path: root/gcc/cp/ChangeLog

2019-12-19  Jason Merrill  <jason@redhat.com>

	PR c++/66139 - EH cleanups for partially constructed aggregates.
	PR c++/57510
	* cp-gimplify.c (cp_gimplify_init_expr): Use split_nonconstant_init.
	* typeck2.c (split_nonconstant_init): Handle non-variable dest.
	(split_nonconstant_init_1): Clear TREE_SIDE_EFFECTS.
	* tree.c (is_local_temp): New.

2019-12-18  Jason Merrill  <jason@redhat.com>

	PR c++/91165 follow-on tweak
	* constexpr.c (cxx_eval_call_expression): Use
	unshare_expr_without_location.

2019-12-19  Julian Brown  <julian@codesourcery.com>
	    Maciej W. Rozycki  <macro@codesourcery.com>
	    Tobias Burnus  <tobias@codesourcery.com>
	    Thomas Schwinge  <thomas@codesourcery.com>

	* parser.c (cp_parser_omp_clause_name): Support no_create.
	(cp_parser_oacc_data_clause): Likewise.
	(cp_parser_oacc_all_clauses): Likewise.
	(OACC_DATA_CLAUSE_MASK, OACC_KERNELS_CLAUSE_MASK)
	(OACC_PARALLEL_CLAUSE_MASK): Add PRAGMA_OACC_CLAUSE_NO_CREATE.
	* semantics.c (handle_omp_array_sections): Support no_create.

2019-12-18  Paolo Carlini  <paolo.carlini@oracle.com>

	* typeck.c (cxx_sizeof_or_alignof_type): Add location_t parameter
	and use it throughout.
	(cxx_sizeof_expr): Likewise.
	(cxx_alignof_expr): Likewise.
	(cxx_sizeof_or_alignof_expr): Likewise.
	(cxx_alignas_expr): Update call.
	* decl.c (fold_sizeof_expr): Likewise.
	* pt.c (tsubst_copy): Likewise.
	(tsubst_copy_and_build): Likewise.
	* except.c (build_throw): Add location_t parameter and use it.
	(expand_end_catch_block): Update call.
	* parser.c (cp_parser_unary_expression): Update
	cxx_sizeof_or_alignof_type and cxx_sizeof_or_alignof_expr calls,
	pass the compound location.
	(cp_parser_throw_expression): Likewise pass the combined location
	to build_throw.
	* cp-tree.h: Update declarations.

	* semantics.c (finish_handler_parms): Use DECL_SOURCE_LOCATION.
	* decl2.c (check_classfn): Likewise.

	* except.c (is_admissible_throw_operand_or_catch_parameter):
	Exploit cp_expr_loc_or_input_loc in one place.

	* except.c (create_try_catch_expr): Remove, unused.

2019-12-17  Jason Merrill  <jason@redhat.com>

	PR c++/12333 - X::~X() with implicit this->.
	* parser.c (cp_parser_lookup_name): Use lookup_destructor.
	* typeck.c (lookup_destructor): No longer static.

2019-12-17  Martin Sebor  <msebor@redhat.com>

	PR c++/61339
	* parser.c (cp_parser_maybe_warn_enum_key): New function.
	(class_decl_loc_t): New class.
	(cp_parser_elaborated_type_specifier): Call
	cp_parser_maybe_warn_enum_key.
	(cp_parser_class_head): Call cp_parser_check_class_key.
	(cp_parser_check_class_key): Add arguments.  Call class_decl_loc_t::add.
	(c_parse_file): Call class_decl_loc_t::diag_mismatched_tags.

2019-12-17  Jason Merrill  <jason@redhat.com>

	PR c++/79592 - missing explanation of invalid constexpr.
	* constexpr.c (register_constexpr_fundef): Do store the body of a
	template instantiation that is not potentially constant.
	(explain_invalid_constexpr_fn): Look it up.
	(cxx_eval_call_expression): Check fundef->result.

2019-12-17  Jason Merrill  <jason@redhat.com>

	PR c++/92576 - redeclaration of variable template.
	* decl.c (redeclaration_error_message): Recurse for variable
	templates.

2019-12-17  Jason Merrill  <jason@redhat.com>

	* name-lookup.c (get_std_name_hint): Add std::byte.

2019-12-17  Jakub Jelinek  <jakub@redhat.com>

	PR c++/59655
	* pt.c (push_tinst_level_loc): If limit_bad_template_recursion,
	set TREE_NO_WARNING on tldcl.
	* decl2.c (no_linkage_error): Treat templates with TREE_NO_WARNING
	as defined during error recovery.

2019-12-13  Jason Merrill  <jason@redhat.com>

	PR c++/91165 - verify_gimple ICE with cached constexpr.
	* constexpr.c (cxx_bind_parameters_in_call): Don't unshare.
	(cxx_eval_call_expression): Unshare all args if we're caching.

2019-12-12  Jason Merrill  <jason@redhat.com>

	PR c++/92496 - ICE with <=> and no #include <compare>.
	* typeck.c (cp_build_binary_op): Handle error from spaceship_type.

2019-12-11  David Malcolm  <dmalcolm@redhat.com>

	* cxx-pretty-print.c (cxx_pretty_printer::clone): New vfunc
	implementation.
	* cxx-pretty-print.h (cxx_pretty_printer::clone): New vfunc decl.
	* error.c (cxx_format_postprocessor::clone): New vfunc.

2019-12-11  Jakub Jelinek  <jakub@redhat.com>

	PR c++/92869
	* class.c (finish_struct): For C++17 and earlier, check
	type_has_user_provided_or_explicit_constructor rather than
	TYPE_HAS_USER_CONSTRUCTOR whether to set CLASSTYPE_NON_AGGREGATE.

2019-12-11  Marek Polacek  <polacek@redhat.com>

	PR c++/92878 - Parenthesized init of aggregates in new-expression.
	* init.c (build_new_1): Handle parenthesized initialization of
	aggregates in new-expression.

2019-12-11  Jason Merrill  <jason@redhat.com>

	PR c++/92105 - decltype(decltype) error cascade.
	* parser.c (cp_parser_decltype_expr): Don't tentative_firewall here.
	(cp_parser_decltype): Do it here.  Remember a non-tentative error.

	PR c++/57082 - new X{} and private destructor.
	* init.c (build_new_1): Also pass tf_no_cleanup to
	build_special_member_call.

	PR c++/92774 - ICE with implicitly deleted operator<=>.
	* method.c (comp_info::~comp_info): Factor out of...
	(build_comparison_op): Here.  Handle error return from build_new_op.

	PR c++/92859 - ADL and bit-field.
	* name-lookup.c: Use unlowered_expr_type.

	PR c++/92446 - deduction of class NTTP.
	* pt.c (deducible_expression): Look through VIEW_CONVERT_EXPR.

2019-12-10  Jason Merrill  <jason@redhat.com>

	PR c++/92847 - C++20 comparison ambiguity with class template.
	* call.c (cand_parms_match): Handle all templated functions.

	Fix C++20 structural type vs. private base.
	* class.c (build_base_field_1): Take access parameter.
	(build_base_field): Likewise.
	(build_base_fields, layout_virtual_bases): Pass it.
	* tree.c (structural_type_p): Improve private base diagnostic.

	PR c++/92560 - ICE with decltype and rewritten operator.
	* call.c (build_new_op_1): Clear tf_decltype on inner call.

2019-12-09  David Malcolm  <dmalcolm@redhat.com>

	* error.c (range_label_for_type_mismatch::get_text): Replace
	label_text ctor calls with label_text::borrow.

2019-12-09  Paolo Carlini  <paolo.carlini@oracle.com>

	* typeck.c (check_for_casting_away_constness): Add location_t
	parameter and use it.
	(maybe_warn_about_useless_cast): Likewise.
	(maybe_warn_about_cast_ignoring_quals): Likewise.
	(build_static_cast_1): Likewise.
	(build_static_cast): Likewise; sets the location of the returned tree.
	(build_reinterpret_cast_1): Likewise.
	(build_reinterpret_cast): Likewise; sets the location of the returned
	tree.
	(build_const_cast_1): Likewise.
	(build_const_cast): Likewise; sets the location of the returned tree.
	(cp_build_c_cast): Likewise.
	(build_c_cast): Adjust.
	(build_ptrmemfunc): Adjust calls.
	(cp_build_unary_op): Pass the location to invert_truthvalue_loc.
	* rtti.c (build_dynamic_cast_1): Add location_t parameter and
	use it.
	(build_dynamic_cast): Likewise.
	* cp-tree.h: Adjust declarations.
	* parser.c (cp_parser_postfix_expression): Pass cp_cast_loc to
	the various build_*_cast functions.
	(get_cast_suggestion): Adjust calls.
	(cp_parser_builtin_offsetof): Likewise.
	* decl.c (reshape_init): Adjust call.
	* method.c (forward_parm): Likewise.
	(build_comparison_op): Likewise.
	* pt.c (tsubst_copy_and_build): Likewise.
	* semantics.c (finish_omp_reduction_clause): Likewise.
	(cp_omp_finish_iterators): Likewise.
	* tree.c (cp_stabilize_reference): Likewise.
	(move): Likewise.
	* typeck2.c (build_functional_cast): Likewise.

	* typeck2.c (build_functional_cast_1): New.
	(build_functional_cast_1): Calls the latter and sets the location
	of the returned tree.

2019-12-08  Jakub Jelinek  <jakub@redhat.com>

	* cvt.c (maybe_warn_nodiscard): Add workaround for GCC 3.4-4.4 - cast
	msg to (const char *) in conditional expressions.  Formatting fixes.

2019-12-07  Jason Merrill  <jason@redhat.com>
	    Jakub Jelinek  <jakub@redhat.com>

	PR c++/92831
	* call.c (build_conditional_expr_1): For ?: with omitted middle
	operand use cp_stabilize_reference if arg1 is glvalue_p rather than
	just if it is lvalue_p.

2019-12-06  Jakub Jelinek  <jakub@redhat.com>

	* parser.c (cp_parser_diagnose_invalid_type_name): Mention
	that concept is also available with -std=c++2a.

	PR c++/92831 - CWG 1299, not extending temporary lifetime for ?:
	* cp-tree.h (extend_ref_init_temps): Add a new argument with NULL
	default arg.
	* call.c (set_up_extended_ref_temp): Add COND_GUARD argument, pass it
	down to extend_ref_init_temps.  Before pushing cleanup, if COND_GUARD
	is non-NULL, create a bool temporary if needed, initialize to false
	and guard the cleanup with the temporary being true.
	(extend_ref_init_temps_1): Add COND_GUARD argument, pass it down
	to recursive calls and set_up_extended_ref_temp.  Handle COND_EXPR.
	(extend_ref_init_temps): Add COND_GUARD argument, pass it down to
	recursive calls and to extend_ref_init_temps_1.

2019-12-06  Richard Sandiford  <richard.sandiford@arm.com>

	* decl.c (start_decl_1): Use verify_type_context to check whether
	the target allows variables of a particular type to have static
	or thread-local storage duration.
	(check_array_initializer): Use verify_type_context to check whether
	the target allows a particular type to be used as an array element.
	(create_array_type_for_decl): Likewise.
	(cp_finish_decl): Use verify_type_context to check whether
	the target allows static member variables of a particular type.
	(grokdeclarator): Likewise.  Also use verify_type_context to check
	whether the target allows non-static member variables of a particular
	type.
	* except.c: Include target.h.
	(is_admissible_throw_operand_or_catch_parameter): Use
	verify_type_context to check whether the target allows particular
	types to be thrown and caught.
	* typeck2.c (add_exception_specifier): Likewise.
	* init.c (build_new_1): Use verify_type_context to check whether
	the target allows particular types to be dynamically allocated.
	(build_vec_delete_1, build_delete): Use verify_type_context to check
	whether the target allows particular types to be deleted.
	* lambda.c (add_capture): Use verify_type_context to check
	whether the target allows particular types to be captured by copy.
	* pt.c: Include target.h.
	(instantiate_class_template_1): Use verify_type_context to check
	whether the target allows non-static member variables of a particular
	type.
	* typeck.c (cxx_alignof_expr): Use verify_type_context to check
	whether the target allows the alignment of a particular type
	to be measured.
	(pointer_diff, cp_build_unary_op): Use verify_type_context to check
	whether the target allows arithmetic involving pointers to particular
	types.

2019-12-05  Marek Polacek  <polacek@redhat.com>
	    Jakub Jelinek  <jakub@redhat.com>

	PR c++/91353 - P1331R2: Allow trivial default init in constexpr contexts.
	* class.c (trivial_default_constructor_is_constexpr): Return true in
	C++20.
	* constexpr.c (cx_check_missing_mem_inits): Allow missing field
	initializers in C++20.
	(cxx_eval_call_expression): Don't clear CONSTRUCTOR_NO_CLEARING for
	constexpr constructors in C++20.
	(reduced_constant_expression_p): Don't set FIELD for union and array
	types.  Skip empty class fields without initializers.
	* decl.c (check_for_uninitialized_const_var): Permit trivial default
	initialization in constexpr.
	(next_initializable_field): Don't skip vptr fields.
	* method.c (walk_field_subobs): Still consider a constructor that
	doesn't initialize all the members constexpr.

2019-12-05  Marek Polacek  <polacek@redhat.com>

	PR c++/92271 - make __is_same alias for __is_same_as.
	* cxx-pretty-print.c (pp_cxx_trait_expression) <case CPTK_IS_SAME_AS>:
	Print "__is_same".

2019-12-05  David Edelsohn  <dje.gcc@gmail.com>

	* cp-gimplify.c: Include memmodel.h.

2019-12-05  Paolo Carlini  <paolo.carlini@oracle.com>

	* typeck2.c (build_functional_cast): Add location_t parameter
	and use it.
	* cp-tree.h: Update declaration.
	* parser.c (cp_parser_functional_cast): Adjust call.
	* call.c (build_op_delete_call): Likewise.
	(build_new_method_call_1): Likewise.
	* decl.c (check_initializer): Likewise.
	* pt.c (tsubst_copy_and_build): Likewise.
	* semantics.c (finish_compound_literal): Likewise.

2019-12-04  David Edelsohn  <dje.gcc@gmail.com>

	* cp-gimplify.c: Include tm_p.h.

2019-12-04  Marek Polacek  <polacek@redhat.com>

	* parser.c (enum primary_constraint_error): Remove stray comma.

2019-12-04  Richard Sandiford  <richard.sandiford@arm.com>

	* cp-tree.h (CP_AGGREGATE_TYPE_P): Check for gnu_vector_type_p
	instead of VECTOR_TYPE.
	* call.c (build_conditional_expr_1): Restrict vector handling
	to vectors that satisfy gnu_vector_type_p.
	* cvt.c (ocp_convert): Only allow vectors to be converted
	to bool if they satisfy gnu_vector_type_p.
	(build_expr_type_conversion): Only allow conversions from
	vectors if they satisfy gnu_vector_type_p.
	* typeck.c (cp_build_binary_op): Only allow binary operators to be
	applied to vectors if they satisfy gnu_vector_type_p.
	(cp_build_unary_op): Likewise unary operators.
	(build_reinterpret_cast_1):

2019-12-03  Jakub Jelinek  <jakub@redhat.com>

	* cp-tree.h (enum cp_tree_index): Add CPTI_SOURCE_LOCATION_IMPL.
	(source_location_impl): Define.
	(enum cp_built_in_function): Add CP_BUILT_IN_SOURCE_LOCATION.
	(fold_builtin_source_location): Declare.
	* cp-gimplify.c: Include output.h, file-prefix-map.h and cgraph.h.
	(cp_gimplify_expr, cp_fold): Handle CP_BUILT_IN_SOURCE_LOCATION.
	Formatting fix.
	(get_source_location_impl_type): New function.
	(struct source_location_table_entry,
	struct source_location_table_entry_hash): New types.
	(source_location_table, source_location_id): New variables.
	(fold_builtin_source_location): New function.
	* constexpr.c (cxx_eval_builtin_function_call): Handle
	CP_BUILT_IN_SOURCE_LOCATION.
	* tree.c (builtin_valid_in_constant_expr_p): Likewise.  Formatting
	fix.
	* decl.c (cxx_init_decl_processing): Register
	__builtin_source_location.
	* name-lookup.c (get_std_name_hint): Add source_location entry.

2019-12-03  Paolo Carlini  <paolo.carlini@oracle.com>

	* typeck.c (cp_build_addr_expr_1): Use the cp_expr_loc_or_input_loc
	location in a few additional diagnostics; tidy.
	(check_return_expr): Likewise.

	* typeck.c (cp_build_addr_expr_1): Use tree_strip_any_location_wrapper
	for the address of main pedwarn.

2019-12-03  Jakub Jelinek  <jakub@redhat.com>

	PR c++/91369
	* constexpr.c (struct constexpr_global_ctx): Add cleanups member,
	initialize it in the ctor.
	(cxx_eval_constant_expression) <case TARGET_EXPR>: If TARGET_EXPR_SLOT
	is already in the values hash_map, don't evaluate it again.  Put
	TARGET_EXPR_SLOT into hash_map even if not lval, and push it into
	save_exprs too.  If there is TARGET_EXPR_CLEANUP and not
	CLEANUP_EH_ONLY, push the cleanup to cleanups vector.
	<case CLEANUP_POINT_EXPR>: Save outer cleanups, set cleanups to
	local auto_vec, after evaluating the body evaluate cleanups and
	restore previous cleanups.
	<case TRY_CATCH_EXPR>: Don't crash if the first operand is NULL_TREE.
	(cxx_eval_outermost_constant_expr): Set cleanups to local auto_vec,
	after evaluating the expression evaluate cleanups.

2019-12-03  Marek Polacek  <polacek@redhat.com>

	PR c++/91363 - P0960R3: Parenthesized initialization of aggregates.
	* call.c (build_new_method_call_1): Handle parenthesized initialization
	of aggregates by building up a CONSTRUCTOR.
	(extend_ref_init_temps): Do nothing for CONSTRUCTOR_IS_PAREN_INIT.
	* cp-tree.h (CONSTRUCTOR_IS_PAREN_INIT, LOOKUP_AGGREGATE_PAREN_INIT):
	Define.
	* decl.c (grok_reference_init): Handle aggregate initialization from
	a parenthesized list of values.
	(reshape_init): Do nothing for CONSTRUCTOR_IS_PAREN_INIT.
	(check_initializer): Handle initialization of an array from a
	parenthesized list of values.  Use NULL_TREE instead of NULL.
	* tree.c (build_cplus_new): Handle BRACE_ENCLOSED_INITIALIZER_P.
	* typeck2.c (digest_init_r): Set LOOKUP_AGGREGATE_PAREN_INIT if it
	receives a CONSTRUCTOR with CONSTRUCTOR_IS_PAREN_INIT set.  Allow
	narrowing when LOOKUP_AGGREGATE_PAREN_INIT.
	(massage_init_elt): Don't lose LOOKUP_AGGREGATE_PAREN_INIT when passing
	flags to digest_init_r.

2019-12-03  Jakub Jelinek  <jakub@redhat.com>

	PR c++/92732
	* typeck2.c (digest_nsdmi_init): For bitfields, use
	DECL_BIT_FIELD_TYPE instead of TREE_TYPE.

2019-12-03  Jason Merrill  <jason@redhat.com>
	    Jakub Jelinek  <jakub@redhat.com>

	PR c++/92705
	* call.c (strip_standard_conversion): New function.
	(build_new_op_1): Use it for user_conv_p.
	(compare_ics): Likewise.
	(source_type): Likewise.

2019-12-03  Jakub Jelinek  <jakub@redhat.com>

	PR c++/92695
	* constexpr.c (cxx_bind_parameters_in_call): For virtual calls,
	adjust the first argument to point to the derived object rather
	than its base.

2019-12-02  Jakub Jelinek  <jakub@redhat.com>

	PR c++/92695
	* constexpr.c (cxx_eval_constant_expression) <case OBJ_TYPE_REF>: Use
	STRIP_NOPS before checking for ADDR_EXPR.

2019-11-29  Jakub Jelinek  <jakub@redhat.com>

	PR c++/60228
	* parser.c (cp_parser_omp_declare_reduction_exprs): If
	processing_template_decl, wrap the combiner or initializer
	into EXPR_STMT.
	* decl.c (start_preparsed_function): Don't start a lambda scope
	for DECL_OMP_DECLARE_REDUCTION_P functions.
	(finish_function): Don't finish a lambda scope for
	DECL_OMP_DECLARE_REDUCTION_P functions, nor cp_fold_function
	them nor cp_genericize them.
	* mangle.c (decl_mangling_context): Look through
	DECL_OMP_DECLARE_REDUCTION_P functions.
	* semantics.c (expand_or_defer_fn_1): For DECL_OMP_DECLARE_REDUCTION_P
	functions, use tentative linkage, don't keep their bodies with
	-fkeep-inline-functions and return false at the end.

2019-11-28  Jakub Jelinek  <jakub@redhat.com>

	PR c++/92695
	* decl2.c (mark_used): Don't call note_vague_linkage_fn for pure
	virtual functions, even if they are declared inline.

2019-11-16  Jason Merrill  <jason@redhat.com>

	Implement P1814R0, CTAD for alias templates.
	* pt.c (rewrite_tparm_list): Factor out of build_deduction_guide.
	(maybe_aggr_guide): Check for copy-init here.
	(alias_ctad_tweaks, deduction_guides_for): New.
	(ctor_deduction_guides_for): Factor out of do_class_deduction.
	(ctad_template_p): New.
	* parser.c (cp_parser_simple_type_specifier): Use it.
	* constraint.cc (append_constraint): New.

2019-11-16  Jason Merrill  <jason@redhat.com>

	* cxx-pretty-print.c (pp_cxx_unqualified_id): Handle alias
	template-id.
	* pt.c (complex_alias_template_p): True if constraints.
	(get_underlying_template, tsubst): Check alias constraints.
	(push_template_decl_real): Set alias constraints here.
	* parser.c (cp_parser_alias_declaration): Not here.
	* constraint.cc (get_constraints): Take const_tree.

2019-11-12  Jason Merrill  <jason@redhat.com>

	PR c++/92206 - ICE with typedef to dependent alias.
	* pt.c (dependent_alias_template_spec_p)
	(alias_template_specialization_p): Add transparent_typedefs
	parameter.
	(iterative_hash_template_arg, any_template_parm_r)
	(primary_template_specialization_p, tsubst, dependent_type_p_r):
	Adjust.
	* decl.c (check_elaborated_type_specifier): Adjust.
	* error.c (dump_template_bindings, dump_aggr_type): Adjust.

2019-11-27  Andrew Sutton  <asutton@lock3software.com>

	PR c++/92236
	Defer evaluation of concept checks so that static assertions can
	emit more detailed diagnostics.
	* constexpr.c (cxx_eval_call_expression): Handle concept checks.
	(cxx_eval_constant_expression): Diagnose misuse of function concepts
	as template-id expressions. Follow the usual return path for results.
	(cxx_eval_outermost_constant_expr): Avoid calling
	cp_get_callee_fndecl_nofold for function concepts.
	* constraint.cc (build_function_check): Fully type the concept check
	so that we don't ICE in conversions.
	* cp-gimplify.c (cp_genericize_r) [CALL_EXPR]: Handle concept checks.
	[TEMPLATE_ID_EXPR] Likewise.
	* cvt.c (convert_to_void): Always evaluate concept checks so we don't
	accidentally ignore them. Substitution during satisfaction can make
	a program ill-formed (example in g++.dg/cpp2a/concepts6.C).
	* pt.c (tsubst_copy_and_build): [CALL_EXPR]: Don't evaluate concepts.
	[TEMPLATE_ID_EXPR]: Likewise.
	* semantics.c (finish_call_expr): Don't evaluate concepts.
	(finish_id_expression_1): Likewise.
	(finish_static_assert): Preserve the original condition so we can
	diagnose concept errors when a check returns false.

2019-11-27  Andrew Sutton  <asutton@lock3software.com>

	PR c++/92439
	Improve quality of diagnostics for subexpressions that need parens.
	* parser.c (cp_parser_requires_clause_opt): Add a flag to indicate
	when parsing a requires-clause before lambda parameters, and...
	(cp_parser_lambda_declarator_opt): ... use that here ...
	(cp_parser_type_parameter): ... and here ...
	(cp_parser_late_return_type_opt): ... and here ...
	(cp_parser_explicit_template_declaration): ... and here.
	(cp_parser_diagnose_ungrouped_constraint_plain): Adjust the message
	because this can apply to subexpressions that are not immediately
	after a requires-clause.
	(cp_parser_diagnose_ungrouped_constraint_rich): Likewise.
	(primary_constraint_error): New.
	(cp_parser_constraint_requires_parens): New.
	(cp_parser_unary_constraint_requires_parens): New.
	(cp_parser_constraint_primary_expression): Check for unary expressions
	before parsing the primary expression. Also check for binary and
	postfix operators after a successful parse of the primary expression.
	Force a re-parse if the result would form a lower-precedence string.
	(cp_parser_constraint_logical_and_expression): Propagate lambda flag;
	move checks for ill-formed constraints into the constraint primary
	expression.
	(cp_parser_constraint_logical_or_expression): Likewise.
	(cp_parser_requires_clause_expression): Propagate lambda flag.

2019-11-27  Andrew Sutton  <asutton@lock3software.com>

	PR c++/88395
	* constraint.cc (satisfy_declaration_constraints): Push tinst levels
	around satisfaction.

2019-11-27  Andrew Sutton  <asutton@lock3software.com>

	Diagnose certain constraint errors as hard errors, but otherwise treat
	them the same as normal SFINAE-type errors. Also, generally clean up
	the satisfaction functions.

	* constexpr.c (cxx_eval_constant_expression): Use
	evaluate_concept_check.
	* constraint.cc (normalize_concept_definition): Accept a diagnostic
	flag and only cache when not diagnosing errors.
	(decl_satisfied_cache): Map to trees instead of bools.
	(satisfy_atom): Guarantee a location for the errors, propagate complain
	flags to force_rvalue, and emit errors for non-boolean constraints.
	(get_normalized_constraints_and_args): New overloads. Factored out of
	satisfy_constraint_expression and satisfy_declaration_constraints.
	(satisfy_constraint_expression): Propagate diagnostic info to
	normalization.
	(satisfy_declaration_constraints): New. Factored out of
	constraints_satisfied_p.
	(constraint_satisfaction_value): New. Calls
	satisfy_constraint_expression or satisfy_declaration_constraints.
	(constraints_satisfied_p): Call constraint_satisfaction_value.
	(evaluate_concept_check): Don't take tsubst_falgs_t. Replay
	satisfaction if an error is encountered.
	(current_failed_constraint): Moved from pt.c.
	(diagnose_constraints): Call constraint_satisfaction_value.
	* cp-tree.h: Update declarations.
	* pt.c (current_failed_constraint): Moved to constraint.cc.
	* semantics.c (finish_id_expression_1): Remove a duplicate case.

2019-11-27  Jakub Jelinek  <jakub@redhat.com>

	PR c++/92524
	* tree.c (replace_placeholders_r): Don't walk constructor elts with
	RANGE_EXPR indexes.

2019-11-26  Jason Merrill  <jason@redhat.com>

	* pt.c (tsubst_copy_and_build) [TEMPLATE_ID_EXPR]: Remember the
	location of a variable template-id.
	* constexpr.c (cxx_eval_constant_expression): Get expr location
	before stripping location wrappers.
	(non_const_var_error): Take location argument.

2019-11-26  Paolo Carlini  <paolo.carlini@oracle.com>

	* typeck.c (cp_build_unary_op): Consistently use the accurate
	location in seven additional diagnostic messages.
	(cp_build_compound_expr): Use cp_expr_loc_or_input_loc in one place.

2019-11-26  Jakub Jelinek  <jakub@redhat.com>

	PR c++/92648
	* parser.c (cp_parser_std_attribute): For unknown attributes,
	skip balanced token seq instead of trying to parse
	attribute-argument-clause as expression list.  Formatting fix.

	PR c++/61414
	* class.c (enum_to_min_precision): New hash_map.
	(enum_min_precision): New function.
	(check_bitfield_decl): Use it.

2019-11-25  Paolo Carlini  <paolo.carlini@oracle.com>

	* typeck.c (cp_build_indirect_ref_1): Add location_t parameter
	and use it in error messages.
	(build_x_indirect_ref): Adjust call.
	(build_indirect_ref): Likewise.
	(cp_build_fold_indirect_ref): Likewise.
	(cp_build_array_ref): Likewise.
	* call.c (build_new_op_1): Likewise.
	* semantics.c (finish_omp_clauses): Likewise.
	(finish_omp_depobj): Likewise.
	* typeck2.c (build_x_arrow): Likewise.
	* cp-tree.h (cp_build_indirect_ref): Update declaration.

	* call.c (build_new_op_1): Use location argument in warning_at.

	* typeck.c (cp_build_modify_expr): Consistently use the
	location_t argument.

2019-11-23  Bernd Edlinger  <bernd.edlinger@hotmail.de>

	PR c++/92365
	* name-lookup.c (check_local_shadow): Use can_convert_arg
	instead of can_convert.

2019-11-22  Marek Polacek  <polacek@redhat.com>

	PR c++/88337 - P1327R1: Allow polymorphic typeid in constexpr.
	* constexpr.c (potential_constant_expression_1): Allow a typeid
	expression whose operand is of polymorphic type in constexpr in
	C++20.
	* rtti.c (build_typeid): Remove obsolete FIXME comment.

2019-11-22  Jakub Jelinek  <jakub@redhat.com>

	PR c/90677
	* cp-objcp-common.c (identifier_global_tag): Define.

	PR c++/92458
	* init.c (nsdmi_inst): Change type to
	decl_tree_cache_map * from tree_cache_map *.
	* constraint.cc (decl_constraints): Likewise.
	* decl.c (get_tuple_decomp_init): Likewise.
	* pt.c (defarg_inst, explicit_specifier_map): Likewise.
	(tsubst_default_argument, store_explicit_specifier): Use
	decl_tree_cache_map::create_ggc rather than
	tree_cache_map::create_ggc.
	* cp-objcp-common.c (debug_type_map): Change type to
	type_tree_cache_map * from tree_cache_map *.

2019-11-21  Marek Polacek  <polacek@redhat.com>

	PR c++/92450 - ICE with invalid nested name specifier.
	* parser.c (cp_parser_member_declaration): Don't attempt to print
	erroneous bit-field diagnostic if grokdeclarator returns
	error_mark_node.

2019-11-21  Jakub Jelinek  <jakub@redhat.com>
	    Jason Merrill  <jason@redhat.com>

	PR c++/90842
	* parser.c (cp_parser_decl_specifier_seq): For concept or typedef
	break early if CP_PARSER_FLAGS_ONLY_MUTABLE_OR_CONSTEXPR.
	For type specifiers, set CP_PARSER_FLAGS_NO_TYPE_DEFINITIONS
	if CP_PARSER_FLAGS_ONLY_MUTABLE_OR_CONSTEXPR is set.

2019-11-20  Paolo Carlini  <paolo.carlini@oracle.com>

	* typeck2.c (build_x_arrow): Early return if decay_conversion
	returns error_mark_node.

2019-11-20  Jakub Jelinek  <jakub@redhat.com>

	PR c++/90767
	* call.c (complain_about_no_candidates_for_method_call): If
	conv->from is not a type, pass to complain_about_bad_argument
	lvalue_type of conv->from.

2019-11-20  Paolo Carlini  <paolo.carlini@oracle.com>

	* cvt.c (ocp_convert): Use additional warning sentinel.

2019-11-19  Jakub Jelinek  <jakub@redhat.com>

	PR c++/92414
	* constexpr.c (cxx_eval_outermost_constant_expr): If DECL_INITIAL
	on object is erroneous, return t without trying to evaluate
	a constexpr dtor.

2019-11-12  Jason Merrill  <jason@redhat.com>

	* call.c (same_fn_or_template): Change to cand_parms_match.
	(joust): Adjust.
	(print_z_candidate): Mark rewritten/reversed candidates.
	(build_new_op_1): Warn about recursive call with reversed arguments.

2019-11-15  Andrew Sutton  <asutton@lock3software.com>

	PR c++/89913
	* pt.c (get_underlying_template): Exit loop if the original type
	of the alias is null.

2019-11-19  Andrew Sutton  <asutton@lock3software.com>

	PR c++/92078
	* pt.c (maybe_new_partial_specialization): Apply access to newly
	created partial specializations. Update comment style.

2019-11-19  Andrew Sutton  <asutton@lock3software.com>

	PR c++/92078
	* pt.c (maybe_new_partial_specialization): Apply access to newly
	created partial specializations. Update comment style.

2019-11-19  Andrew Sutton  <asutton@lock3software.com>

	PR c++/92403
	Suppress diagnostics substituting into a requires-expression.
	* pt.c (tsubst_copy_and_build): Perform the first substitution without
	diagnostics and a second only if tsubst_requries_expr returns an error.

2019-11-19  Jakub Jelinek  <jakub@redhat.com>

	PR c++/92504
	* semantics.c (handle_omp_for_class_iterator): Don't call
	cp_fully_fold on cond.

2019-11-18  Paolo Carlini  <paolo.carlini@oracle.com>

	* typeck.c (cp_build_addr_expr_1): Use cp_expr_loc_or_input_loc
	in three places.
	(cxx_sizeof_expr): Use it in one additional place.
	(cxx_alignof_expr): Likewise.
	(lvalue_or_else): Likewise.

2019-11-18  Marek Polacek  <polacek@redhat.com>

	PR c++/91962 - ICE with reference binding and qualification conversion.
	* call.c (convert_like_real) <case ck_ref_bind>: Check need_temporary_p.

2019-11-17  Jakub Jelinek  <jakub@redhat.com>

	* method.c (lookup_comparison_result): Use %qD instead of %<%T::%D%>
	to print the decl.
	(lookup_comparison_category): Use %qD instead of %<std::%D%> to print
	the decl.

2019-11-15  Paolo Carlini  <paolo.carlini@oracle.com>

	* typeck.c (cp_truthvalue_conversion): Add tsubst_flags_t parameter
	and use it in calls; also pass the location_t of the expression to
	cp_build_binary_op and c_common_truthvalue_conversion.
	* rtti.c (build_dynamic_cast_1): Adjust call.
	* cvt.c (ocp_convert): Likewise.
	* cp-gimplify.c (cp_fold): Likewise.
	* cp-tree.h (cp_truthvalue_conversion): Update declaration.

2019-11-14  Jason Merrill  <jason@redhat.com>

	Implement P1816R0, class template argument deduction for aggregates.
	* pt.c (maybe_aggr_guide, collect_ctor_idx_types): New.
	(is_spec_or_derived): Split out from do_class_deduction.
	(build_deduction_guide): Handle aggregate guide.
	* class.c (finish_struct): Set CLASSTYPE_NON_AGGREGATE in a
	template.
	* cp-tree.h (CP_AGGREGATE_TYPE_P): An incomplete class is not an
	aggregate.

2019-11-14  Richard Sandiford  <richard.sandiford@arm.com>

	* call.c (build_conditional_expr_1): Use truth_type_for instead
	of build_same_sized_truth_vector_type.
	* typeck.c (build_vec_cmp): Likewise.

2019-11-14  Jakub Jelinek  <jakub@redhat.com>

	* parser.c (cp_parser_omp_context_selector): Don't require score
	argument to fit into shwi, just to be INTEGER_CST.  Diagnose
	negative score.
	* pt.c (tsubst_attribute): Likewise.

	* parser.c (cp_parser_omp_context_selector): Rename
	CTX_PROPERTY_IDLIST to CTX_PROPERTY_NAME_LIST, add CTX_PROPERTY_ID.
	Use CTX_PROPERTY_ID for atomic_default_mem_order, only allow a single
	identifier in that.  For CTX_PROPERTY_NAME_LIST, allow identifiers
	and string literals.
	* pt.c (tsubst_attribute): Fix up STRING_CST handling if allow_string.

2019-11-13  Marek Polacek  <polacek@redhat.com>

	PR c++/89070 - bogus [[nodiscard]] warning in SFINAE.
	* cvt.c (convert_to_void): Guard maybe_warn_nodiscard calls with
	tf_warning.

2019-11-13  Richard Sandiford  <richard.sandiford@arm.com>

	PR c++/92206
	* cp-tree.h (STF_STRIP_DEPENDENT): New constant.
	* tree.c (strip_typedefs): Add STF_STRIP_DEPENDENT to the flags
	when calling strip_typedefs recursively on a DECL_ORIGINAL_TYPE.
	Don't apply the fix for DR1558 in that case; allow aliases with
	dependent template parameters to be stripped instead.

2019-11-12  Nathan Sidwell  <nathan@acm.org>

	* name-lookup.c (lookup_using_decl): New function, merged from ...
	(do_class_using_decl): ... here.  Call it.  And ...
	(finish_nonmember_using_decl): ... here.  Call it.

2019-11-12  Martin Liska  <mliska@suse.cz>

	* name-lookup.c: Do not include params.h.
	* typeck.c: Likewise.

2019-11-12  Martin Liska  <mliska@suse.cz>

	* name-lookup.c (namespace_hints::namespace_hints): Replace old
	parameter syntax with the new one, include opts.h if needed.  Use
	SET_OPTION_IF_UNSET macro.
	* typeck.c (comptypes): Likewise.

2019-11-12  Maciej W. Rozycki  <macro@codesourcery.com>
	    Frederik Harwath  <frederik@codesourcery.com>

	gcc/cp/
	* constexpr.c (potential_constant_expression_1): Handle
	OACC_SERIAL.
	* parser.c (OACC_SERIAL_CLAUSE_MASK): New macro.
	(cp_parser_oacc_kernels_parallel): Rename function to...
	(cp_parser_oacc_compute): ... this.  Handle PRAGMA_OACC_SERIAL.
	(cp_parser_omp_construct): Update accordingly.
	(cp_parser_pragma): Handle PRAGMA_OACC_SERIAL.  Fix alphabetic
	order.
	* pt.c (tsubst_expr): Handle OACC_SERIAL.

2019-11-11  Jason Merrill  <jason@redhat.com>

	Implement P1946R0, Allow defaulting comparisons by value.
	* method.c (early_check_defaulted_comparison): Accept by-value,
	reject mixed by-value and by-reference parms.
	* decl.c (grokdeclarator): Set funcdef_flag for defaulted friend.
	* decl2.c (grokfield): Don't SET_DECL_FRIEND_CONTEXT.

	* typeck.c (cp_build_binary_op): Sorry about <=> on VECTOR_TYPE.

2019-11-11  Jakub Jelinek  <jakub@redhat.com>

	PR c++/92447
	* decl.c (finish_function): Move ctype initialization before
	DECL_DELETED_FN handling.

	* semantics.c (finish_translation_unit): Diagnose declare target
	without corresponding end declare target.

2019-11-10  Jason Merrill  <jason@redhat.com>

	Implement D1957R0, T* to bool should be considered narrowing.
	* typeck2.c (check_narrowing): Treat pointer->bool as a narrowing
	conversion with -std=c++2a.

2019-11-08  Marek Polacek  <polacek@redhat.com>

	PR c++/92215 - flawed diagnostic for bit-field with non-integral type.
	* parser.c (cp_parser_member_declaration): Add a diagnostic for
	bit-fields with non-integral types.

2019-11-08  Jakub Jelinek  <jakub@redhat.com>

	* init.c (build_vec_delete_1): Fix a comment typo - mist -> must.

2019-11-07  Jason Merrill  <jason@redhat.com>

	Implement D1959R0, remove weak_equality and strong_equality.
	* method.c (enum comp_cat_tag, comp_cat_info): Remove *_equality.
	(genericize_spaceship, common_comparison_type): Likewise.
	* typeck.c (cp_build_binary_op): Move SPACESHIP_EXPR to be with the
	relational operators, exclude other types no longer supported.

2019-11-06  Jason Merrill  <jason@redhat.com>

	Implement D1907R1 "structural type".
	* tree.c (structural_type_p): New.
	* pt.c (invalid_nontype_parm_type_p): Use it.
	* class.c (build_base_field_1): Take binfo.  Copy TREE_PRIVATE.
	(build_base_field): Pass binfo.

	PR c++/92150 - partial specialization with class NTTP.
	* pt.c (unify): Handle VIEW_CONVERT_EXPR.

	* pt.c (use_pack_expansion_extra_args_p): Still do substitution if
	all packs are simple pack expansions.
	(add_extra_args): Check that the extra args aren't dependent.

2019-11-06  Andrew Sutton  <asutton@lock3software.com>

	Use satisfaction with nested requirements.
	* constraint.cc (build_parameter_mapping): Use
	current_template_parms when the declaration is not available.
	(norm_info::norm_info) Make explicit.
	(normalize_constraint_expression): Factor into a separate overload
	that takes arguments, and use that in the original function.
	(tsubst_nested_requirement): Use satisfy_constraint instead of
	trying to evaluate this as a constant expression.
	(finish_nested_requirement): Keep the normalized constraint and the
	original normalization arguments with the requirement.
	(diagnose_nested_requirement): Use satisfy_constraint. Tentatively
	implement more comprehensive diagnostics, but do not enable.
	* parser.c (cp_parser_requires_expression): Relax requirement that
	requires-expressions can live only inside templates.
	* pt.c (any_template_parm_r): Look into type of PARM_DECL.

2019-11-06  Jason Merrill  <jason@redhat.com>

	C++20 NB CA378 - Remove constrained non-template functions.
	* decl.c (grokfndecl): Reject constraints on non-templated function.

2019-11-06  Matthias Kretz  <m.kretz@gsi.de>

	* parser.c (cp_parser_operator): Parse operator?: as an
	attempt to overload the conditional operator.

2019-11-05  Jason Merrill  <jason@redhat.com>

	Implement C++20 operator<=>.
	* cp-tree.h (struct lang_decl_fn): Add maybe_deleted bitfield.
	(DECL_MAYBE_DELETED): New.
	(enum special_function_kind): Add sfk_comparison.
	(LOOKUP_REWRITTEN, LOOKUP_REVERSED): New.
	* call.c (struct z_candidate): Add rewritten and reversed methods.
	(add_builtin_candidate): Handle SPACESHIP_EXPR.
	(add_builtin_candidates): Likewise.
	(add_candidates): Don't add a reversed candidate if the parms are
	the same.
	(add_operator_candidates): Split out from build_new_op_1.  Handle
	rewritten and reversed candidates.
	(add_candidate): Swap conversions of reversed candidate.
	(build_new_op_1): Swap them back.  Build a second operation for
	rewritten candidates.
	(extract_call_expr): Handle rewritten calls.
	(same_fn_or_template): New.
	(joust): Handle rewritten and reversed candidates.
	* class.c (add_implicitly_declared_members): Add implicit op==.
	(classtype_has_op, classtype_has_defaulted_op): New.
	* constexpr.c (cxx_eval_binary_expression): Handle SPACESHIP_EXPR.
	(cxx_eval_constant_expression, potential_constant_expression_1):
	Likewise.
	* cp-gimplify.c (genericize_spaceship): New.
	(cp_genericize_r): Use it.
	* cp-objcp-common.c (cp_common_init_ts): Handle SPACESHIP_EXPR.
	* decl.c (finish_function): Handle deleted function.
	* decl2.c (grokfield): SET_DECL_FRIEND_CONTEXT on defaulted friend.
	(mark_used): Check DECL_MAYBE_DELETED.  Remove assumption that
	defaulted functions are non-static members.
	* error.c (dump_expr): Handle SPACESHIP_EXPR.
	* method.c (type_has_trivial_fn): False for sfk_comparison.
	(enum comp_cat_tag, struct comp_cat_info_t): New types.
	(comp_cat_cache): New array variable.
	(lookup_comparison_result, lookup_comparison_category)
	(is_cat, cat_tag_for, spaceship_comp_cat)
	(spaceship_type, genericize_spaceship)
	(common_comparison_type, early_check_defaulted_comparison)
	(comp_info, build_comparison_op): New.
	(synthesize_method): Handle sfk_comparison.  Handle deleted.
	(get_defaulted_eh_spec, maybe_explain_implicit_delete)
	(explain_implicit_non_constexpr, implicitly_declare_fn)
	(defaulted_late_check, defaultable_fn_check): Handle sfk_comparison.
	* name-lookup.c (get_std_name_hint): Add comparison categories.
	* tree.c (special_function_p): Add sfk_comparison.
	* typeck.c (cp_build_binary_op): Handle SPACESHIP_EXPR.

2019-11-05  Tim van Deurzen  <tim@kompiler.org>

	Add new tree code for the spaceship operator.
	* cp-tree.def: Add new tree code.
	* operators.def: New binary operator.
	* parser.c: Add new token and tree code.

2019-09-15  Jason Merrill  <jason@redhat.com>

	* call.c (build_new_op_1): Don't apply any standard conversions to
	the operands of a built-in operator.  Don't suppress conversions in
	cp_build_unary_op.
	* typeck.c (cp_build_unary_op): Do integral promotions for enums.

2019-11-04  Jason Merrill  <jason@redhat.com>

	Use vec instead of raw array for built-in candidates.
	* call.c (build_builtin_candidate): Take args in a vec.
	(add_builtin_candidate, add_builtin_candidates): Likewise.
	(build_conditional_expr_1, build_new_op_1): Adjust.

2019-11-04  Jason Merrill  <jason@redhat.com>

	* constexpr.c (explain_invalid_constexpr_fn): Show location of fn.

	* pt.c (maybe_instantiate_noexcept): Only update clones if we
	instantiated.

	* typeck.c (contextual_conv_bool): New.

	* name-lookup.c (lookup_qualified_name): Add wrapper overload taking
	C string rather than identifier.
	* parser.c (cp_parser_userdef_numeric_literal): Use it.
	* rtti.c (emit_support_tinfos): Use it.
	* cp-tree.h (ovl_op_identifier): Change to inline functions.
	(build_x_binary_op): Add wrapper with fewer parms.

2019-11-05  Jason Merrill  <jason@redhat.com>

	* decl2.c (mark_used): Diagnose use of a function with unsatisfied
	constraints here.
	* typeck.c (cp_build_function_call_vec): Not here.

2019-11-05  Nathan Sidwell  <nathan@acm.org>

	PR c++/92370
	* parser.c (cp_parser_error_1): Check EOF and UNKNOWN_LOCATION
	when skipping over version control marker.

2019-11-05  Jakub Jelinek  <jakub@redhat.com>

	PR c++/92343
	* constexpr.c (potential_constant_expression_1): Return true rather
	than false for PREDICT_EXPR.

	* decl.c (omp_declare_variant_finalize_one): Call
	declare_simd_adjust_this not just on the context, but also on the
	variant-id expression for methods.  Don't call
	cp_get_callee_fndecl_nofold, call cp_get_callee and only if it is
	safe cp_get_fndecl_from_callee.  Don't try to print as %qD
	NULL in diagnostics.
	* pt.c (tsubst_attribute): Handle "omp declare variant base"
	attribute.
	(tsubst_function_decl): Call omp_declare_variant_finalize
	if there are any "omp declare variant base" attributes left.

2019-11-04  Kamlesh Kumar  <kamleshbhalui@gmail.com>

	PR c++/91979 - mangling nullptr expression
	* mangle.c (write_template_arg_literal): Handle nullptr
	mangling.

2019-11-04  Jason Merrill  <jason@redhat.com>

	* typeck.c (check_return_expr): Avoid redundant error.

2019-11-02  Paolo Carlini  <paolo.carlini@oracle.com>

	* typeck.c (composite_pointer_type): Add a const op_location_t&
	parameter and use it in diagnostics.
	(composite_pointer_error): Likewise.
	(composite_pointer_type_r): Add a const op_location_t&
	parameter and forward it.
	(cp_build_binary_op): Adjust calls.
	(common_pointer_type): Likewise.
	* call.c (add_builtin_candidate): Likewise.
	(build_conditional_expr_1): Likewise.
	* cp-tree.h (composite_pointer_type): Update declaration.

	* typeck.c (cxx_sizeof_expr): Use cp_expr_loc_or_input_loc
	in permerror.
	(cxx_alignof_expr): Likewise.
	(lvalue_or_else): Likewise.

2019-11-02  Jakub Jelinek  <jakub@redhat.com>

	* decl.c (omp_declare_variant_finalize_one): Use
	omp_get_context_selector instead of c_omp_get_context_selector.

	PR c++/89640
	* parser.c (cp_parser_decl_specifier_seq): Don't parse attributes
	if CP_PARSER_FLAGS_ONLY_MUTABLE_OR_CONSTEXPR.

	PR c++/88335 - Implement P1073R3: Immediate functions
	* cp-tree.h (struct lang_decl_fn): Add immediate_fn_p bit.
	(DECL_IMMEDIATE_FUNCTION_P, SET_DECL_IMMEDIATE_FUNCTION_P): Define.
	(enum cp_decl_spec): Add ds_consteval.
	(fold_non_dependent_expr): Add another tree argument defaulted to
	NULL_TREE.
	* name-lookup.h (struct cp_binding_level): Add immediate_fn_ctx_p
	member.
	* parser.c (cp_keyword_starts_decl_specifier_p): Adjust comments
	for C++11 and C++20 specifiers.  Handle RID_CONSTEVAL.
	(CP_PARSER_FLAGS_ONLY_MUTABLE_OR_CONSTEXPR): Adjust comment.
	(CP_PARSER_FLAGS_CONSTEVAL): New.
	(cp_parser_skip_balanced_tokens): New forward declaration.
	(cp_parser_lambda_declarator_opt): Handle ds_consteval.  Set
	current_binding_level->immediate_fn_ctx_p before parsing parameter
	list if decl-specifier-seq contains consteval specifier.
	(cp_parser_decl_specifier_seq): Handle RID_CONSTEVAL.
	(cp_parser_explicit_instantiation): Diagnose explicit instantiation
	with consteval specifier.
	(cp_parser_init_declarator): For consteval or into flags
	CP_PARSER_FLAGS_CONSTEVAL.
	(cp_parser_direct_declarator): If CP_PARSER_FLAGS_CONSTEVAL, set
	current_binding_level->immediate_fn_ctx_p in the sk_function_parms
	scope.
	(set_and_check_decl_spec_loc): Add consteval entry, formatting fix.
	* call.c (build_addr_func): For direct calls to immediate functions
	use build_address rather than decay_conversion.
	(build_over_call): Evaluate immediate function invocations.
	* error.c (dump_function_decl): Handle DECL_IMMEDIATE_FUNCTION_P.
	* semantics.c (expand_or_defer_fn_1): Use tentative linkage and don't
	call mark_needed for immediate functions.
	* typeck.c (cxx_sizeof_or_alignof_expr): Likewise.  Formatting fix.
	(cp_build_addr_expr_1): Reject taking address of immediate function
	outside of immediate function.
	* decl.c (validate_constexpr_redeclaration): Diagnose consteval
	vs. non-consteval or vice versa redeclaration.  Use
	SET_DECL_IMMEDIATE_FUNCTION_P if new_decl is immediate function.
	(check_tag_decl): Use %qs with keyword string to simplify translation.
	Handle ds_consteval.
	(start_decl): Adjust diagnostics for static or thread_local variables
	in immediate functions.
	(grokfndecl): Call sorry_at on virtual consteval.  Use %qs with keyword
	to string to simplify translation.  Diagnose consteval main.  Use
	SET_DECL_IMMEDIATE_FUNCTION_P for consteval.
	(grokdeclarator): Handle consteval.  Use %qs with keyword strings to
	simplify translation.  Use separate ifs instead of chained else if
	for invalid specifiers.  For constinit clear constinit_p rather than
	constexpr_p.
	* constexpr.c (find_immediate_fndecl): New function.
	(cxx_eval_outermost_constant_expr): Allow consteval calls returning
	void.  Diagnose returning address of immediate function from consteval
	evaluation.
	(fold_non_dependent_expr_template): Add OBJECT argument, pass it
	through to cxx_eval_outermost_constant_expr.
	(fold_non_dependent_expr): Add OBJECT argument, pass it through to
	fold_non_dependent_expr_template.
	(fold_non_dependent_init): Adjust fold_non_dependent_expr_template
	caller.
	* method.c (defaulted_late_check): Adjust diagnostics for consteval.
	* lambda.c (maybe_add_lambda_conv_op): Copy over
	DECL_DECLARED_CONSTEXPR_P and DECL_IMMEDIATE_FUNCTION_P bits from
	callop to both artificial functions.
	* init.c (build_value_init): Don't do further processing if
	build_special_member_call returned a TREE_CONSTANT.  Formatting fix.

	PR c++/91369 - Implement P0784R7: constexpr new
	* cp-tree.h (CALL_FROM_NEW_OR_DELETE_P): Define.
	* init.c (build_new_1, build_vec_delete_1, build_delete): Set
	CALL_FROM_NEW_OR_DELETE_P on the CALL_EXPR to allocator functions.
	* constexpr.c (is_std_allocator_allocate): Only allow
	global replaceable allocator functions if CALL_FROM_NEW_OR_DELETE_P
	or in std::allocate<T>::{,de}allocate.
	(potential_constant_expression_1): Likewise.

2019-11-01  Nathan Sidwell  <nathan@acm.org>

	* class.c (check_field_decls): Refactor.

2019-10-31  Jakub Jelinek  <jakub@redhat.com>

	PR c++/90947
	* cp-tree.h (type_initializer_zero_p): Declare.
	* decl.c (reshape_init_array_1): Formatting fix.
	* tree.c (type_initializer_zero_p): New function.  Moved from
	../tree.c, use next_initializable_field, formatting fix.  Return
	false for TYPE_NON_AGGREGATE_CLASS types.

2019-10-30  Jason Merrill  <jason@redhat.com>

	PR c++/92268 - hard error satisfying return-type-requirement
	* constraint.cc (type_deducible_p): Check for substitution failure.
	(diagnose_compound_requirement): Adjust diagnostic.
	* pt.c (do_auto_deduction): Don't pass cargs to
	constraints_satisfied_p.

2019-10-30  Jakub Jelinek  <jakub@redhat.com>

	PR c++/91369 - Implement P0784R7: constexpr new
	* constexpr.c (cxx_replaceable_global_alloc_fn): Don't return true
	for placement new.
	(cxx_placement_new_fn, is_std_construct_at): New functions.
	(cxx_eval_call_expression): Allow placement new in std::construct_at.
	(potential_constant_expression_1): Likewise.

	* typeck.c (decl_in_std_namespace_p): Return true also for decls
	in inline namespaces inside of std namespace.

2019-10-30  Bernd Edlinger  <bernd.edlinger@hotmail.de>

	PR c++/92024
	* name-lookup.c (check_local_shadow): Shadowing TYPE_DECLs
	is always a -Wshadow=compatible-local warning, unless
	-Wshadow is used.

2019-10-30  Jason Merrill  <jason@redhat.com>

	* cxx-pretty-print.c (get_fold_operator): Use OVL_OP_INFO.

2019-10-30  Marek Polacek  <polacek@redhat.com>

	PR c++/92134 - constinit malfunction in static data member.
	* decl2.c (grokfield): Set LOOKUP_CONSTINIT.

2019-10-30  Jakub Jelinek  <jakub@redhat.com>

	* cp-tree.h (omp_declare_variant_finalize, build_local_temp): Declare.
	* decl.c: Include omp-general.h.
	(declare_simd_adjust_this): Add forward declaration.
	(omp_declare_variant_finalize_one, omp_declare_variant_finalize): New
	function.
	(cp_finish_decl, finish_function): Call omp_declare_variant_finalize.
	* parser.c (cp_finish_omp_declare_variant): Adjust parsing of the
	variant id-expression and propagate enough information to
	omp_declare_variant_finalize_one in the attribute so that it can
	finalize it.
	* class.c (finish_struct): Call omp_declare_variant_finalize.
	* tree.c (build_local_temp): No longer static, remove forward
	declaration.

2019-10-30  Paolo Carlini  <paolo.carlini@oracle.com>

	* typeck.c (cp_build_modify_expr): Prefer error + inform to
	error + error in one place.
	(get_delta_difference_1): Likewise.
	(get_delta_difference): Likewise, in two places.

2019-10-29  Paolo Carlini  <paolo.carlini@oracle.com>

	* typeck.c (build_x_unary_op): Use the location_t argument in
	three error_at.

2019-10-29  Marek Polacek  <polacek@redhat.com>

	PR c++/90998 - ICE with copy elision in init by ctor and -Wconversion.
	* call.c (joust): Don't attempt to warn if ->second_conv is null.

2019-10-29  Jakub Jelinek  <jakub@redhat.com>

	PR c++/92201
	* cp-gimplify.c (cp_gimplify_expr): If gimplify_to_rvalue changes the
	function pointer type, re-add cast to the original one.

2019-10-29  Marek Polacek  <polacek@redhat.com>

	PR c++/91548 - fix detecting modifying const objects for ARRAY_REF.
	* constexpr.c (cxx_eval_store_expression): Don't call
	modifying_const_object_p for ARRAY_REF.

2019-10-29  Richard Sandiford  <richard.sandiford@arm.com>

	* cp-objcp-common.h (cxx_simulate_enum_decl): Declare.
	(LANG_HOOKS_SIMULATE_ENUM_DECL): Define to the above.
	* decl.c (cxx_simulate_enum_decl): New function.

2019-10-29  Richard Sandiford  <richard.sandiford@arm.com>

	* cp-tree.h (cxx_simulate_builtin_function_decl): Declare.
	* decl.c (cxx_simulate_builtin_function_decl): New function.
	* cp-objcp-common.h (LANG_HOOKS_SIMULATE_BUILTIN_FUNCTION_DECL):
	Define to the above.

2019-10-28  Martin Sebor  <msebor@redhat.com>

	PR c/66970
	* cp-objcp-common.c (names_builtin_p): Define new function.

2019-10-28  Nathan Sidwell  <nathan@acm.org>

	* parser.h (struct cp_token): Drop {ENUM,BOOL}_BITFIELD C-ism.
	Add tree_check_p flag, use as nested union discriminator.
	(struct cp_lexer): Add saved_type & saved_keyword fields.
	* parser.c (eof_token): Delete.
	(cp_lexer_new_main): Always init last_token to last token of
	buffer.
	(cp_lexer_new_from_tokens): Overlay EOF token at end of range.
	(cp_lexer_destroy): Restore token under the EOF.
	(cp_lexer_previous_token_position): No check for eof_token here.
	(cp_lexer_get_preprocessor_token): Clear tree_check_p.
	(cp_lexer_peek_nth_token): Check CPP_EOF not eof_token.
	(cp_lexer_consume_token): Assert not CPP_EOF, no check for
	eof_token.
	(cp_lexer_purge_token): Likewise.
	(cp_lexer_purge_tokens_after): No check for EOF token.
	(cp_parser_nested_name_specifier, cp_parser_decltype)
	(cp_parser_template_id): Set tree_check_p.

2019-10-24  Jakub Jelinek  <jakub@redhat.com>

	* decl2.c (cplus_decl_attributes): Add "omp declare target block"
	attribute in between declare target and end declare target
	pragmas.

	* call.c (convert_arg_to_ellipsis): Add missing space in string
	literal.

2019-10-24  Marek Polacek  <polacek@redhat.com>

	* decl.c (reshape_init_r): Add missing space.

2019-10-24  Nathan Sidwell  <nathan@acm.org>

	* pt.c (reduce_template_parm_level): Attach the new TPI to the new
	DECL.
	(convert_generic_types_to_packs): Pass the copied type to
	reduce_templatE_parm_level.

2019-10-23  Nathan Sidwell  <nathan@acm.org>

	* cp-tree.c (CPTI_STD_IDENTIFIER): Delete.
	(std_identifier): Delete.
	(DECL_NAME_SPACE_STD_P): Compare against std_node.
	* decl.c (initialize_predefined_identifiers): 'std' is not needed.
	(cxx_init_decl_processing): Adjust creation of ::std.  Use
	{push,pop}_nested_namespace.
	(cxx_builtin_function): Use {push,pop}_nested_namespace.
	* except.c (init_exception_processing): Likewise.
	* rtti.c (init_rtti_processing): Likewise.

2019-10-23  Jason Merrill  <jason@redhat.com>

	Implement P1286R2, Contra CWG1778
	* method.c (defaulted_late_check): Don't check explicit
	exception-specification on defaulted function.
	(after_nsdmi_defaulted_late_checks): Remove.
	* parser.h (struct cp_unparsed_functions_entry): Remove classes.
	* parser.c (unparsed_classes): Remove.
	(push_unparsed_function_queues, cp_parser_class_specifier_1):
	Adjust.

2019-10-23  Jakub Jelinek  <jakub@redhat.com>

	* constexpr.c (cxx_eval_constant_expression) <case CLEANUP_STMT>:
	Temporarily change input_location to CLEANUP_STMT location.

2019-10-22  Jakub Jelinek  <jakub@redhat.com>

	PR tree-optimization/85887
	* decl.c (expand_static_init): Drop ECF_LEAF from __cxa_guard_acquire
	and __cxa_guard_release.

2019-10-22  Marc Glisse  <marc.glisse@inria.fr>

	PR c++/85746
	* constexpr.c (cxx_eval_builtin_function_call): Only set
	force_folding_builtin_constant_p if manifestly_const_eval.

2019-10-22  Richard Sandiford  <richard.sandiford@arm.com>

	* cp-tree.h (STF_USER_VISIBLE): New constant.
	(strip_typedefs, strip_typedefs_expr): Take a flags argument.
	* tree.c (strip_typedefs, strip_typedefs_expr): Likewise,
	updating mutual calls accordingly.  When STF_USER_VISIBLE is true,
	only look through typedefs if user_facing_original_type_p.
	* error.c (dump_template_bindings, type_to_string): Pass
	STF_USER_VISIBLE to strip_typedefs.
	(dump_type): Likewise, unless pp_c_flag_gnu_v3 is set.

2019-10-21  Kamlesh Kumar  <kamleshbhalui@gmail.com>
	    Jason Merrill  <jason@redhat.com>

	PR c++/83534 - typeinfo of noexcept function
	* rtti.c (get_tinfo_decl_dynamic): Do not call
	TYPE_MAIN_VARIANT for function.
	(get_typeid): Likewise.

2019-10-21  Paolo Carlini  <paolo.carlini@oracle.com>

	* parser.c (cp_parser_class_head): Improve error recovery upon
	extra qualification error.

2019-10-21  Jakub Jelinek  <jakub@redhat.com>

	PR c++/92015
	* constexpr.c (cxx_eval_component_reference, cxx_eval_bit_field_ref):
	Use STRIP_ANY_LOCATION_WRAPPER on CONSTRUCTOR elts.

2019-10-21  Marek Polacek  <polacek@redhat.com>

	PR c++/92062 - ODR-use ignored for static member of class template.
	* pt.c (has_value_dependent_address): Strip location wrappers.

2019-10-21  Marek Polacek  <polacek@redhat.com>

	PR c++/92106 - ICE with structured bindings and -Wreturn-local-addr.
	* typeck.c (maybe_warn_about_returning_address_of_local): Avoid
	recursing on null initializer and return false instead.

2019-10-17  JeanHeyd Meneide  <phdofthehouse@gmail.com>

	Implement p1301 [[nodiscard("should have a reason")]] + p1771 DR
	* tree.c (handle_nodiscard_attribute): Handle C++2a nodiscard
	string message.
	(std_attribute_table) Increase nodiscard argument handling
	max_length from 0 to 1.
	* parser.c (cp_parser_check_std_attribute): Add requirement
	that nodiscard only be seen once in attribute-list.
	(cp_parser_std_attribute): Check that empty parenthesis lists are
	not specified for attributes that have max_length > 0 (e.g.
	[[attr()]]).
	* cvt.c (maybe_warn_nodiscard): Add nodiscard message to
	output, if applicable.
	(convert_to_void): Allow constructors to be nodiscard-able (P1771).

2019-10-18  Nathan Sidwell  <nathan@acm.org>

	* cp-tree.h (struct lang_type): Remove was_anonymous.
	(TYPE_WAS_UNNAMED): Implement by checking TYPE_DECL &
	TYPE_STUB_DECL.
	* decl.c (name_unnamed_type): Don't set TYPE_WAS_UNNAMED.

2019-10-17  Paolo Carlini  <paolo.carlini@oracle.com>

	* decl.c (grokfndecl): Remove redundant use of in_system_header_at.
	(compute_array_index_type_loc): Likewise.
	(grokdeclarator): Likewise.
	* error.c (cp_printer): Likewise.
	* lambda.c (add_default_capture): Likewise.
	* parser.c (cp_parser_primary_expression): Likewise.
	(cp_parser_selection_statement): Likewise.
	(cp_parser_toplevel_declaration): Likewise.
	(cp_parser_enumerator_list): Likewise.
	(cp_parser_using_declaration): Likewise.
	(cp_parser_member_declaration): Likewise.
	(cp_parser_exception_specification_opt): Likewise.
	(cp_parser_std_attribute_spec): Likewise.
	* pt.c (do_decl_instantiation): Likewise.
	(do_type_instantiation): Likewise.
	* typeck.c (cp_build_unary_op): Likewise.

	* decl.c (check_tag_decl): Pass to in_system_header_at the same
	location used for the permerror.
	(grokdeclarator): Likewise.

	* decl.c (check_tag_decl): Use locations[ds_typedef] in error_at.

2019-10-17  Jason Merrill  <jason@redhat.com>

	* cp-gimplify.c (cp_gimplify_expr): Use get_initialized_tmp_var.
	(gimplify_to_rvalue): Remove default NULL argument.

2019-10-17  Nathan Sidwell  <nathan@acm.org>

	* decl.c (builtin_function_1): Merge into ...
	(cxx_builtin_function): ... here.  Nadger the decl before maybe
	copying it.  Set the context.
	(cxx_builtin_function_ext_scope): Push to top level, then call
	cxx_builtin_function.

2019-10-16  Luis Machado  <luis.machado@linaro.org>

	* cp-gimplify.c: Fix reference to non-existing tree-gimple.c file.

2019-10-16  Jakub Jelinek  <jakub@redhat.com>

	* decl.c (cxx_maybe_build_cleanup): When clearing location of cleanup,
	if cleanup is a nop, clear location of its operand too.

2019-10-15  Andrew Sutton  <asutton@lock3software.com>

	Finish moving constraint and logic functionality of out pt.c.
	Reimplement and re-enable subsumption caching.

	* config-lang.in (gtfiles): Add logic.cc.
	* constraint.cc (atomic_constraints_identical_p): Add assertions.
	(hash_atomic_constraint): Likewise.
	(constraints_equivalent_p): New.
	(inchash::add_constraint): New.
	(iterative_hash_constraint): New.
	(decl_constraints): Moved from pt.c.
	(get_constraints): Likewise.
	(set_constraints): Likewise.
	(remove_constraints): Likewise.
	* cp-tree.h (CONSTR_P): New.
	(init_constraint_processing): Remove.
	(constraints_equivalent_p, iterative_hash_constraint): Declare.
	* decl.c (cxx_init_decl_processing): Don't initialize constraints.
	* logic.cc (subsumption_entry): Moved from pt.c.
	(subsumption_hasher): Likewise.
	(subsumption_cache): Likewise.
	(lookup_subsumption): Likewise.
	(save_subsumption): Likewise.
	(subsumes_constraints_nonnull): Use subsumption cache.
	* pt.c: Move aforementioned declarations out of this file.
	(init_constraint_processing): Remove.

2019-10-15  Andrew Sutton  <asutton@lock3software.com>

	* parser.c (cp_parser_constructor_declarator_p): Pass an empty
	decl-specifier-seq to make sure we parse type constraints as part
	of a type-specifier.

2019-10-15  Nathan Sidwell  <nathan@acm.org>

	* class.c (build_clones): Break out of clone_function_decl.  Just
	build the clones.
	(clone_function_decl): Call build_clones, then maybe add them to
	the method vector.

	* class.c (build_clone): Refactor to clarify recursiveness.

2019-10-14  Jason Merrill  <jason@redhat.com>

	PR c++/91930 - ICE with constrained inherited default ctor.
	* name-lookup.c (do_class_using_decl): Set TYPE_HAS_USER_CONSTRUCTOR
	for inherited constructor.

2019-10-14  Paolo Carlini  <paolo.carlini@oracle.com>

	* decl.c (check_tag_decl): Use DECL_SOURCE_LOCATION.

2019-10-14  Jakub Jelinek  <jakub@redhat.com>

	PR c++/92084
	* semantics.c (handle_omp_array_sections_1): Temporarily disable
	-fstrong-eval-order also for in_reduction and task_reduction clauses.

	* parser.c (cp_parser_omp_all_clauses): Change bool NESTED_P argument
	into int NESTED, if it is 2, diagnose missing commas in between
	clauses.
	(cp_parser_omp_context_selector): Pass 2 as last argument to
	cp_parser_omp_all_clauses.

2019-10-12  Jakub Jelinek  <jakub@redhat.com>

	* parser.c (cp_parser_omp_context_selector): Improve error recovery.
	For simd properties, put them directly into TREE_VALUE.
	(cp_finish_omp_declare_variant): Add "omp declare variant base"
	attribute rather than "omp declare variant".

2019-10-11  Marek Polacek  <polacek@redhat.com>

	PR c++/92049 - extra error with -fchecking=2.
	* pt.c (build_non_dependent_expr): Call fold_non_dependent_expr
	with tf_none.

2019-10-11  Paolo Carlini  <paolo.carlini@oracle.com>

	* typeck.c (cp_build_binary_op): Do not handle RROTATE_EXPR and
	LROTATE_EXPR.
	* constexpr.c (cxx_eval_constant_expression): Likewise.
	(potential_constant_expression_1): Likewise.
	* pt.c (tsubst_copy): Likewise.

2019-10-11  Jason Merrill  <jason@redhat.com>

	* decl2.c (mark_used): Don't clobber DECL_SOURCE_LOCATION on
	explicitly defaulted functions.
	* method.c (synthesize_method): Likewise.

2019-10-11  Jakub Jelinek  <jakub@redhat.com>

	PR c++/91987
	* decl2.c (grok_array_decl): For -fstrong-eval-order, when array ref
	operands have been swapped and at least one operand has side-effects,
	revert the swapping before calling build_array_ref.
	* typeck.c (cp_build_array_ref): For non-ARRAY_TYPE array ref with
	side-effects on the index operand, if -fstrong-eval-order use
	save_expr around the array operand.
	(cp_build_binary_op): For shifts with side-effects in the second
	operand, wrap first operand into SAVE_EXPR and evaluate it before
	the shift.
	* semantics.c (handle_omp_array_sections_1): Temporarily disable
	flag_strong_eval_order during OMP_CLAUSE_REDUCTION array section
	processing.
	* cp-gimplify.c (gimplify_to_rvalue): New function.
	(cp_gimplify_expr): Use it.

2019-10-10  Marek Polacek  <polacek@redhat.com>

	* typeck.c (comp_ptr_ttypes_real): Change the return type to bool.
	Use false instead of 0.

2019-10-10  Jakub Jelinek  <jakub@redhat.com>

	* parser.h (struct cp_omp_declare_simd_data): Add variant_p member.
	* parser.c (cp_ensure_no_omp_declare_simd): Handle both declare simd
	and declare variant.
	(cp_parser_oacc_all_clauses): Formatting fix.
	(cp_parser_omp_all_clauses): Add NESTED_P argument, if true, terminate
	processing on closing paren and don't skip to end of pragma line.
	(cp_parser_omp_declare_simd): Add VARIANT_P argument.  Handle also
	declare variant.
	(omp_construct_selectors, omp_device_selectors,
	omp_implementation_selectors, omp_user_selectors): New variables.
	(cp_parser_omp_context_selector,
	cp_parser_omp_context_selector_specification,
	cp_finish_omp_declare_variant): New functions.
	(cp_parser_late_parsing_omp_declare_simd): Handle also declare variant.
	(cp_parser_omp_declare): Handle declare variant.

2019-10-09  Jason Merrill  <jason@redhat.com>

	* cp-tree.h (template_info_decl_check): Check ENABLE_TREE_CHECKING.

2019-10-09  Marek Polacek  <polacek@redhat.com>

	PR c++/91364 - P0388R4: Permit conversions to arrays of	unknown bound.
	PR c++/69531 - DR 1307: Differently bounded array parameters.
	PR c++/88128 - DR 330: Qual convs and pointers to arrays of pointers.
	* call.c (build_array_conv): Build ck_identity at the beginning
	of the conversion.
	(standard_conversion): Pass bounds_none to comp_ptr_ttypes_const.
	(maybe_warn_array_conv): New.
	(convert_like_real): Call it.  Add an error message about converting
	from arrays of unknown bounds.
	(conv_get_original_expr): New.
	(nelts_initialized_by_list_init): New.
	(conv_binds_to_array_of_unknown_bound): New.
	(compare_ics): Implement list-initialization ranking based on
	array sizes, as specified in DR 1307 and P0388R.
	* cp-tree.h (comp_ptr_ttypes_const): Adjust declaration.
	(compare_bounds_t): New enum.
	* typeck.c (comp_array_types): New bool and compare_bounds_t
	parameters.  Use them.
	(structural_comptypes): Adjust the call to comp_array_types.
	(similar_type_p): Handle ARRAY_TYPE.
	(build_const_cast_1): Pass bounds_none to comp_ptr_ttypes_const.
	(comp_ptr_ttypes_real): Don't check cv-quals of ARRAY_TYPEs.  Use
	comp_array_types to compare array types.  Look through arrays as per
	DR 330.
	(comp_ptr_ttypes_const): Use comp_array_types to compare array types.
	Look through arrays as per DR 330.

2019-10-09  Marek Polacek  <polacek@redhat.com>

	PR c++/92032 - DR 1601: Promotion of enum with fixed underlying	type.
	* call.c (standard_conversion): When converting an enumeration with
	a fixed underlying type to the underlying type, give it the cr_promotion
	rank.
	(compare_ics): Implement a tiebreaker as per CWG 1601.

2019-10-08  Andrew Sutton  <asutton@lock3software.com>
	    Jason Merrill  <jason@redhat.com>

	Update the concepts implementation to conform to the C++20
	specification, improve compile times, and generally clean up
	the implementation.
	* call.c (build_new_function_call): Don't evaluate concepts here.
	(constraint_failure): Don't record the template.
	(print_z_candidate): Don't extract the template.
	* class.c (add_method): When overloading, hide ineligible special
	member fns.
	(check_methods): Set TYPE_HAS_COMPLEX_* here.
	* constexpr.c (cxx_eval_constant_expression): Evaluate concepts.
	(maybe_initialize_fundef_copies_table): Remove.
	(get_fundef_copy): Use hash_map_safe_get_or_insert.
	(clear_cv_and_fold_caches): Clear the satisfaction cache.
	* constraint.cc (known_non_bool_p): New.
	(parsing_constraint_expression_sentinel): Renamed from
	expanding_constraint_sentinel.
	(check_constraint_operands): New.
	(check_constraint_atom): New.
	(finish_constraint_binary_op): New.
	(finish_constraint_or_expr): Likewise.
	(finish_constraint_and_expr): Likewise.
	(finish_constraint_primary_expr): Likewise.
	(combine_constraint_expressions): New.
	(finish_requires_expr): Add location parm.
	(get_concept_definition): Return the initializer of concept definitions.
	(get_template_head_requirements): New.
	(get_trailing_function_requirements): New.
	(deduce_constrained_parameter): Check if the identifier or template-id
	is a concept definition.
	(resolve_concept_definition_check): Removed.
	(resolve_variable_concept_check): Removed.
	(resolve_concept_check): New.
	(resolve_constraint_check): Handle concept definitions.
	converting arguments.
	(function_concept_check_p): Removed.
	(variable_concept_check_p): Removed.
	(unpack_concept_check): New.
	(get_concept_check_template): New.
	(build_call_check): Moved and renamed to build_function_check.
	(build_concept_check_arguments): make static.
	(build_function_check): Always do overload resolution
	in order to force conversion of template arguments (i.e., actually
	check that the use of a concept is valid).
	(build_standard_check): Renamed from build_real_concept_check.
	(build_real_concept_check): Build checks for C++2a concepts by
	(build_wildcard_concept_check): New.
	(build_concept_check): Use build_real_concept_check. New overload.
	(build_constraints): Save expressions, not normalized constraints.
	(build_concept_id): New. Pass tf_warning_or_error.
	(build_type_constraint): New.
	(finish_type_constraints): New.
	(associate_classtype_constraints): Also add constraints to union
	types. Note the original declaration in errors. Don't return
	error_mark_node in order to avoid an assertion later.
	(push_down_pack_expansion): Remove.
	(finish_shorthand_constraint): Make fold expressions, not naked
	parameter packs. Always apply the constraint to each template argument.
	(check_introduction_list): New. Fail if not enough
	names are introduced.
	(finish_template_introduction): Don't normalize constraints. Pass
	tsubst flags. Check for insufficient introductions.
	(placeholder_extract_concept_and_args): Handle the template-id case.
	Unpack function concept checks correctly.
	(tsubst_simple_requirement): Return errors if they occur. Don't
	process as a template.
	(tsubst_type_requirement): Likewise.
	(type_deducible_p): New. Wrap the input expression in parens for the
	purpose of deduction.
	(expression_convertible_t): New.
	(tsubst_compound_requirement): Use new deduction, conversion predicates.
	(tsubst_nested_requirement): Return errors if they occur. Don't
	process as a template. Instantiate and evaluate the nested requirement.
	(tsubst_valid_expression_requirement): New.
	(tsubst_simple_requirement): Use tsubst_valid_expression_requirement.
	(tsubst_compound_requirement): Use tsubst_valid_expression_requirement.
	(check_constaint_variables): New.
	(tsubst_constraint_variables): Check that type substitutions are valid.
	(tsubst_requires_expr): Likewise. Produce new requires-exprs during
	template substitution. Copy the previous local specialization stack,
	so references to non-local parameters can be found. Use cp_unevaluated.
	(tsubst_constraint): New. Don't evaluate concept checks.
	(subst_info): New.
	(norm_info): New. Used to build a normalization tree for concept check
	diagnostics.
	(debug_parameter_mapping): New.
	(debug_argument_list): New.
	(expand_concept): Removed.
	(normalize_logical_operation): Pass subst_info through call.
	(normalize_pack_expansion): Remove.
	(normalize_simple_requirement): Removed
	(normalize_type_requirement): Removed
	(normalize_compound_requirement): Removed
	(normalize_nested_requirement): Removed
	(normalize_requirement): Removed
	(normalize_requirements): Removed
	(normalize_requires_expression): Removed
	(normalize_variable_concept_check): Removed.
	(normalize_function_concept_check): Removed.
	(normalize_concept_check): Merged all normalize_*_check here.
	Substitute through written template arguments before normalizing the
	definition. Only substitute the innermost template arguments.
	(check_for_logical_overloads): Delete.
	(map_arguments): New. Associate template parameters with arguments.
	(build_parameter_mapping): New. Extract used parameters.
	(normalize_expression): Rewrite.
	(normalize_conjunction): Removed
	(normalize_disjunction): Removed
	(normalize_predicate_constraint): Removed
	(normalize_parameterized_constraint): Removed
	(normalized_map): New variable.
	(get_normalized_constraints): New entry point for normalization.
	Establishes a timer.
	(get_normalized_constraints_from_info): New.
	(get_normalized_constraints_from_decl): New. Turn on template processing
	prior to normalization. Handle inheriting ctors. Build the
	normalization arguments from the full set of template parameters of the
	most general template. This guarantees that we have no concrete arguments
	in the parameter mapping (e.g., from template members of class
	templates). Cache normalizations.
	(normalize_concept_definition): New. Cache normalizations.
	(normalize_template_requirements): New.
	(normalize_nontemplate_requirements): New.
	(normalize_constraint_expression): New.
	(tsubst_parameter_mapping): New.
	(get_mapped_args): New.
	(parameter_mapping_equivalent_p): New. Use template_args_equal.
	(atomic_constraints_identical_p): New.
	(hash_atomic_constraint): New.
	(satisfying_constraint_p): New. Guard against recursive evaluation of
	constraints during satisfaction.
	(satisfy_conjunction): New.
	(satisfy_disjunction): New.
	(sat_entry): New class for hashing satisfaction results.
	(sat_hasher): New hash traits.
	(sat_cache): New.
	(get_satisfaction): New. Returns cached satisfaction result.
	(save_satisfaction): New. Caches a satisfaction result.
	(clear_satisfaction_cache): New.
	(satisfaction_cache): New. Helps manage satisfaction cache requests.
	(decl_satisfied_cache): New.
	(satisfy_atom): New.
	(satisfy_constraint_r): New.
	(satisfy_constraint): Use new satisfaction algorithm.
	(evaluate_concept_check): New.
	(evaluate_concept): Removed.
	(evaluate_function_concept): Removed.
	(evaluate_variable_concept): Removed.
	(satisfy_constraint_expression): New.
	(constraint_expression_satisfied_p): New.
	(constraints_satisfied_p): Use strip_inheriting_ctors. Use
	push_/pop_access_scope.
	(more_constrained): Normalize before calling out to subsumption. Allow
	classes as arguments.
	(strictly_subsumes): Allow non-templates as arguments. Accept a new
	template argument.
	(weakly_subsumes): New.
	(at_least_as_constrained): Removed.
	(diagnose_other_expression): Removed.
	(diagnose_predicate_constraint): Removed.
	(diagnose_pack_expansion): Removed.
	(diagnose_check_constraint): Removed.
	(diagnose_logical_constraint): Removed.
	(diagnose_expression_constraint): Removed.
	(diagnose_type_constraint): Removed.
	(diagnose_implicit_conversion_constraint): Removed.
	(diagnose_argument_deduction_constraint): Removed.
	(diagnose_exception_constraint): Removed.
	(diagnose_parameterized_constraint): Removed.
	(diagnose_argument_deduction_constraint): Removed.
	(diagnose_argument_deduction_constraint): Removed.
	(diagnose_argument_deduction_constraint): Removed.
	(diagnose_trait_expr): New.
	(diagnose_requires_expr): New.
	(diagnose_atomic_constraint): New.
	(diagnose_valid_expression) Stop wrongly diagnosing valid expressions.
	Don't substitute as if in template decls. This causes substitution
	to generate expressions that aren't suitable for use with the noexcept
	routines.
	(diagnose_valid_type) Likewise.
	(diagnose_compound_requirement) Actually emit diagnostics for
	the causes of errors.Call force_paren_expr_uneval.
	(diagnose_declaration_constraints): Turn on template processing to
	suppress certain analyses.
	* cp-objcp-common.c (cp_common_init_ts): Make concepts typed.
	(cp_get_debug_type): Use hash_map_safe_*.
	* cp-tree.h: New function declarations for semantic actions, other
	facilities. Remove declaration no longer used or needed. Remove
	unused _CONSTR macros.
	(LANG_DECL_HAS_MIN): Add CONCEPT_DECL.
	(template_info_decl_check): Factor macro check into an inline function.
	(DECL_TEMPLATE_INFO): Use new check facility.
	(finish_concept_definition): New. Don't invalid concept declarations
	with invalid initializers.
	(find_template_parameters): New.
	(concept_definition_p): New.
	(concept_check_p): New.
	(variable_concept_check_p): New.
	(force_paren_expr_uneval): New.
	(ovl_iterator::using_p): A USING_DECL by itself was also
	introduced by a using-declaration.
	(struct tree_template_info): Use tree_base instead of
	tree_common. Add tmpl and args fields.
	(TI_TEMPLATE, TI_ARGS): Adjust.
	(DECLTYPE_FOR_INIT_CAPTURE): Remove.
	(CONSTR_CHECK, CONSTR_INFO, CONSTR_EXPR, CONSTR_CONTEXT): New.
	(ATOMIC_CONSTR_MAP, TRAIT_EXPR_LOCATION): New.
	(struct tree_trait_expr): Add locus field.
	(enum tsubst_flags): Add tf_norm as a hint to generate normalization
	context when diagnosing constraint failure.
	* cp-tree.def: Remove unused _CONSTR nodes and rename PRED_CONSTR
	to ATOMIC_CONSTR.
	(CONCEPT_DECL): New.
	* cxx-pretty-print.c: Remove constraint printing code.
	(pp_cxx_concept_definition): New.
	(pp_cxx_template_declaration): Print concept definitions.
	(pp_cxx_check_constraint): Update printing for concept definitions.
	(pp_cxx_nested_name_specifier): Fix a weird
	case where we're printing '::::' for concepts.
	(simple_type_specifier): Print requirements for placeholder types.
	(pp_cxx_constrained_type_spec): Print the associated requirements of
	a placeholder type.
	(pp_cxx_compound_requirement): Add space before the '->'.
	(pp_cxx_parameter_mapping): Print the parameter mapping.
	(pp_cxx_atomic_constraint): Use the function above.
	* decl.c (redeclaration_error_message): New error for concepts.
	(grokdeclarator): Check for and disallow decltype(auto) in parameter
	declarations.
	(grokfndecl): Don't normalize constraints. Add check for constraints
	on declaration.
	(grokvardecl): Don't normalize constraints.
	(grok_special_member_properties): Don't set TYPE_HAS_COMPLEX_*.
	(function_requirements_equivalent_p): New. Compare trailing
	requires clauses. Compare combined constraints in pre-C++20 mode.
	(decls_match): Compare trailing requires clauses. Compare template
	heads for function templates. Remove old constraint comparison.
	Simplify comparison of functions, function templates.
	(duplicate_function_template_decls): New. Refactor a nasty if
	condition into a single predicate.
	(require_deduced_type): Don't complain if we already complained about
	deduction failure.
	(finish_function): Perform auto deduction to ensure that constraints
	are checked even when functions contain no return statements. Only do
	auto deduction if we haven't previously seen any return statements.
	This prevents multiple diagnostics of the same error.
	(store_decomp_type): Remove.
	(cp_finish_decomp): Use hash_map_safe_put.
	* error.c: Remove constraint printing code.
	(dump_decl): Dump concept definitions. Handle wildcard declarations.
	(dump_template_decl): Likewise.
	(dump_type): Print associated requirements for placeholder
	types.
	(rebuild_concept_check): New.
	(maybe_print_single_constraint_context): New.
	(maybe_print_constraint_context): Recursively print nested contexts.
	* init.c (get_nsdmi): Use hash_map_safe_*.
	* lambda.c (maybe_add_lambda_conv_op): Bail if deduction failed.
	(add_capture): Copy parameter packs from init.
	(lambda_capture_field_type): Always use auto for init-capture.
	* logic.cc: Completely rewrite.
	(constraint_hash): New.
	(clause/ctor): Save atoms in the hash table.
	(replace): Save atoms during replacement.
	(insert): Save atoms during insertion.
	(contains): Only search the hash table for containment.
	(clause): Keep a hash of atomic constraints.
	(clause::clause): Explicitly copy the hash table when copying.
	(disjunction_p, conjunction_p, atomic_p, dnf_size, cnf_size): New.
	(diagnose_constraint_size): New.
	(subsumes_constraints_nonnull): Compare the sizes of normalized formula
	to determine the cheapest decomposition.
	* name-lookup.c (diagnose_name_conflict): Diagnose name issues with
	concepts.
	(matching_fn_p): Check constraints.
	(push_class_level_binding_1): Move overloaded functions case down,
	accept FUNCTION_DECL as target_decl.
	* parser.c (enum required_token): New required token for auto.
	(make_location): Add overload taking lexer as last parm.
	(cp_parser_required_error): Diagnose missing auto.
	(cp_parser_diagnose_ungrouped_constraint_plain): New.
	(cp_parser_diagnose_ungrouped_constraint_plain): New.
	(cp_parser_constraint_primary_expression): New. Tentatively parse the
	primary expression. If that fails tentatively parse a lower
	precedence expression in order to diagnose the error.
	(cp_parser_check_non_logical_constraint): New. Performs a trial
	parse of the right-hand-side of non-logical operators in order to
	generate good diagnostics.
	(cp_parser_constraint_logical_and_expression): New.
	(cp_parser_constraint_logical_or_expression): New.
	(cp_parser_requires_clause_expression): New.
	(cp_parser_requires_clause): Renamed to cp_parser_constraint_expression.
	(cp_parser_requires_clause_opt): Parse the requires-clause differently
	in -fconcepts and -std=c++2a modes.
	(cp_parser_requirement_list): Rename to cp_parser_requirement_seq.
	Rewrite so that semicolons are parsed
	along with requirements, not the sequence.
	(cp_parser_simple_requirement): Expect a semicolon at end.
	(cp_parser_compound_requirement): Expect a semicolon at end. Only
	allow trailing-return-type with -fconcepts-ts.
	(cp_parser_nested_requirement): Expect a semicolon at end. Parse
	constraint-expressions.
	(cp_parser_concept_definition): New. Don't fail parsing the concept
	definition if the initializer is ill-formed. Don't declare the concept
	before parsing the initializer.
	(cp_parser_constraint_expression): Declare earlier.
	(cp_parser_type_requirement): Current scope is not valid.
	(cp_parser_requires_expression): Commit to the tentative parse.
	(cp_parser_decl_specifier_seq): Warn when concept appears to be used
	as a decl-specifier.
	(cp_parser_template_declaration_after_parameters): Parse concept
	definitions.
	(cp_parser_template_id): Don't try to resolve a concept template-id yet.
	(cp_parser_template_id_expr): Resolve it as a concept check.
	(cp_parser_decl_specifier_seq): Warn on 'concept bool'.
	(cp_parser_type_parameter): Combine expressions not
	constraints.
	(cp_parser_explicit_template_declaration): Combine expressions not
	constraints.
	(cp_parser_maybe_concept_name): Removed.
	(cp_parser_simple_type_specifier): Handle an error condition of
	a bad constrained type specifier. Expect auto or decltype after
	a concept name. Also handle the case where we have a template-id
	as a concept check.
	(cp_parser_template_introduction): Diagnose errors on invalid
	introductions. Give up if it doesn't start with a concept name.
	Pedwarn if not -fconcepts-ts.
	(synthesize_implicit_template_parm): Don't do consistent binding.
	Use a new flag for constrained parameters. Combine expressions,
	not constraints. Fail if we get a placeholder in block scope.
	Placeholders that do not constrain types are not allowed in parameter
	declarations, so don't handle them.
	(cp_parser_placeholder_type_specifier): New. Implement parsing of
	placeholder type specifiers following a concept name or partial
	concept check. Disallow decltype(auto) parameters.
	(cp_parser_nested_name_specifier_opt): If the token is already
	CPP_NESTED_NAME_SPECIFIER, leave it alone.
	(cp_parser_id_expression, cp_parser_unqualified_id): Call
	cp_parser_template_id_expr.
	(cp_parser_placeholder_type_specifier): Add tentative parm.  Don't
	expect a WILDCARD_DECL.
	(cp_parser_trait_expr): Pass trait_loc down.
	(cp_parser_postfix_expression): Do set location of dependent member
	call.
	* pt.c (finish_concept_definition): New.
	(push_template_decl_real): Handle concept definitions.
	(start_concept_definition): Let push_template_decl_real handle the
	creation of the template.
	(get_constraints): Return null if the table hasn't been initialized.
	(tsubst_copy_and_build): Build template-id expressions for concept
	checks.
	[TRAIT_EXPR]: Pass trait_loc down.
	(lookup_template_class_1): Add the template name to the constraint
	failure diagnostic.
	(lookup_and_finish_template_variable): Build concept checks
	with the correct arguments.
	(tsubst_function_decl): Don't substitute through constraints.
	Always associate constraints with functions.
	(template_parm_level_and_index): Make non-static.
	(for_each_template_parm_r): Handle requires expressions.
	(keep_template_parm): New.
	(find_template_parameters): New.
	(more_specialized_fn): Change how winners and losers are chosen.
	(make_constrained_auto): Don't normalize constraints.
	(template_parameters_equivalent_p): New. Compare template
	parameters. Add a comparison for implicitly vs. explicitly declared
	parameters.
	(template_parameter_lists_equivalent_p): New. Compare template
	parameter lists.
	(template_requirements_equivalent_p): New.
	(template_heads_equivalent_p): New. Compare template heads.
	(template_parameter_constraints_equivalent_p): New.
	(is_compatible_template_arg): Use weakly_subsumes.
	(maybe_new_partial_specialization): Use new constraint comparison
	for finding specializations.
	(process_partial_specialization): Pass main template as argument.
	(more_specialized_partial_spec): Don't immediately return when
	detecting a winner.
	(make_constrained_auto): Handle concept definitions.
	(do_auto_deduction): Update auto deduction for new concept model.
	Extract the function concept correctly; rename constr to check to
	reflect the kind of node.
	(tsubst): Adjust wildcard argument during substitution.
	[DECLTYPE_TYPE]: Remove init-capture handling.
	(tsubst_copy_and_build): Build concept checks, not template ids.
	Defer checks of function concepts. Handle concepts before variable
	templates. Handle calls to function concepts explicitly.
	(coerce_template_parms): Use concept_definition_p. Handle a deduction
	error where a potentially empty pack can be supplied after the last
	parameter of a concept.
	(finish_template_variable): Don't process concepts here.
	(instantiation_dependent_r): Use concept_check_p.
	(tsubst_template_args): Make non-static.
	(make_constrained_placeholder_type): New. Refactored from
	make_constrained_auto.
	(make_constrained_auto) Use make_constrained_placeholder_type.
	(make_constrained_decltype_auto) New.
	(tsubst_function_parms): New.
	(value_dependent_expression_p) [TEMPLATE_ID_EXPR]: Use
	concept_definition_p.
	(push_access_scope, pop_access_scope): No longer static.
	(tsubst_template_parm): Substitute TEMPLATE_PARM_CONSTRAINTS.
	(tsubst_friend_function): Use tsubst_constraint. Use generic_targs_for.
	(get_underlying_template) Use generic_targs_for.
	(uses_parameter_packs): Return tree.
	(gen_elem_of_pack_expansion_instantiation): Don't push
	local_specialization_stack.
	(prepend_one_capture): New.
	(tsubst_lambda_expr): Use prepend_one_capture.	Don't touch
	local_specializations.
	(template_parms_level_to_args): No longer static.
	(add_outermost_template_args): Likewise.
	(find_template_parameter_info): New. Provide context for finding
	template parameters.
	(keep_template_parm): Don't keep parameters declared at depth levels
	greater than those of the template parameters of the source declaration.
	Don't propagate cv-qualified types. Return 0, so we find all template
	parameters, not the just first.
	(any_template_parm_r): New. Handle cases that are mishandled by
	for_each_template_parm_r.
	(generic_targs_for): Factor out of coerce_template_args_for_ttp.
	(tsubst_argument_pack): Factor out of tsubst_template_args.
	(constraint_sat_entry): Removed.
	(constraint_sat_hasher): Removed.
	(concept_spec_entry): Removed.
	(concept_spec_hasher): Removed.
	(constraint_memos): Removed.
	(concept_memos): Removed.
	(lookup_constraint_satisfaction): Removed.
	(memoize_constraint_satisfaction): Removed.
	(lookup_concept_satisfaction): Removed.
	(memoize_concept_satisfaction): Removed.
	(concept_expansions): Removed.
	(get_concept_expansion): Removed.
	(save_concept_expansion): Removed.
	(init_constraint_processing): Remove initialization of non-existing
	resources.
	(find_template_requirement): New. Search for the sub-requirement
	within the associated constraints.
	(convert_generic_types_to_packs): Also transform the associated
	constraint and update the current template requirements.
	(store_defaulted_ttp, lookup_defaulted_ttp): Remove.
	(add_defaults_to_ttp): Use hash_map_safe_*.
	* semantics.c (finish_call_expr): Diagnose calls to concepts.
	Handle concept checks explicitly.
	(finish_id_expression): Evaluate variable concepts as part of
	id-expression processing. Don't treat variable concepts as variables,
	and don't process function concepts as plain id-expressions.
	(force_paren_expr): Add even_uneval parm.
	(finish_trait_expr): Add location parm.
	* tree.c (special_memfn_p): New.
	(cp_expr_location): Handle TRAIT_EXPR.
	* typeck.c (check_return_expr): Actually use the diagnostic kind
	when performing return-type deduction.
	* typeck2.c (build_functional_cast): Don't rely on the location of
	'auto'.

2019-10-09  Paolo Carlini  <paolo.carlini@oracle.com>

	* decl.c (grok_ctor_properties): Use DECL_SOURCE_LOCATION.
	* typeck.c (cp_build_binary_op): Use the op_location_t argument
	in many error messages.

2019-10-08  Martin Sebor  <msebor@redhat.com>

	PR c++/92001
	* call.c (maybe_warn_class_memaccess): Handle arrays.

2019-10-07  Paolo Carlini  <paolo.carlini@oracle.com>

	* call.c (resolve_args): Use cp_expr_loc_or_input_loc in one place.
	* decl.c (grokdeclarator): Use id_loc in one place.
	* decl2.c (build_anon_union_vars): Use DECL_SOURCE_LOCATION.
	* parser.c (cp_parser_delete_expression): Fix the location of the
	returned expression.
	(cp_parser_throw_expression): Likewise.
	* pt.c (determine_specialization): Use DECL_SOURCE_LOCATION.

2019-10-05  Jakub Jelinek  <jakub@redhat.com>

	PR c++/91369 - Implement P0784R7: constexpr new
	* cp-tree.h (enum cp_tree_index): Add CPTI_HEAP_UNINIT_IDENTIFIER,
	CPTI_HEAP_IDENTIFIER and CPTI_HEAP_DELETED_IDENTIFIER.
	(heap_uninit_identifier, heap_identifier, heap_deleted_identifier):
	Define.
	(type_has_constexpr_destructor, build_new_constexpr_heap_type,
	cxx_constant_dtor): Declare.
	* class.c (type_maybe_constexpr_default_constructor): Make static.
	(type_maybe_constexpr_destructor, type_has_constexpr_destructor): New
	functions.
	(finalize_literal_type_property): For c++2a, don't clear
	CLASSTYPE_LITERAL_P for types without trivial destructors unless they
	have non-constexpr destructors.
	(explain_non_literal_class): For c++2a, complain about non-constexpr
	destructors rather than about non-trivial destructors.
	* constexpr.c: Include stor-layout.h.
	(struct constexpr_global_ctx): New type.
	(struct constexpr_ctx): Add global field, remove values and
	constexpr_ops_count.
	(cxx_replaceable_global_alloc_fn): New inline function.
	(cxx_eval_call_expression): For c++2a allow calls to replaceable
	global allocation functions, for new return address of a heap uninit
	var, for delete record its deletion.  Change ctx->values->{get,put} to
	ctx->global->values.{get,put}.
	(non_const_var_error): Add auto_diagnostic_group sentinel.  Emit
	special diagnostics for heap variables.
	(cxx_eval_store_expression): Change ctx->values->{get,put} to
	ctx->global->values.{get,put}.
	(cxx_eval_loop_expr): Initialize jump_target if NULL.  Change
	new_ctx.values->remove to ctx->global->values.remove.
	(cxx_eval_constant_expression): Change *ctx->constexpr_ops_count
	to ctx->global->constexpr_ops_count.  Change ctx->values->{get,put} to
	ctx->global->values.{get,put}.
	<case NOP_EXPR>: Formatting fix.  On cast of replaceable global
	allocation function to some pointer type, adjust the type of
	the heap variable and change name from heap_uninit_identifier
	to heap_identifier.
	(find_heap_var_refs): New function.
	(cxx_eval_outermost_constant_expr): Add constexpr_dtor argument,
	handle evaluation of constexpr dtors and add tracking of heap
	variables.  Use tf_no_cleanup for get_target_expr_with_sfinae.
	(cxx_constant_value): Adjust cxx_eval_outermost_constant_expr caller.
	(cxx_constant_dtor): New function.
	(maybe_constant_value, fold_non_dependent_expr_template,
	maybe_constant_init_1): Adjust cxx_eval_outermost_constant_expr
	callers.
	(potential_constant_expression_1): Ignore clobbers.  Allow
	COND_EXPR_IS_VEC_DELETE for c++2a.
	* decl.c (initialize_predefined_identifiers): Add heap identifiers.
	(decl_maybe_constant_destruction): New function.
	(cp_finish_decl): Don't clear TREE_READONLY for constexpr variables
	with non-trivial, but constexpr destructors.
	(register_dtor_fn): For constexpr variables with constexpr non-trivial
	destructors call cxx_maybe_build_cleanup instead of adding destructor
	calls at runtime.
	(expand_static_init): For constexpr variables with constexpr
	non-trivial destructors call cxx_maybe_build_cleanup.
	(grokdeclarator): Allow constexpr destructors for c++2a.  Formatting
	fix.
	(cxx_maybe_build_cleanup): For constexpr variables with constexpr
	non-trivial destructors call cxx_constant_dtor instead of adding
	destructor calls at runtime.
	* init.c: Include stor-layout.h.
	(build_new_constexpr_heap_type, maybe_wrap_new_for_constexpr): New
	functions.
	(build_new_1): For c++2a and new[], add cast around the alloc call
	to help constexpr evaluation figure out the type of the heap storage.
	(build_vec_delete_1): Set DECL_INITIAL of tbase and emit a DECL_EXPR
	for it instead of initializing an uninitialized variable.
	* method.c: Include intl.h.
	(SFK_CTOR_P, SFK_DTOR_P, SFK_ASSIGN_P, SFK_COPY_P, SFK_MOVE_P): Move
	definitions earlier.
	(process_subob_fn): Add sfk argument, adjust non-constexpr call
	diagnostics based on it.
	(walk_field_subobs): Formatting fixes.  Adjust process_subob_fn caller.
	(synthesized_method_base_walk): Likewise.
	(synthesized_method_walk): Set *constexpr_p to true for dtors in c++2a.
	Fix up DR number in comment.
	(implicitly_declare_fn): Formatting fix.
	* typeck2.c (store_init_value): Don't call cp_fully_fold_init on
	initializers of automatic non-constexpr variables in constexpr
	functions.

2019-10-04  Jakub Jelinek  <jakub@redhat.com>

	PR c++/71504
	* constexpr.c (cxx_fold_indirect_ref_1): New function.
	(cxx_fold_indirect_ref): Use it.

	PR c++/91974
	* cp-gimplify.c (cp_gimplify_expr) <case CALL_EXPR>: For
	-fstrong-eval-order ensure CALL_EXPR_FN side-effects are evaluated
	before any arguments.  Additionally, ensure CALL_EXPR_FN that isn't
	invariant nor OBJ_TYPE_REF nor SSA_NAME is forced into a temporary.

2019-10-03  Paolo Carlini  <paolo.carlini@oracle.com>

	* init.c (build_new): Use cp_expr_loc_or_input_loc in two places.
	* name-lookup.c (do_pushdecl): Use DECL_SOURCE_LOCATION.
	(push_class_level_binding_1): Likewise.
	(set_decl_namespace): Likewise.

2019-10-03  Jakub Jelinek  <jakub@redhat.com>

	* constexpr.c (cxx_eval_constant_expression) <case CLEANUP_STMT>: If
	not skipping upon entry to body, run cleanup with the same *jump_target
	as it started to run the cleanup even if the body returns, breaks or
	continues.
	(potential_constant_expression_1): Allow CLEANUP_STMT.

	* constexpr.c (cxx_eval_store_expression): Formatting fix.  Handle
	const_object_being_modified with array type.

2019-10-02  Jason Merrill  <jason@redhat.com>

	* typeck2.c (store_init_value): Only clear_cv_and_fold_caches if the
	value is constant.

2019-09-30  Jason Merrill  <jason@redhat.com>

	Use hash_map_safe_* functions.
	* constexpr.c (maybe_initialize_fundef_copies_table): Remove.
	(get_fundef_copy): Use hash_map_safe_get_or_insert.
	* cp-objcp-common.c (cp_get_debug_type): Use hash_map_safe_*.
	* decl.c (store_decomp_type): Remove.
	(cp_finish_decomp): Use hash_map_safe_put.
	* init.c (get_nsdmi): Use hash_map_safe_*.
	* pt.c (store_defaulted_ttp, lookup_defaulted_ttp): Remove.
	(add_defaults_to_ttp): Use hash_map_safe_*.

2019-10-02  Richard Biener  <rguenther@suse.de>

	PR c++/91606
	* decl.c (build_ptrmemfunc_type): Mark pointer-to-member
	fat pointer structure members as DECL_NONADDRESSABLE_P.

2019-09-28  Marek Polacek  <polacek@redhat.com>

	PR c++/91889 - follow-up fix for DR 2352.
	* call.c (involves_qualification_conversion_p): New function.
	(direct_reference_binding): Build a ck_qual if the conversion
	would involve a qualification conversion.
	(convert_like_real): Strip the conversion created by the ck_qual
	in direct_reference_binding.

	PR c++/91921 - stray warning with -Woverloaded-virtual.
	* class.c (warn_hidden): Only emit the second part of
	-Woverloaded-virtual if the first part was issued.  Use inform instead
	warning_at.

	PR c++/91923 - failure-to-SFINAE with class type NTTP in C++17.
	* pt.c (invalid_nontype_parm_type_p): Only emit errors when
	tf_error.

2019-09-27  Jakub Jelinek  <jakub@redhat.com>

	PR c++/88203
	* parser.c (cp_parser_omp_var_list_no_open): Parse predefined
	variables.
	* semantics.c (finish_omp_clauses): Allow predefined variables in
	shared and firstprivate clauses, even when they are predetermined
	shared.
	* cp-gimplify.c (cxx_omp_predetermined_sharing_1): Return
	OMP_CLAUSE_DEFAULT_SHARED for predefined variables.

2019-09-27  Jason Merrill  <jason@redhat.com>

	* constexpr.c (cxx_fold_indirect_ref): Use similar_type_p.
	(cxx_eval_indirect_ref): Likewise.  Improve error location.

	* cp-tree.h (class iloc_sentinel): New.
	* decl.c (grokdeclarator, finish_enum_value_list): Use it.
	* mangle.c (mangle_decl_string): Use it.
	* pt.c (perform_typedefs_access_check): Use it.

2019-09-27  Richard Sandiford  <richard.sandiford@arm.com>

	* cp-tree.h (build_cxx_call): Take the original function decl
	as an optional final parameter.
	(cp_build_function_call_vec): Likewise.
	* call.c (build_cxx_call): Likewise.  Pass all built-in calls to
	check_builtin_function_arguments.
	* typeck.c (build_function_call_vec): Take the original function
	decl as an optional final parameter and pass it to
	cp_build_function_call_vec.
	(cp_build_function_call_vec): Take the original function
	decl as an optional final parameter and pass it to build_cxx_call.

2019-09-25  Marek Polacek  <polacek@redhat.com>

	PR c++/91877 - ICE with converting member of packed struct.
	* call.c (convert_like_real): Use similar_type_p in an assert.

2019-09-25  Paolo Carlini  <paolo.carlini@oracle.com>

	* name-lookup.c (check_extern_c_conflict): Use DECL_SOURCE_LOCATION.
	(check_local_shadow): Use it in three additional places.

2019-09-24  Jason Merrill  <jason@redhat.com>

	* parser.c (cp_parser_postfix_expression): Do set location of
	dependent member call.

2019-09-24  Marek Polacek  <polacek@redhat.com>

	PR c++/91868 - improve -Wshadow location.
	* name-lookup.c (check_local_shadow): Use DECL_SOURCE_LOCATION
	instead of input_location.

	PR c++/91845 - ICE with invalid pointer-to-member.
	* expr.c (mark_use): Use error_operand_p.
	* typeck2.c (build_m_component_ref): Check error_operand_p after
	calling mark_[lr]value_use.

2019-09-23  Paolo Carlini  <paolo.carlini@oracle.com>

	* pt.c (check_explicit_specialization): Use cp_expr_loc_or_input_loc.
	(process_partial_specialization): Likewise.
	(convert_nontype_argument_function): Likewise.
	(invalid_tparm_referent_p): Likewise.
	(convert_template_argument): Likewise.
	(check_valid_ptrmem_cst_expr): Tidy.

2019-09-23  Jason Merrill  <jason@redhat.com>

	PR c++/91809 - bit-field and ellipsis.
	* call.c (convert_arg_to_ellipsis): Don't call decay_conversion for
	arithmetic arguments.

2019-09-23  Marek Polacek  <polacek@redhat.com>

	PR c++/91844 - Implement CWG 2352, Similar types and reference binding.
	* call.c (reference_related_p): Use similar_type_p instead of
	same_type_p.
	(reference_compatible_p): Update implementation to match CWG 2352.
	* cp-tree.h (similar_type_p): Declare.
	* typeck.c (similar_type_p): New.

2019-09-22  Marek Polacek  <polacek@redhat.com>

	PR c++/91819 - ICE with operator++ and enum.
	* call.c (build_new_op_1): Set arg2_type.

2019-09-17  Jason Merrill  <jason@redhat.com>

	* parser.c (cp_parser_statement): Handle [[likely]] on
	compound-statement.

2019-09-19  Jason Merrill  <jason@redhat.com>

	Revert:
	* call.c (build_new_op_1): Don't apply any standard conversions to
	the operands of a built-in operator.  Don't suppress conversions in
	cp_build_unary_op.
	* typeck.c (cp_build_unary_op): Do integral promotions for enums.

2019-09-16  Paolo Carlini  <paolo.carlini@oracle.com>

	* decl.c (grokdeclarator): Use declspecs->locations and
	declarator->id_loc in a few error messages.
	* pt.c (finish_member_template_decl): Use DECL_SOURCE_LOCATION.
	(push_template_decl_real): Likewise.

2019-09-15  Jason Merrill  <jason@redhat.com>

	PR c++/30277 - int-width bit-field promotion.
	PR c++/33819 - long bit-field promotion.
	* typeck.c (cp_perform_integral_promotions): Handle large bit-fields
	properly.  Handle 32-bit non-int bit-fields properly.
	(is_bitfield_expr_with_lowered_type): Don't look through NOP_EXPR.

	PR c++/82165 - enum bitfields and operator overloading.
	* call.c (build_new_op_1): Use unlowered_expr_type.

	* call.c (build_new_op_1): Don't apply any standard conversions to
	the operands of a built-in operator.  Don't suppress conversions in
	cp_build_unary_op.
	* typeck.c (cp_build_unary_op): Do integral promotions for enums.

2019-09-15  Marek Polacek  <polacek@redhat.com>

	PR c++/91740 - ICE with constexpr call and ?: in ARRAY_REF.
	* pt.c (build_non_dependent_expr): Call build_non_dependent_expr for
	the first operand.

2019-09-15  Nathan Sidwell  <nathan@acm.org>

	* cp-tree.h (DECL_CLONED_FUNCTION_P): Reimplement using
	IDENTIFIER_CDTOR_P, correct documentation.
	(DECL_CLONED_FUNCTION): Directly access field.
	(decl_cloned_function_p): Delete.
	* class.c (decl_cloned_function_p): Delete.
	* pt.c (instantiate_template_1): Check DECL_CHAIN is a decl.

2019-09-11  Nathan Sidwell  <nathan@acm.org>

	* c-objcp-common.c (cp-objcp-common.c): Alphababetize and
	correctly mark all C++ nodes.
	* decl.c (cp_tree_node_structure): Alphabetize.

2019-09-10  Marek Polacek  <polacek@redhat.com>

	PR c++/91673 - ICE with noexcept in alias-declaration.
	* parser.c (CP_PARSER_FLAGS_DELAY_NOEXCEPT): New parser flag.
	(cp_parser_lambda_declarator_opt): Pass CP_PARSER_FLAGS_NONE to
	cp_parser_exception_specification_opt.
	(cp_parser_direct_declarator): Adjust a call to
	cp_parser_exception_specification_opt.
	(cp_parser_member_declaration): Pass CP_PARSER_FLAGS_DELAY_NOEXCEPT
	to cp_parser_declarator if not processing a friend or typedef
	declaration.
	(cp_parser_late_noexcept_specifier): Adjust a call to
	cp_parser_noexcept_specification_opt.
	(cp_parser_noexcept_specification_opt): New parameter for parser flags,
	drop the FRIEND_P parameter.  Use the new parameter.
	(cp_parser_exception_specification_opt): Likewise.
	(cp_parser_transaction): Adjust a call to
	cp_parser_noexcept_specification_opt.
	(cp_parser_transaction_expression): Likewise.

2019-09-10  Marek Polacek  <polacek@redhat.com>

	PR c++/91705 - constexpr evaluation rejects ++/-- on floats.
	* constexpr.c (cxx_eval_increment_expression): Call fold_simple on
	the offset.

2019-09-10  Paolo Carlini  <paolo.carlini@oracle.com>

	* decl.c (has_designator_problem): Use cp_expr_loc_or_input_loc
	in error_at.
	(build_enumerator): Likewise.
	(cp_finish_decl): Use DECL_SOURCE_LOCATION.
	(grokdeclarator): Use id_loc in two error_at; change errror
	message about constinit together constexpr to use two ranges.

2019-09-09  Marek Polacek  <polacek@redhat.com>

	PR c++/84374 - diagnose invalid uses of decltype(auto).
	* decl.c (grokdeclarator): Diagnose wrong usage of decltype(auto) in
	a function declaration.

2019-09-06  Nathan Sidwell  <nathan@acm.org>

	PR c++/91125
	* cp-tree.h (IDENTIFIER_REPO_CHOSEN, DECL_REPO_AVAILABLE_P): Delete.
	(struct lang_decl_base): Remove repo_available_p.
	* decl.c (duplicate_decls): Don't copy DECL_REPO_AVAILABLE_P.

	(Reserve TREE_LANG_FLAG_3 for modules.
	* cp-tree.h (DECL_CONSTRUCTION_VTABLE_P): Delete.
	(DECL_NON_TRIVIALLY_INITIALIZED_P): Move to TREE_LANG_FLAG_6.
	* class.c (build_ctor_vtbl_group): Don't set
	DECL_CONSTRUCTION_VTABLE_P.
	* decl2.c (determine_visibility_from_class): Don't check
	DECL_CONSTRUCTION_VTABLE_P anymore.

2019-09-06  Martin Liska  <mliska@suse.cz>

	PR c++/91125
	* Make-lang.in: Remove repo.o.
	* config-lang.in: Likewise.
	* cp-tree.h (init_repo): Remove declarations
	of repo-related functions.
	(repo_emit_p): Likewise.
	(repo_export_class_p): Likewise.
	(finish_repo): Likewise.
	* decl2.c (import_export_class): Always
	set -1 value/
	(mark_needed): Remove -frepo from comment.
	(import_export_decl): Similarly here.
	(c_parse_final_cleanups): Remove call of finish_repo.
	* lex.c (cxx_init): Remove call to init_repo.
	* optimize.c (can_alias_cdtor): Remove dead condition.
	* pt.c (push_template_decl_real): Update comment.
	(instantiate_decl): Remove dead code used for -frepo.
	* repo.c: Remove.

2019-09-05  Marek Polacek  <polacek@redhat.com>

	PR c++/91644 - ICE with constinit in function template.
	* decl.c (start_decl): Call retrofit_lang_decl for constinit variables.
	* pt.c (tsubst_expr): Pass LOOKUP_CONSTINIT down to cp_finish_decl for
	constinit variables.

2019-09-05  Nathan Sidwell  <nathan@acm.org>

	* cp-tree.h (DECL_VTABLE_OR_VTT_P): Forward to DECL_VIRTUAL_P.

2019-09-04  Marek Polacek  <polacek@redhat.com>

	* call.c (build_over_call): Remove -fdeduce-init-list implementation.
	* pt.c (unify): Likewise.

2019-09-01  Marek Polacek  <polacek@redhat.com>

	PR c++/91129 - wrong error with binary op in template argument.
	* typeck.c (warn_for_null_address): Use fold_for_warn instead of
	fold_non_dependent_expr.
	(cp_build_binary_op): Likewise.

2019-08-30  Jason Merrill  <jason@redhat.com>

	Add source location to TRAIT_EXPR.
	* cp-tree.h (TRAIT_EXPR_LOCATION): New.
	(struct tree_trait_expr): Add locus field.
	* parser.c (cp_parser_trait_expr): Pass trait_loc down.
	* pt.c (tsubst_copy_and_build) [TRAIT_EXPR]: Likewise.
	* semantics.c (finish_trait_expr): Add location parm.
	* tree.c (cp_expr_location): Handle TRAIT_EXPR.

2019-08-29  Paolo Carlini  <paolo.carlini@oracle.com>

	* decl.c (check_var_type): Add location_t parameter and use it.
	(grokdeclarator): Adjust call.
	* pt.c (tsubst_decl): Likewise.
	* cp-tree.h: Adjust declaration.

2019-08-28  Marek Polacek  <polacek@redhat.com>

	Implement P1152R4: Deprecating some uses of volatile.
	PR c++/91361
	* cp-gimplify.c (cp_fold): Set TREE_THIS_VOLATILE.
	* decl.c (grokdeclarator): Warn about a volatile-qualified structured
	binding and return type.
	(grokparms): Warn about a volatile-qualified function parameter.
	* expr.c (mark_use) <case MODIFY_EXPR>: Emit a -Wvolatile warning.
	* typeck.c (cp_build_unary_op): Emit a -Wvolatile warning for pre and
	post ++/-- on a volatile operand.
	(genericize_compound_lvalue): Use a better location.  Don't lose
	TREE_THIS_VOLATILE.
	(cp_build_modify_expr): Emit a -Wvolatile warning for a compound
	assignment whose LHS is volatile-qualified.  Build the assignment with
	a more precise location.

2019-08-28  Marek Polacek  <polacek@redhat.com>

	PR c++/91360 - Implement C++20 P1143R2: constinit.
	* cp-tree.h (TINFO_VAR_DECLARED_CONSTINIT): Define.
	(LOOKUP_CONSTINIT): Define.
	(enum cp_decl_spec): Add ds_constinit.
	* decl.c (check_tag_decl): Give an error for constinit in type
	declarations.
	(check_initializer): Also check LOOKUP_CONSTINIT.
	(cp_finish_decl): Add checking for a constinit declaration.  Set
	TINFO_VAR_DECLARED_CONSTINIT.
	(grokdeclarator): Add checking for a declaration with the constinit
	specifier.
	* lex.c (init_reswords): Handle D_CXX20.
	* parser.c (cp_lexer_get_preprocessor_token): Pass a better location
	to warning_at.  Warn about C++20 keywords.
	(cp_keyword_starts_decl_specifier_p): Handle RID_CONSTINIT.
	(cp_parser_diagnose_invalid_type_name): Add an inform about constinit.
	(cp_parser_decomposition_declaration): Maybe pass LOOKUP_CONSTINIT to
	cp_finish_decl.
	(cp_parser_decl_specifier_seq): Handle RID_CONSTINIT.
	(cp_parser_init_declarator): Maybe pass LOOKUP_CONSTINIT to
	cp_finish_decl.
	(set_and_check_decl_spec_loc): Add "constinit".
	* pt.c (tsubst_decl): Set TINFO_VAR_DECLARED_CONSTINIT.
	(instantiate_decl): Maybe pass LOOKUP_CONSTINIT to cp_finish_decl.
	* typeck2.c (store_init_value): If a constinit variable wasn't
	initialized using a constant initializer, give an error.

2019-08-28  Nathan Sidwell  <nathan@acm.org>

	PR c++/90613
	* name-lookup.c (cp_emit_debug_info): Check for builtins during
	overload iteration.

2019-08-27  Marek Polacek  <polacek@redhat.com>

	PR c++/81676 - bogus -Wunused warnings in constexpr if.
	* semantics.c (maybe_mark_exp_read_r): New function.
	(finish_if_stmt): Call it on THEN_CLAUSE and ELSE_CLAUSE.

	PR c++/91428 - warn about std::is_constant_evaluated in if constexpr.
	* cp-tree.h (decl_in_std_namespace_p): Declare.
	* semantics.c (is_std_constant_evaluated_p): New.
	(finish_if_stmt_cond): Warn about "std::is_constant_evaluated ()" in
	an if-constexpr.
	* typeck.c (decl_in_std_namespace_p): No longer static.

2019-08-26  Jason Merrill  <jason@redhat.com>

	* decl.c (duplicate_decls): Always merge DECL_DECLARED_CONSTEXPR_P.

2019-08-26  Marek Polacek  <polacek@redhat.com>

	PR c++/91545 - ICE in constexpr store evaluation.
	* constexpr.c (cxx_eval_store_expression): Check FIELD_DECL instead
	of DECL_P.

2019-08-24  Nathan Sidwell  <nathan@acm.org>

	* class.c (check_for_overrides): Conversion operators need
	checking too.

2019-08-24  Paolo Carlini  <paolo.carlini@oracle.com>

	* semantics.c (finish_switch_cond): Improve error message location.

2019-08-23  Jason Merrill  <jason@redhat.com>

	* decl2.c (decl_dependent_p): New.
	(mark_used): Check it instead of just processing_template_decl.

2019-08-23  Jason Merrill  <jason@redhat.com>

	* parser.c (cp_parser_nested_name_specifier_opt): Avoid redundant
	error.

2019-08-23  Marek Polacek  <polacek@redhat.com>

	PR c++/91521 - wrong error with operator->.
	* decl.c (grokdeclarator): Return error_mark_node for an invalid
	trailing return type.

	PR c++/79817 - attribute deprecated on namespace.
	* cp-tree.h (cp_warn_deprecated_use_scopes): Declare.
	* decl.c (grokdeclarator): Call cp_warn_deprecated_use_scopes.
	(type_is_deprecated): Likewise.
	* decl2.c (cp_warn_deprecated_use_scopes): New function.
	* name-lookup.c (handle_namespace_attrs): Handle attribute deprecated.
	* parser.c (cp_parser_namespace_alias_definition): Call
	cp_warn_deprecated_use_scopes.
	(cp_parser_using_declaration): Likewise.
	(cp_parser_using_directive): Likewise.
	* semantics.c (finish_id_expression_1): Likewise.

2019-08-23  Nathan Sidwell  <nathan@acm.org>

	* class.c (check_for_override): Checking IDENTIFIER_VIRTUAL_P is
	sufficient, reorder DECL_OVERRIDE_P check.

2019-08-23  Iain Sandoe  <iain@sandoe.co.uk>

	PR pch/61250
	* parser.c (cp_parser_initial_pragma): Call c_common_no_more_pch ()
	after determining that the first token is not
	PRAGMA_GCC_PCH_PREPROCESS.

2019-08-22  Marek Polacek  <polacek@redhat.com>

	PR c++/91304 - prefix attributes ignored in condition.
	* parser.c (cp_parser_condition): Handle prefix attributes.

2019-08-21  Richard Sandiford  <richard.sandiford@arm.com>

	PR c++/91505
	* decl.c (duplicate_decls): Call copy_attributes_to_builtin inside
	the BUILT_IN_NORMAL block rather than afterward.

2019-08-19  Marek Polacek  <polacek@redhat.com>

	PR c++/91264 - detect modifying const objects in constexpr.
	* constexpr.c (modifying_const_object_error): New function.
	(cxx_eval_call_expression): Set TREE_READONLY on a CONSTRUCTOR of
	a const-qualified object after it's been fully constructed.
	(modifying_const_object_p): New function.
	(cxx_eval_store_expression): Detect modifying a const object
	during constant expression evaluation.
	(cxx_eval_increment_expression): Use a better location when building
	up the store.
	(cxx_eval_constant_expression) <case DECL_EXPR>: Mark a constant
	object's constructor TREE_READONLY.

2019-08-15  Jason Merrill  <jason@redhat.com>

	PR c++/90393 - ICE with thow in ?:

	PR c++/64372, DR 1560 - Gratuitous lvalue-to-rvalue conversion in ?:
	* tree.c (lvalue_kind): Handle throw in one arm.
	* typeck.c (rationalize_conditional_expr): Likewise.
	(cp_build_modify_expr): Likewise.

2019-08-14  Jason Merrill  <jason@redhat.com>

	Implement P0848R3, Conditionally Trivial Special Member Functions.
	* tree.c (special_memfn_p): New.
	* class.c (add_method): When overloading, hide ineligible special
	member fns.
	(check_methods): Set TYPE_HAS_COMPLEX_* here.
	* decl.c (grok_special_member_properties): Not here.
	* name-lookup.c (push_class_level_binding_1): Move overloaded
	functions case down, accept FUNCTION_DECL as target_decl.

2019-08-14  Jonathan Wakely  <jwakely@redhat.com>

	PR c++/91436
	* name-lookup.c (get_std_name_hint): Fix min_dialect field for
	complex_literals and make_unique entries.

2019-08-14  Jakub Jelinek  <jakub@redhat.com>
	    Marek Polacek  <polacek@redhat.com>

	PR c++/91391 - bogus -Wcomma-subscript warning.
	* parser.c (cp_parser_postfix_open_square_expression): Don't warn about
	a deprecated comma here.  Pass warn_comma_subscript down to
	cp_parser_expression.
	(cp_parser_expression): New bool parameter.  Warn about uses of a comma
	operator within a subscripting expression.
	(cp_parser_skip_to_closing_square_bracket): Revert to pre-r274121 state.
	(cp_parser_skip_to_closing_square_bracket_1): Remove.

2019-08-14  Jonathan Wakely  <jwakely@redhat.com>

	* name-lookup.c (get_std_name_hint): Add more entries.

2019-08-14  Paolo Carlini  <paolo.carlini@oracle.com>

	* decl2.c (grok_array_decl): Use the location of the open square
	bracket in error message about invalid types.

2019-08-14  Paolo Carlini  <paolo.carlini@oracle.com>

	* decl.c (grokdeclarator): Check here for typedef a function
	definition or a member function definition.
	(start_function): Adjust.
	(grokmethod): Likewise.

2019-08-13  Richard Sandiford  <richard.sandiford@arm.com>

	PR middle-end/91421
	* decl.c (duplicate_decls):  Use copy_decl_built_in_function.
	* pt.c (declare_integer_pack): Use set_decl_built_in_function.

2019-08-13  Marek Polacek  <polacek@redhat.com>

	PR c++/90473 - wrong code with nullptr in default argument.
	* call.c (null_ptr_cst_p): Update quote from the standard.
	* decl.c (check_default_argument): Don't return nullptr when the arg
	has side-effects.

2019-08-13  Marek Polacek  <polacek@redhat.com>

	* cp-tree.h (DECL_MUTABLE_P): Use FIELD_DECL_CHECK.

2019-08-10  Jakub Jelinek  <jakub@redhat.com>

	* parser.c (cp_parser_omp_clause_name): Parse device_type.
	(cp_parser_omp_clause_device_type): New function.
	(cp_parser_omp_all_clauses): Handle PRAGMA_OMP_CLAUSE_DEVICE_TYPE.
	(OMP_DECLARE_TARGET_CLAUSE_MASK): Add PRAGMA_OMP_CLAUSE_DEVICE_TYPE.
	(cp_parser_omp_declare_target): Handle device_type clauses.  Remove
	diagnostics for declare target with clauses nested in clause-less
	declare target declaration-definition-seq.
	* semantics.c (finish_omp_clauses): Handle OMP_CLAUSE_DEVICE_TYPE.

2019-08-09  Jakub Jelinek  <jakub@redhat.com>

	* parser.c (check_no_duplicate_clause): Simplify using
	omp_find_clause.
	(cp_parser_omp_clause_if): Fix up printing of target {enter,exit} data
	directive name modifiers.

	PR c/91401
	* parser.c (cp_parser_omp_clause_dist_schedule): Comment out the
	check_no_duplicate_clause call, instead emit a warning for duplicate
	dist_schedule clauses.

2019-08-08  Paolo Carlini  <paolo.carlini@oracle.com>

	* decl.c (grokdeclarator): Use id_loc and EXPR_LOCATION in
	a few error messages.

2019-08-08  Marek Polacek  <polacek@redhat.com>

	PR c++/87519 - bogus warning with -Wsign-conversion.
	* typeck.c (cp_build_binary_op): Use same_type_p instead of comparing
	the types directly.

	* constexpr.c (inline_asm_in_constexpr_error): New.
	(cxx_eval_constant_expression) <case ASM_EXPR>: Call it.
	(potential_constant_expression_1) <case ASM_EXPR>: Likewise.

2019-08-08  Jakub Jelinek  <jakub@redhat.com>

	* semantics.c (finish_omp_clauses): For C_ORT_OMP
	OMP_CLAUSE_USE_DEVICE_* clauses use oacc_reduction_head bitmap
	instead of generic_head to track duplicates.

2019-08-07  Marek Polacek  <polacek@redhat.com>

	PR c++/81429 - wrong parsing of constructor with C++11 attribute.
	* parser.c (cp_parser_constructor_declarator_p): Handle the scenario
	when a parameter declaration begins with [[attribute]].

2019-08-07  Marek Polacek  <polacek@redhat.com>

	PR c++/91346 - Implement P1668R1, allow unevaluated asm in constexpr.
	* constexpr.c (cxx_eval_constant_expression): Handle ASM_EXPR.
	(potential_constant_expression_1) <case ASM_EXPR>: Allow.
	* cp-tree.h (finish_asm_stmt): Adjust.
	* parser.c (cp_parser_asm_definition): Grab the locaion of "asm" and
	use it.  Change an error to a pedwarn.  Allow asm in C++2a, warn
	otherwise.
	* pt.c (tsubst_expr): Pass a location down to finish_asm_stmt.
	* semantics.c (finish_asm_stmt): New location_t parameter.  Use it.

2019-08-07  Jakub Jelinek  <jakub@redhat.com>

	* parser.c (cp_parser_omp_clause_name): Parse use_device_addr clause.
	(cp_parser_omp_all_clauses): Handle PRAGMA_OMP_CLAUSE_USE_DEVICE_ADDR.
	(OMP_TARGET_DATA_CLAUSE_MASK): Add PRAGMA_OMP_CLAUSE_USE_DEVICE_ADDR.
	(cp_parser_omp_target_data): Handle PRAGMA_OMP_CLAUSE_USE_DEVICE_ADDR
	like PRAGMA_OMP_CLAUSE_USE_DEVICE_PTR, adjust diagnostics about no
	map or use_device_* clauses.
	* semantics.c (finish_omp_clauses): For OMP_CLAUSE_USE_DEVICE_PTR
	in OpenMP, require pointer or reference to pointer type rather than
	pointer or array or reference to pointer or array type. Handle
	OMP_CLAUSE_USE_DEVICE_ADDR.
	* pt.c (tsubst_omp_clauses): Handle OMP_CLAUSE_USE_DEVICE_ADDR.

2019-08-06  Jason Merrill  <jason@redhat.com>

	PR c++/91378 - ICE with noexcept and auto return type.
	* pt.c (maybe_instantiate_noexcept): push_to_top_level.

2019-08-06  Paolo Carlini  <paolo.carlini@oracle.com>

	* decl.c (check_array_designated_initializer): Use
	cp_expr_loc_or_input_loc in one place.

2019-08-06  Jakub Jelinek  <jakub@redhat.com>

	* parser.c (cp_parser_omp_for_loop): For OMP_LOOP, ignore parallel
	clauses and predetermine iterator as lastprivate.
	* semantics.c (handle_omp_for_class_iterator): Use
	OMP_CLAUSE_LASTPRIVATE_LOOP_IV instead of
	OMP_CLAUSE_LASTPRIVATE_TASKLOOP_IV, set it for lastprivate also
	on OMP_LOOP construct.  If a clause is missing for class iterator
	on OMP_LOOP, add firstprivate clause, and if there is private
	clause, turn it into firstprivate too.
	(finish_omp_for): Formatting fix.  For OMP_LOOP, adjust
	OMP_CLAUSE_LASTPRIVATE_LOOP_IV clause CP_CLAUSE_INFO, so that it
	uses copy ctor instead of default ctor.
	* cp-gimplify.c (cp_gimplify_expr): Handle OMP_LOOP like
	OMP_DISTRIBUTE etc.
	(cp_fold_r): Likewise.
	(cp_genericize_r): Likewise.
	(cxx_omp_finish_clause): Also finish lastprivate clause with
	OMP_CLAUSE_LASTPRIVATE_LOOP_IV flag.
	* pt.c (tsubst_omp_clauses): Handle OMP_CLAUSE_BIND.
	(tsubst_omp_for_iterator): For OMP_LOOP, ignore parallel
	clauses and predetermine iterator as lastprivate.
	* constexpr.c (potential_constant_expression_1): Handle OMP_LOOP
	like OMP_DISTRIBUTE etc.

2019-08-05  Marek Polacek  <polacek@redhat.com>

	DR 2413 - typename in conversion-function-ids.
	* parser.c (cp_parser_conversion_type_id): Call
	cp_parser_type_specifier_seq with CP_PARSER_FLAGS_TYPENAME_OPTIONAL
	instead of CP_PARSER_FLAGS_NONE.

2019-08-05  Paolo Carlini  <paolo.carlini@oracle.com>

	* cp-tree.h (cp_expr_loc_or_input_loc): New.
	(cxx_incomplete_type_diagnostic): Use it.
	* call.c (build_converted_constant_expr_internal, convert_like_real,
	convert_arg_to_ellipsis, convert_for_arg_passing, build_over_call,
	build_cxx_call, perform_implicit_conversion_flags,
	initialize_reference): Likewise.
	* constexpr.c (cxx_eval_internal_function, cxx_eval_call_expression,
	eval_and_check_array_index, cxx_eval_store_expression,
	cxx_eval_statement_list, cxx_eval_loop_expr,
	cxx_eval_constant_expression, potential_constant_expression_1):
	Likewise.
	* constraint.cc (check_for_logical_overloads,
	satisfy_predicate_constraint): Likewise.
	* cp-gimplify.c (cp_gimplify_expr): Likewise.
	* cvt.c (cp_convert_to_pointer, convert_to_reference,
	cp_convert_and_check, ocp_convert, maybe_warn_nodiscard): Likewise.
	* decl.c (pop_switch): Likewise.
	* decl2.c (delete_sanity): Likewise.
	* error.c (location_of): Likewise.
	* init.c (maybe_warn_list_ctor, build_aggr_init,
	warn_placement_new_too_small, build_new_1, build_vec_init): Likewise.
	* lex.c (unqualified_name_lookup_error): Likewise.
	* parser.c (cp_parser_initializer_list, cp_parser_omp_for_cond):
	Likewise.
	* pt.c (check_for_bare_parameter_packs, check_valid_ptrmem_cst_expr,
	unify_arg_conversion, convert_nontype_argument,
	tsubst_copy_and_build, resolve_typename_type): Likewise.
	* semantics.c (maybe_convert_cond, finish_call_expr,
	cp_build_vec_convert): Likewise.
	* typeck.c (decay_conversion, rationalize_conditional_expr,
	cp_build_unary_op, build_x_compound_expr_from_list,
	maybe_warn_about_returning_address_of_local,
	maybe_warn_pessimizing_move): Likewise.
	* typeck2.c (check_narrowing, digest_init_r,
	process_init_constructor_array): Likewise.

2019-08-05  Tom Honermann  <tom@honermann.net>

	* parser.c (cp_parser_template_declaration_after_parameters): Enable
	class template argument deduction for non-type template parameters
	in literal operator templates.

2019-08-05  Marek Polacek  <polacek@redhat.com>

	PR c++/91338 - Implement P1161R3: Deprecate a[b,c].
	* parser.c (cp_parser_postfix_open_square_expression): Warn about uses
	of a comma operator within a subscripting expression.
	(cp_parser_skip_to_closing_square_bracket_1): New function, made out
	of...
	(cp_parser_skip_to_closing_square_bracket): ...this.

2019-08-05  Jason Merrill  <jason@redhat.com>

	* semantics.c (force_paren_expr): Preserve location.

2019-08-02  Marek Polacek  <polacek@redhat.com>

	PR c++/91230 - wrong error with __PRETTY_FUNCTION__ and generic lambda.
	* pt.c (value_dependent_expression_p): Consider __PRETTY_FUNCTION__
	inside a template function value-dependent.

2019-08-02  Paolo Carlini  <paolo.carlini@oracle.com>

	* tree.c (handle_nodiscard_attribute): Do not warn about nodiscard
	applied to a constructor.

2019-08-02  Martin Liska  <mliska@suse.cz>

	* decl.c (grok_op_properties):
	Mark DECL_SET_IS_OPERATOR_DELETE for user-provided delete operators.

2019-08-01  Martin Sebor  <msebor@redhat.com>

	PR c++/90947
	* decl.c (reshape_init_array_1): Avoid truncating initializer
	lists containing string literals.

2019-08-01  Marek Polacek  <polacek@redhat.com>

	PR c++/90805 - detect narrowing in case values.
	* decl.c (case_conversion): Detect narrowing in case values.

2019-07-31  Paolo Carlini  <paolo.carlini@oracle.com>

	* decl2.c (delete_sanity): Improve diagnostic locations, use
	cp_expr_loc_or_loc in four places.

2019-07-31  Jason Merrill  <jason@redhat.com>

	PR c++/90538 - multiple expansions of capture packs
	* cp-tree.h (DECLTYPE_FOR_INIT_CAPTURE): Remove.
	* lambda.c (add_capture): Copy parameter packs from init.
	(lambda_capture_field_type): Always use auto for init-capture.
	* pt.c (uses_parameter_packs): Return tree.
	(tsubst) [DECLTYPE_TYPE]: Remove init-capture handling.
	(gen_elem_of_pack_expansion_instantiation): Don't push
	local_specialization_stack.
	(prepend_one_capture): New.
	(tsubst_lambda_expr): Use it.  Don't touch local_specializations.
	(do_auto_deduction): Avoid redundant error.

	Fix copy_node of TEMPLATE_INFO.
	* cp-tree.h (struct tree_template_info): Use tree_base instead of
	tree_common.  Add tmpl and args fields.
	(TI_TEMPLATE, TI_ARGS): Adjust.

2019-07-30  Martin Liska  <mliska@suse.cz>

	PR tree-optimization/91270
	* tree-ssa-dce.c (propagate_necessity): Mark 2nd argument
	of delete operator as needed.

2019-07-25  Martin Liska  <mliska@suse.cz>
	    Dominik Infuhr  <dominik.infuehr@theobroma-systems.com>

	PR c++/23383
	* decl.c (cxx_init_decl_processing): Mark delete operators
	with DECL_SET_IS_OPERATOR_DELETE.

2019-07-25  Martin Liska  <mliska@suse.cz>

	* decl.c (duplicate_decls): Use new macros
	(e.g. DECL_SET_LAMBDA_FUNCTION and DECL_LAMBDA_FUNCTION_P).
	(cxx_init_decl_processing): Likewise.
	(grok_op_properties): Likewise.
	* parser.c (cp_parser_lambda_declarator_opt): Likewise.

2019-07-24  Martin Sebor  <msebor@redhat.com>

	PR driver/80545
	* decl.c (finish_function): Use lang_mask.

2019-07-20  Jason Merrill  <jason@redhat.com>

	* cp-tree.h (ovl_iterator::using_p): A USING_DECL by itself was also
	introduced by a using-declaration.

2019-07-20  Jason Merrill  <jason@redhat.com>

	Reduce memory consumption for push/pop_access_scope.
	* name-lookup.c (leave_scope): Do add class levels other than
	previous_class_level to free_binding_level.
	(invalidate_class_lookup_cache): Move from class.c, add to
	free_binding_level.
	* pt.c (saved_access_scope): Change from list to vec.

2019-07-20  Jakub Jelinek  <jakub@redhat.com>

	* cp-tree.h (OMP_FOR_GIMPLIFYING_P): Use OMP_LOOPING_CHECK
	instead of OMP_LOOP_CHECK.
	* parser.c (cp_parser_omp_clause_name): Handle bind clause.
	(cp_parser_omp_clause_bind): New function.
	(cp_parser_omp_all_clauses): Handle PRAGMA_OMP_CLAUSE_BIND.
	(OMP_LOOP_CLAUSE_MASK): Define.
	(cp_parser_omp_loop): New function.
	(cp_parser_omp_parallel, cp_parser_omp_teams): Handle parsing of
	loop combined with parallel or teams.
	(cp_parser_omp_construct): Handle PRAGMA_OMP_LOOP.
	(cp_parser_pragma): Likewise.
	* pt.c (tsubst_expr): Handle OMP_LOOP.
	* semantics.c (finish_omp_clauses): Handle OMP_CLAUSE_BIND.

2019-07-19  Jason Merrill  <jason@redhat.com>

	PR c++/90101 - dependent class non-type parameter.
	* pt.c (invalid_nontype_parm_type_p): Check for dependent class type.

2019-07-18  Jason Merrill  <jason@redhat.com>

	PR c++/90098 - partial specialization and class non-type parms.
	PR c++/90099
	PR c++/90101
	* call.c (build_converted_constant_expr_internal): Don't copy.
	* pt.c (process_partial_specialization): Allow VIEW_CONVERT_EXPR
	around class non-type parameter.
	(unify) [TEMPLATE_PARM_INDEX]: Ignore cv-quals.

2019-07-16  Jason Merrill  <jason@redhat.com>

	* parser.c (make_location): Add overload taking cp_lexer* as last
	parameter.

	* parser.c (cp_parser_simple_type_specifier): Separate tentative
	parses for optional type-spec and CTAD.

	* parser.c (cp_parser_nested_name_specifier_opt): If the token is
	already CPP_NESTED_NAME_SPECIFIER, leave it alone.

2019-07-12  Jakub Jelinek  <jakub@redhat.com>

	* parser.c (cp_parser_omp_clause_name): Handle order clause.
	(cp_parser_omp_clause_order): New function.
	(cp_parser_omp_all_clauses): Handle PRAGMA_OMP_CLAUSE_ORDER.
	(OMP_SIMD_CLAUSE_MASK, OMP_FOR_CLAUSE_MASK): Add
	PRAGMA_OMP_CLAUSE_ORDER.
	* semantics.c (finish_omp_clauses): Handle OMP_CLAUSE_ORDER.
	* pt.c (tsubst_omp_clauses): Likewise.

2019-07-10  Paolo Carlini  <paolo.carlini@oracle.com>

	* decl.c (get_type_quals,
	smallest_type_location (const cp_decl_specifier_seq*)): New.
	(check_tag_decl): Use smallest_type_location in error_at about
	multiple types in one declaration.
	(grokdeclarator): Use locations[ds_complex] in error_at about
	complex invalid; use locations[ds_storage_class] in error_at
	about static cdtor; use id_loc in error_at about flexible
	array member in union; use get_type_quals.

2019-07-09  Martin Sebor  <msebor@redhat.com>

	PR c++/61339
	* cp-tree.h: Change class-key of PODs to struct and others to class.
	* search.c: Same.
	* semantics.c (finalize_nrv_r): Same.

2019-07-09  Martin Sebor  <msebor@redhat.com>

	PR c++/61339
	* constexpr.c (cxx_eval_call_expression): Change class-key from class
	to struct and vice versa to match convention and avoid -Wclass-is-pod
	and -Wstruct-no-pod.
	* constraint.cc (get_concept_definition): Same.
	* cp-tree.h: Same.
	* cxx-pretty-print.h: Same.
	* error.c: Same.
	* logic.cc (term_list::replace): Same.
	* name-lookup.c (find_local_binding): Same.
	* pt.c (tsubst_binary_right_fold): Same.
	* search.c (field_accessor_p): Same.
	* semantics.c (expand_or_defer_fn): Same.

2019-07-08  Jakub Jelinek  <jakub@redhat.com>

	PR c++/91110
	* decl2.c (cp_omp_mappable_type_1): Don't emit any note for
	error_mark_node type.

2019-07-05  Jakub Jelinek  <jakub@redhat.com>

	PR c++/67184
	PR c++/69445
	* call.c (build_new_method_call_1): Remove set but not used variable
	binfo.

2019-07-05  Paolo Carlini  <paolo.carlini@oracle.com>

	PR c++/67184 (again)
	PR c++/69445
	* call.c (build_over_call): Devirtualize user-defined operators
	coming from a base too.
	(build_new_method_call_1): Do not devirtualize here.

2019-07-04  Marek Polacek  <polacek@redhat.com>

	DR 1813
	PR c++/83374 - __is_standard_layout wrong for a class with repeated
	bases.
	* class.c (check_bases): Set CLASSTYPE_NON_STD_LAYOUT for a class if
	CLASSTYPE_REPEATED_BASE_P is true.

2019-07-04  Andrew Stubbs  <ams@codesourcery.com>

	* cp-tree.h (cp_omp_emit_unmappable_type_notes): New prototype.
	* decl.c (cp_finish_decl): Call cp_omp_emit_unmappable_type_notes.
	* decl2.c (cp_omp_mappable_type): Move contents to ...
	(cp_omp_mappable_type_1): ... here and add note output.
	(cp_omp_emit_unmappable_type_notes): New function.
	* semantics.c (finish_omp_clauses): Call
	cp_omp_emit_unmappable_type_notes in four places.

2019-07-03  Martin Liska  <mliska@suse.cz>

	* call.c (build_new_op_1): Remove dead assignemts.
	* typeck.c (cp_build_binary_op): Likewise.

2019-06-27  Jason Merrill  <jason@redhat.com>

	PR c++/55442 - memory-hog with highly recursive constexpr.
	* constexpr.c (push_cx_call_context): Return depth.
	(cxx_eval_call_expression): Don't cache past constexpr_cache_depth.

2019-06-27  Jan Hubicka  <jh@suse.cz>

	* class.c (layout_class_type): Set TYPE_CXX_ODR_P for as-base
	type copy.

2019-06-27  Martin Liska  <mliska@suse.cz>

	* class.c (adjust_clone_args): Remove obviously
	dead assignments.
	(dump_class_hierarchy_r): Likewise.
	* decl.c (check_initializer): Likewise.
	* parser.c (cp_parser_lambda_expression): Likewise.
	* pt.c (unify_bound_ttp_args): Likewise.
	(convert_template_argument): Likewise.
	* rtti.c (build_headof): Likewise.
	* typeck.c (convert_for_initialization): Likewise.

2019-06-25  Jason Merrill  <jason@redhat.com>

	PR c++/70462 - unnecessary base ctor variant with final.
	* optimize.c (populate_clone_array): Skip base variant if
	CLASSTYPE_FINAL.
	(maybe_clone_body): We don't need an alias if we are only defining
	one clone.

	* class.c (resolves_to_fixed_type_p): Check CLASSTYPE_FINAL.

2019-06-25  Jakub Jelinek  <jakub@redhat.com>

	PR c++/90969
	* constexpr.c (cxx_eval_array_reference): Don't look through VCE from
	vector type if lval.

2019-06-25  Jozef Lawrynowicz  <jozef.l@mittosystems.com>

	* lex.c (init_reswords): Create keyword for "__intN__" type.
	* cp-tree.h (cp_decl_specifier_seq): New bitfield "int_n_alt".
	* decl.c (grokdeclarator): Don't pedwarn about "__intN" ISO
	C incompatibility if alternate "__intN__" form is used.
	* parser.c (cp_parser_simple_type_specifier): Set
	decl_specs->int_n_alt if "__intN__" form is used.

2019-06-24  Jan Hubicka  <jh@suse.cz>

	* lex.c (cxx_make_type): Set TYPE_CXX_ODR_P.

2019-06-24  Jason Merrill  <jason@redhat.com>

	* class.c (layout_class_type): Don't use a separate
	CLASSTYPE_AS_BASE if it's the same size.

2019-06-23  Marek Polacek  <polacek@redhat.com>

	* call.c (convert_default_arg): Use DEFERRED_PARSE instead of
	DEFAULT_ARG.
	* cp-objcp-common.c (cp_tree_size): Likewise.  Use tree_deferred_parse
	instead of tree_default_arg.
	* cp-tree.def: Rename DEFAULT_ARG to DEFERRED_PARSE.
	* cp-tree.h: Rename DEFARG_TOKENS to DEFPARSE_TOKENS.  Rename
	DEFARG_INSTANTIATIONS to DEFPARSE_INSTANTIATIONS.  Rename
	tree_default_arg to tree_deferred_parse.
	(UNPARSED_NOEXCEPT_SPEC_P): Use DEFERRED_PARSE instead of DEFAULT_ARG.
	(cp_tree_node_structure_enum): Rename TS_CP_DEFAULT_ARG to
	TS_CP_DEFERRED_PARSE.
	(lang_tree_node): Rename tree_default_arg to tree_deferred_parse.
	Rename default_arg to deferred_parse.  Use TS_CP_DEFERRED_PARSE instead
	of TS_CP_DEFAULT_ARG.
	(defarg_location): Remove declaration.
	(defparse_location): Add declaration.
	* decl.c (grokfndecl): Use DEFERRED_PARSE instead of DEFAULT_ARG.
	Call defparse_location instead of defarg_location.
	(check_default_argument): Use DEFERRED_PARSE instead of DEFAULT_ARG.
	(cp_tree_node_structure): Likewise.  Use TS_CP_DEFERRED_PARSE instead
	of TS_CP_DEFAULT_ARG.
	* decl2.c (grokfield): Use DEFERRED_PARSE instead of DEFAULT_ARG.
	* error.c (dump_expr): Likewise.
	(location_of): Likewise.
	* init.c (get_nsdmi): Likewise.
	* parser.c (cp_parser_save_noexcept): Likewise.  Use DEFPARSE_TOKENS
	instead of DEFARG_TOKENS.
	(cp_parser_late_noexcept_specifier): Likewise.
	(cp_parser_late_parse_one_default_arg): Use DEFPARSE_TOKENS instead
	of DEFARG_TOKENS.
	(cp_parser_late_parsing_default_args): Use DEFERRED_PARSE instead of
	DEFAULT_ARG.  Use DEFPARSE_INSTANTIATIONS instead of
	DEFARG_INSTANTIATIONS.
	(cp_parser_cache_defarg): Use DEFERRED_PARSE instead of DEFAULT_ARG.
	Use DEFPARSE_TOKENS instead of DEFARG_TOKENS.  Use
	DEFPARSE_INSTANTIATIONS instead of DEFARG_INSTANTIATIONS.
	(defparse_location): Renamed from defarg_location.
	* pt.c (tsubst_default_argument): Use DEFERRED_PARSE instead of
	DEFAULT_ARG.
	(tsubst_arg_types): Likewise.
	(dependent_type_p_r): Likewise.
	* tree.c (cp_tree_equal): Likewise.
	(cp_walk_subtrees): Likewise.
	* typeck.c (convert_arguments): Likewise.

2019-06-22  Marek Polacek  <polacek@redhat.com>

	PR c++/86476 - noexcept-specifier is a complete-class context.
	PR c++/52869
	* cp-tree.def (DEFAULT_ARG): Update commentary.
	* cp-tree.h (UNPARSED_NOEXCEPT_SPEC_P):	New macro.
	(tree_default_arg): Use tree_base instead of tree_common.
	(do_push_parm_decls, maybe_check_overriding_exception_spec): Declare.
	* decl.c (do_push_parm_decls): New function, broken out of...
	(store_parm_decls): ...here.  Call it.
	* except.c (nothrow_spec_p): Accept DEFAULT_ARG in the assert.
	* parser.c (cp_parser_noexcept_specification_opt,
	cp_parser_late_noexcept_specifier, noexcept_override_late_checks):
	Forward-declare.
	(unparsed_noexcepts): New macro.
	(push_unparsed_function_queues): Update initializer.
	(cp_parser_direct_declarator): Pass FRIEND_P to
	cp_parser_exception_specification_opt.
	(inject_parm_decls): New.
	(pop_injected_parms): New.
	(cp_parser_class_specifier_1): Implement delayed parsing of
	noexcept-specifiers.
	(cp_parser_save_noexcept): New.
	(cp_parser_late_noexcept_specifier): New.
	(noexcept_override_late_checks): New.
	(cp_parser_noexcept_specification_opt): Add FRIEND_P parameter.  Call
	cp_parser_save_noexcept instead of the normal processing if needed.
	(cp_parser_exception_specification_opt): Add FRIEND_P parameter and
	pass it to cp_parser_noexcept_specification_opt.
	(cp_parser_save_member_function_body): Fix comment.
	(cp_parser_save_default_args): Maybe save the noexcept-specifier to
	post process.
	(cp_parser_transaction): Update call to
	cp_parser_noexcept_specification_opt.
	(cp_parser_transaction_expression): Likewise.
	* parser.h (cp_unparsed_functions_entry): Add new field to carry
	a noexcept-specifier.
	* pt.c (dependent_type_p_r): Handle unparsed noexcept expression.
	* search.c (maybe_check_overriding_exception_spec): New function, broken
	out of...
	(check_final_overrider): ...here.  Call
	maybe_check_overriding_exception_spec.
	* tree.c (canonical_eh_spec): Handle UNPARSED_NOEXCEPT_SPEC_P.
	(cp_tree_equal): Handle DEFAULT_ARG.

	PR c++/90881 - bogus -Wunused-value in unevaluated context.
	* cvt.c (convert_to_void): Don't emit unused warnings in
	an unevaluated context.

2019-06-22  Paolo Carlini  <paolo.carlini@oracle.com>

	* decl.c (grokdeclarator): Use id_loc, typespec_loc, and
	locations[ds_storage_class] in a few additional places.

2019-06-21  Paolo Carlini  <paolo.carlini@oracle.com>

	PR c++/90909
	Revert:
	2019-05-21  Paolo Carlini  <paolo.carlini@oracle.com>

	PR c++/67184
	PR c++/69445
	* call.c (build_over_call): Devirtualize when the final overrider
	comes from the base.

2019-06-21  Marek Polacek  <polacek@redhat.com>

	PR c++/61490 - qualified-id in friend function definition.
	* decl.c (grokdeclarator): Diagnose qualified-id in friend function
	definition.  Improve location for diagnostics of friend functions.

	PR c++/60223 - ICE with T{} in non-deduced context.
	* pt.c (unify): Allow COMPOUND_LITERAL_P in a non-deduced context.

	PR c++/64235 - missing syntax error with invalid alignas.
	* parser.c (cp_parser_std_attribute_spec): Commit to tentative parse
	if there's a missing close paren.

	PR c++/90490 - fix decltype issues in noexcept-specifier.
	* except.c (build_noexcept_spec): Call
	instantiate_non_dependent_expr_sfinae before
	build_converted_constant_expr instead of calling
	instantiate_non_dependent_expr after it.  Add
	processing_template_decl_sentinel.

2019-06-21  Jakub Jelinek  <jakub@redhat.com>

	PR c++/90950
	* semantics.c (finish_omp_clauses): Don't reject references to
	incomplete types if processing_template_decl.

2019-06-19  Marek Polacek  <polacek@redhat.com>

	PR c++/60364 - noreturn after first decl not diagnosed.
	* decl.c (duplicate_decls): Give an error when a function is
	declared [[noreturn]] after its first declaration.
	* parser.c (cp_parser_std_attribute): Don't treat C++11 noreturn
	attribute as equivalent to GNU's.
	* tree.c (std_attribute_table): Add noreturn.

2019-06-19  Jakub Jelinek  <jakub@redhat.com>

	* cp-gimplify.c (cp_genericize_r): Handle OMP_CLAUSE_{IN,EX}CLUSIVE
	like OMP_CLAUSE_SHARED.

2019-06-18  Jason Merrill  <jason@redhat.com>

	* constexpr.c (cxx_eval_store_expression): Delay target evaluation.

2019-06-18  Jason Merrill  <jason@redhat.com>

	* constexpr.c (eval_and_check_array_index): Split out from...
	(cxx_eval_array_reference): ...here.
	(cxx_eval_store_expression): Use it here, too.
	(diag_array_subscript): Take location.  Strip location wrapper.

2019-06-18  Jason Merrill  <jason@redhat.com>

	* constexpr.c (cxx_eval_constant_expression): Handle conversion from
	and then to the same type.

2019-06-18  Jason Merrill  <jason@redhat.com>

	* constexpr.c (unshare_constructor): Add MEM_STAT_DECL.

2019-06-17  Jakub Jelinek  <jakub@redhat.com>

	* semantics.c (finish_omp_clauses): For OMP_CLAUSE_REDUCTION_INSCAN
	set need_copy_assignment.

2019-06-17  Marek Polacek  <polacek@redhat.com>

	PR c++/83820 - excessive attribute arguments not detected.
	* parser.c (cp_parser_std_attribute): Detect excessive arguments.

2019-06-17  Nathan Sidwell  <nathan@acm.org>

	PR c++/90754
	* name-lookup.c (lookup_type_scope_1): Calll qualify_lookup before
	checking context.

2019-06-14  Marek Polacek  <polacek@redhat.com>

	PR c++/90884 - stray note with -Wctor-dtor-privacy.
	* class.c (maybe_warn_about_overly_private_class): Guard the call to
	inform.

2019-06-12  Jason Merrill  <jason@redhat.com>

	PR c++/85552 - wrong instantiation of dtor for DMI.
	* typeck2.c (digest_nsdmi_init): Set tf_no_cleanup for direct-init.

2019-06-13  Paolo Carlini  <paolo.carlini@oracle.com>

	* decl.c (grokdeclarator): Use id_loc in five additional places
	in the last part of the function.

2019-06-13  Paolo Carlini  <paolo.carlini@oracle.com>

	* decl.c (grokdeclarator): Move further up the declaration of
	id_loc, use it immediately, update its value after the loop
	over declarator, use it again in the final part of function;
	improve locations of error messages about multiple data types
	and conflicting specifiers.

2019-06-13  Richard Biener  <rguenther@suse.de>

	PR c++/90801
	* typeck2.c (split_nonconstant_init_1): Properly count
	num_split_elts, optimize single constructor elt removal.

2019-06-12  Marek Polacek  <polacek@redhat.com>

	PR c++/66999 - 'this' captured by reference.
	* parser.c (cp_parser_lambda_introducer): Reject `&this'.  Use
	cp_lexer_nth_token_is instead of cp_lexer_peek_nth_token.

	PR c++/90825 - endless recursion when evaluating sizeof.
	PR c++/90832 - endless recursion when evaluating sizeof.
	* constexpr.c (cxx_eval_constant_expression): Don't recurse on the
	result of fold_sizeof_expr if is returns a SIZEOF_EXPR.
	* typeck.c (cxx_sizeof_expr): Only return a SIZEOF_EXPR if the operand
	is instantiation-dependent.

	PR c++/90736 - bogus error with alignof.
	* constexpr.c (adjust_temp_type): Use cv_unqualified type.

2019-06-11  Matthew Beliveau  <mbelivea@redhat.com>

	PR c++/90449 - add -Winaccessible-base option.
	* class.c (warn_about_ambiguous_bases): Changed name to:
	maybe_warn_about_inaccessible_bases.
	(maybe_warn_about_inaccessible_bases): Implemented new
	Winaccessible-base warning option for both direct and virtual
	base warnings.
	(layout_class_type): Call to warn_about_ambiguous_bases changed to fit
	new name.

2019-06-11  Richard Biener  <rguenther@suse.de>

	PR c++/90801
	* typeck2.c (split_nonconstant_init_1): Avoid ordered remove
	from CONSTRUCTOR by marking to remove elements and doing all
	of them in a O(n) scan.

2019-06-11  Jakub Jelinek  <jakub@redhat.com>

	PR c++/90810
	* init.c (constant_value_1): Handle VECTOR_CST DECL_INITIAL for
	!DECL_INITIALIZED_BY_CONSTANT_EXPRESSION_P decls like CONSTRUCTOR.

2019-06-11  Martin Liska  <mliska@suse.cz>

	PR c++/87847
	* pt.c (init_template_processing): Disable hash table
	sanitization for decl_specializations and type_specializations.

2019-06-10  Jason Merrill  <jason@redhat.com>

	* constexpr.c (free_constructor): New.
	(cxx_eval_call_expression): Free parameter value CONSTRUCTORs.

	* constexpr.c (unshare_constructor): Only unshare if T is itself a
	CONSTRUCTOR.
	(cxx_eval_call_expression): Don't call it on the result here.

	Reduce constexpr_call memory consumption.
	* constexpr.c (cxx_bind_parameters_in_call): Use TREE_VEC rather
	than TREE_LIST.
	(constexpr_call_hasher::equal, cxx_bind_parameters_in_call)
	(cxx_eval_call_expression): Adjust.

2019-06-10  Jakub Jelinek  <jakub@redhat.com>

	* parser.c (cp_parser_omp_clause_reduction): Don't sorry_at on inscan
	reductions.
	(cp_parser_omp_scan_loop_body): New function.
	(cp_parser_omp_for_loop): Call cp_parser_omp_scan_loop_body if there
	are inscan reduction clauses.
	(cp_parser_pragma): Reject PRAGMA_OMP_SCAN.
	* semantics.c (finish_omp_clauses): Reject mixing inscan with
	non-inscan reductions on the same construct, or inscan reductions with
	ordered or schedule clauses, or inscan array reductions.
	* pt.c (tsubst_omp_clauses): Handle OMP_CLAUSE_{IN,EX}CLUSIVE.
	(tsubst_expr): Handle OMP_SCAN.

2019-06-07  Jason Merrill  <jason@redhat.com>

	* constexpr.c (cxx_eval_constant_expression): Call
	STRIP_ANY_LOCATION_WRAPPER early.
	[CONVERT_EXPR]: Don't build anything for conversion to void.
	[ADDR_EXPR]: ggc_free unused ADDR_EXPR.

2019-06-05  Martin Sebor  <msebor@redhat.com>

	PR c/90737
	* typeck.c (maybe_warn_about_returning_address_of_local): Only
	consider functions returning pointers as candidates for
	-Wreturn-local-addr.

2019-06-05  Paolo Carlini  <paolo.carlini@oracle.com>

	* decl.c (smallest_type_location): New.
	(check_special_function_return_type): Use it.
	(grokdeclarator): Lkewise.

2019-06-05  Paolo Carlini  <paolo.carlini@oracle.com>

	* decl.c (grokdeclarator): Use locations[ds_friend]
	in one place.

2019-06-05  Martin Sebor  <msebor@redhat.com>

	* call.c (build_conditional_expr_1): Adjust quoting and hyphenation.
	(convert_like_real): Same.
	(convert_arg_to_ellipsis): Same.
	* constexpr.c (diag_array_subscript): Same.
	* constraint.cc (diagnose_trait_expression): Same.
	* cvt.c (ocp_convert): Same.
	* decl.c (start_decl): Same.
	(check_for_uninitialized_const_var): Same.
	(grokfndecl): Same.
	(check_special_function_return_type): Same.
	(finish_enum_value_list): Same.
	(start_preparsed_function): Same.
	* parser.c (cp_parser_decl_specifier_seq): Same.
	* typeck.c (cp_build_binary_op): Same.
	(build_static_cast_1): Same.

2019-06-04  Nina Dinka Ranns  <dinka.ranns@gmail.com>

	PR c++/63149 - Wrong auto deduction from braced-init-list.
	* pt.c (listify_autos): use non cv qualified auto_node in
	std::initializer_list<auto>.

2019-06-04  Paolo Carlini  <paolo.carlini@oracle.com>

	* decl.c (grokdeclarator): Use declarator->id_loc in two
	additional places.

2019-06-04  Nathan Sidwell  <nathan@acm.org>

	* name-lookup.c (lookup_type_scope_1): Reimplement, handle local
	and namespace scopes separately.

2019-06-04  Harald van Dijk  <harald@gigawatt.nl>

	PR c++/60531 - Wrong error about unresolved overloaded function
	* typeck.c (cp_build_binary_op): See if overload can be resolved.
	(cp_build_unary_op): Ditto.

2019-06-04  Jason Merrill  <jason@redhat.com>

	Reduce accumulated garbage in constexpr evaluation.
	* constexpr.c (cxx_eval_call_expression): ggc_free any bindings we
	don't save.
	(cxx_eval_increment_expression): ggc_free the MODIFY_EXPR after
	evaluating it.

2019-06-04  Jakub Jelinek  <jakub@redhat.com>

	* cp-tree.h (CP_OMP_CLAUSE_INFO): Allow for any clauses up to _condvar_
	instead of only up to linear.

2019-06-03  Paolo Carlini  <paolo.carlini@oracle.com>

	* parser.c (cp_parser_unqualified_id): Use build_min_nt_loc in
	five places.

2019-06-01  Ville Voutilainen  <ville.voutilainen@gmail.com>

	PR c++/85254
	* class.c (fixup_type_variants): Handle CLASSTYPE_FINAL.

2019-05-31  Nathan Sidwell  <nathan@acm.org>

	* cp-tree.h (IDENTIFIER_LAMBDA_P): New.
	(TYPE_ANON_P): New.
	(LAMBDA_TYPE_P, TYPE_UNNAMED_P): Likewise.
	(LAMBDANAME_PREFIX, LAMBDANAME_FORMAT): Delete.
	(make_lambda_name): Don't declare.
	* error.c (dump_aggr_type): Check for lambdas before other
	anonymous names.
	* lambda.c (begin_lambda_type): Use make_anon_name.
	* cp-lang.c (cxx_dwarf_name): Lambda names smell anonymous.
	* mangle.c (write_local_name): Likewise.
	* name-lookup.c (lambda_cnt, make_lambda_name): Delete.

2019-05-30  Marek Polacek  <polacek@redhat.com>

	* cp-tree.h (TYPE_HAS_NONTRIVIAL_DESTRUCTOR): Fix a typo.

2019-05-31  Paolo Carlini  <paolo.carlini@oracle.com>

	* decl.c (grokdeclarator): Use declarator->id_loc in five
	error_at calls.

2019-05-29  Jakub Jelinek  <jakub@redhat.com>

	PR c++/90598
	* tree.c (lvalue_kind): Return clk_none for expressions with
	with VOID_TYPE_P.

2019-05-29  Paolo Carlini  <paolo.carlini@oracle.com>

	PR c++/89875
	* parser.c (cp_parser_sizeof_operand): When the type-id production
	did not work out commit to the tentative parse.

2019-05-29  Jakub Jelinek  <jakub@redhat.com>

	P1091R3 - Extending structured bindings to be more like var decls
	P1381R1 - Reference capture of structured bindings
	* decl.c (cp_maybe_mangle_decomp): Handle TREE_STATIC decls even at
	function scope.
	(cp_finish_decomp): Copy over various decl properties from decl to
	v[i] in the tuple case.
	(grokdeclarator): Allow static, thread_local and __thread for C++2a
	and use pedwarn instead of error for older standard revisions.
	Make other structured binding diagnostic messages more i18n friendly.

2019-05-28  Nathan Sidwell  <nathan@acm.org>

	* decl.c (duplicate_decls): Assert a template newdecl has no
	specializations.

2019-05-28  Marek Polacek  <polacek@redhat.com>

	PR c++/90548 - ICE with generic lambda and empty pack.
	* pt.c (tsubst_copy_and_build): Handle pack expansion properly.

2019-05-28  Nathan Sidwell  <nathan@acm.org>

	* cp-tree.h (make_anon_name): Drop declaration.
	(TYPE_UNNAMED_P): Use IDENTIFIER_ANON_P.
	* cp-lang.c (cxx_dwarf_name): Likewise.
	* class.c (find_flexarrays): Likewise.
	* decl.c (name_unnamed_type, xref_tag_1): Likewise.
	* error.c (dump_aggr_type): Likewise.
	* pt.c (push_template_decl_real): Likewise.
	* name-lookup.c (consider_binding_level): Likewise.
	(anon_cnt, make_anon_name): Delete.

2019-05-25  Marek Polacek  <polacek@redhat.com>

	PR c++/90572 - wrong disambiguation in friend declaration.
	* parser.c (cp_parser_constructor_declarator_p): Don't allow missing
	typename for friend declarations.

2019-05-23  Jonathan Wakely  <jwakely@redhat.com>

	* cp-tree.h (CP_AGGREGATE_TYPE_P): Fix whitespace.

	* init.c (std_placement_new_fn_p): Remove outdated TODO comment that
	was resolved by r254694.

2019-05-22  Jason Merrill  <jason@redhat.com>

	PR c++/20408 - unnecessary code for empty struct.
	* call.c (build_call_a): Use simple_empty_class_p.

	PR c++/86485 - -Wmaybe-unused with empty class ?:
	* cp-gimplify.c (simple_empty_class_p): Also true for MODIFY_EXPR.

2019-05-21  Paolo Carlini  <paolo.carlini@oracle.com>

	* parser.c (cp_parser_template_declaration_after_parameters): Use
	DECL_SOURCE_LOCATION in literal operator template errors.

2019-05-21  Paolo Carlini  <paolo.carlini@oracle.com>

	PR c++/67184
	PR c++/69445
	* call.c (build_over_call): Devirtualize when the final overrider
	comes from the base.

2019-05-21  Nathan Sidwell  <nathan@acm.org>

	* name-lookup.c (do_nonmember_using_decl): Drop INSERT_P
	parameter.  Document.
	(finish_nonmember_using_decl): Adjust do_nonmember_using_decl
	calls.  Remove stray FIXME comment.

	* name-lookup.h (struct cp_binding_level): Drop usings field.
	(finish_namespace_using_decl, finish_local_using_decl): Replace with ...
	(finish_nonmember_using_decl): ... this.
	* name-lookup.c (push_using_decl_1, push_using_decl):
	(do_nonmember_using_decl): ... here.  Add INSERT_P arg.  Reimplement.
	(validate_nonmember_using_decl, finish_namespace_using_decl)
	(finish_local_using_decl): Replace with ...
	(finish_nonmember_using_decl): ... this.  Drop DECL parm.
	* parser.c (cp_parser_using_declaration): Don't do lookup here.
	* pt.c (tsubst_expr): Do not do using decl lookup here.

2019-05-21  Eric Botcazou  <ebotcazou@adacore.com>

	* decl2.c (cpp_check) <IS_ASSIGNMENT_OPERATOR>: New case.

2019-05-20  Marek Polacek  <polacek@redhat.com>

	CWG 2094 - volatile scalars are trivially copyable.
	PR c++/85679
	* tree.c (trivially_copyable_p): Don't check CP_TYPE_VOLATILE_P for
	scalar types.

2019-05-20  Marek Polacek  <polacek@redhat.com>

	* pt.c (convert_template_argument): Add a diagnostic for the
	[temp.arg]/2 ambiguity case.

	* name-lookup.c (finish_using_directive): Don't issue inform() if the
	warning didn't trigger.  Add quoting.  Tweak the inform message.

2019-05-20  Paolo Carlini  <paolo.carlini@oracle.com>

	* cp-tree.h: Remove remnants of CONV_NONCONVERTING.

2019-05-20  Nathan Sidwell  <nathan@acm.org>

	* name-lookup.c (finish_namespace_using_directive)
	(finish_local_using_directive): Merge to ...
	(finish_using_directive): ... here.  Handle both contexts.
	* name-lookup.h (finish_namespace_using_directive)
	(finish_local_using_directive): Replace with ...
	(finish_using_directive): ... this.
	* parser.c (cp_parser_using_directive): Adjust.
	* pt.c (tsubst_expr): Likewise.

	* cp-tree.h (struct lang_decl_ns): Remove usings field.
	(DECL_NAMESPACE_USING): Delete.
	* name-lookup.c (name_lookup::search_usings): Use namespace's
	binding scope.
	(name_lookup::queue_namespae): Likewise.
	(finish_namespace_using_directive, push_namespace): Likewise.
	(has_using_namespace_std_directive): Just search the entire
	binding stack.

2019-05-20  Jonathan Wakely  <jwakely@redhat.com>

	PR c++/90532 Ensure __is_constructible(T[]) is false
	* method.c (is_xible_helper): Return error_mark_node for construction
	of an array of unknown bound.

2019-05-17  Thomas Schwinge  <thomas@codesourcery.com>

	PR c++/89433
	* parser.c (cp_finalize_oacc_routine): Rework checking if already
	marked with an OpenACC 'routine' directive.

	PR c++/89433
	* parser.c (cp_parser_oacc_routine)
	(cp_parser_late_parsing_oacc_routine): Normalize order of clauses.
	(cp_finalize_oacc_routine): Call oacc_verify_routine_clauses.

	PR c++/89433
	* parser.c (cp_finalize_oacc_routine): Refer to OpenACC 'routine'
	clauses from "omp declare target" attribute.

2019-05-16  Martin Sebor  <msebor@redhat.com>

	* call.c (print_z_candidate): Wrap diagnostic text in a gettext
	macro.  Adjust.
	(print_z_candidates): Same.
	(build_conditional_expr_1): Quote keywords, operators, and types
	in diagnostics.
	(build_op_delete_call): Same.
	(maybe_print_user_conv_context): Wrap diagnostic text in a gettext
	macro.
	(convert_like_real): Same.
	(convert_arg_to_ellipsis): Quote keywords, operators, and types
	in diagnostics.
	(build_over_call): Same.
	(joust): Break up an overlong line.  Wrap diagnostic text in a gettext
	macro.
	* constexpr.c (cxx_eval_check_shift_p): Spell out >= in English.
	(cxx_eval_constant_expression): Quote keywords, operators, and types
	in diagnostics.
	(potential_constant_expression_1): Same.
	* cp-gimplify.c (cp_genericize_r): Same.
	* cvt.c (maybe_warn_nodiscard): Quote keywords, operators, and types
	in diagnostics.
	(type_promotes_to): Same.
	* decl.c (check_previous_goto_1): Same.
	(check_goto): Same.
	(start_decl): Same.
	(cp_finish_decl): Avoid parenthesizing a sentence for consistency.
	(grok_op_properties): Quote keywords, operators, and types
	in diagnostics.
	* decl2.c (grokfield): Same.
	(coerce_delete_type): Same.
	* except.c (is_admissible_throw_operand_or_catch_parameter): Same.
	* friend.c (do_friend): Quote C++ tokens.
	* init.c (build_new_1): Quote keywords, operators, and types
	in diagnostics.
	(build_vec_delete_1): Same.
	(build_delete): Same.
	* lex.c (parse_strconst_pragma): Same.
	(handle_pragma_implementation): Same.
	(unqualified_fn_lookup_error): Same.
	* mangle.c (write_type): Same.
	* method.c (defaulted_late_check): Avoid two consecutive punctuators.
	* name-lookup.c (cp_binding_level_debug): Remove a trailing newline.
	(pop_everything): Same.
	* parser.c (cp_lexer_start_debugging): Quote a macro name.
	in a diagnostic
	(cp_lexer_stop_debugging): Same.
	(cp_parser_userdef_numeric_literal): Quote a C++ header name
	in a diagnostic.
	(cp_parser_nested_name_specifier_opt): Quote keywords, operators,
	and types in diagnostics.
	(cp_parser_question_colon_clause): Same.
	(cp_parser_asm_definition): Same.
	(cp_parser_init_declarator): Same.
	(cp_parser_template_declaration_after_parameters): Avoid capitalizing
	a sentence in a diagnostic.
	(cp_parser_omp_declare_reduction): Quote keywords, operators, and types
	in diagnostics.
	(cp_parser_transaction): Same.
	* pt.c (maybe_process_partial_specialization): Replace second call
	to permerror with inform for consistency with other uses.
	(expand_integer_pack): Quote keywords, operators, and types
	in diagnostics.
	* rtti.c (get_typeid): Quote keywords, operators, and types
	in diagnostics.
	(build_dynamic_cast_1): Same.
	* semantics.c (finish_asm_stmt): Same.
	(finish_label_decl): Same.
	(finish_bases): Same.
	(finish_offsetof): Same.
	(cp_check_omp_declare_reduction): Same.
	(finish_decltype_type): Same.
	* tree.c (handle_init_priority_attribute): Same.  Add detail
	to diagnostics.
	(maybe_warn_zero_as_null_pointer_constant): Same.
	* typeck.c (cp_build_binary_op): Quote keywords, operators, and types
	in diagnostics.
	(cp_build_unary_op): Same.
	(check_for_casting_away_constness): Same.
	(build_static_cast): Same.
	(build_const_cast_1): Same.
	(maybe_warn_about_returning_address_of_local): Same.
	(check_return_expr): Same.
	* typeck2.c (abstract_virtuals_error_sfinae): Same.
	(digest_init_r): Replace a tab with spaces in a diagnostic.
	(build_functional_cast): Quote keywords, operators, and types
	in diagnostics.

2019-05-15  Jakub Jelinek  <jakub@redhat.com>

	PR debug/90197
	* cp-gimplify.c (genericize_cp_loop): Emit a DEBUG_BEGIN_STMT
	before the condition (or if missing or constant non-zero at the end
	of the loop.  Emit a DEBUG_BEGIN_STMT before the increment expression
	if any.  Don't call protected_set_expr_location on incr if it already
	has a location.

2019-05-15  Marek Polacek  <polacek@redhat.com>

	CWG 2096 - constraints on literal unions.
	* class.c (check_field_decls): Initialize booleans directly.  A union
	is literal if at least one of its non-static data members is of
	non-volatile literal type.

2019-05-15  Paolo Carlini  <paolo.carlini@oracle.com>

	* cp-tree.h (REFERENCE_VLA_OK): Remove.
	* lambda.c (build_capture_proxy): Remove use of the above.

2019-05-15  Paolo Carlini  <paolo.carlini@oracle.com>

	* call.c (perform_overload_resolution, build_new_method_call_1):
	Use OVL_P; remove redundant TEMPLATE_DECL checks.
	* decl.c (grokfndecl): Likewise.
	* mangle.c (write_expression): Likewise.
	* parser.c (cp_parser_template_id): Likewise.
	* pt.c (resolve_overloaded_unification, type_dependent_expression_p):
	Likewise.
	* search.c (build_baselink): Likewise.
	* tree.c (is_overloaded_fn, dependent_name, maybe_get_fns): Likewise.

2019-05-14  Paolo Carlini  <paolo.carlini@oracle.com>

	PR preprocessor/90382
	* decl.c (grokdeclarator): Fix value assigned to typespec_loc, use
	min_location.

2019-05-13  Jason Merrill  <jason@redhat.com>

	Use releasing_vec more broadly.
	* cp-tree.h (struct releasing_vec): Replace get_ref method with
	operator&.
	(vec_safe_push, vec_safe_reserve, vec_safe_length, vec_safe_splice):
	Forwarding functions for releasing_vec.
	(release_tree_vector): Declare but don't define.
	* call.c (build_op_delete_call, build_temp, call_copy_ctor)
	(perform_direct_initialization_if_possible): Use releasing_vec.
	* constexpr.c (cxx_eval_vec_init_1, cxx_eval_store_expression):
	Likewise.
	* cp-gimplify.c (cp_fold): Likewise.
	* cvt.c (force_rvalue, ocp_convert): Likewise.
	* decl.c (get_tuple_decomp_init): Likewise.
	* except.c (build_throw): Likewise.
	* init.c (perform_member_init, expand_default_init): Likewise.
	* method.c (do_build_copy_assign, locate_fn_flags): Likewise.
	* parser.c (cp_parser_userdef_char_literal)
	(cp_parser_userdef_numeric_literal)
	(cp_parser_userdef_string_literal)
	(cp_parser_perform_range_for_lookup)
	(cp_parser_range_for_member_function, cp_parser_omp_for_loop)
	(cp_parser_omp_for_loop_init): Likewise.
	* pt.c (tsubst_copy_and_build, do_class_deduction): Likewise.
	* semantics.c (calculate_direct_bases, calculate_bases)
	(finish_omp_barrier, finish_omp_flush, finish_omp_taskwait)
	(finish_omp_taskyield, finish_omp_cancel)
	(finish_omp_cancellation_point): Likewise.
	* tree.c (build_vec_init_elt, strip_typedefs, strip_typedefs_expr)
	(build_min_non_dep_op_overload): Likewise.
	* typeck.c (build_function_call_vec, cp_build_function_call_nary)
	(cp_build_modify_expr): Likewise.
	* typeck2.c (build_functional_cast): Likewise.

2019-05-11  Paolo Carlini  <paolo.carlini@oracle.com>

	* typeck.c (cp_build_function_call_vec): When mark_used fails
	unconditionally return error_mark_node.

2019-05-10  Paolo Carlini  <paolo.carlini@oracle.com>

	* decl.c (grokvardecl): Use an accurate location in error message
	about main as a global variable.

2019-05-10  Paolo Carlini  <paolo.carlini@oracle.com>

	* call.c (build_call_a): Use FUNC_OR_METHOD_TYPE_P.
	* cp-gimplify.c (cp_fold): Likewise.
	* cp-objcp-common.c (cp_type_dwarf_attribute): Likewise.
	* cp-tree.h (TYPE_OBJ_P, TYPE_PTROBV_P): Likewise.
	* cvt.c (perform_qualification_conversions): Likewise.
	* decl.c (grokdeclarator): Likewise.
	* decl2.c (build_memfn_type): Likewise.
	* mangle.c (canonicalize_for_substitution, write_type): Likewise.
	* parser.c (cp_parser_omp_declare_reduction): Likewise.
	* pt.c (check_explicit_specialization, uses_deducible_template_parms,
	check_cv_quals_for_unify, dependent_type_p_r): Likewise.
	* rtti.c (ptr_initializer): Likewise.
	* semantics.c (finish_asm_stmt, finish_offsetof,
	cp_check_omp_declare_reduction): Likewise.
	* tree.c (cp_build_qualified_type_real,
	cp_build_type_attribute_variant, cxx_type_hash_eq,
	cxx_copy_lang_qualifiers, cp_free_lang_data): Likewise.
	* typeck.c (structural_comptypes, convert_arguments,
	cp_build_addr_expr_1, unary_complex_lvalue, cp_build_c_cast,
	cp_build_modify_expr, comp_ptr_ttypes_real, type_memfn_rqual):
	Likewise.

2019-05-10  Marek Polacek  <polacek@redhat.com>

	PR c++/78010 - bogus -Wsuggest-override warning on final function.
	* class.c (check_for_override): Don't warn for final functions.

2019-05-10  Jakub Jelinek  <jakub@redhat.com>

	PR pch/90326
	* config-lang.in (gtfiles): Remove c-family/c-lex.c, add
	c-family/c-cppbuiltin.c.

2019-05-09  Paolo Carlini  <paolo.carlini@oracle.com>

	PR c++/90382
	Revert:
	2018-04-26  Paolo Carlini  <paolo.carlini@oracle.com>

	* decl.c (grokdeclarator): Fix value assigned to typespec_loc, use
	min_location.

2019-05-08  Nathan Sidwell  <nathan@acm.org>

	Kill DECL_SAVED_FUNCTION_DATA .
	* cp-tree.h (language_function): Remove x_auto_return_pattern.
	(current_function_auto_return_pattern): Delete.
	(lang_decl_fn): Replace saved_language_function with
	saved_auto_return type.
	(DECL_SAVED_FUNCTION_DATA): Delete.
	(DECL_SAVED_AUTO_RETURN_TYPE): New.
	(FNDECL_USED_AUTO): Correct documentation.
	* decl.c (duplicate_decls): Adjust AUTO return handling.
	(start_preparsed_function): Replace
	current_function_auto_return_pattern with
	DECL_SAVED_AUTO_RETURN_TYPE.  Remove DECL_SAVED_FUNCTION_DATA
	zapping.
	(finish_function): Likewise.
	(save_function_data): Delete.
	(fndecl_declared_return_type): Reimplement.
	* mangle.c (write_unqualified_name): Use DECL_SAVED_AUTO_RETURN_TYPE.
	* method.c (make_thunk, make_alias_for): Likewise.
	* parser.c (cp_parser_jump_statement): Likewise.
	* pt.c (do_auto_deduction): Likewise.
	* typeck.c (check_return_expr): Likewise.

2019-05-06  Jason Merrill  <jason@redhat.com>

	PR c++/90171 - reorganize usual_deallocation_fn_p
	* call.c (struct dealloc_info): New.
	(usual_deallocation_fn_p): Take a dealloc_info*.
	(aligned_deallocation_fn_p, sized_deallocation_fn_p): Remove.
	(build_op_delete_call): Adjust.

2019-05-07  Jason Merrill  <jason@redhat.com>

	PR c++/86485 - -Wmaybe-unused with empty class ?:
	* typeck.c (build_static_cast_1): Use cp_build_addr_expr.

	* pt.c (type_dependent_expression_p): A non-type template parm with
	a placeholder type is type-dependent.

2019-05-06  Marek Polacek  <polacek@redhat.com>

	PR c++/90265 - ICE with generic lambda.
	* pt.c (tsubst_copy_and_build): Use a dedicated variable for the last
	element in the vector.

2019-05-03  Martin Liska  <mliska@suse.cz>

	* call.c (build_aggr_conv): Use is_empty instead of
	elements () == 0 (and similar usages).
	* parser.c (cp_parser_lambda_introducer): Likewise.

2019-05-02  Nathan Sidwell  <nathan@acm.org>

	* semantics.c (finish_id_expression_1): Remove unreachable code.

2019-05-01  Nathan Sidwell  <nathan@acm.org>

	* name-lookup.h (get_class_binding_direct): Change final arg to
	bool.
	(get_class_binding): Likewise.
	* name-lookup.c (get_class_binding_direct): Replace TYPE_OR_FNS
	arg with WANT_TYPE bool.  Simplify.
	(get_class_binding): Adjust final arg.
	* decl.c (reshape_init_class): Adjust get_class_binding calls.

2019-04-30  Nathan Sidwell  <nathan@acm.org>

	* cp-objcp-common.c (cp_common_init_ts): Use MARK_TS_EXP for _EXPR
	nodes.  Call c_common_init_ts.

2019-04-29  Nathan Sidwell  <nathan@acm.org>

	* decl.c (duplicate_decls): Add whitespace, move comments into
	conditional blocks.
	* method.c (explain_implicit_non_constexpr): Refactor.
	* pt.c (check_explicit_specialization): Fix indentation.
	* semantics.c (process_outer_var_ref): Reformat.
	(finish_id_expression_1): Use STRIP_TEMPLATE.

2019-04-26  Jonathan Wakely  <jwakely@redhat.com>

	PR c++/90243 - orphaned note in uninstantiated constexpr function
	* decl.c (check_for_uninitialized_const_var): Suppress notes if no
	error was shown.

2019-04-26  Paolo Carlini  <paolo.carlini@oracle.com>

	PR c++/90173
	* decl.c (grokdeclarator): Set type to error_mark_node
	upon error about template placeholder type non followed
	by a simple declarator-id.

2019-04-26  Paolo Carlini  <paolo.carlini@oracle.com>

	* decl.c (grokdeclarator): Fix value assigned to typespec_loc, use
	min_location.

2019-04-24  Jason Merrill  <jason@redhat.com>

	PR c++/90227 - error with template parameter packs.
	* pt.c (coerce_template_parms): Do add empty pack when
	require_all_args.

2019-04-24  Richard Biener  <rguenther@suse.de>

	* call.c (null_ptr_cst_p): Order checks according to expensiveness.
	(conversion_null_warnings): Likewise.
	* typeck.c (same_type_ignoring_top_level_qualifiers_p): Return
	early if type1 == type2.

2019-04-22  Jason Merrill  <jason@redhat.com>

	PR c++/87366 - wrong error with alias template.
	* typeck.c (structural_comptypes): When comparing_specializations,
	aliases are unequal.
	(comptypes): When comparing_specializations, do structural
	comparison.

2019-04-19  Jason Merrill  <jason@redhat.com>

	PR c++/90190 - CTAD with list-constructor.
	* pt.c (do_class_deduction): Don't try the single element deduction
	if the single element is also a braced list.

	PR c++/90171 - ICE with destroying delete with size_t parm.
	* call.c (sized_deallocation_fn_p): New.  Use it instead of
	second_parm_is_size_t in most cases.
	(second_parm_is_size_t): Don't check for aligned.

2019-04-19  Paolo Carlini  <paolo.carlini@oracle.com>

	PR c++/89900
	* pt.c (fn_type_unification): When handling null explicit
	arguments do not special case non-parameter packs.

2019-04-19  Jakub Jelinek  <jakub@redhat.com>

	PR c++/90138
	* pt.c (process_template_parm): Set decl to pushdecl result.  If
	!is_non_type, also set parm to that.

	PR c/89888
	* decl.c (struct cp_switch): Remove outside_range_p member.
	(push_switch): Don't clear it.
	(pop_switch): Adjust c_do_switch_warnings caller.
	(finish_case_label): Adjust c_add_case_label caller.

	PR c++/90108
	* decl.c (duplicate_decls): If remove is main variant and
	DECL_ORIGINAL_TYPE is some other type, remove a DECL_ORIGINAL_TYPE
	variant that has newdecl as TYPE_NAME if any.

2019-04-18  Jason Merrill  <jason@redhat.com>

	PR c++/87554 - ICE with extern template and reference member.
	* decl.c (cp_finish_decl): Don't set DECL_INITIAL of external vars.

2019-04-17  Jason Merrill  <jason@redhat.com>

	PR c++/90047 - ICE with enable_if alias template.
	* pt.c (tsubst_decl) [TYPE_DECL]: Don't put an erroneous decl in the
	hash table when we're in SFINAE context.

2019-04-17  Marek Polacek  <polacek@redhat.com>

	PR c++/90124 - bogus error with incomplete type in decltype.
	* typeck.c (build_class_member_access_expr): Check
	cp_unevaluated_operand.

2019-04-12  Jakub Jelinek  <jakub@redhat.com>

	PR c/89933
	* decl.c (duplicate_decls): When newdecl's type is its main variant,
	don't try to remove it from the variant list, but instead assert
	it has no variants.

2019-04-12  Martin Sebor  <msebor@redhat.com>

	PR c/88383
	PR c/89288
	* parser.c (cp_parser_has_attribute_expression): Handle assignment
	expressions.

2019-04-12  Jason Merrill  <jason@redhat.com>

	* call.c (null_member_pointer_value_p): Handle an empty CONSTRUCTOR
	of PMF type.

2019-04-12  Marek Polacek  <polacek@redhat.com>

	* except.c (build_noexcept_spec): Use build_converted_constant_bool_expr
	instead of perform_implicit_conversion_flags.

	PR c++/87603 - constexpr functions are no longer noexcept.
	* constexpr.c (is_sub_constant_expr): Remove unused function.
	* cp-tree.h (is_sub_constant_expr): Remove declaration.
	* except.c (check_noexcept_r): Don't consider a call to a constexpr
	function noexcept.

2019-04-11  Jakub Jelinek  <jakub@redhat.com>

	PR translation/90035
	* parser.h (struct cp_parser): Add
	type_definition_forbidden_message_arg member.
	* parser.c (cp_debug_parser): Print it.
	(cp_parser_check_type_definition): Pass
	parser->type_definition_forbidden_message_arg as second argument to
	error.
	(cp_parser_has_attribute_expression, cp_parser_sizeof_operand): Set
	parser->type_definition_forbidden_message_arg and use G_() with
	%qs for parser->type_definition_forbidden_message instead of
	building untranslatable message using concat.

2019-04-09  Jakub Jelinek  <jakub@redhat.com>

	PR translation/90011
	* typeck2.c (check_narrowing): Remove trailing space from diagnostics.

2019-04-08  Marek Polacek  <polacek@redhat.com>

	* typeck2.c (digest_init_r): Don't condition the object slicing warning
	on flag_checking.

2019-04-08  Paolo Carlini  <paolo.carlini@oracle.com>

	PR c++/89914
	* semantics.c (trait_expr_value): Don't use TYPE_NOTHROW_P
	when maybe_instantiate_noexcept fails.
	(classtype_has_nothrow_assign_or_copy_p): Likewise.
	* method.c (implicitly_declare_fn): Avoid passing error_mark_node
	to build_exception_variant.

2019-04-05  Marek Polacek  <polacek@redhat.com>

	PR c++/87145 - bogus error converting class type in template arg list.
	* pt.c (convert_nontype_argument): Don't call
	build_converted_constant_expr if it could involve calling a conversion
	function with a instantiation-dependent constructor as its argument.

2019-04-05  Martin Sebor  <msebor@redhat.com>

	PR bootstrap/89980
	* decl.c (reshape_init_array_1): Avoid treating empty strings
	as zeros in array initializers.
	Use trivial_type_p () instead of TYPE_HAS_TRIVIAL_DFLT().

2019-04-04  Jason Merrill  <jason@redhat.com>

	PR c++/89948 - ICE with break in statement-expr.
	* constexpr.c (cxx_eval_statement_list): Jumping out of a
	statement-expr is non-constant.

2019-04-04  Jason Merrill  <jason@redhat.com>

	PR c++/89966 - error with non-type auto tparm.
	* pt.c (do_auto_deduction): Clear tf_partial.

2019-04-04  Jason Merrill  <jason@redhat.com>

	PR c++/86986 - ICE with TTP with parameter pack.
	* pt.c (coerce_template_parameter_pack): Only look at the type of a
	non-type parameter pack.
	(fixed_parameter_pack_p_1): Don't recurse into the type of a
	non-type parameter pack.
	(coerce_template_template_parms): Call add_outermost_template_args.

2019-04-04  Martin Sebor  <msebor@redhat.com>

	PR c++/89974
	PR c++/89878
	PR c++/89833
	PR c++/47488
	* decl.c (reshape_init_array_1): Strip trailing zero-initializers
	from arrays of trivial type and known size.
	* mangle.c (write_expression): Convert braced initializer lists
	to STRING_CSTs.
	(write_expression): Trim trailing zero-initializers from arrays
	of trivial type.
	(write_template_arg_literal): Mangle strings the same as braced
	initializer lists.

2019-04-03  Jason Merrill  <jason@redhat.com>

	PR c++/81866 - ICE with member template and default targ.
	* pt.c (tsubst_template_decl): Handle getting a type from
	retrieve_specialization.

	PR c++/86586 - -fcompare-debug=-Wsign-compare.
	* typeck.c (cp_build_binary_op): Don't fold for -Wsign-compare.

	PR c++/89331 - ICE with offsetof in incomplete class.
	* semantics.c (finish_offsetof): Handle error_mark_node.
	* typeck.c (build_class_member_access_expr): Call
	complete_type_or_maybe_complain before converting to base.

	PR c++/89917 - ICE with lambda in variadic mem-init.
	* pt.c (make_pack_expansion): Change type_pack_expansion_p to false.

2019-04-01  Jason Merrill  <jason@redhat.com>

	PR c++/86946 - ICE with function call in template argument.
	DR 1321
	* pt.c (iterative_hash_template_arg) [CALL_EXPR]: Use
	dependent_name.

2019-04-01  Paolo Carlini  <paolo.carlini@oracle.com>

	PR c++/62207
	* pt.c (tsubst_copy): Deal with lookup_name not returing a variable.

2019-03-31  Marek Polacek  <polacek@redhat.com>

	PR c++/89852 - ICE with C++11 functional cast with { }.
	* constexpr.c (fold_non_dependent_expr_template): New static function
	broken out of...
	(fold_non_dependent_expr): ...here.
	(fold_non_dependent_init): New function.
	* cp-tree.h (fold_non_dependent_init): Declare.
	* typeck2.c (massage_init_elt): Call fold_non_dependent_init instead
	of fold_non_dependent_expr.  Don't call maybe_constant_init.

2019-03-30  Jason Merrill  <jason@redhat.com>

	PR c++/89744 - ICE with specialization of member class template.
	* pt.c (lookup_template_class_1): If the partial instantiation is
	explicitly specialized, adjust.
	(maybe_process_partial_specialization): Also adjust
	CLASSTYPE_TI_ARGS.

2019-03-29  Jakub Jelinek  <jakub@redhat.com>

	PR sanitizer/89869
	* typeck.c: Include gimplify.h.
	(cp_build_modify_expr) <case COND_EXPR>: Unshare rhs before using it
	for second time.  Formatting fixes.

2019-03-29  Marek Polacek  <polacek@redhat.com>

	PR c++/89876 - ICE with deprecated conversion.
	* call.c (convert_like_real): Only give warnings with tf_warning.

2019-03-28  Marek Polacek  <polacek@redhat.com>

	PR c++/89612 - ICE with member friend template with noexcept.
	* pt.c (maybe_instantiate_noexcept): For function templates, use their
	template result (function decl).  Don't set up local specializations.
	Temporarily turn on processing_template_decl.  Update the template type
	too.

	PR c++/89836 - bool constant expression and explicit conversions.
	* call.c (build_converted_constant_expr_internal): New function,
	renamed from...
	(build_converted_constant_expr): ...this.  New.
	(build_converted_constant_bool_expr): New.
	* cp-tree.h (build_converted_constant_bool_expr): Declare.
	* decl.c (build_explicit_specifier): Call
	build_converted_constant_bool_expr.

2019-03-28  Jakub Jelinek  <jakub@redhat.com>

	PR c++/89785
	* constexpr.c (struct check_for_return_continue_data): New type.
	(check_for_return_continue): New function.
	(potential_constant_expression_1) <case SWITCH_STMT>: Walk
	SWITCH_STMT_BODY to find RETURN_EXPRs or CONTINUE_STMTs not nested
	in loop bodies and set *jump_target to that if found.

2019-03-27  Jason Merrill  <jason@redhat.com>

	PR c++/89831 - error with qualified-id in const member function.
	* semantics.c (finish_non_static_data_member): Use object cv-quals
	in scoped case, too.

	PR c++/89421 - ICE with lambda in template parameter list.
	* parser.c (cp_parser_lambda_expression): Also reject a lambda in a
	template parameter list before C++20.
	* pt.c (type_dependent_expression_p): True for LAMBDA_EXPR.
	* semantics.c (begin_class_definition): Restore error about defining
	non-lambda class in template parm list.

2019-03-26  Jason Merrill  <jason@redhat.com>

	PR c++/86932 - missed SFINAE with empty pack.
	* pt.c (coerce_template_parms): Don't add an empty pack if
	tf_partial.
	(fn_type_unification): Pass tf_partial to coerce_template_parms.

	PR c++/86429 - constexpr variable in lambda.
	PR c++/82643
	PR c++/87327
	* constexpr.c (cxx_eval_constant_expression): In a lambda function,
	try evaluating the captured variable directly.

2019-03-26  Jakub Jelinek  <jakub@redhat.com>

	PR c++/89796
	* semantics.c (finish_omp_atomic): Add warning_sentinel for
	-Wunused-value around finish_expr_stmt call.

2019-03-25  Paolo Carlini  <paolo.carlini@oracle.com>

	PR c++/84661
	PR c++/85013
	* parser.c (cp_parser_binary_expression): Don't call cp_fully_fold
	to undo the disabling of warnings.

2019-03-25  Jason Merrill  <jason@redhat.com>

	PR c++/87748 - substitution failure error with decltype.
	* pt.c (most_specialized_partial_spec): Clear
	processing_template_decl.

2019-03-25  Marek Polacek  <polacek@redhat.com>

	PR c++/89214 - ICE when initializing aggregates with bases.
	* typeck2.c (digest_init_r): Warn about object slicing instead of
	crashing.

	PR c++/89705 - ICE with reference binding with conversion function.
	* call.c (reference_binding): If the result of the conversion function
	is a prvalue of non-class type, use the cv-unqualified type.

2019-03-25  Nathan Sidwell  <nathan@acm.org>

	* lambda.c (maybe_add_lambda_conv_op): Don't add to comdat group.

2019-03-22  Jakub Jelinek  <jakub@redhat.com>

	PR c++/60702
	* cp-tree.h (get_tls_wrapper_fn): Remove declaration.
	(maybe_get_tls_wrapper_call): Declare.
	* decl2.c (get_tls_wrapper_fn): Make static.
	(maybe_get_tls_wrapper_call): New function.
	* typeck.c (build_class_member_access_expr): Handle accesses to TLS
	variables.
	* semantics.c (finish_qualified_id_expr): Likewise.
	(finish_id_expression_1): Use maybe_get_tls_wrapper_call.
	* pt.c (tsubst_copy_and_build): Likewise.

	PR c++/87481
	* constexpr.c (struct constexpr_ctx): Add constexpr_ops_count member.
	(cxx_eval_constant_expression): When not skipping, not constant class
	or location wrapper, increment *ctx->constexpr_ops_count and if it is
	above constexpr_loop_nest_limit, diagnose failure.
	(cxx_eval_outermost_constant_expr): Add constexpr_ops_count and
	initialize ctx.constexpr_ops_count to its address.
	(is_sub_constant_expr): Likewise.

2019-03-21  Jakub Jelinek  <jakub@redhat.com>

	PR c++/71446
	* call.c (filed_in_pset): Change pset from hash_set<tree> * to
	hash_set<tree, true> &, adjust uses accordingly.
	(build_aggr_conv): Change pset from hash_set<tree> *
	to hash_set<tree, true>.  Replace goto fail; with return NULL;,
	adjust pset uses.

	PR c++/89767
	* parser.c (cp_parser_lambda_introducer): Add ids and first_capture_id
	variables, check for duplicates in this function.
	* lambda.c (add_capture): Don't check for duplicates nor use
	IDENTIFIER_MARKED.
	(register_capture_members): Don't clear IDENTIFIER_MARKED here.

2019-03-21  Paolo Carlini  <paolo.carlini@oracle.com>

	PR c++/89571
	* method.c (after_nsdmi_defaulted_late_checks): Avoid passing
	error_mark_node to comp_except_specs.

2019-03-20  Jason Merrill  <jason@redhat.com>

	PR c++/87480 - decltype of member access in default template arg
	* pt.c (type_unification_real): Accept a dependent result in
	template context.

2019-03-19  Martin Sebor  <msebor@redhat.com>

	PR tree-optimization/89688
	* typeck2.c (store_init_value): Call braced_lists_to_string for more
	kinds of initializers.

2019-03-18  Jason Merrill  <jason@redhat.com>

	PR c++/89630 - ICE with dependent using-decl as template arg.
	* tree.c (cp_tree_equal): Always return false for USING_DECL.

	PR c++/89761 - ICE with sizeof... in pack expansion.
	* pt.c (argument_pack_element_is_expansion_p): Handle
	ARGUMENT_PACK_SELECT.

	PR c++/89640 - GNU attributes on lambda.
	* parser.c (cp_parser_lambda_declarator_opt): Allow GNU attributes.

	PR c++/89682 - wrong access error in default argument.
	* pt.c (tsubst_default_argument): Don't defer access checks.

2019-03-18  Paolo Carlini  <paolo.carlini@oracle.com>

	PR c++/85014
	* semantics.c (finish_non_static_data_member): Check return value
	of context_for_name_lookup and immediately return error_mark_node
	if isn't a type.

2019-03-17  Jason Merrill  <jason@redhat.com>

	PR c++/89571 - ICE with ill-formed noexcept on constructor.
	* pt.c (maybe_instantiate_noexcept): Only return false if defaulted.
	(regenerate_decl_from_template): Use it for noexcept-specs.

2019-03-14  Jason Merrill  <jason@redhat.com>

	* parser.c (cp_parser_decl_specifier_seq): Support C++20
	concept-definition syntax without 'bool'.

2019-03-14  Jakub Jelinek  <jakub@redhat.com>

	PR c++/89512
	* semantics.c (finish_qualified_id_expr): Reject variable templates.

	PR c++/89652
	* constexpr.c (struct constexpr_ctx): Change save_exprs type from
	hash_set<tree> to vec<tree>.
	(cxx_eval_call_expression): Adjust for save_exprs being a vec instead
	of hash_set.
	(cxx_eval_loop_expr): Likewise.  Truncate the vector after each
	removal of SAVE_EXPRs from values.
	(cxx_eval_constant_expression) <case SAVE_EXPR>: Call safe_push
	method on save_exprs instead of add.

2019-03-13  Jason Merrill  <jason@redhat.com>

	PR c++/86521 - C++17 copy elision in initialization by constructor.
	* call.c (joust_maybe_elide_copy): New.
	(joust): Call it.

2019-03-13  Marek Polacek  <polacek@redhat.com>

	PR c++/88979 - further P0634 fix for constructors.
	* parser.c (cp_parser_decl_specifier_seq): Pass flags to
	cp_parser_constructor_declarator_p.
	(cp_parser_direct_declarator): Allow missing typename for constructor
	parameters.
	(cp_parser_constructor_declarator_p): Add FLAGS parameter.  Pass it to
	cp_parser_type_specifier.

	PR c++/89686 - mixing init-capture and simple-capture in lambda.
	* parser.c (cp_parser_lambda_introducer): Give error when combining
	init-capture and simple-capture.

	PR c++/89660 - bogus error with -Wredundant-move.
	* typeck.c (maybe_warn_pessimizing_move): Only accept (T &) &arg
	as the std::move's argument.  Don't call convert_for_initialization
	when warn_redundant_move isn't on.

2019-03-11  Jason Merrill  <jason@redhat.com>

	PR c++/86521 - wrong overload resolution with ref-qualifiers.
	* call.c (build_user_type_conversion_1): Don't use a conversion to a
	reference of the wrong rvalueness for direct binding.

2019-03-11  Martin Liska  <mliska@suse.cz>

	* cvt.c (build_expr_type_conversion): Wrap apostrophes
	in gcc internal format with %'.
	* decl.c (check_no_redeclaration_friend_default_args): Likewise.
	(grokfndecl): Likewise.
	* name-lookup.c (do_pushtag): Likewise.
	* pt.c (unify_parameter_deduction_failure): Likewise.
	(unify_template_deduction_failure): Likewise.

2019-03-11  Martin Liska  <mliska@suse.cz>

	* call.c (convert_arg_to_ellipsis): Wrap an option name
	in a string format message and fix GNU coding style.
	(build_over_call): Likewise.
	* class.c (check_field_decl): Likewise.
	(layout_nonempty_base_or_field): Likewise.
	* constexpr.c (cxx_eval_loop_expr): Likewise.
	* cvt.c (type_promotes_to): Likewise.
	* decl.c (cxx_init_decl_processing): Likewise.
	(mark_inline_variable): Likewise.
	(grokdeclarator): Likewise.
	* decl2.c (record_mangling): Likewise.
	* error.c (maybe_warn_cpp0x): Likewise.
	* except.c (doing_eh): Likewise.
	* mangle.c (maybe_check_abi_tags): Likewise.
	* parser.c (cp_parser_diagnose_invalid_type_name): Likewise.
	(cp_parser_userdef_numeric_literal): Likewise.
	(cp_parser_primary_expression): Likewise.
	(cp_parser_unqualified_id): Likewise.
	(cp_parser_pseudo_destructor_name): Likewise.
	(cp_parser_builtin_offsetof): Likewise.
	(cp_parser_lambda_expression): Likewise.
	(cp_parser_lambda_introducer): Likewise.
	(cp_parser_lambda_declarator_opt): Likewise.
	(cp_parser_selection_statement): Likewise.
	(cp_parser_init_statement): Likewise.
	(cp_parser_decomposition_declaration): Likewise.
	(cp_parser_function_specifier_opt): Likewise.
	(cp_parser_static_assert): Likewise.
	(cp_parser_simple_type_specifier): Likewise.
	(cp_parser_namespace_definition): Likewise.
	(cp_parser_using_declaration): Likewise.
	(cp_parser_ctor_initializer_opt_and_function_body): Likewise.
	(cp_parser_initializer_list): Likewise.
	(cp_parser_type_parameter_key): Likewise.
	(cp_parser_member_declaration): Likewise.
	(cp_parser_try_block): Likewise.
	(cp_parser_std_attribute_spec): Likewise.
	(cp_parser_requires_clause_opt): Likewise.
	* pt.c (check_template_variable): Likewise.
	(check_default_tmpl_args): Likewise.
	(push_tinst_level_loc): Likewise.
	(instantiate_pending_templates): Likewise.
	(invalid_nontype_parm_type_p): Likewise.
	* repo.c (get_base_filename): Likewise.
	* rtti.c (typeid_ok_p): Likewise.
	(build_dynamic_cast_1): Likewise.
	* tree.c (maybe_warn_parm_abi): Likewise.

2019-03-08  Jakub Jelinek  <jakub@redhat.com>

	PR other/80058
	* parser.c (cp_parser_template_declaration_after_parameters): Avoid
	one space before " at the end of line and another after " on another
	line in a string literal.

	PR tree-optimization/89550
	* semantics.c (maybe_convert_cond): Only set TREE_NO_WARNING if
	warning_at returned true.
	* decl2.c (c_parse_final_cleanups): Likewise.
	* typeck.c (convert_for_assignment): Likewise.
	* decl.c (finish_function): Likewise.

	PR c++/89585
	* parser.c (cp_parser_asm_definition): Just warn instead of error
	on volatile qualifier outside of function body.

	PR c++/89599
	* constexpr.c (potential_constant_expression_1): Reject
	REINTERPRET_CAST_P NOP_EXPRs.

	PR c++/89622
	* call.c (joust): Call print_z_candidate only if pedwarn returned
	true.

2019-03-07  Jason Merrill  <jason@redhat.com>

	PR c++/88123 - lambda and using-directive.
	* name-lookup.c (op_unqualified_lookup)
	(maybe_save_operator_binding, discard_operator_bindings)
	(push_operator_bindings): New.
	* typeck.c (build_x_binary_op, build_x_unary_op): Call
	maybe_save_operator_binding.
	* decl.c (start_preparsed_function): Call push_operator_bindings.
	* tree.c (cp_free_lang_data): Call discard_operator_bindings.

	PR c++/88820 - ICE with CTAD and member template used in DMI.
	* pt.c (do_class_deduction): Handle parm used as its own arg.

2019-03-07  Jakub Jelinek  <jakub@redhat.com>

	PR c++/89585
	* parser.c (cp_parser_asm_definition): Parse asm qualifiers even
	at toplevel, but diagnose them.

2019-03-06  Jason Merrill  <jason@redhat.com>

	PR c++/89381 - implicit copy and using-declaration.
	* class.c (classtype_has_move_assign_or_move_ctor_p): Don't consider
	op= brought in by a using-declaration.

2019-03-06  Jakub Jelinek  <jakub@redhat.com>

	PR c++/87148
	* init.c (build_value_init_noctor): Ignore flexible array members.

2019-03-06  Jason Merrill  <jason@redhat.com>

	PR c++/89576 - if constexpr of lambda capture.
	* semantics.c (maybe_convert_cond): Do convert a non-dependent
	condition in a template.
	* typeck.c (condition_conversion): Handle being called in a
	template.

2019-03-06  Marek Polacek  <polacek@redhat.com>

	PR c++/87378 - bogus -Wredundant-move warning.
	* typeck.c (maybe_warn_pessimizing_move): See if the maybe-rvalue
	overload resolution would actually succeed.

2019-03-05  Jason Merrill  <jason@redhat.com>

	* class.c (is_really_empty_class): Add ignore_vptr parm.
	(trivial_default_constructor_is_constexpr): Pass it.
	* call.c (build_over_call): Pass it.
	* constexpr.c (cxx_eval_constant_expression): Pass it instead of
	checking TYPE_POLYMORPHIC_P.
	(cxx_eval_component_reference, potential_constant_expression_1):
	Pass it.
	* cp-gimplify.c (simple_empty_class_p): Pass it.
	* init.c (expand_aggr_init_1): Pass it.

2019-03-04  Paolo Carlini  <paolo.carlini@oracle.com>

	PR c++/84605
	* parser.c (cp_parser_class_head): Reject TYPE_BEING_DEFINED too.

2019-03-04  Jakub Jelinek  <jakub@redhat.com>

	PR c++/71446
	* call.c (field_in_pset): New function.
	(build_aggr_conv): Handle CONSTRUCTOR_IS_DESIGNATED_INIT correctly.

2019-03-02  Jakub Jelinek  <jakub@redhat.com>

	PR c++/71446
	* cp-tree.h (CONSTRUCTOR_IS_DESIGNATED_INIT): Define.
	* parser.c (cp_parser_braced_list): Adjust cp_parser_initializer_list
	caller, set CONSTRUCTOR_IS_DESIGNATED_INIT.
	(cp_parser_initializer_list): Add designated parameter, set *designated
	to a bool whether any designators were parsed.
	* decl.c (reshape_init): Copy over CONSTRUCTOR_IS_DESIGNATED_INIT if
	needed.
	* pt.c (tsubst_copy_and_build): Likewise.
	* call.c (implicit_conversion): If CONSTRUCTOR_IS_DESIGNATED_INIT,
	don't call build_list_conv, nor build_complex_conv, nor attempt to
	convert a single element initializer to scalar.

2019-03-01  Marek Polacek  <polacek@redhat.com>

	PR c++/89537 - missing location for error with non-static member fn.
	* call.c (resolve_args): Use EXPR_LOCATION.
	* typeck.c (build_class_member_access_expr): Use input_location.

	PR c++/89532 - ICE with incomplete type in decltype.
	* semantics.c (finish_compound_literal): Return error_mark_node
	if digest_init_flags returns error_mark_node.

2019-03-01  Jakub Jelinek  <jakub@redhat.com>

	Implement P1002R1, Try-catch blocks in constexpr functions
	PR c++/89513
	* parser.c (cp_parser_ctor_initializer_opt_and_function_body):
	Diagnose constexpr ctor or function with function-try-block with
	pedwarn for c++17 and earlier.  Formatting fix.
	(cp_parser_try_block): Use pedwarn instead of error and only for
	c++17 and earlier when try block appears in constexpr function.
	* constexpr.c (build_constexpr_constructor_member_initializers):
	Handle TRY_BLOCK here instead of erroring on it.

2019-02-28  Jason Merrill  <jason@redhat.com>

	PR c++/88183 - ICE with .* fold-expression.
	* pt.c (fold_expression) [DOTSTAR_EXPR]: Remove special handling.

	PR c++/86969 - ICE with constexpr if and recursive generic lambdas.
	* class.c, lambda.c, pt.c: Revert earlier change.
	* lambda.c (add_capture): Don't special-case capture of dependent
	VLA.

	* name-lookup.c (print_binding_level): Print this_entity.

2019-02-27  Marek Polacek  <polacek@redhat.com>

	PR c++/88857 - ICE with value-initialization of argument in template.
	* call.c (convert_like_real): Don't call build_value_init in template.

2019-02-27  Jason Merrill  <jason@redhat.com>

	PR c++/86969 - ICE with constexpr if and recursive generic lambdas.
	* semantics.c (process_outer_var_ref): Do capture dependent vars.
	* class.c (finish_struct): Only add TAG_DEFN if T is in
	current_function_decl.
	* lambda.c (vla_capture_type): Force the capture type out into the
	lambda's enclosing function.
	(add_capture): Pass in the lambda.
	* pt.c (tsubst_lambda_expr): complete_type a VLA capture type.

2019-02-27  Marek Polacek  <polacek@redhat.com>

	PR c++/89511 - ICE with using-declaration and unscoped enumerator.
	* parser.c (cp_parser_using_declaration): For an unscoped enum
	only use its context if it's not a function declaration.

2019-02-27  Paolo Carlini  <paolo.carlini@oracle.com>

	PR c++/89488
	* method.c (process_subob_fn): When maybe_instantiate_noexcept
	returns false don't call merge_exception_specifiers.

2019-02-27  Paolo Carlini  <paolo.carlini@oracle.com>

	PR c++/88987
	* parser.c (cp_parser_noexcept_specification_opt): Return NULL_TREE
	for a non-constant parsed expression.

2019-02-26  Jakub Jelinek  <jakub@redhat.com>

	PR c++/89481
	* constexpr.c (cxx_eval_store_expression): When changing active union
	member, set no_zero_init.

2019-02-23  Marek Polacek  <polacek@redhat.com>

	PR c++/88294 - ICE with non-constant noexcept-specifier.
	* pt.c (maybe_instantiate_noexcept): Set up the list of local
	specializations.  Set current_class_{ptr,ref}.

2019-02-22  David Malcolm  <dmalcolm@redhat.com>

	PR c++/89390
	* parser.c (cp_parser_unqualified_id): Capture and use locations
	for destructors.

2019-02-22  Marek Polacek  <polacek@redhat.com>

	PR c++/89420 - ICE with CAST_EXPR in explicit-specifier.
	* decl.c (build_explicit_specifier): Don't check
	processing_template_decl.  Call instantiation_dependent_expression_p
	instead of value_dependent_expression_p.  Call
	instantiate_non_dependent_expr_sfinae before
	build_converted_constant_expr instead of calling
	instantiate_non_dependent_expr after it.  Add
	processing_template_decl_sentinel.

2019-02-22  Thomas Schwinge  <thomas@codesourcery.com>

	* parser.c (cp_parser_oacc_simple_clause): Remove parser formal
	parameter, move loc formal parameter to the front.  Adjust all
	users.
	(cp_parser_oacc_shape_clause): Add loc formal parameter.  Adjust
	all users.

2019-02-21  Jason Merrill  <jason@redhat.com>

	PR c++/87685 - generic lambda 'this' capture error.
	* lambda.c (lambda_expr_this_capture): Change add_capture_p to int.
	(maybe_generic_this_capture): Pass -1.

	PR c++/88394 - ICE with VLA init-capture.
	* lambda.c (is_normal_capture_proxy): Check DECL_CAPTURED_VARIABLE.

	PR c++/88869 - C++17 ICE with CTAD and explicit specialization.
	* pt.c (do_class_deduction): Don't include explicit specialization
	args in outer_args.

	PR c++/89422 - ICE with -g and lambda in default arg in template.
	* pt.c (tsubst_function_decl): SET_DECL_FRIEND_CONTEXT sooner.

2019-02-21  Jason Merrill  <jason@redhat.com>

	PR c++/88419 - C++17 ICE with class template arg deduction.
	* pt.c (make_template_placeholder): Set TYPE_CANONICAL after
	CLASS_PLACEHOLDER_TEMPLATE.

2019-02-21  Jakub Jelinek  <jakub@redhat.com>

	PR c++/89285
	* constexpr.c (struct constexpr_fundef): Add parms and result members.
	(retrieve_constexpr_fundef): Adjust for the above change.
	(register_constexpr_fundef): Save constexpr body with copy_fn,
	temporarily set DECL_CONTEXT on DECL_RESULT before that.
	(get_fundef_copy): Change FUN argument to FUNDEF with
	constexpr_fundef * type, grab body and parms/result out of
	constexpr_fundef struct and temporarily change it for copy_fn calls
	too.
	(cxx_eval_builtin_function_call): For __builtin_FUNCTION temporarily
	adjust current_function_decl from ctx->call context.  Test
	!potential_constant_expression instead of !is_constant_expression.
	(cxx_bind_parameters_in_call): Grab parameters from new_call.  Undo
	convert_for_arg_passing changes for TREE_ADDRESSABLE type passing.
	(cxx_eval_call_expression): Adjust get_fundef_copy caller.
	(cxx_eval_conditional_expression): For IF_STMT, allow then or else
	operands to be NULL.
	(label_matches): Handle BREAK_STMT and CONTINUE_STMT.
	(cxx_eval_loop_expr): Add support for FOR_STMT, WHILE_STMT and DO_STMT.
	(cxx_eval_switch_expr): Add support for SWITCH_STMT.
	(cxx_eval_constant_expression): Handle IF_STMT, FOR_STMT, WHILE_STMT,
	DO_STMT, CONTINUE_STMT, SWITCH_STMT, BREAK_STMT and CONTINUE_STMT.
	For SIZEOF_EXPR, recurse on the result of fold_sizeof_expr.  Ignore
	DECL_EXPR with USING_DECL operand.
	* lambda.c (maybe_add_lambda_conv_op): Build thisarg using
	build_int_cst to make it a valid constant expression.

2019-02-20  Jason Merrill  <jason@redhat.com>

	PR c++/88690 - C++17 ICE with empty base in aggregate.
	* typeck2.c (process_init_constructor_record): Skip trivial
	initialization of an empty base.

2019-02-21  Richard Biener  <rguenther@suse.de>

	PR middle-end/89392
	* vtable-class-hierarchy.c (vtv_generate_init_routine): Do not
	make symtab process new functions here.

2019-02-20  Jason Merrill  <jason@redhat.com>

	PR c++/87921 - wrong error with inline static data member.
	* decl2.c (finish_static_data_member_decl): Don't set DECL_IN_AGGR_P
	for a non-template inline variable.  Do nothing for an
	already-instantiated variable.
	(c_parse_final_cleanups): Check DECL_IN_AGGR_P without
	DECL_INLINE_VAR_P.
	* decl.c (check_initializer): Likewise.
	(make_rtl_for_nonlocal_decl): Likewise.
	* pt.c (instantiate_decl): Likewise.
	* typeck2.c (store_init_value): Likewise.

2019-02-20  Jakub Jelinek  <jakub@redhat.com>

	PR c++/89403
	* decl2.c (c_parse_final_cleanups): Move TREE_ASM_WRITTEN setting
	for flag_syntax_only from here...
	* semantics.c (expand_or_defer_fn_1): ... here.

	PR c++/89405
	* decl.c (maybe_commonize_var): When clearing TREE_PUBLIC and
	DECL_COMMON, set DECL_INTERFACE_KNOWN.

	PR c++/89336
	* constexpr.c (cxx_eval_store_expression): Diagnose changing of active
	union member for -std=c++17 and earlier.

2019-02-19  Jason Merrill  <jason@redhat.com>

	PR c++/87513 - 'sorry' mangling PMF template-id.
	* mangle.c (write_expression): Handle SCOPE_REF to BASELINK.

2019-02-19  Jason Merrill  <jason@redhat.com>

	PR c++/88380 - wrong-code with flexible array and NSDMI.
	* typeck2.c (process_init_constructor_record): Skip flexarrays.

2019-02-20  will wray  <wjwray@gmail.com>

	PR c++/88572 - wrong handling of braces on scalar init.
	* decl.c (reshape_init_r): Allow braces around scalar initializer
	within aggregate init.  Reject double braced-init of scalar
	variable.

2019-02-20  Paolo Carlini  <paolo.carlini@oracle.com>

	PR c++/84536
	* pt.c (tsubst_init): Diagnose an initializer expanding to an
	empty list of expressions; tweak wrt dependent types.
	(regenerate_decl_from_template): For VAR_DECLs call tsubst_init
	instead of tsubst_expr.

2019-02-19  Jason Merrill  <jason@redhat.com>

	PR c++/88368 - wrong 'use of deleted function'
	* method.c (walk_field_subobs): Remember errors from get_nsdmi.
	(get_defaulted_eh_spec): Call push_tinst_level.
	* pt.c (maybe_instantiate_noexcept): Keep error_mark_node.
	* typeck2.c (merge_exception_specifiers): Handle error_mark_node.

2019-02-19  Chung-Lin Tang  <cltang@codesourcery.com>

	PR c/87924
	* parser.c (cp_parser_oacc_clause_wait): Add representation of wait
	clause without argument as 'wait (GOMP_ASYNC_NOVAL)', adjust comments.

2019-02-19  Jakub Jelinek  <jakub@redhat.com>

	PR c++/89387
	* lambda.c (maybe_generic_this_capture): Don't check
	DECL_NONSTATIC_MEMBER_FUNCTION_P on USING_DECLs.

	PR c++/89391
	* typeck.c (build_reinterpret_cast_1): Don't handle void to
	&& conversion go through build_target_expr_with_type.

	PR c++/89390
	* error.c (qualified_name_lookup_error): Only call
	suggest_alternative_in_scoped_enum if name is IDENTIFIER_NODE.

2019-02-19  Tom Honermann  <tom@honermann.net>

	* name-lookup.c (get_std_name_hint): Added u8string as a name hint.

2019-02-18  Jason Merrill  <jason@redhat.com>

	PR c++/89336 - multiple stores in constexpr stmt.
	* constexpr.c (cxx_eval_store_expression): Preevaluate scalar or
	assigned value.

	* pt.c (check_explicit_specialization): If the declarator is a
	template-id, only check whether the arguments are dependent.

	Improve duplicate [[likely]] diagnostic.
	* parser.c (cp_parser_statement): Make attrs_loc a range.  Pass it
	to process_stmt_hotness_attribute.
	* cp-gimplify.c (process_stmt_hotness_attribute): Take attrs_loc.
	(genericize_if_stmt): Use likely/unlikely instead of predictor_name.

2019-02-17  Marek Polacek  <polacek@redhat.com>

	PR c++/89217 - ICE with list-initialization in range-based for loop.
	* constexpr.c (unshare_constructor): No longer static.
	* cp-tree.h (unshare_constructor): Declare.
	* semantics.c (finish_compound_literal): When dealing with a
	non-dependent expression in a template, return the original
	expression.  Pass LOOKUP_NO_NARROWING to digest_init_flags.

2019-02-13  Marek Polacek  <polacek@redhat.com>

	PR c++/89297 - ICE with OVERLOAD in template.
	* semantics.c (finish_compound_literal): Call
	instantiate_non_dependent_expr_sfinae.

2019-02-13  Alexandre Oliva  <aoliva@redhat.com>

	PR c++/86379
	* cp-tree.h (USING_DECL_SCOPE): Use result rather than type.
	* name-lookup.c (strip_using_decl): Use USING_DECL_SCOPE.
	* search.c (protected_accessible_p): Follow USING_DECL_DECLS.
	(shared_member_p): Likewise.
	(lookup_member): Likewise.
	* decl.c (grok_special_member_properties): Skip USING_DECLs.
	* semantics.c (finish_omp_declare_simd_methods): Likewise.
	(finish_qualified_id_expr): Do not call shared_member_p with
	a dependent expr.

	PR c++/87322
	* pt.c (tsubst_lambda_expr): Avoid duplicate tsubsting.
	Move cp_evaluated resetting before signature tsubsting.
	(gen_elem_of_pack_expansion_instantiation): Separate local
	specializations per index.

2019-02-13  David Malcolm  <dmalcolm@redhat.com>

	PR c++/89036
	* class.c (add_method): Drop destructor assertion.

2019-02-13  Paolo Carlini  <paolo.carlini@oracle.com>

	PR c++/88986
	* decl.c (make_typename_type): Allow for TYPE_PACK_EXPANSION as
	context (the first argument).
	* pt.c (tsubst, case TYPENAME_TYPE): Handle TYPE_PACK_EXPANSION
	as context.

2019-02-12  Jason Merrill  <jason@redhat.com>

	PR c++/89144 - link error with constexpr initializer_list.
	* call.c (convert_like_real) [ck_list]: Don't allocate a temporary
	array for an empty list.
	* typeck2.c (store_init_value): Don't use cxx_constant_init in a
	template.

2019-02-11  Jason Merrill  <jason@redhat.com>

	PR c++/89241 - ICE with __func__ in lambda in template.
	* pt.c (enclosing_instantiation_of): Also check
	instantiated_lambda_fn_p for the template context.

2019-02-11  Marek Polacek  <polacek@redhat.com>

	PR c++/89212 - ICE converting nullptr to pointer-to-member-function.
	* pt.c (tsubst_copy_and_build) <case CONSTRUCTOR>: Return early for
	null member pointer value.

2019-02-11  Jakub Jelinek  <jakub@redhat.com>

	PR c++/88977
	* pt.c (convert_nontype_argument): Pass true as manifestly_const_eval
	to maybe_constant_value calls.

2019-02-11  Marek Polacek  <polacek@redhat.com>

	* typeck2.c (digest_init_r): Remove commented code.

2019-02-11  Martin Sebor  <msebor@redhat.com>

	PR c++/87996
	* decl.c (compute_array_index_type_loc): Preserve signed sizes
	for diagnostics.  Call valid_array_size_p instead of error.
	* init.c (build_new_1): Compute size for diagnostic.  Call
	invalid_array_size_error
	(build_new): Call valid_array_size_p instead of error.

2019-02-07  Alexandre Oliva  <aoliva@redhat.com>

	PR c++/86218
	* call.c (compare_ics): Deal with ck_aggr in either cs.

2019-02-06  David Malcolm  <dmalcolm@redhat.com>

	PR c++/71302
	* call.c (get_location_for_expr_unwinding_for_system_header): New
	function.
	(conversion_null_warnings): Use it when getting locations for
	EXPR, effectively adding a call to
	get_location_for_expr_unwinding_for_system_header for
	-Wconversion-null and making use of EXPR_LOCATION for
	-Wzero-as-null-pointer-constant.

2019-02-05  Jakub Jelinek  <jakub@redhat.com>

	PR c++/89187
	* optimize.c (maybe_thunk_body): Clear TREE_ADDRESSABLE on
	PARM_DECLs of the thunk.
	* lambda.c (maybe_add_lambda_conv_op): Likewise.

2019-02-05  Marek Polacek  <polacek@redhat.com>

	PR c++/89158 - by-value capture of constexpr variable broken.
	* call.c (convert_like_real) <case ck_user>: Call mark_exp_read
	instead of mark_rvalue_use.

2019-02-05  Alexandre Oliva  <aoliva@redhat.com>

	PR c++/87770
	* pt.c (instantiates_primary_template_p): New.
	(type_dependent_expression_p): Use it.

2019-02-01  Jason Merrill  <jason@redhat.com>

	PR c++/88761 - ICE with reference capture of constant.
	* lambda.c (mark_const_cap_r): Do walk subtrees of DECL_EXPR for
	non-proxy decls.

2019-02-01  Marek Polacek  <polacek@redhat.com>

	PR c++/88325 - ICE with invalid out-of-line template member definition.
	* parser.c (cp_parser_class_name): Don't call make_typename_type
	for overloads.

2019-02-01  Jakub Jelinek  <jakub@redhat.com>

	PR c++/87175
	* parser.c (cp_parser_gnu_attributes_opt): Set ok to false
	if require_open failed.

2019-01-31  Marek Polacek  <polacek@redhat.com>

	PR c++/89083, c++/80864 - ICE with list initialization in template.
	* constexpr.c (adjust_temp_type): Use copy_node and change the type
	instead of using build_constructor.
	* decl.c (reshape_init_r): Don't reshape a digested initializer.
	Return the initializer for COMPOUND_LITERAL_P.

	PR c++/88983 - ICE with switch in constexpr function.
	* constexpr.c (cxx_eval_switch_expr): Use SWITCH_COND and SWITCH_BODY.
	(cxx_eval_constant_expression) <case COND_EXPR>: Don't look for the
	label in the else branch if we found it in the then branch.

2019-01-30  Jason Merrill  <jason@redhat.com>

	PR c++/88752 - ICE with lambda and constexpr if.
	* cp-tree.h (LAMBDA_EXPR_INSTANTIATED): New.
	* pt.c (tsubst_lambda_expr): Set it.
	(instantiated_lambda_fn_p): Check it.
	(enclosing_instantiation_of): Use it.

2019-01-31  Jakub Jelinek  <jakub@redhat.com>

	PR libstdc++/88170
	* cxx-pretty-print.c (pp_cxx_enumeration_constant): Print always as
	a C cast in pp_c_flag_gnu_v3 mode.

2019-01-30  Jakub Jelinek  <jakub@redhat.com>

	PR c++/88988
	* lambda.c (is_capture_proxy): Don't return true for
	DECL_OMP_PRIVATIZED_MEMBER artificial vars.

2019-01-30  Marek Polacek  <polacek@redhat.com>

	PR c++/89119 - ICE with value-initialization in template.
	* pt.c (tsubst_copy_and_build): Handle RANGE_EXPR.

2019-01-29  Jason Merrill  <jason@redhat.com>

	PR c++/86943 - wrong code converting lambda to function pointer.
	* lambda.c (maybe_add_lambda_conv_op): Use a template-id in the
	call.  Only forward parms for decltype.
	* pt.c (tsubst_copy_and_build) [CALL_EXPR]: Handle CALL_FROM_THUNK_P
	specially.
	* typeck.c (check_return_expr): Don't mess with a thunk call.

2019-01-28  Jason Merrill  <jason@redhat.com>

	PR c++/89089 - ICE with [[no_unique_address]].
	PR c++/88865 - wrong layout with [[no_unique_address]].
	* class.c (check_field_decls): A potentially-overlapping field makes
	the class non-layout-POD, but not non-empty.
	(end_of_class): Always consider empty data members.
	(layout_class_type): Set DECL_SIZE for empty fields.

2019-01-28  Marek Polacek  <polacek@redhat.com>

	PR c++/88358 - name wrongly treated as type.
	* parser.c (cp_parser_direct_declarator): Don't assume a qualified-id
	in parameter-list is a type if the function's declarator-id is not
	qualified.

2019-01-27  Marek Polacek  <polacek@redhat.com>

	PR c++/88815 - narrowing conversion lost in decltype.
	PR c++/78244 - narrowing conversion in template not detected.
	* cp-tree.h (CONSTRUCTOR_IS_DEPENDENT): New.
	* pt.c (instantiation_dependent_r): Consider a CONSTRUCTOR with
	CONSTRUCTOR_IS_DEPENDENT instantiation-dependent.
	* semantics.c (finish_compound_literal): When the compound literal
	isn't instantiation-dependent and the type isn't type-dependent,
	fall back to the normal processing.  Set CONSTRUCTOR_IS_DEPENDENT.

	PR c++/89024 - ICE with incomplete enum type.
	* call.c (standard_conversion): When converting an
	ARITHMETIC_TYPE_P to an incomplete type, return NULL.

2019-01-25  Paolo Carlini  <paolo.carlini@oracle.com>

	PR c++/88969
	* call.c (build_op_delete_call): Implement 7.6.2.5/(10.1).
	* decl2.c (coerce_delete_type): Use build_pointer_type instead
	of TYPE_POINTER_TO.

2019-01-24  Jason Merrill  <jason@redhat.com>

	PR c++/89001 - mangling of reference temporaries
	* cp-tree.h (struct saved_scope): Add ref_temp_count.
	(current_ref_temp_count): New macro.
	* mangle.c (mangle_ref_init_variable): Use it.
	* typeck2.c (store_init_value): Clear it.
	* call.c (make_temporary_var_for_ref_to_temp): Copy public and
	comdat.

2019-01-24  Jakub Jelinek  <jakub@redhat.com>

	PR c++/88976
	* semantics.c (finish_omp_cancel): Diagnose more than one if
	on #pragma omp cancel with different modifiers.  Use
	maybe_convert_cond when not in template or build_x_binary_op
	otherwise.

2019-01-23  Marek Polacek  <polacek@redhat.com>

	PR c++/88757 - qualified name treated wrongly as type.
	* parser.c (cp_parser_direct_declarator): Don't treat qualified-ids
	in parameter-list as types if name lookup for declarator-id didn't
	find one or more function templates.

2019-01-23  Jakub Jelinek  <jakub@redhat.com>

	PR c/44715
	* cp-gimplify.c (genericize_cp_loop): Call begin_bc_block only
	after genericizing cond and incr expressions.

	PR c++/88984
	* cp-gimplify.c (genericize_switch_stmt): Move cond genericization
	before the begin_bc_block call.

2019-01-21  Jason Merrill  <jason@redhat.com>

	PR c++/87893 - constexpr ctor ICE on ARM.
	PR c++/88293 - ICE with comma expression.
	* constexpr.c (initialized_type): Don't shortcut non-void type.
	Handle COMPOUND_EXPR.
	(cxx_eval_outermost_constant_expr): Return early for void type.

2019-01-21  Jakub Jelinek  <jakub@redhat.com>

	PR c++/88949
	* optimize.c (cxx_copy_decl): New function.
	(clone_body): Use it instead of copy_decl_no_change.

	PR sanitizer/88901
	* typeck.c (cp_build_binary_op): Don't instrument
	SANITIZE_POINTER_COMPARE if processing_template_decl.
	(pointer_diff): Similarly for SANITIZE_POINTER_SUBTRACT.

2019-01-18  Jason Merrill  <jason@redhat.com>

	PR c++/88875 - error with explicit list constructor.
	* call.c (reference_binding): Don't modify EXPR.  Set
	need_temporary_p on the ck_user conversion for a temporary.
	(convert_like_real): Check it.

2019-01-18  H.J. Lu  <hongjiu.lu@intel.com>

	PR c/51628
	PR c/88664
	* call.c (convert_for_arg_passing): Upate the
	warn_for_address_or_pointer_of_packed_member call.
	* typeck.c (convert_for_assignment): Likewise.

2019-01-17  Jason Merrill  <jason@redhat.com>

	PR c++/86205 - ICE with ?: of throw and template-id.
	* pt.c (resolve_nondeduced_context_or_error): Split out from...
	* typeck.c (decay_conversion): ...here.
	* call.c (build_conditional_expr_1): Use it.

	PR c++/86740, ICE with constexpr if and nested generic lambdas.
	* tree.c (cp_walk_subtrees): Handle LAMBDA_EXPR.

2019-01-17  Paolo Carlini  <paolo.carlini@oracle.com>

	* decl.c (grokdeclarator): Use typespec_loc in error messages
	about 'auto' and trailing return type.

2019-01-17  David Malcolm  <dmalcolm@redhat.com>

	PR c++/88699
	* class.c (add_method): Don't use DECL_DESTRUCTOR_P on
	USING_DECLs.

2019-01-17  Nathan Sidwell  <nathan@acm.org>

	PR c++/86610
	* semantics.c (process_outer_var_ref): Only skip dependent types
	in templates.

2019-01-17  Alexandre Oliva  <aoliva@redhat.com>

	PR c++/87768
	* cp-tree.h (saved_scope): Add suppress_location_wrappers.
	* name-lookup.c (do_push_to_top_level): Save and reset it.
	(do_pop_from_top_level): Restore it.

	PR c++/86648
	* pt.c (make_template_placeholder): Use auto_identifier.
	(is_auto): Drop CLASS_PLACEHOLDER_TEMPLATE test.
	* error.c (dump_type): Handle template placeholders.
	* cxx-pretty-print.c (pp_cx_unqualified_id): Likewise.

	PR c++/88146
	* cvt.c (convert_to_void): Handle all cdtor calls as if
	returning void.

2019-01-16  Paolo Carlini  <paolo.carlini@oracle.com>

	* decl.c (grokdeclarator): Use locations[ds_storage_class] in
	error messages about ill-formed uses of mutable.

2019-01-16  Marek Polacek  <polacek@redhat.com>

	PR c++/78244 - narrowing conversion in template not detected.
	* call.c (perform_implicit_conversion_flags): Set
	IMPLICIT_CONV_EXPR_BRACED_INIT.
	* cp-tree.h (IMPLICIT_CONV_EXPR_BRACED_INIT): New.
	* pt.c (tsubst_copy_and_build): Use it.

2019-01-15  David Malcolm  <dmalcolm@redhat.com>

	PR c++/88795
	* pt.c (build_deduction_guide): Bail out if tsubst_arg_types
	fails.

2019-01-15  Paolo Carlini  <paolo.carlini@oracle.com>

	* decl.c (start_decl): Improve error location.
	* decl2.c (grokfield): Likewise.

2019-01-15  Paolo Carlini  <paolo.carlini@oracle.com>

	* decl.c (grokdeclarator): Move further up the location_t loc
	declaration and use the location when building a TYPE_DECL for
	a typedef name.
	* decl2.c (grokbitfield): Use DECL_SOURCE_LOCATION in the error
	about an ill-formed bit-field as typedef.

2019-01-14  Marek Polacek  <polacek@redhat.com>

	PR c++/88830 - ICE with abstract class.
	* decl2.c (maybe_emit_vtables): Check CLASSTYPE_LAZY_DESTRUCTOR.
	Fix formatting.

	PR c++/88825 - ICE with bogus function return type deduction.
	* typeck.c (can_do_nrvo_p): Check error_mark_node.

2019-01-14  Tom Honermann  <tom@honermann.net>

	Implement P0482R5, char8_t: A type for UTF-8 characters and strings
	* cvt.c (type_promotes_to): Handle char8_t promotion.
	* decl.c (grokdeclarator): Handle invalid type specifier
	combinations involving char8_t.
	* lex.c (init_reswords): Add char8_t as a reserved word.
	* mangle.c (write_builtin_type): Add name mangling for char8_t (Du).
	* parser.c (cp_keyword_starts_decl_specifier_p)
	(cp_parser_simple_type_specifier): Recognize char8_t as a simple
	type specifier.
	(cp_parser_string_literal): Use char8_array_type_node for the type
	of CPP_UTF8STRING.
	(cp_parser_set_decl_spec_type): Tolerate char8_t typedefs in system
	headers.
	* rtti.c (emit_support_tinfos): type_info support for char8_t.
	* tree.c (char_type_p): Recognize char8_t as a character type.
	* typeck.c (string_conv_p): Handle conversions of u8 string
	literals of char8_t type.
	(check_literal_operator_args): Handle UDLs with u8 string literals
	of char8_t type.
	* typeck2.c (ordinary_char_type_p): New.
	(digest_init_r): Disallow initializing a char array with a u8 string
	literal.

2019-01-14  Martin Liska  <mliska@suse.cz>

	PR gcov-profile/88263
	* decl2.c (get_tls_wrapper_fn): Use DECL_SOURCE_LOCATION
	as location of the TLS wrapper.

2019-01-12  Paolo Carlini  <paolo.carlini@oracle.com>

	* decl.c (cp_finish_decl): Improve error location.
	* decl2.c (grokfield): Likewise, improve two locations.

2019-01-11  Marek Polacek  <polacek@redhat.com>

	PR c++/88692, c++/87882 - -Wredundant-move false positive with *this.
	* typeck.c (maybe_warn_pessimizing_move): Return if ARG isn't
	ADDR_EXPR.

2019-01-11  Jason Merrill  <jason@redhat.com>

	PR c++/88312 - pack expansion of decltype.
	* pt.c (instantiation_dependent_r): A template non-type parameter
	pack is instantiation-dependent.

2019-01-11  Jason Merrill  <jason@redhat.com>

	PR c++/88613 - ICE with use of const var in lambda.
	* expr.c (mark_use): Fix location wrapper handling.
	* cp-gimplify.c (cp_fold_maybe_rvalue): Call mark_rvalue_use.

2019-01-11  Tobias Burnus  <burnus@net-b.de>

	PR C++/88114
	* decl2.c (maybe_emit_vtables): If needed, generate code for
	the destructor of an abstract class.
	(mark_used): Update comment for older function-name change.

2019-01-11  Paolo Carlini  <paolo.carlini@oracle.com>

	* decl.c (start_decl): Improve error location.
	(grokdeclarator): Likewise, improve two locations.

2019-01-09  Sandra Loosemore  <sandra@codesourcery.com>

	PR other/16615

	* cp-tree.h: Mechanically replace "can not" with "cannot".
	* parser.c: Likewise.
	* pt.c: Likewise.

2019-01-08  Paolo Carlini  <paolo.carlini@oracle.com>

	* decl.c (grok_reference_init): Improve error location.
	(grokdeclarator): Likewise, improve two locations.

2019-01-08  Marek Polacek  <polacek@redhat.com>

	PR c++/88538 - braced-init-list in template-argument-list.
	* parser.c (cp_parser_template_argument): Handle braced-init-list when
	in C++20.

	PR c++/88548 - this accepted in static member functions.
	* parser.c (cp_debug_parser): Adjust printing of
	local_variables_forbidden_p.
	(cp_parser_new): Set local_variables_forbidden_p to 0 rather than false.
	(cp_parser_primary_expression): When checking
	local_variables_forbidden_p, use THIS_FORBIDDEN or
	LOCAL_VARS_FORBIDDEN.
	(cp_parser_lambda_body): Update the type of
	local_variables_forbidden_p.  Set it to 0 rather than false.
	(cp_parser_condition): Adjust call to cp_parser_declarator.
	(cp_parser_explicit_instantiation): Likewise.
	(cp_parser_init_declarator): Likewise.
	(cp_parser_declarator): New parameter.  Use it.
	(cp_parser_direct_declarator): New parameter.  Use it to set
	local_variables_forbidden_p.  Adjust call to cp_parser_declarator.
	(cp_parser_type_id_1): Adjust call to cp_parser_declarator.
	(cp_parser_parameter_declaration): Likewise.
	(cp_parser_default_argument): Update the type of
	local_variables_forbidden_p.  Set it to LOCAL_VARS_AND_THIS_FORBIDDEN
	rather than true.
	(cp_parser_member_declaration): Tell cp_parser_declarator if we saw
	'static' or 'friend'.
	(cp_parser_exception_declaration): Adjust call to cp_parser_declarator.
	(cp_parser_late_parsing_default_args): Update the type of
	local_variables_forbidden_p.  Set it to LOCAL_VARS_AND_THIS_FORBIDDEN
	rather than true.
	(cp_parser_cache_defarg): Adjust call to cp_parser_declarator.
	(cp_parser_objc_class_ivars): Likewise.
	(cp_parser_objc_struct_declaration): Likewise.
	(cp_parser_omp_for_loop_init): Likewise.
	* parser.h (cp_parser): Change the type of local_variables_forbidden_p
	to unsigned char.
	(LOCAL_VARS_FORBIDDEN, LOCAL_VARS_AND_THIS_FORBIDDEN, THIS_FORBIDDEN):
	Define.

2019-01-08  Paolo Carlini  <paolo.carlini@oracle.com>

	* decl.c (start_decl): Improve permerror location.

2019-01-08  Jonathan Wakely  <jwakely@redhat.com>
	    Jakub Jelinek  <jakub@redhat.com>

	PR c++/88554
	* decl.c (finish_function): For -Wreturn-type don't add a return *this;
	fixit hint if current_class_ref is NULL.  Use a single if instead of
	two nested ones.

2019-01-07  Paolo Carlini  <paolo.carlini@oracle.com>

	* decl.c (start_decl): Improve two error_at locations.
	(expand_static_init): Likewise.

2019-01-07  Marek Polacek  <polacek@redhat.com>

	PR c++/88741 - wrong error with initializer-string.
	* decl.c (cp_complete_array_type): Strip any location wrappers.

2019-01-07  Bernd Edlinger  <bernd.edlinger@hotmail.de>

	PR c++/88261
	PR c++/69338
	PR c++/69696
	PR c++/69697
	* cp-tree.h (LOOKUP_ALLOW_FLEXARRAY_INIT): New flag value.
	* typeck2.c (digest_init_r): Raise an error for non-static
	initialization of a flexible array member.
	(process_init_constructor, massage_init_elt,
	process_init_constructor_array, process_init_constructor_record,
	process_init_constructor_union, process_init_constructor): Add the
	flags parameter and pass it thru.
	(store_init_value): Pass LOOKUP_ALLOW_FLEXARRAY_INIT parameter to
	digest_init_flags for static decls.

2019-01-07  Jakub Jelinek  <jakub@redhat.com>

	PR c++/85052
	* cp-tree.h (cp_build_vec_convert): Declare.
	* parser.c (cp_parser_postfix_expression): Parse
	__builtin_convertvector.
	* constexpr.c: Include fold-const-call.h.
	(cxx_eval_internal_function): Handle IFN_VEC_CONVERT.
	(potential_constant_expression_1): Likewise.
	* semantics.c (cp_build_vec_convert): New function.
	* pt.c (tsubst_copy_and_build): Handle CALL_EXPR to
	IFN_VEC_CONVERT.

2019-01-03  Jakub Jelinek  <jakub@redhat.com>

	PR c++/88636
	* decl.c (builtin_function_1): Return result of pushdecl_top_level
	or pushdecl rather than decl.

2019-01-03  Paolo Carlini  <paolo.carlini@oracle.com>

	* tree.c (handle_nodiscard_attribute): Improve warning location.

2019-01-02  Marek Polacek  <polacek@redhat.com>

	PR c++/88612 - ICE with -Waddress-of-packed-member.
	* call.c (convert_for_arg_passing): Only give warnings with tf_warning.
	* typeck.c (convert_for_assignment): Likewise.

	PR c++/88631 - CTAD failing for value-initialization.
	* typeck2.c (build_functional_cast): Try deducing the template
	arguments even if there are no arguments to deduce from.

2019-01-01  Jakub Jelinek  <jakub@redhat.com>

	Update copyright years.

Copyright (C) 2019 Free Software Foundation, Inc.

Copying and distribution of this file, with or without modification,
are permitted in any medium without royalty provided the copyright
notice and this notice are preserved.