant slash.

2024-07-02  Simon Martin  <simon@nasilyan.com>

	PR c++/111160
	* tree.cc (stabilize_expr): Stabilized expressions can have
	TREE_SIDE_EFFECTS if they're volatile.

2024-07-01  Marek Polacek  <polacek@redhat.com>

	PR c++/115469
	* decl.cc (automatic_var_with_nontrivial_dtor_p): New.
	(poplevel_named_label_1): Use it.
	(check_goto_1): Likewise.

2024-07-01  Marek Polacek  <polacek@redhat.com>

	PR c++/115430
	* typeck.cc (cp_build_compound_expr): Call resolve_nondeduced_context
	on RHS.

2024-07-01  Marek Polacek  <polacek@redhat.com>

	DR 2627
	PR c++/94058
	PR c++/104392
	* typeck2.cc (check_narrowing): Don't warn if the conversion isn't
	narrowing as per DR 2627.

2024-06-28  Patrick Palka  <ppalka@redhat.com>

	PR c++/106760
	* call.cc (add_candidates): Relax test for adding a candidate
	to 'bad_cands' to also accept an uninstantiated template candidate
	that has no missing conversions.

2024-06-26  David Malcolm  <dmalcolm@redhat.com>

	* parser.cc (cp_parser_error_1): Pass *global_dc to
	gcc_rich_location::add_location_if_nearby.
	(cp_parser_decl_specifier_seq): Likewise.
	(cp_parser_set_storage_class): Likewise.
	(cp_parser_set_storage_class): Likewise.

2024-06-26  Patrick Palka  <ppalka@redhat.com>

	PR c++/115504
	* semantics.cc (finish_decltype_type): Don't strip the reference
	type (if any) of a capture proxy's captured variable.

2024-06-25  Marek Polacek  <polacek@redhat.com>

	PR c++/115476
	* semantics.cc (finish_trait_expr)
	<case CPTK_HAS_UNIQUE_OBJ_REPRESENTATIONS>: Move below to call
	check_trait_type with kind==2.

2024-06-25  Marek Polacek  <polacek@redhat.com>

	PR c++/115425
	* pt.cc (tsubst_pack_expansion): Return error_mark_node if
	make_pack_expansion doesn't work out.

2024-06-25  Marek Polacek  <polacek@redhat.com>

	PR c++/115501
	* rtti.cc (build_dynamic_cast_1): Return if dcast_fn is erroneous.

2024-06-25  Patrick Palka  <ppalka@redhat.com>

	PR c++/115198
	* pt.cc (alias_ctad_tweaks): Update DECL_NAME of the transformed
	guides.

2024-06-25  Patrick Palka  <ppalka@redhat.com>

	PR c++/115358
	* decl2.cc (mark_used): Call maybe_instantiate_decl for an array
	variable with unknown bound.
	* semantics.cc (finish_decltype_type): Remove now redundant
	handling of array variables with unknown bound.
	* typeck.cc (cxx_sizeof_expr): Likewise.

2024-06-25  Sandra Loosemore  <sloosemore@baylibre.com>

	PR c/115587
	* parser.cc (cp_parser_omp_loop_nest): Move initializations to
	point of declaration.

2024-06-17  Jakub Jelinek  <jakub@redhat.com>

	PR target/111343
	PR c++/115511
	* typeck.cc (cp_compare_floating_point_conversion_ranks): If an
	extended floating point type mv1 has same set of values as more
	than one standard floating point type and mv2 is float, return 2.

2024-06-13  Jason Merrill  <jason@redhat.com>

	PR c++/114683
	* name-lookup.cc (do_nonmember_using_decl): Allow exporting
	a newly inserted decl.

2024-06-13  Jason Merrill  <jason@redhat.com>

	PR c++/115194
	* name-lookup.cc (name_lookup::process_module_binding): Strip an
	OVERLOAD from a non-function.

2024-06-13  Jason Merrill  <jason@redhat.com>

	* module.cc (depset::hash::add_binding_entity): Adjust comment.

2024-06-13  Patrick Palka  <ppalka@redhat.com>

	PR c++/99678
	* parser.cc (cp_parser_constraint_primary_expression): Diagnose
	a bare unresolved unqualified-id.

2024-06-13  Patrick Palka  <ppalka@redhat.com>

	PR c++/115239
	* call.cc (tourney): Don't consider a non-strictly viable
	candidate as the champ if there was ambiguity between two
	strictly viable candidates.

2024-06-13  Andi Kleen  <ak@linux.intel.com>

	* parser.cc (cp_parser_asm_string_expression): Use correct error
	message.

2024-06-13  Andi Kleen  <ak@linux.intel.com>

	* parser.cc (cp_parser_asm_string_expression): Parse close
	parent when constexpr extraction fails.

2024-06-13  Andi Kleen  <ak@linux.intel.com>

	* parser.cc (cp_parser_asm_string_expression): Remove support
	for const char * for asm constexpr.

2024-06-13  Patrick Palka  <ppalka@redhat.com>

	PR c++/115283
	* decl2.cc (min_vis_expr_r) <case TEMPLATE_DECL>: Ignore
	concepts.

2024-06-12  Jason Merrill  <jason@redhat.com>

	* tree.cc (lookup_maybe_add): Use ovl_make when setting OVL_USING_P.

2024-06-12  Jason Merrill  <jason@redhat.com>

	* module.cc (depset::hash::add_binding_entity): Set
	DECL_MODULE_PURVIEW_P instead of asserting.

2024-06-12  Andi Kleen  <ak@linux.intel.com>

	* cp-tree.h (extract): Add new overload to return tree.
	* parser.cc (cp_parser_asm_string_expression): Use tree extract.
	* semantics.cc (cexpr_str::extract): Add new overload to return
	tree.

2024-06-12  David Malcolm  <dmalcolm@redhat.com>

	* error.cc (append_formatted_chunk): Move part of body into
	chunk_info::append_formatted_chunk.

2024-06-12  David Malcolm  <dmalcolm@redhat.com>

	* cxx-pretty-print.cc: Update throughout for fields of
	pretty_printer becoming private.
	* error.cc: Likewise.

2024-06-11  Andi Kleen  <ak@linux.intel.com>

	* parser.cc (cp_parser_asm_string_expression): New function
	to handle constexpr strings for asm.
	(cp_parser_asm_definition): Use cp_parser_asm_string_expression.
	(cp_parser_yield_expression): Dito.
	(cp_parser_asm_specification_opt): Dito.
	(cp_parser_asm_operand_list): Dito.
	(cp_parser_asm_clobber_list): Dito.

2024-06-11  Andi Kleen  <ak@linux.intel.com>

	* cp-tree.h (class cexpr_str): Add.
	* semantics.cc (finish_static_assert): Convert to use cexpr_str.
	(cexpr_str::type_check): Extract constexpr string code to here.
	(cexpr_str::extract): ... and here.

2024-06-08  Simon Martin  <simon@nasilyan.com>

	PR c++/108438
	* parser.cc (cp_parser_postfix_expression): Use
	cp_parser_require_end_of_template_parameter_list to skip to the closing
	'>' upon error parsing the target type of *_cast<*> expressions.

2024-06-07  Simon Martin  <simon@nasilyan.com>

	PR c++/107575
	* decl.cc (duplicate_decls): Check for error_mark_node
	DECL_LOCAL_DECL_ALIAS.

2024-06-07  Jason Merrill  <jason@redhat.com>

	* module.cc (maybe_translate_include): Allow before the main file.

2024-06-07  Patrick Palka  <ppalka@redhat.com>

	PR c++/115378
	* lambda.cc (lambda_capture_field_type): Set
	TEMPLATE_TYPE_PARAMETER_PACK on the auto type of an init-capture
	pack expansion.
	* pt.cc (find_parameter_packs_r) <case TEMPLATE_TYPE_PARM>:
	Restrict TEMPLATE_TYPE_PARAMETER_PACK promotion with
	flag_concepts_ts.

2024-06-05  Jakub Jelinek  <jakub@redhat.com>
	    Frederik Harwath  <frederik@codesourcery.com>
	    Sandra Loosemore  <sandra@codesourcery.com>

	* cp-tree.h (dependent_omp_for_p): Add another tree argument.
	* parser.cc (check_omp_intervening_code): Reject imperfectly nested
	tile.
	(cp_parser_statement_seq_opt): If want_nested_loop, use
	cp_parser_next_tokens_can_be_canon_loop instead of just checking
	for RID_FOR keyword.
	(cp_parser_omp_clause_name): Handle full and partial clause names.
	(cp_parser_omp_clause_full, cp_parser_omp_clause_partial): New
	functions.
	(cp_parser_omp_all_clauses): Formatting fix.  Handle
	PRAGMA_OMP_CLAUSE_PARTIAL and PRAGMA_OMP_CLAUSE_FULL.
	(cp_parser_next_tokens_can_be_canon_loop): New function.
	(cp_parser_omp_loop_nest): Parse C++11 attributes.  Handle tile/unroll
	constructs.  Use cp_parser_next_tokens_can_be_canon_loop instead
	of just checking for RID_FOR keyword.  Only add_stmt
	cp_parser_omp_loop_nest result if it is non-NULL.
	(cp_parser_omp_for_loop): Rename tiling variable to oacc_tiling.  For
	OMP_CLAUSE_SIZES set collapse to list length of OMP_CLAUSE_SIZES_LIST.
	Use cp_parser_next_tokens_can_be_canon_loop instead of just
	checking for RID_FOR keyword.  Remove spurious semicolon.  Don't call
	c_omp_check_loop_binding_exprs if stmt is NULL.  Skip and/or handle
	generated loops.  Remove spurious ()s around & operands.
	(cp_parser_omp_tile_sizes, cp_parser_omp_tile): New functions.
	(OMP_UNROLL_CLAUSE_MASK): Define.
	(cp_parser_omp_unroll): New function.
	(cp_parser_omp_construct): Handle PRAGMA_OMP_TILE and
	PRAGMA_OMP_UNROLL.
	(cp_parser_pragma): Likewise.
	* semantics.cc (finish_omp_clauses): Don't call
	fold_build_cleanup_point_expr for cases which obviously won't need it,
	like checked INTEGER_CSTs.  Handle OMP_CLAUSE_{FULL,PARTIAL,SIZES}
	and diagnose full vs. partial conflict.  Adjust wording of some of the
	conflicting clause diagnostic messages to include word clause.
	(finish_omp_for): Use decl equal to global_namespace as a marker for
	generated loop.  Pass also body to dependent_omp_for_p.  Skip
	generated loops.
	(finish_omp_for_block): Skip generated loops.
	* pt.cc (tsubst_omp_clauses): Handle OMP_CLAUSE_{FULL,PARTIAL,SIZES}.
	(tsubst_stmt): Handle OMP_TILE and OMP_UNROLL.  Handle or skip
	generated loops.
	(dependent_omp_for_p): Add body argument.  If declv vector element
	is NULL, find generated loop.
	* cp-gimplify.cc (cp_gimplify_expr): Handle OMP_TILE and OMP_UNROLL.
	(cp_fold_r): Likewise.
	(cp_genericize_r): Likewise.  Skip generated loops.

2024-06-04  Simon Martin  <simon@nasilyan.com>

	* pt.cc (tsubst_expr): Add missing space after seen_error.
	(dependent_type_p): Likewise.

2024-06-04  Simon Martin  <simon@nasilyan.com>

	PR c++/111106
	* pt.cc (dependent_type_p): Don't fail assert during error recovery.

2024-06-03  Jakub Jelinek  <jakub@redhat.com>

	PR c++/115012
	* parser.cc (cp_parser_direct_declarator): Handle
	abstract declarator starting with ... followed by opening paren.

2024-06-02  Simon Martin  <simon@nasilyan.com>

	PR c++/109958
	* typeck.cc (build_class_member_access_expr): Handle single OVERLOADs.
	(cp_build_addr_expr_1): Likewise.

2024-06-01  Nathaniel Shead  <nathanieloshead@gmail.com>

	PR c++/114867
	* cp-tree.h (OVL_PURVIEW_P): New.
	(ovl_iterator::purview_p): New.
	* module.cc (depset::hash::add_binding_entity): Only ignore
	entities not within module purview. Set OVL_PURVIEW_P on new
	OVERLOADs for emitted declarations.
	(module_state::read_cluster): Imported using-decls are always
	in purview, mark as OVL_PURVIEW_P.
	* name-lookup.h (enum WMB_Flags): New WMB_Purview flag.
	* name-lookup.cc (walk_module_binding): Set WMB_Purview as
	needed.
	(do_nonmember_using_decl): Don't remove from existing OVERLOADs.
	Also reveal non-exported decls. Also reveal 'extern "C"' decls.
	Add workaround to reveal non-function decls.
	* tree.cc (ovl_insert): Adjust to also set OVL_PURVIEW_P when
	needed.

2024-05-29  Jason Merrill  <jason@redhat.com>

	PR c++/109753
	* decl.cc (start_preparsed_function): Call decl_attributes.

2024-05-29  Jason Merrill  <jason@redhat.com>

	* lang-specs.h: Add module interface extensions.

2024-05-29  Patrick Palka  <ppalka@redhat.com>

	PR c++/115223
	* tree.cc (build_cp_fntype_variant): Propagate structural
	equality of the exception-less variant.

2024-05-28  Marek Polacek  <polacek@redhat.com>

	PR c++/109396
	* cp-tree.h (maybe_warn_self_move): Declare.
	* init.cc (perform_member_init): Call maybe_warn_self_move.
	* typeck.cc (maybe_warn_self_move): No longer static.  Change the
	return type to bool.  Also warn when called from
	a member-initializer-list.  Drop the inform call.

2024-05-28  Marek Polacek  <polacek@redhat.com>

	PR c++/114707
	* call.cc (convert_for_arg_passing): Call set_target_expr_eliding.
	* typeck2.cc (replace_placeholders_for_class_temp_r): Don't use pset.
	(digest_nsdmi_init): Call cp_walk_tree_without_duplicates instead of
	cp_walk_tree.

2024-05-28  David Malcolm  <dmalcolm@redhat.com>

	PR bootstrap/115167
	PR bootstrap/115167
	* call.cc: Replace include of "gcc-rich-location.h" with
	"c-family/c-type-mismatch.h".
	* error.cc: Likewise.
	* typeck.cc: Likewise.

2024-05-25  Nathaniel Shead  <nathanieloshead@gmail.com>

	PR c++/102345
	* module.cc (module_may_redeclare): Update error message.

2024-05-24  Nathaniel Shead  <nathanieloshead@gmail.com>

	PR c++/115200
	* parser.cc (cp_parser_error_1): Special-case unexpected module
	directives for better diagnostics.
	(cp_parser_module_declaration): Check that the module
	declaration is at global scope.
	(cp_parser_import_declaration): Sync error message with that in
	cp_parser_error_1.

2024-05-24  Nathaniel Shead  <nathanieloshead@gmail.com>

	* cp-tree.h (module_has_cmi_p): Also include header units.
	(module_maybe_has_cmi_p): Update comment.
	* module.cc (set_defining_module): Only need to track
	declarations for later exporting if the module may have a CMI.
	(set_defining_module_for_partial_spec): Likewise.
	* name-lookup.cc (pushdecl): Likewise.

2024-05-24  Nathaniel Shead  <nathanieloshead@gmail.com>

	* tree.cc (no_linkage_check): Anonymous types can't be accessed
	in a different TU.

2024-05-24  Nathaniel Shead  <nathanieloshead@gmail.com>

	PR c++/114947
	* cp-tree.h (set_defining_module_for_partial_spec): Declare.
	* module.cc (trees_in::decl_value): Track partial specs coming
	from partitions.
	(set_defining_module): Don't track partial specialisations here
	anymore.
	(set_defining_module_for_partial_spec): New function.
	* pt.cc (process_partial_specialization): Call it.

2024-05-23  Jason Merrill  <jason@redhat.com>

	PR c++/115187
	* init.cc (build_delete): Use get_target_expr instead of save_expr.
	* tree.cc (stabilize_expr): Update comment.

2024-05-22  Patrick Palka  <ppalka@redhat.com>

	PR c++/115159
	* tree.cc (build_cp_fntype_variant): Always use structural
	equality for types with a complex exception specification.
	(fixup_deferred_exception_variants): Use structural equality
	for adjusted variants.
	* typeck.cc (comp_except_specs): Require == instead of
	cp_tree_equal for ce_exact noexcept-spec comparison.

2024-05-22  Nathaniel Shead  <nathanieloshead@gmail.com>

	* decl.cc (grokfndecl): Check for main functions with language
	linkage or module attachment.
	(grokvardecl): Check for extern 'C' entities named main.

2024-05-21  Jonathan Wakely  <jwakely@redhat.com>

	PR libstdc++/107800
	* cxxapi-data.csv <to_address>: Change dialect to cxx20.
	* std-name-hint.gperf: Regenerate.
	* std-name-hint.h: Regenerate.

2024-05-21  Patrick Palka  <ppalka@redhat.com>

	PR c++/115139
	* pt.cc (tsubst_expr) <case CONST_DECL>: Exit early if args
	is empty.

2024-05-17  Patrick Palka  <ppalka@redhat.com>

	PR c++/115114
	* pt.cc (maybe_aggr_guide): Consider bases in the paren init case.

2024-05-15  Marek Polacek  <polacek@redhat.com>

	PR c++/114854
	* call.cc (convert_like_internal) <case ck_user>: Don't set
	TARGET_EXPR_DIRECT_INIT_P.

2024-05-15  Marek Polacek  <polacek@redhat.com>

	DR 1693
	PR c++/113760
	DR 569
	* parser.cc (extra_semi_kind): New.
	(maybe_warn_extra_semi): New.
	(cp_parser_declaration): Call maybe_warn_extra_semi.
	(cp_parser_member_declaration): Likewise.

2024-05-15  Jakub Jelinek  <jakub@redhat.com>
	    Jason Merrill  <jason@redhat.com>

	PR lto/113208
	* cp-tree.h (maybe_optimize_cdtor): Remove.
	* decl2.cc (tentative_decl_linkage): Call maybe_make_one_only
	for implicit instantiations of maybe in charge ctors/dtors
	declared inline.
	(import_export_decl): Don't call maybe_optimize_cdtor.
	(c_parse_final_cleanups): Formatting fixes.
	* optimize.cc (can_alias_cdtor): Adjust condition, for
	HAVE_COMDAT_GROUP && DECL_ONE_ONLY && DECL_WEAK return true even
	if not DECL_INTERFACE_KNOWN.
	(maybe_clone_body): Don't clear DECL_SAVED_TREE, instead set it
	to void_node.
	(maybe_clone_body): Remove.
	* decl.cc (cxx_comdat_group): For DECL_CLONED_FUNCTION_P
	functions if SUPPORTS_ONE_ONLY return DECL_COMDAT_GROUP if already
	set.

2024-05-15  Jakub Jelinek  <jakub@redhat.com>

	PR c/115103
	* semantics.cc (finish_omp_clauses): Diagnose grainsize
	used together with num_tasks.

2024-05-15  Patrick Palka  <ppalka@redhat.com>

	PR c++/114994
	* tree.cc (lvalue_kind) <case MODOP_EXPR>: For a class
	assignment, consider the result type.

2024-05-14  Simon Martin  <simon-l.martin@laposte.net>

	PR c++/105760
	* pt.cc (build_deduction_guide): Check for error_mark_node
	result from tsubst_arg_types.

2024-05-14  Jason Merrill  <jason@redhat.com>

	* decl.cc (wrap_cleanups_r): Clarify comment.
	* init.cc (build_vec_init): Update comment.

2024-05-13  Patrick Palka  <ppalka@redhat.com>

	* constraint.cc (norm_info::norm_info): Take a bool instead of
	tsubst_flags_t.
	(norm_info::generate_diagnostics): Turn this predicate function
	into a bool data member.
	(normalize_logical_operation): Adjust after norm_info changes.
	(normalize_concept_check): Likewise.
	(normalize_atom): Likewise.
	(get_normalized_constraints_from_info): Likewise.
	(normalize_concept_definition): Likewise.
	(normalize_constraint_expression): Likewise.
	(normalize_placeholder_type_constraints): Likewise.
	(satisfy_nondeclaration_constraints): Likewise.
	* cp-tree.h (enum tsubst_flags): Remove tf_norm.

2024-05-13  Ken Matsui  <kmatsui@gcc.gnu.org>

	PR c++/115061
	* semantics.cc (finish_trait_expr): Use rank instead of
	__array_rank.

2024-05-13  Patrick Palka  <ppalka@redhat.com>

	PR c++/114974
	PR c++/114901
	PR c++/114903
	* pt.cc (maybe_aggr_guide): Fix obtaining TYPE_FIELDS in
	the paren init case.  Hoist out partial substitution logic
	to apply to the paren init case as well.
	(alias_ctad_tweaks): Substitute outer template arguments into
	a guide's constraints.

2024-05-11  Ken Matsui  <kmatsui@gcc.gnu.org>

	* cp-trait.def: Define __is_nothrow_invocable.
	* constraint.cc (diagnose_trait_expr): Handle
	CPTK_IS_NOTHROW_INVOCABLE.
	* semantics.cc (trait_expr_value): Likewise.
	(finish_trait_expr): Likewise.

2024-05-11  Ken Matsui  <kmatsui@gcc.gnu.org>

	* cp-trait.def: Define __is_invocable.
	* constraint.cc (diagnose_trait_expr): Handle CPTK_IS_INVOCABLE.
	* semantics.cc (trait_expr_value): Likewise.
	(finish_trait_expr): Likewise.
	* cp-tree.h (build_invoke): New function.
	* method.cc (build_invoke): New function.

2024-05-11  Ken Matsui  <kmatsui@gcc.gnu.org>

	* cp-trait.def: Define __array_rank.
	* constraint.cc (diagnose_trait_expr): Handle CPTK_RANK.
	* semantics.cc (trait_expr_value): Likewise.
	(finish_trait_expr): Likewise.

2024-05-11  Ken Matsui  <kmatsui@gcc.gnu.org>

	* cp-trait.def: Define __decay.
	* semantics.cc (finish_trait_type): Handle CPTK_DECAY.

2024-05-11  Ken Matsui  <kmatsui@gcc.gnu.org>

	* cp-trait.def: Define __add_rvalue_reference.
	* semantics.cc (finish_trait_type): Handle
	CPTK_ADD_RVALUE_REFERENCE.

2024-05-11  Ken Matsui  <kmatsui@gcc.gnu.org>

	* cp-trait.def: Define __add_lvalue_reference.
	* semantics.cc (finish_trait_type): Handle
	CPTK_ADD_LVALUE_REFERENCE.

2024-05-11  Ken Matsui  <kmatsui@gcc.gnu.org>

	* cp-trait.def: Define __remove_all_extents.
	* semantics.cc (finish_trait_type): Handle
	CPTK_REMOVE_ALL_EXTENTS.

2024-05-11  Ken Matsui  <kmatsui@gcc.gnu.org>

	* cp-trait.def: Define __remove_extent.
	* semantics.cc (finish_trait_type): Handle CPTK_REMOVE_EXTENT.

2024-05-11  Ken Matsui  <kmatsui@gcc.gnu.org>

	* cp-trait.def: Define __add_pointer.
	* semantics.cc (finish_trait_type): Handle CPTK_ADD_POINTER.
	(object_type_p): New function.
	(referenceable_type_p): Likewise.
	(trait_expr_value): Use object_type_p.

2024-05-11  Ken Matsui  <kmatsui@gcc.gnu.org>

	* cp-trait.def: Define __is_unbounded_array.
	* constraint.cc (diagnose_trait_expr): Handle
	CPTK_IS_UNBOUNDED_ARRAY.
	* semantics.cc (trait_expr_value): Likewise.
	(finish_trait_expr): Likewise.

2024-05-10  Jakub Jelinek  <jakub@redhat.com>

	PR target/114968
	* cp-tree.h (atexit_fn_ptr_type_node, cleanup_type): Adjust macro
	comments.
	(get_cxa_atexit_fn_ptr_type): Declare.
	* decl.cc (get_atexit_fn_ptr_type): Adjust function comment, only
	build type for atexit argument.
	(get_cxa_atexit_fn_ptr_type): New function.
	(get_atexit_node): Call get_cxa_atexit_fn_ptr_type rather than
	get_atexit_fn_ptr_type when using __cxa_atexit.
	(get_thread_atexit_node): Call get_cxa_atexit_fn_ptr_type
	rather than get_atexit_fn_ptr_type.
	(start_cleanup_fn): Add ob_parm argument, call
	get_cxa_atexit_fn_ptr_type or get_atexit_fn_ptr_type depending
	on it and create PARM_DECL also based on that argument.
	(register_dtor_fn): Adjust start_cleanup_fn caller, use
	get_cxa_atexit_fn_ptr_type rather than get_atexit_fn_ptr_type
	for use_dtor casts.
	* except.cc (build_throw): Use get_cxa_atexit_fn_ptr_type ().

2024-05-09  Marek Polacek  <polacek@redhat.com>

	PR c++/114983
	* pt.cc (tsubst_expr) <case SIZEOF_EXPR>: Use copy_warning.
	* semantics.cc (finish_parenthesized_expr): Also suppress
	-Wsizeof-array-div.

2024-05-09  Marek Polacek  <polacek@redhat.com>

	PR c++/85889
	* lambda.cc (add_capture): Add a pedwarn for capturing structured
	bindings.

2024-05-08  Marek Polacek  <polacek@redhat.com>

	PR c++/113582
	* parser.cc (cp_parser_label_for_labeled_statement): suppress_warning
	if it's not enabled at input_location.
	* pt.cc (tsubst_stmt): Call copy_warning.

2024-05-07  Nathaniel Shead  <nathanieloshead@gmail.com>

	PR c++/114856
	* call.cc (make_temporary_var_for_ref_to_temp): Set context for
	temporaries with linkage.
	* init.cc (create_temporary_var): Revert to only set context
	when in a function decl.

2024-05-07  Andrew Pinski  <quic_apinski@quicinc.com>

	PR c++/89224
	* constexpr.cc (cxx_eval_array_reference): Compare main variants
	for the vector/array types instead of the types directly.

2024-05-07  Jakub Jelinek  <jakub@redhat.com>

	PR c++/114459
	* parser.cc (cp_parser_member_declaration): Implement C++26
	P2893R3 - Variadic friends.  Parse friend type declarations
	with ... or with more than one friend type specifier.
	* friend.cc (make_friend_class): Allow TYPE_PACK_EXPANSION.
	* pt.cc (instantiate_class_template): Handle PACK_EXPANSION_P
	in friend classes.

2024-05-07  Marek Polacek  <polacek@redhat.com>

	* decl.cc (duplicate_decls): Don't check VAR_P before
	DECL_DECOMPOSITION_P.
	* init.cc (build_aggr_init): Likewise.
	* parser.cc (cp_parser_range_for): Likewise.
	(do_range_for_auto_deduction): Likewise.
	(cp_convert_range_for): Likewise.
	(cp_convert_omp_range_for): Likewise.
	(cp_finish_omp_range_for): Likewise.
	* pt.cc (extract_locals_r): Likewise.
	(tsubst_omp_for_iterator): Likewise.
	(tsubst_decomp_names): Likewise.
	(tsubst_stmt): Likewise.
	* typeck.cc (maybe_warn_about_returning_address_of_local): Likewise.

2024-05-07  Rainer Orth  <ro@CeBiTec.Uni-Bielefeld.DE>

	* Make-lang.in (cc1plus$(exeext)): Remove $(NETLIBS).

2024-05-07  Nathaniel Shead  <nathanieloshead@gmail.com>

	PR c++/114954
	* cp-tree.h (IS_FAKE_BASE_TYPE): Also apply to unions.

2024-05-07  Nathaniel Shead  <nathanieloshead@gmail.com>

	PR c++/114275
	* cp-tree.h (remove_defining_module): Declare.
	* decl.cc (duplicate_decls): Call remove_defining_module on
	to-be-freed newdecl.
	* module.cc (imported_temploid_friends): Mark as GTY root...
	(init_modules): ...and allocate from ggc.
	(trees_in::decl_value): Only track for declarations that won't
	be discarded.
	(remove_defining_module): New function.

2024-05-06  Qing Zhao  <qing.zhao@oracle.com>

	PR c/53548
	* decl.cc (layout_var_decl): Handle the cases when the DECL is
	union with a flexible array member initializer.

2024-05-06  Qing Zhao  <qing.zhao@oracle.com>

	PR c/53548
	* class.cc (diagnose_flexarrays): Change error to pdewarn for the case
	flexible array members alone in structures.
	* decl.cc (grokdeclarator): Change error to pdewarn for the case
	flexible array members in unions.

2024-05-03  Jason Merrill  <jason@redhat.com>

	PR c++/114935
	* cp-gimplify.cc (cp_genericize_init): Add flags parm.
	(cp_genericize_init_expr): Pass nullptr.
	(cp_genericize_target_expr): Handle cleanup flags.
	* typeck2.cc (build_disable_temp_cleanup): Factor out of...
	(split_nonconstant_init): ...here.
	* cp-tree.h (build_disable_temp_cleanup): Declare.

2024-05-03  Ken Matsui  <kmatsui@gcc.gnu.org>

	* cp-trait.def: Define __is_pointer.
	* constraint.cc (diagnose_trait_expr): Handle CPTK_IS_POINTER.
	* semantics.cc (trait_expr_value): Likewise.
	(finish_trait_expr): Likewise.

2024-05-03  Ken Matsui  <kmatsui@gcc.gnu.org>

	* cp-trait.def: Define __is_volatile.
	* constraint.cc (diagnose_trait_expr): Handle CPTK_IS_VOLATILE.
	* semantics.cc (trait_expr_value): Likewise.
	(finish_trait_expr): Likewise.

2024-05-03  Ken Matsui  <kmatsui@gcc.gnu.org>

	* cp-trait.def: Define __is_const.
	* constraint.cc (diagnose_trait_expr): Handle CPTK_IS_CONST.
	* semantics.cc (trait_expr_value): Likewise.
	(finish_trait_expr): Likewise.

2024-05-03  Patrick Palka  <ppalka@redhat.com>

	* coroutines.cc (instantiate_coro_traits): Adjust call to
	lookup_template_class.
	(instantiate_coro_handle_for_promise_type): Likewise.
	* cp-tree.h (adjust_type_for_entering_scope): Declare.
	(lookup_template_class): Adjust declaration.
	* decl.cc (make_typename_type): Adjust call to
	lookup_template_class. Likewise.
	(get_tuple_size): Likewise.
	(get_tuple_element_type): Likewise.
	* pt.cc (adjust_type_for_entering_scope): Define.
	(tsubst_entering_scope): Define.
	(lookup_template_class): Remove entering_scope parameter.
	Replace tsubst_aggr_type call with tsubst_entering_scope.
	(tsubst_aggr_type): Remove.
	(tsubst_aggr_type_1): Inline into tsubst.
	(tsubst_function_decl): Replace tsubst_aggr_type call
	with tsubst_entering_scope.
	(tsubst_template_decl): Likewise.
	(tsubst_decl): Likewise.
	(tsubst) <case RECORD_TYPE, UNION_TYPE, ENUMERAL_TYPE>:
	Inlined from tsubst_aggr_type_1.
	<case BOUND_TEMPLATE_TEMPLATE_PARM>: Adjust calls to
	lookup_template_class.
	<case TYPENAME_TYPE>: Replace tsubst_aggr_type call with
	tsubst_entering_scope.
	<case UNBOUND_CLASS_TEMPLATE>: Likewise.
	Increment processing_template_decl when substituting the
	context.
	(tsubst_expr) <case FIELD_DECL>: Replace tsubst_aggr_type
	call with tsubst_entering_scope.
	<case TEMPLATE_DECL>: Likewise.
	(instantiate_template): Likewise.
	(resolve_typename_type): Adjust lookup_template_class call
	and call adjust_type_for_entering_scope afterward.
	(listify): Adjust lookup_template_class call.
	(alias_ctad_tweaks): Likewise.
	* semantics.cc (finish_template_type): Adjust lookup_template_class
	call and maybe call adjust_type_for_entering_scope afterward.

2024-05-02  Nathaniel Shead  <nathanieloshead@gmail.com>

	PR c++/114917
	* parser.cc (cp_parser_declaration_seq_opt): Clear
	parser->in_unbraced_* flags when parsing toplevel declarations.

2024-05-02  Jakub Jelinek  <jakub@redhat.com>

	PR c++/114458
	* parser.cc (cp_parser_pure_specifier): Implement C++26 P2573R2
	- = delete("should have a reason");.  Parse deleted-function-body.
	* decl.cc (duplicate_decls): Copy DECL_INITIAL from DECL_DELETED_FN
	olddecl to newdecl if it is a STRING_CST.
	(cp_finish_decl): Handle deleted init with a reason.
	* decl2.cc: Include "escaped_string.h".
	(grokfield): Handle deleted init with a reason.
	(mark_used): Emit DECL_DELETED_FN reason in the message if any.
	* cp-tree.h (DECL_DELETED_FN): Document representation of
	= delete("reason") on a DECL.

2024-05-02  Nathaniel Shead  <nathanieloshead@gmail.com>

	PR c++/114630
	* module.cc (depset::hash::add_partial_entities): Mark GM
	specializations as unreached.
	(depset::hash::find_dependencies): Also reach entities in the
	DECL_TEMPLATE_SPECIALIZATIONS list.

2024-05-02  Nathaniel Shead  <nathanieloshead@gmail.com>

	PR c++/105224
	* class.cc (finish_struct_1): Also push classes attached to a
	module into the 'keyed_classes' list.
	* decl.cc (record_key_method_defined): Don't push classes
	attached to a named module into the 'keyed_classes' list.
	* module.cc (trees_in::read_class_def): Likewise.
	* decl2.cc (import_export_class): Uniquely emit vtables for
	non-template classes attached to a named module.
	(vtables_uniquely_emitted): New function.
	(import_export_decl): Update comments. Update with knowledge
	about new kinds of uniquely emitted vtables.

2024-05-01  Jason Merrill  <jason@redhat.com>

	* cp-tree.h (base_ctor_identifier): Adjust comment.
	* call.cc (in_charge_arg_for_name): Abort on deleting dtor.
	* decl2.cc (maybe_retrofit_in_chrg): Don't add it for
	destructors without vbases, either.
	* constexpr.cc (cxx_eval_call_expression): Remove workaround.

2024-05-01  Jason Merrill  <jason@redhat.com>

	PR c++/113706
	* decl.cc (decls_match): Handle memchr return type being
	const-qualified.

2024-05-01  Nathaniel Shead  <nathanieloshead@gmail.com>

	* name-lookup.cc (walk_module_binding): Use the
	partition-specific hidden flag instead of the top-level
	decl_hidden.

2024-05-01  Nathaniel Shead  <nathanieloshead@gmail.com>

	PR c++/114868
	* module.cc (depset::hash::add_binding_entity): Propagate
	OVL_USING_P for using-declarations.

2024-05-01  Nathaniel Shead  <nathanieloshead@gmail.com>

	PR c++/107688
	* name-lookup.cc (push_namespace): Error when exporting
	namespace with internal linkage.
	* parser.h (struct cp_parser): Add new flag
	'in_unbraced_export_declaration_p'.
	* parser.cc (cp_debug_parser): Print the new flag.
	(cp_parser_new): Initialise the new flag.
	(cp_parser_module_export): Set the new flag.
	(cp_parser_class_specifier): Clear and restore the new flag.
	(cp_parser_import_declaration): Imports can now appear directly
	in a linkage specification.
	(cp_parser_declaration): Categorise declarations as "name" or
	"special"; error on the later in contexts where the former is
	required.
	(cp_parser_class_head): Error when exporting a partial
	specialisation.

2024-04-30  Jakub Jelinek  <jakub@redhat.com>

	PR c++/114456
	* parser.cc (cp_parser_decomposition_declaration): Implement C++26
	P0609R3 - Attributes for Structured Bindings.  Parse attributed
	identifier lists for structured binding declarations, pass the
	attributes to start_decl.

2024-04-30  Nathaniel Shead  <nathanieloshead@gmail.com>

	PR c++/105320
	PR c++/114275
	* cp-tree.h (propagate_defining_module): Declare.
	(lookup_imported_hidden_friend): Declare.
	* decl.cc (duplicate_decls): Also check if hidden decls can be
	redeclared in this module.
	* module.cc (imported_temploid_friends): New.
	(init_modules): Initialize it.
	(trees_out::decl_value): Write it; don't consider imported
	temploid friends as attached to a module.
	(trees_in::decl_value): Read it.
	(get_originating_module_decl): Follow the owning decl for an
	imported temploid friend.
	(propagate_defining_module): New.
	* name-lookup.cc (get_mergeable_namespace_binding): New.
	(lookup_imported_hidden_friend): New.
	* pt.cc (tsubst_friend_function): Propagate defining module for
	new friend functions.
	(tsubst_friend_class): Lookup imported hidden friends.  Check
	for valid module attachment of existing names.  Propagate
	defining module for new classes.

2024-04-30  Nathaniel Shead  <nathanieloshead@gmail.com>

	* cp-tree.h (module_may_redeclare): Add default parameter.
	* decl.cc (duplicate_decls): Don't emit errors for failed
	module_may_redeclare.
	(xref_tag): Likewise.
	(start_enum): Likewise.
	* semantics.cc (begin_class_definition): Likewise.
	* module.cc (module_may_redeclare): Clean up logic. Emit error
	messages on failure.

2024-04-30  Patrick Palka  <ppalka@redhat.com>

	PR c++/114889
	* module.cc (trees_in::read_class_def): Look through
	TEMPLATE_DECL when adding to CLASSTYPE_BEFRIENDING_CLASSES.

2024-04-30  Patrick Palka  <ppalka@redhat.com>

	PR c++/114888
	* typeck.cc (cp_build_binary_op) <case *_DIV_*>: Add missing
	dependence check for the second sizeof operand.

2024-04-26  Patrick Palka  <ppalka@redhat.com>

	* error.cc (print_instantiation_partial_context_line): Clear the
	pretty printer prefix around the call to diagnostic_show_locus.

2024-04-25  Jakub Jelinek  <jakub@redhat.com>

	PR c++/111284
	* constexpr.cc (cxx_bind_parameters_in_call): For PARM_DECLs with
	TREE_ADDRESSABLE types use vc_glvalue rather than vc_prvalue for
	cxx_eval_constant_expression and if it doesn't have the same
	type as it should, cast the reference type to reference to type
	before convert_from_reference and instead of adjust_temp_type
	take address of the arg, cast to reference to type and then
	convert_from_reference.
	(cxx_eval_constant_expression) <case PARM_DECL>: For lval case
	on parameters with TREE_ADDRESSABLE types lookup result in
	ctx->globals if possible.  Otherwise if lookup in ctx->globals
	was successful for parameter with TREE_ADDRESSABLE type,
	recurse with vc_prvalue on the returned value.

2024-04-25  Jakub Jelinek  <jakub@redhat.com>

	PR lto/113208
	* cp-tree.h (maybe_optimize_cdtor): Declare.
	* decl2.cc (import_export_decl): Call it for cloned cdtors.
	* optimize.cc (maybe_optimize_cdtor): New function.

2024-04-24  Patrick Palka  <ppalka@redhat.com>

	PR c++/114709
	* constexpr.cc (cxx_fold_indirect_ref): Restrict object/offset
	canonicalization to RECORD_TYPE member accesses.

2024-04-23  Nathaniel Shead  <nathanieloshead@gmail.com>

	* parser.cc (cp_parser_parameter_declaration): Check if
	decl_specifiers.type is null.

2024-04-23  Patrick Palka  <ppalka@redhat.com>

	PR c++/114795
	* module.cc (trees_in::is_matching_decl): Propagate deduced
	function return type.

2024-04-23  Jakub Jelinek  <jakub@redhat.com>

	* parser.cc (cp_parser_using_declaration): Spelling fix: favour
	-> favor.

2024-04-23  Jakub Jelinek  <jakub@redhat.com>

	PR c++/114784
	* method.cc (implicitly_declare_fn): Call clone_attrs
	on DECL_ATTRIBUTES on STRIP_TEMPLATE (inherited_ctor) rather than
	inherited_ctor.  Also copy DECL_DISREGARD_INLINE_LIMITS flag from it.

2024-04-23  Nathaniel Shead  <nathanieloshead@gmail.com>

	PR c++/114078
	* decl.cc (grokdeclarator): Check allocation functions for xobj
	parameters.

2024-04-16  Jakub Jelinek  <jakub@redhat.com>

	PR c++/114706
	* constexpr.cc (check_bit_cast_type): Handle ARRAY_TYPE.

2024-04-15  Nathaniel Shead  <nathanieloshead@gmail.com>
	    Patrick Palka  <ppalka@redhat.com>

	PR c++/114600
	* module.cc (depset::hash::add_binding_entity): Require both
	WMB_Using and WMB_Export for GMF entities.

2024-04-14  Nathaniel Shead  <nathanieloshead@gmail.com>

	PR c++/106820
	* module.cc (trees_in::decl_value): Assemble alias when needed.

2024-04-13  Patrick Palka  <ppalka@redhat.com>

	* module.cc (struct bytes_in::bits_in): Define defaulted
	move ctor.
	(struct bytes_out::bits_out): Likewise.

2024-04-13  Patrick Palka  <ppalka@redhat.com>

	* module.cc: Update comment about classes defined within.
	(class data): Enclose in an anonymous namespace.
	(data::calc_crc): Moved from bytes::calc_crc.
	(class bytes): Remove.  Move bit_flush to namespace scope.
	(class bytes_in): Enclose in an anonymous namespace.  Inherit
	directly from data and adjust accordingly.  Move b and bflush
	members to bits_in.
	(class bytes_out): As above.  Remove is_set static data member.
	(bit_flush): Moved from class bytes.
	(struct bytes_in::bits_in): Define.
	(struct bytes_out::bits_out): Define.
	(bytes_in::stream_bits): Define.
	(bytes_out::stream_bits): Define.
	(bytes_out::bflush): Moved to bits_out/in.
	(bytes_in::bflush): Likewise
	(bytes_in::bfill): Removed.
	(bytes_out::b): Moved to bits_out/in.
	(bytes_in::b): Likewise.
	(class trees_in): Enclose in an anonymous namespace.
	(class trees_out): Enclose in an anonymous namespace.
	(trees_out::core_bools): Add bits_out/in parameter and use it.
	Unconditionally stream a bit for public_flag.  Add early exits
	as appropriate.
	(trees_out::core_bools): Likewise.
	(trees_out::lang_decl_bools): Add bits_out/in parameter and use
	it.  Flush the current bit buffer at the start.  Unconditionally
	stream a bit for module_keyed_decls_p.
	(trees_in::lang_decl_bools): Likewise.
	(trees_out::lang_type_bools): Add bits_out/in parameter and use
	it.  Flush the current bit buffer at the start.
	(trees_in::lang_type_bools): Likewise.
	(trees_out::tree_node_bools): Construct a bits_out object and
	use/pass it.
	(trees_in::tree_node_bools): Likewise.
	(trees_out::decl_value): Likewise.
	(trees_in::decl_value): Likewise.
	(module_state::write_define): Likewise.
	(module_state::read_define): Likewise.

2024-04-12  Marek Polacek  <polacek@redhat.com>

	PR c++/109966
	* typeck2.cc (potential_prvalue_result_of): Remove.
	(replace_placeholders_for_class_temp_r): Check TARGET_EXPR_ELIDING_P.
	Use a pset.  Don't replace_placeholders in TARGET_EXPRs that initialize
	a function argument.

2024-04-12  Patrick Palka  <ppalka@redhat.com>

	PR c++/99426
	* module.cc (merge_kind::MK_local_type): New enumerator.
	(merge_kind_name): Update.
	(trees_out::chained_decls): Move BLOCK-specific handling
	of DECL_LOCAL_DECL_P decls to ...
	(trees_out::core_vals) <case BLOCK>: ... here.  Stream
	BLOCK_VARS manually.
	(trees_in::core_vals) <case BLOCK>: Stream BLOCK_VARS
	manually.  Handle deduplicated local types..
	(trees_out::key_local_type): Define.
	(trees_in::key_local_type): Define.
	(trees_out::get_merge_kind) <case FUNCTION_DECL>: Return
	MK_local_type for a local type.
	(trees_out::key_mergeable) <case FUNCTION_DECL>: Use
	key_local_type.
	(trees_in::key_mergeable) <case FUNCTION_DECL>: Likewise.
	(trees_in::is_matching_decl): Be flexible with type mismatches
	for local entities.
	(trees_in::register_duplicate): Also register the
	DECL_TEMPLATE_RESULT of a TEMPLATE_DECL as a duplicate.
	(depset_cmp): Return 0 for equal IDENTIFIER_HASH_VALUEs.

2024-04-12  Jason Merrill  <jason@redhat.com>
	    Patrick Palka  <ppalka@redhat.com>

	PR c++/113141
	* call.cc (reference_binding): For an invalid cast, warn and don't
	recalculate.

2024-04-12  Jason Merrill  <jason@redhat.com>
	    Patrick Palka  <ppalka@redhat.com>

	DR 1996
	PR c++/113141
	* call.cc (reference_binding): Check direct binding from
	a single-element list.

2024-04-12  Jakub Jelinek  <jakub@redhat.com>

	PR c++/114691
	* semantics.cc (simplify_loop_decl_cond): Use cp_build_unary_op with
	TRUTH_NOT_EXPR on ANNOTATE_EXPR argument (if any) rather than
	ANNOTATE_EXPR itself.

2024-04-12  Patrick Palka  <ppalka@redhat.com>

	PR c++/114393
	* pt.cc (tsubst_lambda_expr): Also defer all dependent
	substitution.

2024-04-12  Jakub Jelinek  <jakub@redhat.com>

	PR c++/114426
	* constexpr.cc (is_valid_constexpr_fn): Return false/diagnose with
	complain destructors in classes with virtual bases.

2024-04-12  Patrick Palka  <ppalka@redhat.com>

	PR c++/114393
	PR c++/107457
	PR c++/93595
	* cp-tree.h (LAMBDA_EXPR_EXTRA_ARGS): Define.
	(tree_lambda_expr::extra_args): New field.
	* module.cc (trees_out::core_vals) <case LAMBDA_EXPR>: Stream
	LAMBDA_EXPR_EXTRA_ARGS.
	(trees_in::core_vals) <case LAMBDA_EXPR>: Likewise.
	* pt.cc (has_extra_args_mechanism_p): Return true for LAMBDA_EXPR.
	(tree_extra_args): Handle LAMBDA_EXPR.
	(tsubst_lambda_expr): Use LAMBDA_EXPR_EXTRA_ARGS to defer templated
	substitution into a lambda-expr if we lost the template context.
	Add sanity check for error_mark_node result from begin_lambda_type.

2024-04-11  Patrick Palka  <ppalka@redhat.com>

	PR c++/114303
	* constraint.cc (tsubst_requires_expr): Clear
	REQUIRES_EXPR_EXTRA_ARGS before calling build_extra_args.
	* pt.cc (tree_extra_args): Define.
	(extract_locals_r): Assert *_EXTRA_ARGS is empty.
	(tsubst_stmt) <case IF_STMT>: Clear IF_SCOPE on the new
	IF_STMT.  Call build_extra_args on the new IF_STMT instead
	of t which might already have IF_STMT_EXTRA_ARGS.

2024-04-11  Jakub Jelinek  <jakub@redhat.com>

	PR c++/114409
	* pt.cc (tsubst_expr) <case ANNOTATE_EXPR>: Move to ...
	(tsubst_stmt) <case ANNOTATE_EXPR>: ... here.  Use tsubst_expr
	instead of RECUR for the last 2 arguments.

2024-04-10  Jakub Jelinek  <jakub@redhat.com>

	PR c++/114462
	* semantics.cc: Implement C++26 P2809R3 - Trivial infinite
	loops are not Undefined Behavior.
	(maybe_warn_for_constant_evaluated): Add trivial_infinite argument
	and emit special diagnostics for that case.
	(finish_if_stmt_cond): Adjust caller.
	(finish_loop_cond): New function.
	(finish_while_stmt): Use it.
	(finish_do_stmt): Likewise.
	(finish_for_stmt): Likewise.

2024-04-10  Nathaniel Shead  <nathanieloshead@gmail.com>

	PR c++/104040
	* semantics.cc (expand_or_defer_fn_1): Keep DECL_SAVED_TREE for
	all vague linkage cdtors with modules.

2024-04-10  Nathaniel Shead  <nathanieloshead@gmail.com>

	PR c++/99377
	* module.cc (trees_in::install_entity): Overwrite entity map
	index if installing from a partition.

2024-04-09  Jakub Jelinek  <jakub@redhat.com>

	PR c++/114580
	* semantics.cc (finish_if_stmt_cond): Call
	maybe_warn_for_constant_evaluated with IF_STMT_CONSTEXPR_P (if_stmt)
	as the second argument, rather than true/false depending on if
	it is if constexpr with non-dependent constant expression with
	bool type.

2024-04-09  Jakub Jelinek  <jakub@redhat.com>

	* constexpr.cc (build_new_constexpr_heap_type): Fix duplicated words
	in comment; is is -> is.
	* cp-tree.def (CO_RETURN_EXPR): Fix duplicated words in comment;
	for for -> for.
	* parser.cc (fixup_blocks_walker): Fix duplicated words in comment;
	is is -> is.
	* semantics.cc (fixup_template_type): Fix duplicated words in comment;
	for for -> for.
	(finish_omp_for): Fix duplicated words in comment; the the -> the.
	* pt.cc (more_specialized_fn): Fix duplicated words in comment;
	think think -> think.
	(type_targs_deducible_from): Fix duplicated words in comment; the the
	-> the.

2024-04-05  Marek Polacek  <polacek@redhat.com>

	PR c++/111132
	* constexpr.cc (get_function_named_in_call): Use
	cp_get_fndecl_from_callee.
	* cvt.cc (cp_get_fndecl_from_callee): If there's a
	DECL_LOCAL_DECL_ALIAS, use it.

2024-04-05  Jakub Jelinek  <jakub@redhat.com>

	PR c++/114572
	* cp-gimplify.cc (cxx_omp_clause_apply_fn): Call build_cplus_new
	on build_call_a result if it has class type.

2024-04-04  centurion  <centurion009@proton.me>

	PR c++/114377
	* pt.cc (find_template_parameter_info::found): Use TREE_TYPE for
	TEMPLATE_DECL instead of DECL_INITIAL.

2024-04-02  Marek Polacek  <polacek@redhat.com>

	PR c++/114479
	* semantics.cc (trait_expr_value) <case CPTK_IS_ARRAY>: Return false
	for zero-sized arrays.

2024-04-02  Marek Polacek  <polacek@redhat.com>

	PR c++/103825
	* typeck.cc (is_bitfield_expr_with_lowered_type): Handle
	CLEANUP_POINT_EXPR.

2024-04-02  Jason Merrill  <jason@redhat.com>

	PR c++/114561
	PR c++/114562
	* call.cc (convert_like_internal): Avoid adding qualification
	conversion in direct reference binding.

2024-04-01  Jason Merrill  <jason@redhat.com>

	* typeck.cc (maybe_warn_about_returning_address_of_local):
	Permerror in C++26.

2024-03-28  Jason Merrill  <jason@redhat.com>

	PR c++/100667
	* semantics.cc (same_type_ref_bind_p): New.
	(finish_trait_expr): Use it.

2024-03-26  Jakub Jelinek  <jakub@redhat.com>

	PR c++/112724
	* error.cc (dump_expr): Handle EXCESS_PRECISION_EXPR like NOP_EXPR.

2024-03-25  Marek Polacek  <polacek@redhat.com>

	PR c++/114349
	* name-lookup.cc (maybe_push_to_top_level): For a non-lambda,
	don't push to top level if decl_function_context is non-null.
	* pt.cc (maybe_instantiate_noexcept): Use maybe_push_to_top_level.

2024-03-25  Marek Polacek  <polacek@redhat.com>

	PR c++/114439
	* init.cc (can_init_array_with_p): Return true for a VEC_INIT_EXPR
	wrapped in a TARGET_EXPR.

2024-03-22  Marek Polacek  <polacek@redhat.com>

	PR c++/59465
	* init.cc (can_init_array_with_p): New.
	(perform_member_init): Check it.

2024-03-21  Marek Polacek  <polacek@redhat.com>

	PR c++/110323
	* decl2.cc (min_vis_expr_r) <case VAR_DECL>: Do nothing for
	decl_constant_var_p VAR_DECLs.

2024-03-20  Jakub Jelinek  <jakub@redhat.com>

	* coroutines.cc (expand_one_await_expression): Use
	integer_zero_node instead of build_int_cst (integer_type_node, 0)
	and integer_one_node instead of build_int_cst (integer_type_node, 1).

2024-03-19  Nathaniel Shead  <nathanieloshead@gmail.com>

	* cp-tree.h (module_maybe_has_cmi_p): New function.
	* decl.cc (grokfndecl): Mark block-scope functions as public if
	they could be visible in other TUs.
	* decl2.cc (no_linkage_error): Don't error for declarations that
	could be defined in other TUs since C++20. Suppress duplicate
	errors from 'check_global_declaration'.
	* tree.cc (no_linkage_check): In relaxed mode, don't consider
	types in a module CMI to have no linkage.

2024-03-16  Nathaniel Shead  <nathanieloshead@gmail.com>

	PR c++/112631
	* cp-tree.h (named_module_attach_p): New function.
	* decl.cc (start_decl): Check for attachment not purview.
	(grokmethod): Likewise.

2024-03-14  Chung-Lin Tang  <cltang@baylibre.com>

	* parser.cc (cp_parser_oacc_data_clause): Add parsing support for
	'readonly' modifier, set OMP_CLAUSE_MAP_READONLY if readonly modifier
	found, update comments.
	(cp_parser_oacc_cache): Add parsing support for 'readonly' modifier,
	set OMP_CLAUSE__CACHE__READONLY if readonly modifier found, update
	comments.

2024-03-12  Nathaniel Shead  <nathanieloshead@gmail.com>

	PR c++/98645
	PR c++/98688
	PR c++/111224
	* module.cc (enum tree_tag): Add new tag for builtin types.
	(trees_out::start): POLY_INT_CSTs can be emitted.
	(trees_in::start): Likewise.
	(trees_out::core_vals): Stream POLY_INT_CSTs.
	(trees_in::core_vals): Likewise.
	(trees_out::type_node): Handle vectors with multiple coeffs.
	(trees_in::tree_node): Likewise.
	(init_modules): Register target-specific builtin types. Bump
	initial capacity slightly.

2024-03-08  Jakub Jelinek  <jakub@redhat.com>

	* pt.cc (tsubst_expr): Handle MEM_REF.

2024-03-08  Jakub Jelinek  <jakub@redhat.com>

	PR debug/113918
	* cp-objcp-common.cc (cp_type_dwarf_attribute): Return 1
	for DW_AT_export_symbols on anonymous structs or unions.

2024-03-08  Jakub Jelinek  <jakub@redhat.com>

	PR c++/113802
	* parser.cc (cp_parser_parameter_declaration): Move the xobj_param_p
	pack diagnostics after ellipsis handling and if an error is reported,
	pretend this specifier didn't appear.  Formatting fix.

2024-03-07  Nathaniel Shead  <nathanieloshead@gmail.com>

	PR c++/114229
	* module.cc (trees_out::core_bools): Redetermine
	DECL_INTERFACE_KNOWN on stream-in for vtables and tinfo.
	* decl2.cc (import_export_decl): Add fixme for ABI changes with
	module vtables and tinfo.

2024-03-07  Patrick Palka  <ppalka@redhat.com>

	PR c++/103994
	* cp-tree.h (add_mergeable_specialization): Remove second
	parameter.
	* module.cc (depset::disc_bits::DB_ALIAS_TMPL_INST_BIT): Remove.
	(depset::disc_bits::DB_ALIAS_SPEC_BIT): Remove.
	(depset::is_alias_tmpl_inst): Remove.
	(depset::is_alias): Remove.
	(merge_kind::MK_tmpl_alias_mask): Remove.
	(merge_kind::MK_alias_spec): Remove.
	(merge_kind_name): Remove entries for alias specializations.
	(trees_out::core_vals) <case TEMPLATE_DECL>: Adjust after
	removing is_alias_tmpl_inst.
	(trees_in::decl_value): Adjust add_mergeable_specialization
	calls.
	(trees_out::get_merge_kind) <case depset::EK_SPECIALIZATION>:
	Use MK_decl_spec for alias template specializations.
	(trees_out::key_mergeable): Simplify after MK_tmpl_alias_mask
	removal.
	(depset::hash::make_dependency): Adjust after removing
	DB_ALIAS_TMPL_INST_BIT.
	(specialization_add): Don't allow alias templates when !decl_p.
	(depset::hash::add_specializations): Remove now-dead code
	accomodating alias template specializations in the type table.
	* pt.cc (lookup_template_class): Dispatch early to
	instantiate_alias_template for alias templates.  Simplify
	accordingly.
	(add_mergeable_specialization): Remove alias_p parameter and
	simplify accordingly.

2024-03-07  Patrick Palka  <ppalka@redhat.com>

	PR c++/110730
	PR c++/105512
	* module.cc (module_state::write_namespaces): Stream the
	abi_tag attribute of an inline namespace.
	(module_state::read_namespaces): Likewise.

2024-03-07  Marek Polacek  <polacek@redhat.com>

	PR c++/110031
	* pt.cc (lookup_and_finish_template_variable): Pass complain to
	mark_used.

2024-03-07  Nathaniel Shead  <nathanieloshead@gmail.com>

	PR c++/98356
	* typeck2.cc (cxx_incomplete_type_diagnostic): Don't assume
	'member' will be a FUNCTION_DECL (or something like it).

2024-03-07  Nathaniel Shead  <nathanieloshead@gmail.com>

	PR c++/98881
	* module.cc (trees_out::tpl_parms_fini): Stream out DECL_CONTEXT
	for template template parameters.
	(trees_in::tpl_parms_fini): Read it.

2024-03-06  Marek Polacek  <polacek@redhat.com>

	PR c++/114114
	* pt.cc (maybe_instantiate_noexcept): Save/restore
	cp_unevaluated_operand, c_inhibit_evaluation_warnings, and
	cp_noexcept_operand around the tsubst_expr call.

2024-03-06  Nathaniel Shead  <nathanieloshead@gmail.com>

	PR c++/113629
	* pt.cc (type_unification_real): Only use DEDUCE_CONV for the
	return type of a conversion function.

2024-03-06  Patrick Palka  <ppalka@redhat.com>

	* module.cc (trees_out::get_merge_kind) <case depset::EK_DECL>:
	Accomodate class-scope DECL_UNINSTANTIATED_TEMPLATE_FRIEND_P
	TEMPLATE_DECL.  Consolidate IDENTIFIER_ANON_P cases.

2024-03-05  Patrick Palka  <ppalka@redhat.com>

	* parser.cc (cp_parser_translation_unit): Relax GMF contents
	error into a pedwarn.

2024-03-04  Nathaniel Shead  <nathanieloshead@gmail.com>

	* name-lookup.cc (walk_module_binding): Remove completed FIXME.
	(do_nonmember_using_decl): Mark redeclared entities as exported
	when needed. Check for re-exporting internal linkage types.

2024-03-01  Patrick Palka  <ppalka@redhat.com>

	PR c++/104919
	PR c++/106009
	* module.cc (depset::hash::sneakoscope): Remove.
	(trees_out::decl_node): Always add a dependency on a local type.
	(depset::hash::find_dependencies): Remove sneakoscope stuff.

2024-03-01  Nathaniel Shead  <nathanieloshead@gmail.com>

	PR c++/114170
	* module.cc (has_definition): Fall back to DECL_INITIALIZED_P
	when DECL_INITIAL is not set on a template.
	(module_state::write_inits): Only increment count when
	initializers are actually written.

2024-03-01  Nathaniel Shead  <nathanieloshead@gmail.com>

	PR c++/114005
	* init.cc (create_temporary_var): Use current_scope instead of
	current_function_decl.

2024-03-01  Patrick Palka  <ppalka@redhat.com>

	* decl.cc (maybe_register_incomplete_var): Restrict second
	branch to static data members from a not-yet-complete class.

2024-03-01  Marek Polacek  <polacek@redhat.com>

	PR c++/110358
	PR c++/109642
	* call.cc (no_dangling_p): New.
	(reference_like_class_p): Use it.
	(do_warn_dangling_reference): Use it.  Don't warn when the function
	or its enclosing class has attribute gnu::no_dangling.
	* tree.cc (cxx_gnu_attributes): Add gnu::no_dangling.
	(handle_no_dangling_attribute): New.

2024-03-01  Patrick Palka  <ppalka@redhat.com>

	PR c++/110025
	PR c++/114138
	* cp-tree.h (make_cast_auto): Declare.
	* parser.cc (cp_parser_functional_cast): If the type is an auto,
	replace it with a level-less one via make_cast_auto.
	* pt.cc (find_parameter_packs_r): Don't treat level-less auto
	as a type parameter pack.
	(tsubst) <case TEMPLATE_TYPE_PARM>: Generalize CTAD placeholder
	auto handling to all level-less autos.
	(make_cast_auto): Define.
	(do_auto_deduction): Handle replacement of a level-less auto.

2024-03-01  Jakub Jelinek  <jakub@redhat.com>

	PR c++/92687
	* decl.cc (lookup_decomp_type): Return NULL_TREE if decomp_type_table
	doesn't have entry for V.
	* semantics.cc (finish_decltype_type): If ptds.saved, assert
	DECL_HAS_VALUE_EXPR_P is true and decide on tuple vs. non-tuple based
	on if lookup_decomp_type is NULL or not.

2024-02-29  Marek Polacek  <polacek@redhat.com>

	PR c++/113987
	* call.cc (conv_binds_to_reference_parm_p): New.
	* cp-tree.h (conv_binds_to_reference_parm_p): Declare.
	* init.cc (find_uninit_fields_r): Call it.

2024-02-29  Nathaniel Shead  <nathanieloshead@gmail.com>

	PR c++/111710
	* cp-tree.h (DECL_MODULE_KEYED_DECLS_P): Remove tree checking.
	(struct lang_decl_base): Update comments and fix whitespace.
	* module.cc (trees_out::lang_decl_bools): Always write
	module_keyed_decls_p flag...
	(trees_in::lang_decl_bools): ...and always read it.
	(trees_out::decl_value): Handle all kinds of keyed decls.
	(trees_in::decl_value): Likewise.
	(trees_in::tree_value): Deduplicate LAMBDA_EXPRs.
	(maybe_key_decl): Also support lambdas attached to fields,
	parameters, and types. Key lambdas attached to fields to their
	class.
	(trees_out::get_merge_kind): Likewise.
	(trees_out::key_mergeable): Likewise.
	(trees_in::key_mergeable): Support keyed decls in a TYPE_DECL
	container.
	* parser.cc (cp_parser_class_head): Start a lambda scope when
	parsing base classes.

2024-02-28  Jakub Jelinek  <jakub@redhat.com>
	    Patrick Palka  <ppalka@redhat.com>

	PR c++/113976
	* decl.cc (grokdeclarator): Don't call cp_apply_type_quals_to_decl
	on DECL_TEMPLATE_INSTANTIATED VAR_DECLs.

2024-02-28  Nathaniel Shead  <nathanieloshead@gmail.com>

	PR c++/113970
	PR c++/114013
	* decl.cc (make_rtl_for_nonlocal_decl): Don't defer inline
	variables.

2024-02-23  Jakub Jelinek  <jakub@redhat.com>

	PR c++/113083
	* cp-gimplify.cc (cp_fold): For targetm.cxx.cdtor_returns_this ()
	wrap r into a COMPOUND_EXPR and return folded CALL_EXPR_ARG (x, 0).

2024-02-19  Patrick Palka  <ppalka@redhat.com>

	PR c++/113966
	* constraint.cc (tsubst_compound_requirement): Don't check
	the noexcept condition or the return-type-requirement when
	partially substituting.

2024-02-17  Marek Polacek  <polacek@redhat.com>

	PR c++/113158
	* search.cc (maybe_check_overriding_exception_spec): Defer checking
	when a noexcept couldn't be instantiated & evaluated to false/true.

2024-02-16  Marek Polacek  <polacek@redhat.com>

	DR 1351
	* search.cc (maybe_check_overriding_exception_spec): Don't error about
	a looser exception specification if the overrider is deleted.

2024-02-16  Marek Polacek  <polacek@redhat.com>

	PR c++/113789
	PR c++/113853
	* typeck.cc (treat_lvalue_as_rvalue_p): Update code to better
	reflect [expr.prim.id.unqual]#4.2.

2024-02-16  Jakub Jelinek  <jakub@redhat.com>

	PR c++/113929
	* parser.cc (cp_parser_parameter_declaration): Diagnose this specifier
	on template parameter declaration.

2024-02-16  Patrick Palka  <ppalka@redhat.com>

	* module.cc (trees_out::core_bools): Stream TREE_UNAVAILABLE.
	(trees_in::core_bools): Likewise.
	(trees_out::core_vals): Stream LAMBDA_EXPR_REGEN_INFO.
	(trees_in::core_vals): Likewise.

2024-02-14  Nathaniel Shead  <nathanieloshead@gmail.com>

	PR c++/113708
	* decl.cc (make_rtl_for_nonlocal_decl): Defer inline variables.
	* decl2.cc (import_export_decl): Support inline variables.

2024-02-14  Patrick Palka  <ppalka@redhat.com>

	PR c++/113908
	PR c++/113332
	* method.cc (synthesized_method_walk): Use maybe_push_to_top_level.

2024-02-14  Nathaniel Shead  <nathanieloshead@gmail.com>

	PR c++/99573
	* decl.cc (start_enum): Reorder check for redeclaring in module.
	Add missing auto_diagnostic_groups.

2024-02-13  Marek Polacek  <polacek@redhat.com>

	DR 1693
	PR c++/113760
	* parser.cc (cp_parser_member_declaration): Only pedwarn about an extra
	semicolon in C++98.

2024-02-13  Tobias Burnus  <tburnus@baylibre.com>

	PR middle-end/113904
	* parser.cc (cp_parser_omp_context_selector): Handle splitting of
	OMP_TRAIT_PROPERTY_EXPR into OMP_TRAIT_PROPERTY_{DEV_NUM,BOOL}_EXPR.

2024-02-13  Patrick Palka  <ppalka@redhat.com>

	* Make-lang.in (CFLAGS-cp/module.o): Add $(ZLIBINC).
	* module.cc: Include <zlib.h>.
	(bytes::calc_crc): Use crc32 from zlib.
	(bytes_out::set_crc): Use crc32_combine from zlib.

2024-02-13  Patrick Palka  <ppalka@redhat.com>

	* module.cc (depset::hash::add_specializations): Use
	STRIP_TEMPLATE consistently.
	(get_originating_module_decl): Handle class-scope CONST_DECL.

2024-02-13  Patrick Palka  <ppalka@redhat.com>

	* lambda.cc (lambda_function): Call get_class_binding_direct
	instead of lookup_member to sidestep lazy loading.
	* name-lookup.cc (check_local_shadow): Punt if we're in a
	function context that's not actual parsing.

2024-02-13  Jason Merrill  <jason@redhat.com>

	PR c++/113612
	* pt.cc (process_partial_specialization): Return early
	on redeclaration.

2024-02-13  Marek Polacek  <polacek@redhat.com>

	PR c++/112436
	* except.cc (expand_start_catch_block): Pass tf_warning_or_error to
	is_admissible_throw_operand_or_catch_parameter.
	(build_throw): Pass complain to
	is_admissible_throw_operand_or_catch_parameter.
	(complete_ptr_ref_or_void_ptr_p): Add a tsubst_flags_t parameter.  Use
	it.  Return bool.  Call complete_type_or_maybe_complain instead of
	complete_type_or_else.
	(is_admissible_throw_operand_or_catch_parameter): Add a tsubst_flags_t
	parameter.  Use it.  Guard error calls.

2024-02-13  Alex Coplan  <alex.coplan@arm.com>

	PR c++/113658
	* cp-objcp-common.cc (cp_feature_table): Remove entry for
	cxx_constexpr_string_builtins.

2024-02-12  Marek Polacek  <polacek@redhat.com>

	PR c++/113545
	* constexpr.cc (cxx_eval_switch_expr): If the condition doesn't reduce
	to an INTEGER_CST, consider it non-constant.

2024-02-10  Marek Polacek  <polacek@redhat.com>

	DR 2237
	PR c++/107126
	PR c++/97202
	* parser.cc (cp_parser_unqualified_id): Downgrade the DR2237 error to
	a pedwarn.
	(cp_parser_constructor_declarator_p): Likewise.

2024-02-10  Jakub Jelinek  <jakub@redhat.com>

	* tree.cc (debug_binfo): Use HOST_WIDE_INT_PRINT_DEC instead of "%ld"
	and casts to long.
	* pt.cc (print_template_statistics): Use HOST_SIZE_T_PRINT_DEC
	and casts to fmt_size_t instead of "%ld" and casts to long.
	* class.cc (dump_class_hierarchy_1): Use HOST_WIDE_INT_PRINT_UNSIGNED
	instead of "%lu" and casts to unsigned long.  For TYPE_ALIGN, use
	%u instead of %lu and drop casts to unsigned long.
	* parser.cc (cp_lexer_peek_nth_token): Use HOST_SIZE_T_PRINT_DEC
	and casts to fmt_size_t instead of "%ld" and casts to long.

2024-02-09  Marek Polacek  <polacek@redhat.com>

	PR c++/113834
	* semantics.cc (finish_type_pack_element): Perform range checking
	before tree_to_shwi.

2024-02-09  Marek Polacek  <polacek@redhat.com>

	PR c++/98388
	* coroutines.cc (coro_rewrite_function_body): Pass tf_warning_or_error
	to build_throw.
	(morph_fn_to_coro): Likewise.
	* cp-tree.h (build_throw): Adjust.
	* except.cc (expand_end_catch_block): Pass tf_warning_or_error to
	build_throw.
	(build_throw): Add a tsubst_flags_t parameter.  Use it.  Remove
	redundant variable.  Guard an inform call.
	* parser.cc (cp_parser_throw_expression): Pass tf_warning_or_error
	to build_throw.
	* pt.cc (tsubst_expr) <case THROW_EXPR>: Pass complain to build_throw.

2024-02-09  Patrick Palka  <ppalka@redhat.com>

	PR c++/112580
	* module.cc (trees_in::read_class_def): When streaming in
	an anonymous union field of an as-base class, don't overwrite
	ANON_AGGR_TYPE_FIELD.

2024-02-08  Patrick Palka  <ppalka@redhat.com>

	PR c++/113649
	* pt.cc (do_class_deduction): Add outer_targs parameter.
	Substitute outer arguments into the CTAD template.
	(do_auto_deduction): Pass outer_targs to do_class_deduction.

2024-02-08  Jason Merrill  <jason@redhat.com>

	* pt.cc (create_template_parm_object): Pass TARGET_EXPR to
	cxx_constant_value.

2024-02-06  Jakub Jelinek  <jakub@redhat.com>

	PR c++/113788
	* parser.cc (CP_PARSER_FLAGS_PARAMETER): New enumerator.
	(cp_parser_decl_specifier_seq): Parse RID_THIS only if
	CP_PARSER_FLAGS_PARAMETER is set in flags.
	(cp_parser_parameter_declaration): Or in CP_PARSER_FLAGS_PARAMETER
	when calling cp_parser_decl_specifier_seq.

2024-02-06  Marek Polacek  <polacek@redhat.com>

	* method.cc (early_check_defaulted_comparison): Add
	auto_diagnostic_group.

2024-02-06  Jason Merrill  <jason@redhat.com>

	PR c++/107291
	* method.cc (early_check_defaulted_comparison): Fail if not friend.

2024-02-05  Jason Merrill  <jason@redhat.com>

	PR c++/111286
	* tree.cc (rvalue): Don't drop cv-quals from an array.

2024-02-03  Patrick Palka  <ppalka@redhat.com>

	PR c++/110006
	PR c++/112769
	* constraint.cc (subst_info::quiet): Accomodate non-diagnostic
	tsubst flags.
	(tsubst_valid_expression_requirement): Likewise.
	(tsubst_simple_requirement): Return a substituted _REQ node when
	processing_template_decl.
	(tsubst_type_requirement_1): Accomodate non-diagnostic tsubst
	flags.
	(tsubst_type_requirement): Return a substituted _REQ node when
	processing_template_decl.
	(tsubst_compound_requirement): Likewise.  Accomodate non-diagnostic
	tsubst flags.
	(tsubst_nested_requirement): Likewise.
	(tsubst_requires_expr): Don't defer partial substitution when
	processing_constraint_expression_p is true, in which case return
	a substituted REQUIRES_EXPR.
	* pt.cc (tsubst_expr) <case REQUIRES_EXPR>: Accomodate
	non-diagnostic tsubst flags.

2024-02-02  Jason Merrill  <jason@redhat.com>

	PR c++/110084
	* pt.cc (tsubst_function_decl): Only check a function defaulted
	outside the class if the class is complete.

2024-02-02  Jason Merrill  <jason@redhat.com>

	PR c++/112439
	* constexpr.cc (cxx_eval_store_expression): Check empty_base
	before marking a CONSTRUCTOR readonly.

2024-02-02  Jason Merrill  <jason@redhat.com>

	PR c++/113638
	* cp-tree.h: Adjust comment.
	* pt.cc (instantiate_template): Set VAR_HAD_UNKNOWN_BOUND for
	variable template.

2024-02-01  Marek Polacek  <polacek@redhat.com>

	* call.cc (reference_like_class_p): Consider even non-templates for
	std::span-like classes.

2024-02-01  Patrick Palka  <ppalka@redhat.com>

	PR c++/112737
	* pt.cc (iterative_hash_template_arg) <case TEMPLATE_DECL>:
	Adjust hashing to match cp_tree_equal.
	(ctp_hasher::hash): Also hash CLASS_PLACEHOLDER_TEMPLATE.
	* tree.cc (cp_tree_equal) <case TEMPLATE_DECL>: Return true
	for ttp TEMPLATE_DECLs if their TEMPLATE_TEMPLATE_PARMs are
	equivalent.
	* typeck.cc (structural_comptypes) <case TEMPLATE_TYPE_PARM>:
	Use cp_tree_equal to compare CLASS_PLACEHOLDER_TEMPLATE.

2024-02-01  Marek Polacek  <polacek@redhat.com>

	PR c++/112437
	* typeck.cc (treat_lvalue_as_rvalue_p): Bail out on sk_namespace in
	the move on throw of parms loop.

2024-01-30  Marek Polacek  <polacek@redhat.com>

	PR c++/110358
	PR c++/109640
	* call.cc (reference_like_class_p): Don't warn for std::span-like
	classes.

2024-01-30  Patrick Palka  <ppalka@redhat.com>

	PR c++/113640
	* call.cc (keep_unused_object_arg): Punt for an xobj member
	function.

2024-01-30  Patrick Palka  <ppalka@redhat.com>

	PR c++/113644
	* pt.cc (unify) <case INTEGER_CST>: Handle NULL_TREE type.

2024-01-30  Nathaniel Shead  <nathanieloshead@gmail.com>

	PR c++/107594
	* module.cc (get_module): Bail on empty name.

2024-01-29  Jason Merrill  <jason@redhat.com>

	PR c++/113544
	* pt.cc (instantiate_class_template): Don't partially instantiate.
	(tsubst_stmt): Likewise.

2024-01-26  Nathaniel Shead  <nathanieloshead@gmail.com>

	PR c++/113580
	* module.cc (struct post_process_data): Create.
	(trees_in::post_decls): Use.
	(trees_in::post_process): Return entire vector at once.
	Change overload to take post_process_data instead of tree.
	(trees_out::write_function_def): Write needed flags from
	DECL_STRUCT_FUNCTION.
	(trees_in::read_function_def): Read them and pass to
	post_process.
	(module_state::read_cluster): Write flags into cfun.

2024-01-26  Nathaniel Shead  <nathanieloshead@gmail.com>

	PR c++/112899
	* cp-tree.h (note_variable_template_instantiation): Rename to...
	(note_vague_linkage_variable): ...this.
	* decl2.cc (note_variable_template_instantiation): Rename to...
	(note_vague_linkage_variable): ...this.
	* pt.cc (instantiate_decl): Rename usage of above function.
	* module.cc (trees_in::read_var_def): Remember pending statics
	that we stream in.

2024-01-25  Jakub Jelinek  <jakub@redhat.com>

	PR c++/113599
	* typeck2.cc (build_m_component_ref): Use convert instead of
	cp_convert for pointer conversion.

2024-01-25  Jason Merrill  <jason@redhat.com>

	PR c++/113598
	* init.cc (build_vec_init): Don't use {} for PMF.

2024-01-25  Jason Merrill  <jason@redhat.com>

	PR c++/109227
	* coroutines.cc (build_co_await): Use cxx_maybe_build_cleanup.
	(build_actor_fn, process_conditional, maybe_promote_temps)
	(morph_fn_to_coro): Likewise.
	(expand_one_await_expression): Use build_cleanup.

2024-01-25  Nathaniel Shead  <nathanieloshead@gmail.com>

	PR c++/113405
	* module.cc (set_defining_module): Track partial specialisations
	for all declarations.

2024-01-25  Nathaniel Shead  <nathanieloshead@gmail.com>

	PR c++/100707
	* name-lookup.cc (add_imported_namespace): Don't mark namespaces
	as imported.

2024-01-24  Patrick Palka  <ppalka@redhat.com>

	PR c++/113529
	* call.cc (add_operator_candidates): Propagate error_mark_node
	result after recursing to find rewritten candidates.

2024-01-23  Marek Polacek  <polacek@redhat.com>

	PR c++/113256
	PR c++/111607
	PR c++/109640
	* call.cc (do_warn_dangling_reference): Don't warn if the temporary
	is of lambda type.

2024-01-23  Nathaniel Shead  <nathanieloshead@gmail.com>

	PR c++/112820
	PR c++/102607
	* module.cc (trees_out::lang_type_bools): Write interface_only
	and interface_unknown.
	(trees_in::lang_type_bools): Read the above flags.
	(trees_in::decl_value): Reset CLASSTYPE_INTERFACE_* except for
	extern templates.
	(trees_in::read_class_def): Remove buggy extern template
	handling.

2024-01-19  Jason Merrill  <jason@redhat.com>

	PR c++/113498
	* pt.cc (decl_template_info): New fn.
	(get_template_info): Use it.

2024-01-19  Jason Merrill  <jason@redhat.com>

	PR c++/112632
	PR c++/112594
	PR c++/111357
	PR c++/104594
	PR c++/67898
	* cp-tree.h (IMPLICIT_CONV_EXPR_FORCED): New.
	* pt.cc (expand_integer_pack): Remove 111357 workaround.
	(maybe_convert_nontype_argument): Add force parm.
	(convert_template_argument): Handle alias template args
	specially.
	(tsubst_expr): Don't ignore IMPLICIT_CONV_EXPR_NONTYPE_ARG.
	* error.cc (dump_expr) [CASE_CONVERT]: Handle null optype.

2024-01-18  Marek Polacek  <polacek@redhat.com>

	PR c++/113389
	* decl.cc (grokdeclarator) <case cdk_function>: Set TREE_PURPOSE to
	NULL_TREE when emitting an error.

2024-01-17  Nathaniel Shead  <nathanieloshead@gmail.com>

	PR c++/112588
	* module.cc (trees_in::read_function_def): Don't overwrite
	arguments.

2024-01-17  Patrick Palka  <ppalka@redhat.com>

	PR c++/113242
	PR c++/99493
	* pt.cc (invalid_tparm_referent_p) <case ADDR_EXPR>: Suppress
	DECL_ARTIFICIAL rejection test for class NTTP objects.

2024-01-16  Nathaniel Shead  <nathanieloshead@gmail.com>

	PR c++/113292
	* decl2.cc (get_tls_wrapper_fn): Set DECL_CONTEXT.
	(c_parse_final_cleanups): Suppress warning for no definition of
	TLS wrapper functions in header modules.
	* module.cc (trees_out::lang_decl_vals): Write wrapped variable
	for TLS wrapper functions.
	(trees_in::lang_decl_vals): Read it.
	(trees_out::decl_value): Write TLS model for thread-local vars.
	(trees_in::decl_value): Read it for new decls. Remember to emit
	definitions of TLS wrapper functions later.

2024-01-16  Nathaniel Shead  <nathanieloshead@gmail.com>

	* name-lookup.h (enum scope_kind): Add 'sk_count'.
	* name-lookup.cc (cp_binding_level_descriptor): Add missing
	scope kinds. Add assertion that the list is up to date. Fix
	handling of explicit_spec_p.

2024-01-16  Marek Polacek  <polacek@redhat.com>

	* decl.cc (grokdeclarator) <case cdk_function>: Tweak diagnostic
	messages.

2024-01-16  Marek Polacek  <polacek@redhat.com>

	PR c++/113340
	* decl.cc (grokdeclarator) <case cdk_function>: Clear
	is_xobj_member_function in case of an error.

2024-01-16  waffl3x  <waffl3x@protonmail.com>

	PR c++/113307
	* parser.cc (cp_parser_parameter_declaration): Reject packs
	on xobj params.

2024-01-15  Marek Polacek  <polacek@redhat.com>

	PR c++/110065
	* parser.cc (cp_parser_template_type_arg): Add auto checking.

2024-01-15  Patrick Palka  <ppalka@redhat.com>

	* parser.cc (cp_parser_check_access_in_redeclaration): Don't
	check access for a partial or explicit specialization.
	* pt.cc (maybe_new_partial_specialization): Don't set TREE_PRIVATE
	or TREE_PROTECTED on the newly created partial specialization.

2024-01-15  Patrick Palka  <ppalka@redhat.com>

	PR c++/104634
	* pt.cc (maybe_new_partial_specialization): Propagate TREE_PUBLIC
	to the newly created partial specialization.

2024-01-15  Patrick Palka  <ppalka@redhat.com>

	PR c++/109899
	* init.cc (build_vec_delete_1): Assume expr_noexcept_p returns
	false in a template context.

2024-01-13  Jakub Jelinek  <jakub@redhat.com>

	* mangle.cc (write_nested_name): Mangle explicit object
	member functions with H as per
	https://github.com/itanium-cxx-abi/cxx-abi/issues/148 non-proposal.

2024-01-12  Jason Merrill  <jason@redhat.com>

	PR c++/113038
	* name-lookup.cc (lookup_elaborated_type): Look for bindings
	in the global namespace in the ABI namespace.

2024-01-12  Jason Merrill  <jason@redhat.com>

	* call.cc (reversed_match): New.
	(enum class pmatch): New enum.
	(cand_parms_match): Add match_kind parm.
	(object_parms_correspond): Add fn parms.
	(joust): Adjust.
	* class.cc (xobj_iobj_parameters_correspond): Rename to...
	(iobj_parm_corresponds_to): ...this.  Take the other
	type instead of a second function.
	(object_parms_correspond): Adjust.
	* cp-tree.h (iobj_parm_corresponds_to): Declare.

2024-01-11  Jason Merrill  <jason@redhat.com>

	PR c++/113191
	* class.cc (xobj_iobj_parameters_correspond): Add context parm.
	(object_parms_correspond): Factor out of...
	(add_method): ...here.
	* method.cc (defaulted_late_check): Use it.
	* call.cc (class_of_implicit_object): New.
	(object_parms_correspond): Overload taking two candidates.
	(cand_parms_match): Use it.
	(joust): Check reversed before comparing constraints.
	* cp-tree.h (object_parms_correspond): Declare.

2024-01-10  Tamar Christina  <tamar.christina@arm.com>

	* parser.cc (cp_parser_pragma): Initialize to false.

2024-01-09  Jason Merrill  <jason@redhat.com>

	* semantics.cc (is_object_parameter): New.
	* cp-tree.h (is_object_parameter): Declare.
	* call.cc (maybe_warn_class_memaccess): Use it.
	* search.cc (field_access_p): Use it.
	(class_of_object_parm): New.
	(field_accessor_p): Adjust for explicit object parms.

2024-01-09  Jason Merrill  <jason@redhat.com>

	* call.cc (build_over_call): Refactor handle_arg lambda.
	* class.cc (xobj_iobj_parameters_correspond): Fix FIXME.
	* method.cc (defaulted_late_check): Adjust comments.

2024-01-09  waffl3x  <waffl3x@protonmail.com>

	PR c++/102609
	PR c++/102609
	C++23 P0847R7 (deducing this) - CWG2586.
	* decl.cc (copy_fn_p): Accept xobj copy assignment functions.
	(move_signature_fn_p): Accept xobj move assignment functions.
	* method.cc (do_build_copy_assign): Handle defaulted xobj member
	functions.
	(defaulted_late_check): Comment.
	(defaultable_fn_check): Comment.

2024-01-09  waffl3x  <waffl3x@protonmail.com>

	PR c++/102609
	PR c++/102609
	C++23 P0847R7 (deducing this) - xobj lambdas.
	* lambda.cc (build_capture_proxy): Don't fold direct object types.
	* parser.cc (cp_parser_lambda_declarator_opt): Handle xobj lambdas,
	diagnostics.  Comments also updated.
	* pt.cc (tsubst_function_decl): Handle xobj lambdas.  Check object
	type of xobj lambda call operator, diagnose incorrect types.
	(tsubst_lambda_expr): Update comment.
	* semantics.cc (finish_decltype_type): Also consider by-value object
	parameter qualifications.

2024-01-09  waffl3x  <waffl3x@protonmail.com>

	PR c++/102609
	PR c++/102609
	C++23 P0847R7 (deducing this) - diagnostics.
	* class.cc (resolve_address_of_overloaded_function): Diagnostics.
	* cp-tree.h (TFF_XOBJ_FUNC): Define.
	* decl.cc (grokfndecl): Diagnostics.
	(grokdeclarator): Diagnostics.
	* error.cc (dump_aggr_type): Pass TFF_XOBJ_FUNC.
	(dump_lambda_function): Formatting for xobj lambda.
	(dump_function_decl): Pass TFF_XOBJ_FUNC.
	(dump_parameters): Formatting for xobj member functions.
	(function_category): Formatting for xobj member functions.
	* parser.cc (cp_parser_decl_specifier_seq): Diagnostics.
	(cp_parser_parameter_declaration): Diagnostics.
	* search.cc (look_for_overrides_here): Make xobj member functions
	override.
	(look_for_overrides_r): Reject an overriding xobj member function
	and diagnose it.
	* semantics.cc (finish_this_expr): Diagnostics.
	* typeck.cc (cp_build_addr_expr_1): Diagnostics.

2024-01-09  waffl3x  <waffl3x@protonmail.com>

	PR c++/102609
	PR c++/102609
	C++23 P0847R7 (deducing this) - initial functionality.
	* class.cc (xobj_iobj_parameters_correspond): New function, checks
	for corresponding object parameters between xobj and iobj member
	functions.
	(add_method): Handle object parameters of xobj member functions, use
	xobj_iobj_parameters_correspond.
	* call.cc (build_over_call): Refactor, handle xobj member functions.
	(cand_parms_match): Handle object parameters of xobj and iobj member
	functions, use xobj_iobj_parameters_correspond.
	* cp-tree.h (enum cp_decl_spec): Add ds_this, add comments.
	* decl.cc (grokfndecl): Add xobj_func_p parameter.  For xobj member
	functions, Set xobj_flag, don't set static_function flag.
	(grokdeclarator): Handle xobj member functions, tell grokfndecl.
	(grok_op_properties): Don't error for xobj operators.
	* parser.cc (cp_parser_decl_specifier_seq): Handle this specifier.
	(cp_parser_parameter_declaration): Set default argument to
	"this_identifier" for xobj parameters.
	(set_and_check_decl_spec_loc): Add "this", add comments.
	* tree.cc (build_min_non_dep_op_overload): Handle xobj operators.
	* typeck.cc (cp_build_addr_expr_1): Handle address-of xobj member
	functions.

2024-01-09  waffl3x  <waffl3x@protonmail.com>
	    Jason Merrill  <jason@redhat.com>

	PR c++/102609
	* cp-tree.h (struct lang_decl_fn): New data member.
	(DECL_NONSTATIC_MEMBER_FUNCTION_P): Poison.
	(DECL_IOBJ_MEMBER_FUNCTION_P): Define.
	(DECL_FUNCTION_XOBJ_FLAG): Define.
	(DECL_XOBJ_MEMBER_FUNCTION_P): Define.
	(DECL_OBJECT_MEMBER_FUNCTION_P): Define.
	(DECL_FUNCTION_MEMBER_P): Don't use
	DECL_NONSTATIC_MEMBER_FUNCTION_P.
	(DECL_CONST_MEMFUNC_P): Likewise.
	(DECL_VOLATILE_MEMFUNC_P): Likewise.
	(DECL_NONSTATIC_MEMBER_P): Likewise.
	* module.cc (trees_out::lang_decl_bools): Handle xobj_flag.
	(trees_in::lang_decl_bools): Handle xobj_flag.
	* call.cc (build_this_conversion)
	(add_function_candidate)
	(add_template_candidate_real)
	(add_candidates)
	(maybe_warn_class_memaccess)
	(cand_parms_match)
	(joust)
	(do_warn_dangling_reference)
	* class.cc (finalize_literal_type_property)
	(finish_struct)
	(resolve_address_of_overloaded_function)
	* constexpr.cc (is_valid_constexpr_fn)
	(cxx_bind_parameters_in_call)
	* contracts.cc (build_contract_condition_function)
	* cp-objcp-common.cc (cp_decl_dwarf_attribute)
	* cxx-pretty-print.cc (cxx_pretty_printer::postfix_expression)
	(cxx_pretty_printer::declaration_specifiers)
	(cxx_pretty_printer::direct_declarator)
	* decl.cc (cp_finish_decl)
	(grok_special_member_properties)
	(start_preparsed_function)
	(record_key_method_defined)
	* decl2.cc (cp_handle_deprecated_or_unavailable)
	* init.cc (find_uninit_fields_r)
	(build_offset_ref)
	* lambda.cc (lambda_expr_this_capture)
	(maybe_generic_this_capture)
	(nonlambda_method_basetype)
	* mangle.cc (write_nested_name)
	* method.cc (early_check_defaulted_comparison)
	(skip_artificial_parms_for)
	(num_artificial_parms_for)
	* pt.cc (is_specialization_of_friend)
	(determine_specialization)
	(copy_default_args_to_explicit_spec)
	(check_explicit_specialization)
	(tsubst_contract_attribute)
	(check_non_deducible_conversions)
	(more_specialized_fn)
	(maybe_instantiate_noexcept)
	(register_parameter_specializations)
	(value_dependent_expression_p)
	* search.cc (shared_member_p)
	(lookup_member)
	(field_access_p)
	* semantics.cc (finish_omp_declare_simd_methods)
	* tree.cc (lvalue_kind)
	* typeck.cc (invalid_nonstatic_memfn_p): Don't use
	DECL_NONSTATIC_MEMBER_FUNCTION_P.

2024-01-09  Julian Brown  <julian@codesourcery.com>

	* constexpr.cc (potential_consant_expression_1): Handle
	OMP_ARRAY_SECTION.
	* cp-tree.h (grok_omp_array_section, build_omp_array_section): Add
	prototypes.
	* decl2.cc (grok_omp_array_section): New function.
	* error.cc (dump_expr): Handle OMP_ARRAY_SECTION.
	* parser.cc (cp_parser_new): Initialize parser->omp_array_section_p.
	(cp_parser_statement_expr): Disallow array sections.
	(cp_parser_postfix_open_square_expression): Support OMP_ARRAY_SECTION
	parsing.
	(cp_parser_parenthesized_expression_list, cp_parser_lambda_expression,
	cp_parser_braced_list): Disallow array sections.
	(cp_parser_omp_var_list_no_open): Remove ALLOW_DEREF parameter, add
	MAP_LVALUE in its place.  Support generalised lvalue parsing for
	OpenMP map, to and from clauses.  Use OMP_ARRAY_SECTION
	code instead of TREE_LIST to represent OpenMP array sections.
	(cp_parser_omp_var_list): Remove ALLOW_DEREF parameter, add MAP_LVALUE.
	Pass to cp_parser_omp_var_list_no_open.
	(cp_parser_oacc_data_clause): Update call to cp_parser_omp_var_list.
	(cp_parser_omp_clause_map): Add sk_omp scope around
	cp_parser_omp_var_list_no_open call.
	* parser.h (cp_parser): Add omp_array_section_p field.
	* pt.cc (tsubst, tsubst_copy, tsubst_omp_clause_decl,
	tsubst_copy_and_build): Add OMP_ARRAY_SECTION support.
	* semantics.cc (handle_omp_array_sections_1, handle_omp_array_sections,
	cp_oacc_check_attachments, finish_omp_clauses): Use OMP_ARRAY_SECTION
	instead of TREE_LIST where appropriate.  Handle more types of map
	expression.
	* typeck.cc (build_omp_array_section): New function.

2024-01-07  Nathaniel Shead  <nathanieloshead@gmail.com>

	* module.cc (trees_out::write_var_def): Only write initializers
	in header modules.

2024-01-07  Nathaniel Shead  <nathanieloshead@gmail.com>

	PR c++/109679
	* module.cc (depset::hash::add_binding_entity): Don't skip names
	in the GMF if they've been exported with a using declaration.

2024-01-07  Nathaniel Shead  <nathanieloshead@gmail.com>

	PR c++/110808
	* parser.cc (cp_parser_module_name): Rewrite to handle
	module-names and module-partitions independently.
	(cp_parser_module_partition): New function.
	(cp_parser_module_declaration): Parse module partitions
	explicitly. Don't change state if parsing module decl failed.
	(cp_parser_import_declaration): Handle different kinds of
	import-declarations locally.

2024-01-03  Patrick Palka  <ppalka@redhat.com>

	PR c++/113064
	* call.cc (reference_binding): Still try a conversion via a
	temporary if a direct conversion was bad.

2024-01-03  Kwok Cheung Yeung  <kcy@codesourcery.com>

	* parser.cc (cp_parser_omp_clause_name): Move handling of indirect
	clause to correspond to alphabetical order.

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