[gcc.git] / gcc / cp / ChangeLog

2021-02-10  Jakub Jelinek  <jakub@redhat.com>

	PR c++/98988
	PR c++/99031
	* constexpr.c: Include cgraph.h.
	(cxx_eval_call_expression): Call varpool_node::finalize_decl on
	heap artificial vars.
	(cxx_eval_outermost_constant_expr): Remove varpool nodes for
	heap artificial vars.

2021-02-10  Nathan Sidwell  <nathan@acm.org>

	PR c++/99030
	* pt.c (tsubst_copy) [VAR_DECL]: For a DECL_LOCAL_DECL_P T is the
	answer if there's no local specialization.

2021-02-09  Nathan Sidwell  <nathan@acm.org>

	PR c++/98944
	* module.cc (module_state::is_rooted): Rename to ...
	(module_state::has_location): ... here.  Adjust callers.
	(module_state::read_partitions): Adjust validity check.
	Don't overwrite a known location.

2021-02-09  Jason Merrill  <jason@redhat.com>

	PR c++/96905
	* pt.c (mark_decl_instantiated): Exit early if consteval.

2021-02-09  Jason Merrill  <jason@redhat.com>

	PR c++/98326
	PR c++/20408
	* cp-gimplify.c (simple_empty_class_p): Don't touch an invisiref
	parm.

2021-02-09  Jason Merrill  <jason@redhat.com>

	PR c++/98994
	PR c++/97566
	* constexpr.c (cxx_eval_store_expression): Only skip empty fields in
	RECORD_TYPE.

2021-02-08  Nathan Sidwell  <nathan@acm.org>

	* decl.c (start_cleanup_fn): Push function into
	namespace.

2021-02-08  Nathan Sidwell  <nathan@acm.org>

	PR c++/98531
	* cp-tree.h (push_abi_namespace, pop_abi_namespace): Declare.
	* decl.c (push_abi_namespace, pop_abi_namespace): Moved
	from rtti.c, add default namespace arg.
	(check_redeclaration_exception_specification): Allow a lazy
	builtin's eh spec to differ from an lready-declared user
	declaration.
	(declare_global_var): Use push/pop_abi_namespace.
	(get_atexit_node): Push the fndecl into a namespace.
	* rtti.c (push_abi_namespace, pop_abi_namespace): Moved to
	decl.c.

2021-02-08  Marek Polacek  <polacek@redhat.com>

	* cp-tree.h (CLASSTYPE_TI_TEMPLATE): Fix typo.

2021-02-05  Marek Polacek  <polacek@redhat.com>

	PR c++/98947
	* call.c (build_conditional_expr_1): Don't call mark_lvalue_use
	on arg2/arg3.
	* expr.c (mark_use) <case MODIFY_EXPR>: Don't check read_p when
	issuing the -Wvolatile warning.  Only set TREE_THIS_VOLATILE if
	a warning was emitted.

2021-02-05  Marek Polacek  <polacek@redhat.com>

	PR c++/96462
	* name-lookup.c (lookup_using_decl): Hoist the destructor check.

2021-02-05  Jakub Jelinek  <jakub@redhat.com>

	PR c++/97878
	* decl.c (check_array_initializer): For structured bindings, require
	the array type to be complete.

2021-02-04  Jason Merrill  <jason@redhat.com>

	PR c++/98717
	* constraint.cc (build_concept_check_arguments): Remove assert.
	(build_concept_check): Allow empty args.

2021-02-04  Tom Greenslade (thomgree)  <thomgree@cisco.com>

	PR c++/90926
	* call.c (can_convert_array): Extend to handle all valid aggregate
	initializers of an array; including by string literals, not just by
	brace-init-list.
	(build_aggr_conv): Call can_convert_array more often, not just in
	brace-init-list case.
	* typeck2.c (array_string_literal_compatible_p): New function.
	(digest_init_r): call array_string_literal_compatible_p
	* cp-tree.h: (array_string_literal_compatible_p): Declare.

2021-02-04  Jason Merrill  <jason@redhat.com>

	PR c++/98802
	* pt.c (do_class_deduction): No aggregate guide if any_dguides_p.

2021-02-04  Jason Merrill  <jason@redhat.com>

	PR c++/95192
	* pt.c (tsubst_attribute): Handle error.
	(apply_late_template_attributes): Return false on error.
	(tsubst_function_decl): Check its return value.
	(tsubst_decl): Likewise.
	(push_template_decl): Assert current_template_parms.
	(tsubst_template_decl): Set current_template_parms.

2021-02-03  Marek Polacek  <polacek@redhat.com>

	PR c++/98951
	* call.c (struct z_candidate): Mark rewritten and reversed as const.
	(struct NonPublicField): Mark operator() as const.
	(struct NonTrivialField): Likewise.

2021-02-03  Jason Merrill  <jason@redhat.com>

	PR c++/98926
	PR c++/98570
	* pt.c (spec_hasher::equal): Set processing_template_decl.
	* Make-lang.in (check-g++-strict-gc): Add --param
	hash-table-verification-limit=10000.

2021-02-03  Marek Polacek  <polacek@redhat.com>

	PR c++/98899
	* parser.c (cp_parser_class_specifier_1): Use any possible
	DEFPARSE_INSTANTIATIONS to update DEFERRED_NOEXCEPT_PATTERN.
	(cp_parser_save_noexcept): Initialize DEFPARSE_INSTANTIATIONS.
	* pt.c (tsubst_exception_specification): Stash new_specs into
	DEFPARSE_INSTANTIATIONS.
	* tree.c (fixup_deferred_exception_variants): Use
	UNPARSED_NOEXCEPT_SPEC_P.

2021-02-02  Jason Merrill  <jason@redhat.com>

	PR c++/98929
	PR c++/96199
	* error.c (dump_expr): Ignore dummy object.
	* pt.c (tsubst_baselink): Handle dependent scope.

2021-02-01  Patrick Palka  <ppalka@redhat.com>

	PR c++/98295
	* constexpr.c (cxx_eval_array_reference): Also set
	new_ctx.object when setting new_ctx.ctor.

2021-02-01  Marek Polacek  <polacek@redhat.com>

	PR c++/98355
	* parser.c (cp_parser_has_attribute_expression): Use
	uses_template_parms instead of type_dependent_expression_p.

2021-02-01  Jason Merrill  <jason@redhat.com>

	PR c++/98570
	* cp-tree.h: Declare it.
	* pt.c (comparing_dependent_aliases): New flag.
	(template_args_equal, spec_hasher::equal): Set it.
	(dependent_alias_template_spec_p): Assert that we don't
	get non-types other than error_mark_node.
	(instantiate_alias_template): SET_TYPE_STRUCTURAL_EQUALITY
	on complex alias specializations.  Set TYPE_DEPENDENT_P here.
	(tsubst_decl): Not here.
	* module.cc (module_state::read_cluster): Set
	comparing_dependent_aliases instead of
	comparing_specializations.
	* tree.c (cp_tree_equal): Remove comparing_specializations
	module handling.
	* typeck.c (structural_comptypes): Adjust.
	(comptypes): Remove comparing_specializations handling.

2021-01-29  Nathan Sidwell  <nathan@acm.org>

	PR c++/98843
	* module.cc (module_state_config): Add num_entities field.
	(module_state::read_entities): The entity_ary span is
	already allocated.
	(module_state::write_config): Write num_entities.
	(module_state::read_config): Read num_entities.
	(module_state::write): Set config's num_entities.
	(module_state::read_initial): Allocate the entity ary
	span here.
	(module_state::read_language): Do not set entity_lwm
	here.

2021-01-29  Marek Polacek  <polacek@redhat.com>

	PR c++/96137
	* parser.c (cp_parser_class_name): If parser->scope is
	error_mark_node, return it, otherwise continue.

2021-01-28  Jakub Jelinek  <jakub@redhat.com>

	PR c++/98841
	* typeck.c (build_x_indirect_ref): For *this, return current_class_ref.

2021-01-28  Jakub Jelinek  <jakub@redhat.com>

	PR c++/33661
	PR c++/98847
	* decl.c (cp_finish_decl): For register vars with asmspec in templates
	call set_user_assembler_name and set DECL_HARD_REGISTER.
	* pt.c (tsubst_expr): When instantiating DECL_HARD_REGISTER vars,
	pass asmspec_tree to cp_finish_decl.

2021-01-28  Nathan Sidwell  <nathan@acm.org>

	PR c++/98770
	* module.cc (trees_out::decl_value): Swap is_typedef & TYPE_NAME
	check order.
	(trees_in::decl_value): Do typedef frobbing only when installing
	a new typedef, adjust is_matching_decl call.  Swap is_typedef
	& TYPE_NAME check.
	(trees_in::is_matching_decl): Add is_typedef parm. Adjust variable
	names and deal with typedef checking.

2021-01-27  Jason Merrill  <jason@redhat.com>

	PR c++/97874
	* name-lookup.c (lookup_using_decl): Clean up handling
	of dependency and inherited constructors.
	(finish_nonmember_using_decl): Handle DECL_DEPENDENT_P.
	* pt.c (tsubst_expr): Handle DECL_DEPENDENT_P.

2021-01-26  Jason Merrill  <jason@redhat.com>

	PR c++/97474
	* call.c (type_passed_as): Don't mark invisiref restrict.

2021-01-26  Jason Merrill  <jason@redhat.com>

	PR c++/97566
	PR c++/98463
	* class.c (layout_class_type): An empty field gets size 0.
	(is_empty_field): New.
	(check_bases): Check it.
	* cp-tree.h (is_empty_field): Declare it.
	* constexpr.c (cxx_eval_store_expression): Check it.
	(cx_check_missing_mem_inits): Likewise.
	* init.c (perform_member_init): Likewise.
	* typeck2.c (process_init_constructor_record): Likewise.

2021-01-25  Martin Sebor  <msebor@redhat.com>

	PR c++/98646
	* cvt.c (cp_fold_convert): Propagate TREE_NO_WARNING.

2021-01-25  Jason Merrill  <jason@redhat.com>

	PR c++/98463
	* constexpr.c (get_or_insert_ctor_field): Add check.
	(cxx_eval_store_expression): Handle discontinuity of refs.

2021-01-23  Anthony Sharp  <anthonysharp15@gmail.com>

	* call.c (complain_about_access): Altered function.
	* cp-tree.h (complain_about_access): Changed parameters of function.
	(get_parent_with_private_access): Declared new function.
	* search.c (get_parent_with_private_access): Defined new function.
	* semantics.c (enforce_access): Modified function.
	* typeck.c (complain_about_unrecognized_member): Updated function
	arguments in complain_about_access.

2021-01-23  Patrick Palka  <ppalka@redhat.com>

	PR c++/97399
	* cp-tree.h (shared_member_p): Adjust declaration.
	* parser.c (cp_parser_init_declarator): If the storage class
	specifier is sc_static, pass true for static_p to
	cp_parser_declarator.
	(cp_parser_direct_declarator): Don't do inject_this_parm when
	the declarator is a friend.
	* search.c (shared_member_p): Change return type to bool and
	adjust function body accordingly.  Return false for a dependent
	USING_DECL instead of aborting.
	* semantics.c (finish_qualified_id_expr): Rely on shared_member_p
	even when type-dependent.

2021-01-22  Marek Polacek  <polacek@redhat.com>

	PR c++/96623
	* parser.c (inject_parm_decls): Remove a redundant assignment.
	(cp_parser_class_specifier_1): Clear current_class_{ptr,ref}
	before calling inject_parm_decls.

2021-01-22  Jason Merrill  <jason@redhat.com>

	PR c++/98744
	* call.c (make_base_init_ok): Use DECL_HAS_VTT_PARM_P.

2021-01-22  Jakub Jelinek  <jakub@redhat.com>

	PR sanitizer/95693
	* init.c (build_zero_init_1): Revert the 2018-03-06 change to
	return build_zero_cst for reference types.
	* typeck2.c (process_init_constructor_record): Instead call
	build_zero_cst here during error recovery instead of build_zero_init.

2021-01-22  Marek Polacek  <polacek@redhat.com>

	PR c++/98545
	* mangle.c (write_member_name): Emit abi_warn_or_compat_version_crosses
	warnings regardless of abi_version_at_least.
	(write_expression): When the expression is a dependent name
	and an operator name, write "on" before writing its name.

2021-01-22  Marek Polacek  <polacek@redhat.com>

	PR c++/97966
	* pt.c (instantiate_class_template_1): Instantiate members
	marked with attribute used only after we're done instantiating
	the class.

2021-01-21  Patrick Palka  <ppalka@redhat.com>

	PR c++/71879
	* semantics.c (finish_decltype_type): Set up a cp_unevaluated
	sentinel at the start of the function.  Remove a now-redundant
	manual adjustment of cp_unevaluated_operand.

2021-01-21  Nathan Sidwell  <nathan@acm.org>

	PR c++/98624
	* module.cc (depset::hash::find_dependencies): Add
	module arg.
	(trees_out::core_vals): Check state before calling
	write_location.
	(sort_cluster, module_state::write): Adjust
	find_dependencies call.

2021-01-21  Jakub Jelinek  <jakub@redhat.com>

	PR c++/98672
	* constexpr.c (check_for_return_continue_data): Add break_stmt member.
	(check_for_return_continue): Also look for BREAK_STMT.  Handle
	SWITCH_STMT by ignoring break_stmt from its body.
	(potential_constant_expression_1) <case FOR_STMT>,
	<case WHILE_STMT>: If the condition isn't constant true, check if
	the loop body can contain a return stmt.
	<case SWITCH_STMT>: Adjust check_for_return_continue_data initializer.
	<case IF_STMT>: If recursion with tf_none is successful,
	merge *jump_target from the branches - returns with highest priority,
	breaks or continues lower.  If then branch is potentially constant and
	doesn't return, check the else branch if it could return, break or
	continue.

2021-01-21  Nathan Sidwell  <nathan@acm.org>

	PR c++/98530
	* name-lookup.c (lookup_class_binding): Rearrange a stat-hack.

2021-01-20  Nathan Sidwell  <nathan@acm.org>

	* module.cc (bytes_in::i, bytes_in::wi): Avoid left shift of
	signed type.

2021-01-20  Patrick Palka  <ppalka@redhat.com>

	PR c++/95434
	* pt.c (tsubst) <case TEMPLATE_TYPE_PARM>: If tsubsting
	CLASS_PLACEHOLDER_TEMPLATE yields a TEMPLATE_TEMPLATE_PARM,
	adjust to its TEMPLATE_TEMPLATE_PARM_TEMPLATE_DECL.

2021-01-20  Patrick Palka  <ppalka@redhat.com>

	PR c++/82613
	* parser.c (cp_parser_class_head): Defer access checking when
	parsing the base-clause until all bases are seen and attached
	to the class type.
	* pt.c (instantiate_class_template): Likewise when substituting
	into dependent bases.

2021-01-20  Jakub Jelinek  <jakub@redhat.com>

	PR c++/98742
	* semantics.c (finish_omp_clauses) <case OMP_CLAUSE_DETACH>: If
	error_operand_p, remove clause without further checking.  Check
	for non-NULL TYPE_NAME.

2021-01-19  Marek Polacek  <polacek@redhat.com>

	PR c++/98659
	* pt.c (maybe_instantiate_noexcept): Return false if FN is
	error_mark_node.

2021-01-19  Marek Polacek  <polacek@redhat.com>

	PR c++/98687
	* name-lookup.c (push_using_decl_bindings): New, broken out of...
	(finish_nonmember_using_decl): ...here.
	* name-lookup.h (push_using_decl_bindings): Update declaration.
	* pt.c (tsubst_expr): Update the call to push_using_decl_bindings.

2021-01-19  Patrick Palka  <ppalka@redhat.com>

	PR c++/41437
	PR c++/58993
	* search.c (friend_accessible_p): If scope is a hidden friend
	defined inside a dependent class, consider access from the
	class.
	* parser.c (cp_parser_late_parsing_for_member): Don't push a
	dk_no_check access state.

2021-01-19  Marek Polacek  <polacek@redhat.com>

	PR c++/98333
	* parser.c (cp_parser_class_specifier_1): Perform late-parsing
	of NSDMIs before late-parsing of noexcept-specifiers.

2021-01-19  Nathan Sidwell  <nathan@acm.org>

	* module.cc (identifier): Merge overloads.

2021-01-19  Nathan Sidwell  <nathan@acm.org>

	PR c++/98624
	* module.cc (trees_out::write_location): Make static.

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

	* parser.c (cp_parser_omp_clause_detach): New.
	(cp_parser_omp_all_clauses): Handle PRAGMA_OMP_CLAUSE_DETACH.
	(OMP_TASK_CLAUSE_MASK): Add mask for PRAGMA_OMP_CLAUSE_DETACH.
	* pt.c (tsubst_omp_clauses): Handle OMP_CLAUSE_DETACH clause.
	* semantics.c (finish_omp_clauses): Handle OMP_CLAUSE_DETACH clause.
	Prevent use of detach with mergeable and overriding the	data sharing
	mode of the event handle.

2021-01-15  Nathan Sidwell  <nathan@acm.org>

	PR c++/98538
	* tree.c (cp_build_qualified_type_real): Propagate an array's
	dependentness to the copy, if known.

2021-01-15  Jason Merrill  <jason@redhat.com>

	PR c++/98642
	* call.c (unsafe_return_slot_p): Return int.
	(init_by_return_slot_p): Split out from...
	(unsafe_copy_elision_p): ...here.
	(unsafe_copy_elision_p_opt): New name for old meaning.
	(build_over_call): Adjust.
	(make_safe_copy_elision): New.
	* typeck2.c (split_nonconstant_init_1): Elide copy from safe
	list-initialization.
	* cp-tree.h: Adjust.

2021-01-15  Jason Merrill  <jason@redhat.com>

	* call.c (base_ctor_for, make_base_init_ok): New.
	(build_over_call): Use make_base_init_ok.

2021-01-15  Jason Merrill  <jason@redhat.com>

	PR c++/63707
	* tree.c (build_vec_init_expr): Don't call build_vec_init_elt
	if we got a CONSTRUCTOR.

2021-01-15  Nathan Sidwell  <nathan@acm.org>

	PR c++/98591
	* lang-specs.h: Fix handling of -fmodule-only with -fsyntax-only.

2021-01-14  Jason Merrill  <jason@redhat.com>

	* typeck2.c (process_init_constructor_record): Use fldtype
	variable consistently.

2021-01-14  Nathan Sidwell  <nathan@acm.org>

	PR c++/98372
	* tree.c (cp_tree_equal): Correct map_context logic.

2021-01-13  Marek Polacek  <polacek@redhat.com>

	PR c++/98231
	* name-lookup.c (push_using_decl_bindings): New.
	* name-lookup.h (push_using_decl_bindings): Declare.
	* pt.c (tsubst_expr): Call push_using_decl_bindings.

2021-01-13  Nathan Sidwell  <nathan@acm.org>

	PR c++/98626
	* module.cc (module_add_import_initializers):  Pass a
	zero-element argument vector.

2021-01-12  Patrick Palka  <ppalka@redhat.com>

	PR c++/98611
	* tree.c (cp_walk_subtrees) <case TEMPLATE_TYPE_PARM>: Visit
	the template of a CTAD placeholder.

2021-01-12  Marek Polacek  <polacek@redhat.com>

	PR c++/98620
	* typeck2.c (process_init_constructor_record): Don't emit
	-Wmissing-field-initializers warnings in unevaluated contexts.

2021-01-11  Jakub Jelinek  <jakub@redhat.com>

	PR c++/98481
	* class.c (find_abi_tags_r): Set *walk_subtrees to 2 instead of 1
	for types.
	(mark_abi_tags_r): Likewise.
	* decl2.c (min_vis_r): Likewise.
	* tree.c (cp_walk_subtrees): If *walk_subtrees_p is 2, look through
	typedefs.

2021-01-08  Patrick Palka  <ppalka@redhat.com>

	PR c++/98551
	* constexpr.c (cxx_eval_call_expression): Check CLASS_TYPE_P
	instead of AGGREGATE_TYPE_P before calling replace_result_decl.

2021-01-08  Patrick Palka  <ppalka@redhat.com>

	PR c++/98515
	* semantics.c (check_accessibility_of_qualified_id): Punt if
	we're checking access of a scoped non-static member inside a
	class template.

2021-01-07  Jakub Jelinek  <jakub@redhat.com>

	PR c++/98329
	* pt.c (tsubst_copy) <case BIT_CAST_EXPR>: Don't call
	cp_build_bit_cast here, instead just build_min a BIT_CAST_EXPR and set
	its location.
	(tsubst_copy_and_build): Handle BIT_CAST_EXPR.

2021-01-07  Marek Polacek  <polacek@redhat.com>

	PR c++/98441
	* decl.c (grokdeclarator): Move the !funcdecl_p check inside the
	!late_return_type block.

2021-01-07  Jason Merrill  <jason@redhat.com>

	* constexpr.c (cxx_bind_parameters_in_call): Add comment.
	(cxx_eval_store_expression): Add comment.

2021-01-07  Jason Merrill  <jason@redhat.com>

	* call.c (has_next): Factor out from...
	(next_conversion): ...here.
	(strip_standard_conversion): And here.
	(is_subseq): And here.
	(build_conv): Check it.
	(standard_conversion): Don't call build_conv
	for ck_identity.

2021-01-06  Martin Sebor  <msebor@redhat.com>

	PR c++/95768
	* error.c (dump_expr): Call c_pretty_printer::unary_expression.

2021-01-05  Patrick Palka  <ppalka@redhat.com>

	* pt.c (unify) <case TEMPLATE_PARM_INDEX>: After walking into
	the type of the NTTP, substitute into the type again.  If the
	type is still dependent, don't unify the NTTP.

2021-01-05  Jakub Jelinek  <jakub@redhat.com>

	* Make-lang.in (cc1plus-checksum, cc1plus$(exeext): Add
	$(CODYLIB) after $(BACKEND).

2021-01-05  Jakub Jelinek  <jakub@redhat.com>

	PR c++/98469
	* constexpr.c (cxx_eval_constant_expression) <case BIT_CAST_EXPR>:
	Punt if lval is true.
	* semantics.c (cp_build_bit_cast): Call get_target_expr_sfinae on
	the result if it has a class type.

2021-01-05  Marek Polacek  <polacek@redhat.com>

	PR c++/82099
	* pt.c (resolve_overloaded_unification): Call
	maybe_instantiate_noexcept after instantiating the function
	decl.

2021-01-05  Nathan Sidwell  <nathan@acm.org>

	* parser.c (cp_parser_module_declaration): Alter diagnostic
	text to say where is permissable.

2021-01-05  Rainer Orth  <ro@CeBiTec.Uni-Bielefeld.DE>

	PR c++/98316
	* Make-lang.in (cc1plus$(exeext)): Add $(CODYLIB), $(NETLIBS).

2021-01-02  Jan Hubicka  <jh@suse.cz>

	* cp-tree.h (cp_tree_c_finish_parsing): Declare.
	* decl2.c (c_parse_final_cleanups): Call cp_tree_c_finish_parsing.
	* tree.c (cp_tree_c_finish_parsing): New function.

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

	* ChangeLog-2020: Rotate ChangeLog.  New file.

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