2018-04-12  David Malcolm  <dmalcolm@redhat.com>

	PR c++/85385
	* name-lookup.c (macro_use_before_def::maybe_make): New function,
	checking that the use is indeed before the definition.
	(macro_use_before_def::macro_use_before_def): Make private.
	(macro_use_before_def::~macro_use_before_def): Make private.  Move
	check for UNKNOWN_LOCATION to macro_use_before_def::maybe_make.
	(lookup_name_fuzzy): Call macro_use_before_def::maybe_make rather
	than using new directly.

2018-04-12  Jason Merrill  <jason@redhat.com>

	PR c++/85356 - ICE with pointer to member function.
	* pt.c (maybe_instantiate_noexcept): Do instantiate in templates if
	flag_noexcept_type.  Build the new spec within the function context.
	* except.c (build_noexcept_spec): Do get constant value in templates
	if flag_noexcept_type.
	* decl.c (check_redeclaration_exception_specification): Don't
	instantiate noexcept on a dependent declaration.

2018-04-12  Marek Polacek  <polacek@redhat.com>

	PR c++/85258
	* constexpr.c (reduced_constant_expression_p): Return false for null
	trees.

2018-04-11  Marek Polacek  <polacek@redhat.com>

	PR c++/85032
	* constexpr.c (potential_constant_expression_1): Consider conversions
	from classes to literal types potentially constant.

2018-04-10  Paolo Carlini  <paolo.carlini@oracle.com>

	PR c++/70808
	* init.c (build_zero_init_1): Handle NULLPTR_TYPE_P being true of
	the type like TYPE_PTR_OR_PTRMEM_P.

2018-04-10  Jason Merrill  <jason@redhat.com>

	PR debug/65821 - wrong location for main().
	* call.c (clear_location_r, convert_default_arg): Revert.
	* tree.c (break_out_target_exprs): Add clear_location parm.
	(struct bot_data): New.
	(bot_manip): Clear location if requested.
	* init.c (get_nsdmi): Pass clear_location.

2018-04-10  David Malcolm  <dmalcolm@redhat.com>

	PR c++/85110
	* call.c (get_fndecl_argument_location): Make non-static.
	* cp-tree.h (get_fndecl_argument_location): New decl.
	* typeck.c (convert_for_assignment): When complaining due to
	conversions for an argument, show the location of the parameter
	within the decl.

2018-04-10  Jakub Jelinek  <jakub@redhat.com>

	PR c++/85312 - P0962 cleanup
	* parser.c (cp_parser_perform_range_for_lookup): Remove unreachable
	diagnostics.

2018-04-10  Jason Merrill  <jason@redhat.com>

	PR debug/65821 - wrong location for main().
	* call.c (clear_location_r): New.
	(convert_default_arg): Use it.
	* tree.c (bot_manip): Remove builtin_LINE/FILE handling.

	PR c++/85285 - ICE with flexible array after substitution.
	* pt.c (instantiate_class_template_1): Check for flexible array in
	union.

2018-04-09  Paolo Carlini  <paolo.carlini@oracle.com>

	PR c++/85227
	* decl.c (cp_finish_decomp): In a template, if the type is incomplete
	issue a pedwarn and defer trying to do bindings.

2018-04-09  Jason Merrill  <jason@redhat.com>

	PR c++/85279 - dump_expr doesn't understand decltype.
	* error.c (dump_expr): Handle DECLTYPE_TYPE.

	PR c++/85262 - ICE with redundant qualification on constructor.
	* call.c (build_new_method_call_1): Move make_args_non_dependent
	after A::A() handling.

	PR c++/85277 - ICE with invalid offsetof.
	* semantics.c (finish_offsetof): Avoid passing non-DECL to %qD.
	Adjust -Winvalid-offsetof diagnostic to say conditionally supported.

	PR c++/85264 - ICE with excess template-parameter-list.
	* parser.c (cp_parser_check_template_parameters): Add template_id_p
	parameter.  Don't allow an extra template header if true.
	(cp_parser_class_head): Pass template_id_p.
	(cp_parser_elaborated_type_specifier): Likewise.
	(cp_parser_alias_declaration): Likewise.
	(cp_parser_check_declarator_template_parameters): Likewise.

2018-04-09  Jakub Jelinek  <jakub@redhat.com>

	PR c++/85194
	* parser.c (cp_parser_simple_declaration): For structured bindings,
	if *maybe_range_for_decl is NULL after parsing it, set it to
	error_mark_node.

2018-04-09  Jason Merrill  <jason@redhat.com>

	PR c++/85256 - ICE capturing pointer to VLA.
	* lambda.c (add_capture): Distinguish between variable-size and
	variably-modified types.

2018-04-06  Jason Merrill  <jason@redhat.com>

	PR c++/85214 - ICE with alias, generic lambda, constexpr if.
	* pt.c (extract_locals_r): Remember local typedefs.

2018-04-06  David Malcolm  <dmalcolm@redhat.com>

	PR c++/84269
	* name-lookup.c (struct std_name_hint): Move out of
	get_std_name_hint; add field "min_dialect".
	(get_std_name_hint): Add min_dialect values to all initializers.
	Add <any>, <atomic>, <bitset>, <condition_variable>, <functional>,
	<future>, <istream>, <iterator>, <ostream>, <mutex>, <optional>,
	<shared_mutex>, <string_view>, <thread>, and <variant>.
	Add fstream, ifstream, and ofstream to <fstream>.
	Add istringstream, ostringstream, and stringstream to <sstream>.
	Add basic_string to <string>.
	Add tuple_element and tuple_size to <tuple>.
	Add declval to <utility>.
	Fix ordering of <queue> and <tuple>.
	Return a std_name_hint, rather than a const char *.
	(get_cxx_dialect_name): New function.
	(maybe_suggest_missing_std_header): Detect names that aren't yet
	available in the current dialect, and instead of suggesting a
	missing #include, warn about the dialect.

2018-04-06  Jakub Jelinek  <jakub@redhat.com>

	PR c++/85210
	* pt.c (tsubst_decomp_names): Return error_mark_node and assert
	errorcount is set if tsubst doesn't return a VAR_DECL.

2018-04-06  David Malcolm  <dmalcolm@redhat.com>

	PR c++/85021
	* name-lookup.c (using_directives_contain_std_p): New function.
	(has_using_namespace_std_directive_p): New function.
	(suggest_alternatives_for): Simplify if/else logic using early
	returns.  If no candidates were found, and there's a
	"using namespace std;" directive, call
	maybe_suggest_missing_std_header.
	(maybe_suggest_missing_header): Split later part of the function
	into..
	(maybe_suggest_missing_std_header): New.

2018-04-06  Jason Merrill  <jason@redhat.com>

	PR c++/85242 - ICE with class definition in template parm.
	* cp-tree.h (PROCESSING_REAL_TEMPLATE_DECL_P): False if
	processing_template_parmlist.

	PR c++/85240 - LTO ICE with using of undeduced auto fn.
	* cp-gimplify.c (cp_genericize_r): Discard using of undeduced auto.

2018-04-05  Jakub Jelinek  <jakub@redhat.com>

	PR c++/85209
	* pt.c (tsubst_decomp_names): Don't fail or ICE if DECL_CHAIN (decl3)
	is not prev, if prev == decl.

	PR c++/85208
	* decl.c (start_decl): For DECL_DECOMPOSITION_P decls, don't call
	maybe_apply_pragma_weak here...
	(cp_maybe_mangle_decomp): ... but call it here instead.

2018-04-05  Jason Merrill  <jason@redhat.com>

	PR c++/85136 - ICE with designated init in template.
	* decl.c (maybe_deduce_size_from_array_init): Handle dependent
	designated initializer.
	(check_array_designated_initializer): Update ce->index with the
	constant value.

	PR c++/83808 - ICE with VLA initialization.
	* typeck2.c (process_init_constructor_array): Don't require a VLA
	initializer to have VLA type.

2018-04-05  Paolo Carlini  <paolo.carlini@oracle.com>

	PR c++/80956
	* call.c (convert_like_real): Fail gracefully for a broken
	std::initializer_list, missing a definition.

	* name-lookup.c (do_pushtag): Tweak message, use %< and %>.

2018-04-05  Paolo Carlini  <paolo.carlini@oracle.com>

	PR c++/84792
	* decl.c (grokdeclarator): Fix diagnostic about typedef name used
	as nested-name-specifier, keep type and TREE_TYPE (decl) in sync.

2018-04-05  Jason Merrill  <jason@redhat.com>

	PR c++/82152 - ICE with class deduction and inherited ctor.
	* pt.c (do_class_deduction): Ignore inherited ctors.

	PR c++/84665 - ICE with array of empty class.
	* decl2.c (cp_check_const_attributes): Use fold_non_dependent_expr.

	PR c++/85228 - ICE with lambda in enumerator in template.
	* pt.c (bt_instantiate_type_proc): Don't assume
	CLASSTYPE_TEMPLATE_INFO is non-null.

2018-04-05  Ville Voutilainen  <ville.voutilainen@gmail.com>

	Implement P0969
	* decl.c (find_decomp_class_base): Check accessibility instead
	of declared access, adjust diagnostic.

2018-04-05  Ville Voutilainen  <ville.voutilainen@gmail.com>

	Implement P0961
	* decl.c (get_tuple_decomp_init): Check the templatedness
	of a member get.

2018-04-05  Jason Merrill  <jason@redhat.com>

	PR c++/85200 - ICE with constexpr if in generic lambda.
	* pt.c (extract_locals_r): Don't record the local specs of variables
	declared within the pattern.

2018-04-05  Alexandre Oliva <aoliva@redhat.com>

	PR c++/84979
	* pt.c (check_auto_in_tmpl_args): New.
	(tsubst_qualified_id): Use it to reject template args
	referencing auto for non-type templates.
	* parser.c (cp_parser_template_id): Likewise.
	* cp-tree.h (check_auto_in_tmpl_args): Declare.
	* typeck2.c (build_functional_cast): Report correct location
	for invalid use of auto.

2018-04-04  Jason Merrill  <jason@redhat.com>

	PR c++/85215 - ICE with copy-init from conversion.
	* call.c (merge_conversion_sequences): Fix type of direct binding
	sequence.

	PR c++/84938 - ICE with division by ~-1.
	* call.c (set_up_extended_ref_temp): Call cp_fully_fold.

	PR c++/84936 - ICE with unexpanded pack in mem-initializer.
	* parser.c (cp_parser_mem_initializer_list): Call
	check_for_bare_parameter_packs.

2018-04-04  Jakub Jelinek  <jakub@redhat.com>

	PR inline-asm/85172
	* constexpr.c (cxx_eval_builtin_function_call): For calls to
	builtin_valid_in_constant_expr_p functions, don't call
	cxx_eval_constant_expression if argument is not
	potential_constant_expression.

	PR c++/85146
	* cp-tree.h (calculate_bases, calculate_direct_bases): Add complain
	argument.
	* semantics.c (calculate_bases): Add complain argument.  Use
	complete_type_or_maybe_complain instead of just complete_type and
	return an empty vector if it fails.  Move make_tree_vector () call
	after early return.  Formatting fixes.
	(calculate_direct_bases): Likewise.  Call release_tree_vector at the
	end.
	(dfs_calculate_bases_post, calculate_bases_helper): Formatting fixes.
	* pt.c (tsubst_pack_expansion): Adjust calculate_bases and
	calculate_direct_bases callers, formatting fixes.

2018-04-04  Jason Merrill  <jason@redhat.com>

	PR c++/85006 - -fconcepts ICE with A<auto...> return type
	* pt.c (tsubst_pack_expansion): Allow unsubstituted auto pack.

	PR c++/85200 - ICE with constexpr if in generic lambda.
	* tree.c (cp_walk_subtrees): Walk into DECL_EXPR in templates.

	PR c++/84221 - bogus -Wunused with attribute and template.
	* decl2.c (is_late_template_attribute): Handle unused and used
	normally on non-TYPE_DECL.

	PR c++/85135 - ICE with omitted template arguments.
	* decl.c (grokdeclarator): Catch deduced class type in trailing
	return type.

	PR c++/85133 - ICE with missing concept initializer.
	* decl.c (cp_finish_decl): If a concept initializer is missing, use
	true.

	PR c++/85118 - wrong error with generic lambda and std::bind.
	* call.c (add_template_conv_candidate): Disable if there are any
	call operators.

	PR c++/85141 - ICE with compound assignment and static member fn.
	* typeck.c (cp_build_modify_expr): Call decay_conversion for RHS of
	compound assignment.

	PR c++/85148 - ICE with 'this' in array NSDMI.
	* tree.c (replace_placeholders_r): Use handled_component_p.

2018-04-04  Ville Voutilainen  <ville.voutilainen@gmail.com>

	PR c++/65923
	* decl.c (grokfndecl): Handle standard UDL diagnostics here..
	* parser.c (cp_parser_unqualified_id): ..not here.

2018-04-04  Alexandre Oliva <aoliva@redhat.com>

	PR c++/84943
	* typeck.c (cp_build_addr_expr_1): Mark FUNCTION_DECL as
	used.
	* decl2.c (mark_used): Return without effects if tf_conv.

2018-04-03  Jason Merrill  <jason@redhat.com>

	PR c++/85092 - C++17 ICE with unused list constructor.
	* call.c (conv_binds_ref_to_prvalue): Also count ck_identity
	from a TARGET_EXPR.

	PR c++/85113 - ICE with constexpr and __builtin_constant_p.
	* constexpr.c (cxx_eval_builtin_function_call): Only defer
	__builtin_constant_p if ctx->quiet.

2018-04-03  Paolo Carlini  <paolo.carlini@oracle.com>

	PR c++/84768
	* pt.c (rewrite_template_parm): If the first argument is
	error_mark_node return it immediately.
	(build_deduction_guide): Check the return value of the
	latter for error_mark_node.
	(do_class_deduction): Check the return value of the latter.

2018-04-03  Jason Merrill  <jason@redhat.com>

	* semantics.c (finish_if_stmt_cond): Use
	instantiation_dependent_expression_p.

	PR c++/85149 - generic lambda and constexpr if.
	* pt.c (build_extra_args, add_extra_args): Split from
	tsubst_pack_expansion.
	(tsubst_expr) [IF_STMT]: Use them.
	* cp-tree.h (IF_STMT_EXTRA_ARGS): New.

	* typeck.c (merge_types): Limit matching attribute shortcut to
	the default case.

2018-04-03  Jakub Jelinek  <jakub@redhat.com>

	PR c++/85147
	* pt.c (fixed_parameter_pack_p_1): Punt if parm is error_mark_node.

	PR c++/85140
	* name-lookup.c (handle_namespace_attrs): Return early if attributes
	is error_mark_node.

	PR c++/85134
	* decl.c (cp_finish_decl): If ensure_literal_type_for_constexpr_object
	fails, after clearing DECL_DECLARED_CONSTEXPR_P don't return early,
	instead for static data members clear init and set DECL_EXTERNAL.

2018-04-02  Jason Merrill  <jason@redhat.com>

	PR c++/64095 - auto... parameter pack.
	* parser.c (cp_parser_parameter_declaration): Handle turning autos
	into packs here.
	(cp_parser_parameter_declaration_list): Not here.

2018-03-31  Alexandre Oliva <aoliva@redhat.com>

	PR c++/85027
	* class.c (instantiate_type): Peel off SAVE_EXPR before
	BASELINK.

2018-03-30  Jason Merrill  <jason@redhat.com>

	* typeck2.c (process_init_constructor_record): Use
	init_list_type_node for the CONSTRUCTOR around an anonymous union
	designated initializer.

2018-03-30  Jakub Jelinek  <jakub@redhat.com>

	PR c++/84791
	* semantics.c (finish_omp_reduction_clause): If
	OMP_CLAUSE_REDUCTION_PLACEHOLDER is error_mark_node, return true
	even if processing_template_decl.

2018-03-29  David Malcolm  <dmalcolm@redhat.com>

	PR c++/84269
	* name-lookup.c (get_std_name_hint): Add names from <memory>,
	<tuple>, and <utility>.

2018-03-29  Jason Merrill  <jason@redhat.com>

	PR c++/85093 - too many template args with pack expansion.
	* pt.c (coerce_template_parms): Keep pack expansion args that will
	need to be empty.

2018-03-29  Jason Merrill  <jason@redhat.com>

	* pt.c (build_non_dependent_expr): Propagate expr location.

2018-03-27  Jason Merrill  <jason@redhat.com>

	PR c++/85060 - wrong-code with call to base member in template.
	* search.c (any_dependent_bases_p): Check uses_template_parms
	rather than processing_template_decl.

2018-03-29  David Malcolm  <dmalcolm@redhat.com>

	PR c++/85110
	* typeck.c (convert_for_assignment): When complaining due to
	conversions for an argument, attempt to use the location of the
	argument.

2018-03-28  Paolo Carlini  <paolo.carlini@oracle.com>

	PR c++/85028
	* pt.c (tsubst_default_argument): Early return if the type of the
	parameter is erroneous.

2018-03-28  Alexandre Oliva <aoliva@redhat.com>

	PR c++/84973
	* decl2.c (note_vague_linkage_fn): Don't defer uninstantiated
	templates.

	PR c++/84968
	* tree.c (strip_typedefs_expr): Reject STATEMENT_LISTs.

2018-03-27  Paolo Carlini  <paolo.carlini@oracle.com>

	PR c++/85067
	* method.c (defaulted_late_check): Partially revert r253321 changes,
	do not early return upon error.

2018-03-27  Jakub Jelinek  <jakub@redhat.com>

	PR c++/85077
	* cp-gimplify.c (cp_fold) <case CONSTRUCTOR>: For ctors with vector
	type call fold to generate VECTOR_CSTs when possible.

	PR c++/85076
	* tree.c (cp_build_reference_type): If to_type is error_mark_node,
	return it right away.

2018-03-27  Volker Reichelt  <v.reichelt@netcologne.de>

	* search.c (check_final_overrider): Use inform instead of error
	for the diagnostics of the overridden functions.  Tweak wording.

2018-03-27  Jakub Jelinek  <jakub@redhat.com>

	PR c++/85068
	* class.c (update_vtable_entry_for_fn): Don't ICE if base_binfo
	is NULL.  Assert if thunk_binfo is NULL then errorcount is non-zero.

2018-03-27  Paolo Carlini  <paolo.carlini@oracle.com>
	    Jason Merrill  <jason@redhat.com>

	PR c++/84632
	* init.c (build_aggr_init): When initializing from array,
	reject anything but CONSTRUCTORs and TARGET_EXPRs.
	(build_vec_init): Handle separately ARRAY_TYPEs.

2018-03-26  Jason Merrill  <jason@redhat.com>

	PR c++/85062 - ICE with alignas in wrong place.
	* decl.c (grokdeclarator): Ignore attributes on type-specifiers
	here.

	PR c++/85049 - ICE with __integer_pack.
	* pt.c (unify_pack_expansion): Don't try to deduce generated packs.
	* cp-tree.h (TEMPLATE_PARM_P): New.

2018-03-23  Jason Merrill  <jason@redhat.com>

	PR c++/78489 - wrong SFINAE behavior.

	PR c++/84489
	* pt.c (type_unification_real): Don't defer substitution failure.

2018-03-23  Jakub Jelinek  <jakub@redhat.com>

	PR c++/85015
	* decl.c (compute_array_index_type): Set osize to mark_rvalue_use
	result.

	PR c++/84942
	* pt.c (tsubst_copy_and_build) <case FIX_TRUNC_EXPR>: Replace
	cp_build_unary_op call with gcc_unreachable ().

2018-03-23  Marek Polacek  <polacek@redhat.com>

	PR c++/85045
	* cxx-pretty-print.c (cxx_pretty_printer::multiplicative_expression):
	Handle EXACT_DIV_EXPR and RDIV_EXPR.  Tweak condition.
	(cxx_pretty_printer::expression): Handle EXACT_DIV_EXPR and RDIV_EXPR.

2018-03-23  Ville Voutilainen  <ville.voutilainen@gmail.com>

	Implement P0962
	* parser.c (cp_parser_perform_range_for_lookup): Change
	the condition for deciding whether to use members.

2018-03-23  Marek Polacek  <polacek@redhat.com>

	PR c++/85033
	* semantics.c (finish_offsetof): Don't allow CONST_DECLs.

2018-03-23  Alexandre Oliva <aoliva@redhat.com>

	PR c++/71251
	* parser.c (cp_parser_alias_declaration): Call
	parser_check_template_parameters.

	PR c++/84789
	* pt.c (resolve_typename_type): Drop assert that stopped
	simplification to template-independent types.  Add assert to
	verify the initial scope is template dependent.
	* parser.c (cp_parser_parse_and_diagnose_invalid_type_name):
	Reparse the id expression as a type-name, not a declarator.

	PR c++/84729
	* init.c (build_vec_init): Error at parenthesized array init.

	PR c++/84610
	PR c++/84642
	PR c++/84942
	* cp-tree.h (temp_override): New template class, generalizing
	a cleanup that was only used...
	* parser.c (cp_parser_parameter_declaration_clause):
	... here for auto_is_implicit_function_template_parm_p.
	(cp_parser_gnu_attributes_opt): Use it here as well.
	(cp_parser_std_attribute): Likewise.

2018-03-22  Marek Polacek  <polacek@redhat.com>

	PR c++/84854
	* semantics.c (finish_if_stmt_cond): Check if the type of the condition
	is boolean.

2018-03-21  Jason Merrill  <jason@redhat.com>

	PR c++/81311 - wrong C++17 overload resolution.
	* call.c (build_user_type_conversion_1): Remove C++17 code.
	(conv_binds_ref_to_prvalue): New.
	(build_over_call): Handle C++17 copy elision.
	(build_special_member_call): Only do C++17 copy elision here if the
	argument is already the right type.

2018-03-21  Alexandre Oliva <aoliva@redhat.com>

	PR c++/71965
	* init.c (build_vec_init): Silence error, former sorry,
	without tf_error.

	PR c++/84610
	PR c++/84642
	* parser.c (abort_fully_implicit_template_p): New.
	(cp_parser_skip_to_end_of_statement): Use it.
	(cp_parser_skip_to_end_of_block_or_statement): Likewise.
	(finish_fully_implicit_template_p): Clear
	implicit_template_parms and implicit_template_scope.

2018-03-21  Paolo Carlini  <paolo.carlini@oracle.com>

	PR c++/84972
	* decl.c (maybe_deduce_size_from_array_init): Set TREE_TYPE to
	error_mark_node when check_array_designated_initializer fails.

2018-03-21  Jakub Jelinek  <jakub@redhat.com>

	PR c++/84961
	* cp-tree.h (genericize_compound_lvalue): Declare.
	* typeck.c (genericize_compound_lvalue): New function.
	(unary_complex_lvalue, cp_build_modify_expr): Use it.
	* semantics.c (finish_asm_stmt): Replace MODIFY_EXPR, PREINCREMENT_EXPR
	and PREDECREMENT_EXPR in output and "m" constrained input operands with
	COMPOUND_EXPR.  Call cxx_mark_addressable on the rightmost
	COMPOUND_EXPR operand.

2018-03-21  Nathan Sidwell  <nathan@acm.org>

	PR c++/85008
	* tree.c (decl_linkage): Use DECL_CLONED_FUNCTION_P.
	* decl2.c (vague_linkage_p): Likewise.

2018-03-21  David Malcolm  <dmalcolm@redhat.com>

	PR c++/84994
	* constexpr.c (constexpr_fn_retval): Make non-"static".
	* cp-tree.h (constexpr_fn_retval): New decl.
	* search.c (direct_accessor_p): Update leading comment.
	(reference_accessor_p): Likewise.
	(field_accessor_p): Replace check that function body is a
	RETURN_EXPR with a call to constexpr_fn_retval.  Fix
	indentation of "field_type" decl.

2018-03-21  Nathan Sidwell  <nathan@acm.org>

	PR c++/84804
	* name-lookup.c (do_pushtag): Permit lambdas to be pushed into
	complete classes.

2018-03-21  Martin Sebor  <msebor@redhat.com>

	PR c++/84850
	* call.c (first_non_public_field): New template and function.
	(first_non_trivial_field): New function.
	(maybe_warn_class_memaccess): Call them.

2018-03-21  David Malcolm  <dmalcolm@redhat.com>

	PR c++/84892
	* search.c (field_accessor_p): Use class_of_this_parm rather than
	type_of_this_parm, to check that "this" is a "const T *", rather
	than a "T *const".

2018-03-21  Nathan Sidwell  <nathan@acm.org>

	* class.c (finish_struct_anon_r): Refactor, deprecate anything
	other than public non-static data members.
	* parser.c (cp_parser_init_declarator): Deprecate attributes after
	parenthesized initializer.

	PR c++/84836
	* name-lookup.c (update_binding): Correct logic for local binding
	update.

2018-03-21  Marek Polacek  <polacek@redhat.com>

	PR c++/71638, ICE with NSDMI and reference.
	* constexpr.c (cxx_eval_bare_aggregate): Update constructor's flags
	even when we replace an element.

2018-03-20  Marek Polacek  <polacek@redhat.com>

	PR c++/84978, ICE with NRVO.
	* constexpr.c (cxx_eval_constant_expression): Handle the case when
	a RESULT_DECL isn't in the hash map.

2018-03-20  Jason Merrill  <jason@redhat.com>

	PR c++/84978, ICE with NRVO.
	* cvt.c (cp_get_fndecl_from_callee): Add fold parameter.
	(cp_get_callee_fndecl_nofold): New.
	* cp-gimplify.c (cp_genericize_r): Use it instead.
	* call.c (check_self_delegation): Likewise.

2018-03-20  Nathan Sidwell  <nathan@acm.org>

	PR c++/84962
	* name-lookup.c (pushdecl_class_level): Push anon-struct's
	member_vec, if there is one.

	PR c++/84970
	* cp-tree.h (lookup_list_keep): Declare.
	* tree.c (lookup_list_keep): New, broken out of ...
	(build_min): ... here.  Call it.
	* decl.c (cp_finish_decl): Call lookup_list_keep.

2018-03-19  Jason Merrill  <jason@redhat.com>

	PR c++/84937 - ICE with class deduction and auto.
	* pt.c (rewrite_template_parm): Fix auto handling.

2018-03-19  Marek Polacek  <polacek@redhat.com>

	PR c++/84925
	* pt.c (enclosing_instantiation_of): Check if fn is null.

	PR c++/84927
	* constexpr.c (cxx_eval_bare_aggregate): Update constructor's flags
	as we evaluate the elements.
	(cxx_eval_constant_expression): Verify constructor's flags
	unconditionally.

2018-03-19  Jason Merrill  <jason@redhat.com>

	PR c++/71834 - template-id with too few arguments.
	* pt.c (coerce_template_parms): Check fixed_parameter_pack_p.

2018-03-19  Nathan Sidwell  <nathan@acm.org>

	PR c++/84835
	* lambda.c (maybe_add_lambda_conv_op): Force C++ linkage.
	* pt.c (build_template_decl): Propagate language linkage.

	PR c++/84812
	* name-lookup.c (set_local_extern_decl_linkage): Defend against
	ambiguous lookups.

2018-03-16  Jakub Jelinek  <jakub@redhat.com>

	PR c/84910
	* parser.c (cp_parser_lambda_introducer): Remove trailing space from
	diagnostics.
	* method.c (synthesize_method): Likewise.
	* pt.c (convert_nontype_argument): Likewise.

2018-03-16  Jason Merrill  <jason@redhat.com>

	PR c++/84720 - ICE with rvalue ref non-type argument.
	* pt.c (invalid_nontype_parm_type_p): Prohibit rvalue reference.
	(convert_nontype_argument): Revert earlier change.

	PR c++/80227 - SFINAE and negative array size.
	* decl.c (compute_array_index_type): Use
	build_converted_constant_expr and valid_constant_size_p.

	PR c++/84906 - silent wrong code with ambiguous conversion.
	* call.c (build_user_type_conversion_1): Set need_temporary_p on
	ambiguous conversion.
	(convert_like_real): Check it.

	PR c++/83937 - wrong C++17 handling of init-list ctor argument.
	* call.c (build_special_member_call): Don't convert an init-list
	argument directly to the class type.

2018-03-16  Jakub Jelinek  <jakub@redhat.com>

	PR c++/79937
	PR c++/82410
	* cp-tree.h (CONSTRUCTOR_PLACEHOLDER_BOUNDARY): Define.
	(find_placeholder): Declare.
	* tree.c (struct replace_placeholders_t): Add exp member.
	(replace_placeholders_r): Don't walk into ctors with
	CONSTRUCTOR_PLACEHOLDER_BOUNDARY flag set, unless they are equal to
	d->exp.  Replace PLACEHOLDER_EXPR with unshare_expr (x) rather than x.
	(replace_placeholders): Initialize data.exp.
	(find_placeholders_r, find_placeholders): New functions.
	* typeck2.c (process_init_constructor_record,
	process_init_constructor_union): Set CONSTRUCTOR_PLACEHOLDER_BOUNDARY
	if adding NSDMI on which find_placeholder returns true.
	* call.c (build_over_call): Don't call replace_placeholders here.
	* cp-gimplify.c (cp_genericize_r): Set TARGET_EXPR_NO_ELIDE on
	TARGET_EXPRs with CONSTRUCTOR_PLACEHOLDER_BOUNDARY set on
	TARGET_EXPR_INITIAL.
	(cp_fold): Copy over CONSTRUCTOR_PLACEHOLDER_BOUNDARY bit to new
	ctor.

2018-03-16  Jason Merrill  <jason@redhat.com>

	PR c++/83911 - ICE with multiversioned constructor.
	* cp-gimplify.c (cp_genericize_r): Replace versioned function with
	dispatchere here.
	* call.c (build_over_call): Not here.

2018-03-16  Jakub Jelinek  <jakub@redhat.com>

	PR c++/84874
	* decl.c (reshape_init_class): Don't assert d->cur->index == field
	if d->cur->index is a FIELD_DECL, instead set field to d->cur->index.

2018-03-15  Jakub Jelinek  <jakub@redhat.com>

	PR c++/84222
	* cp-tree.h (cp_warn_deprecated_use): Declare.
	* tree.c (cp_warn_deprecated_use): New function.
	* typeck2.c (build_functional_cast): Use it.
	* decl.c (grokparms): Likewise.
	(grokdeclarator): Likewise.  Temporarily push nested class scope
	around grokparms call for out of class member definitions.

2018-03-14  Jason Merrill  <jason@redhat.com>

	PR c++/84820 - no error for invalid qualified-id.
	* parser.c (cp_parser_make_indirect_declarator): Don't wrap
	cp_error_declarator.

	PR c++/84801 - ICE with unexpanded pack in lambda.
	* pt.c (check_for_bare_parameter_packs): Don't return early for a
	lambda in non-template context.

	PR c++/81236 - auto variable and auto function
	* pt.c (tsubst_baselink): Update the type of the BASELINK after
	mark_used.

2018-03-14  Jason Merrill  <jason@redhat.com>

	PR c++/83916 - ICE with template template parameters.
	* pt.c (convert_template_argument): Don't substitute into type of
	non-type parameter if we don't have enough arg levels.
	(unify): Likewise.

2018-03-14  Marek Polacek  <polacek@redhat.com>

	PR c++/84596
	* semantics.c (finish_static_assert): Check
	instantiation_dependent_expression_p instead of
	{type,value}_dependent_expression_p.

2018-03-13  Paolo Carlini  <paolo.carlini@oracle.com>
	    Jason Merrill  <jason@redhat.com>

	PR c++/82336 - link error with list-init default argument.
	* decl.c (check_default_argument): Unshare an initializer list.

2018-03-13  Jakub Jelinek  <jakub@redhat.com>

	PR c++/84843
	* decl.c (duplicate_decls): For redefinition of built-in, use error
	and return error_mark_node.  For redeclaration, return error_mark_node
	rather than olddecl if !flag_permissive.

2018-03-13  Jason Merrill  <jason@redhat.com>

	PR c++/82565 - ICE with concepts and generic lambda.
	* pt.c (instantiate_decl): Clear fn_context for lambdas.

2018-03-13  Jason Merrill  <jason@redhat.com>

	PR c++/84720 - ICE with rvalue ref non-type argument.
	* pt.c (convert_nontype_argument): Handle rvalue references.

	PR c++/84839 - ICE with decltype of parameter pack.
	* pt.c (tsubst_pack_expansion): Set cp_unevaluated_operand while
	instantiating dummy parms.

	* parser.c (cp_parser_simple_type_specifier): Pedwarn about auto
	parameter even without -Wpedantic.

	PR c++/84798 - ICE with auto in abstract function declarator.
	* parser.c (cp_parser_parameter_declaration_clause): Check
	parser->default_arg_ok_p.

2018-03-13  Jakub Jelinek  <jakub@redhat.com>

	PR c++/84808
	* constexpr.c (find_array_ctor_elt): Don't use elt reference after
	first potential CONSTRUCTOR_ELTS reallocation.  Convert dindex to
	sizetype.  Formatting fixes.

2018-03-12  Jason Merrill  <jason@redhat.com>

	PR c++/84355 - ICE with deduction for member class template.
	* pt.c (tsubst) [TEMPLATE_TYPE_PARM]: Always substitute into
	CLASS_PLACEHOLDER_TEMPLATE.

	PR c++/84802 - ICE capturing uninstantiated class.
	* lambda.c (build_capture_proxy): Call complete_type.

2018-03-09  Jason Merrill  <jason@redhat.com>

	PR c++/84770 - ICE with typedef and parameter pack.
	* pt.c (verify_unstripped_args_1): Split out from
	verify_unstripped_args.

	PR c++/84785 - ICE with alias template and default targs.
	* pt.c (type_unification_real): Set processing_template_decl if
	saw_undeduced == 1.

	PR c++/84752 - ICE with capture of constexpr array.
	* call.c (standard_conversion): Set rvaluedness_matches_p on the
	identity conversion under ck_lvalue.

2018-03-09  Jason Merrill  <jason@redhat.com>
	    Paolo Carlini  <paolo.carlini@oracle.com>

	PR c++/71169
	PR c++/71832
	* pt.c (any_erroneous_template_args_p): New.
	* cp-tree.h (any_erroneous_template_args_p): Declare it.
	* parser.c (cp_parser_class_specifier_1): Use it.

2018-03-09  Jason Merrill  <jason@redhat.com>

	PR c++/84726 - unnecessary capture of constant vars.
	* cp-tree.h (LAMBDA_CAPTURE_EXPLICIT_P)
	(LAMBDA_EXPR_CAPTURE_OPTIMIZED): New.
	* expr.c (mark_use): Set LAMBDA_EXPR_CAPTURE_OPTIMIZED.
	* lambda.c (is_constant_capture_proxy)
	(current_lambda_expr, var_to_maybe_prune, mark_const_cap_r)
	(prune_lambda_captures): New.
	(finish_lambda_function): Call prune_lambda_captures.

2018-03-09  Jason Merrill  <jason@redhat.com>
	    Jakub Jelinek  <jakub@redhat.com>

	PR c++/84076
	* call.c (convert_arg_to_ellipsis): Instead of cp_build_addr_expr
	build ADDR_EXPR with REFERENCE_TYPE.
	(build_over_call): For purposes of check_function_arguments, if
	argarray[j] is ADDR_EXPR with REFERENCE_TYPE created above, use
	its operand rather than the argument itself.

2018-03-09  Jakub Jelinek  <jakub@redhat.com>

	PR c++/84724
	* decl.c (duplicate_decls): Don't override __* prefixed builtins
	except for __[^b]*_chk, instead issue permerror and for -fpermissive
	also a note and return olddecl.

2018-03-09  Nathan Sidwell  <nathan@acm.org>

	PR c++/84733
	* name-lookup.c (do_pushdecl_with_scope): Only clear
	current_function_decl when pushing a non-class (i.e. namespace)
	scope.

2018-03-08  Jason Merrill  <jason@redhat.com>
	    Jakub Jelinek  <jakub@redhat.com>

	PR c++/80598
	* call.c (build_over_call): In templates set TREE_USED (first_fn) when
	not calling mark_used for the benefit of -Wunused-function warning.

2018-03-06  Jason Merrill  <jason@redhat.com>

	* lambda.c (is_capture_proxy_with_ref): Remove.
	* constexpr.c, expr.c, cp-tree.h, semantics.c: Adjust.

2018-03-06  Marek Polacek  <polacek@redhat.com>

	PR c++/84684
	* constexpr.c (cxx_bind_parameters_in_call): Unshare evaluated
	arguments.

2018-03-06  Alexandre Oliva <aoliva@redhat.com>

	PR c++/84231
	* tree.c (lvalue_kind): Use presence/absence of REFERENCE_TYPE
	only while processing template decls.
	* typeck.c (build_x_conditional_expr): Move wrapping of
	reference type around type...
	* call.c (build_conditional_expr_1): ... here.  Rename
	is_lvalue to is_glvalue.
	* parser.c (cp_parser_fold_expression): Catch REFERENCE_REF_P
	INDIRECT_REF of COND_EXPR too.

	PR c++/84593
	* init.c (build_zero_init_1): Zero-initialize references.

	PR c++/84492
	* semantics.c (finish_stmt_expr_expr): Reject unresolved
	overloads used as stmt expr values.

2018-03-05  Jason Merrill  <jason@redhat.com>

	PR c++/84708 - ICE with lambda in local class NSDMI.
	* lambda.c (lambda_expr_this_capture): Handle local class NSDMI
	context.

2018-03-05  Jakub Jelinek  <jakub@redhat.com>

	PR c++/84684
	* constexpr.c (constexpr_call_hasher::equal): Return false if
	lhs->hash != rhs->hash.  Change return 1 to return true and
	return 0 to return false.

2018-03-05  Nathan Sidwell  <nathan@acm.org>

	PR c++/84702
	* pt.c (process_template_arg): Mark lookup_keep on a default arg.

2018-03-05  Marek Polacek  <polacek@redhat.com>

	PR c++/84707
	* decl.c (duplicate_decls): Check DECL_NAME before accessing
	UDLIT_OPER_P.

2018-03-05  Nathan Sidwell  <nathan@acm.org>

	PR c++/84694
	* friend.c (do_friend): Restore check for identifier_p inside
	TEMPLATE_ID_EXPR.

2018-03-05  Paolo Carlini  <paolo.carlini@oracle.com>

	PR c++/84618
	* parser.c (cp_parser_lambda_introducer): Reject any capture not
	involving a VAR_DECL or a PARM_DECL.

2018-03-05  Pádraig Brady  <P@draigBrady.com>
	    Jason  Merrill  <jason@redhat.com>
	    Nathan Sidwell  <nathan@acm.org>

	PR c++/84497
	* decl2.c (get_tls_init_fn): Check TYPE_HAS_TRIVIAL_DFLT too.

2018-03-03  Jason Merrill  <jason@redhat.com>

	PR c++/84686 - missing volatile loads.
	* cvt.c (convert_to_void): Call maybe_undo_parenthesized_ref.

2018-03-03  Paolo Carlini  <paolo.carlini@oracle.com>

	PR c++/71464
	* optimize.c (maybe_thunk_body): Bail out immediately if either
	fns[0] or fns[1] is null.

2018-03-02  Marek Polacek  <polacek@redhat.com>

	PR c++/84578
	* constexpr.c (get_array_or_vector_nelts): New.
	(cxx_eval_array_reference): Use it.
	(cxx_eval_vec_init_1): Likewise.
	(cxx_eval_store_expression): Likewise.

2018-03-02  Jason Merrill  <jason@redhat.com>

	* semantics.c (force_paren_expr): Remove redundant test.

2018-03-02  Marek Polacek  <polacek@redhat.com>

	PR c++/84663
	* decl.c (cp_complete_array_type): Check error_mark_node.

	PR c++/84664
	* typeck.c (cp_perform_integral_promotions): Check the result of
	mark_rvalue_use.

2018-03-02  Jakub Jelinek  <jakub@redhat.com>

	PR c++/84662
	* pt.c (tsubst_copy_and_build) <case TEMPLATE_ID_EXPR>: Use
	RETURN instead of return.
	<case POINTER_PLUS_EXPR>: Likewise.
	<case CONVERT_EXPR>: If op0 is error_mark_node, just return
	it instead of wrapping it into CONVERT_EXPR.

2018-03-02  Jason Merrill  <jason@redhat.com>

	Fix MIPS16 ICE.
	* pt.c (type_dependent_expression_p): Check DECL_LANG_SPECIFIC.

2018-03-02  Marek Polacek  <polacek@redhat.com>

	PR c++/84590
	* cp-gimplify.c (cp_fully_fold): Unwrap TARGET_EXPR or a CONSTRUCTOR
	wrapped in VIEW_CONVERT_EXPR.

2018-03-01  Martin Sebor  <msebor@redhat.com>

	PR c++/84294
	* decl.c (check_redeclaration_no_default_args): Merge attributes
	specified on redeclarations of the same function template.
	Remove dead code.

2018-03-01  Marek Polacek  <polacek@redhat.com>
	    Jason Merrill  <jason@redhat.com>

	PR c++/84582
	* semantics.c (force_paren_expr): Create a PAREN_EXPR when in
	a template.
	(maybe_undo_parenthesized_ref): Unwrap PAREN_EXPR.
	* typeck2.c (store_init_value): Call fold_non_dependent_expr instead
	of instantiate_non_dependent_expr.
	* tree.c (lvalue_kind): Handle PAREN_EXPR like NON_DEPENDENT_EXPR.

2018-03-01  Nathan Sidwell  <nathan@acm.org>

	PR c++/84434
	* name-lookup.c (member_vec_dedup): Remove manually peeled
	iteration.  Ignore dependent ctor inheritance.

2018-03-01  Jason Merrill  <jason@redhat.com>

	PR c++/71569 - decltype of template.
	* parser.c (cp_parser_decltype_expr): Handle missing template args.

2018-03-01  Marek Polacek  <polacek@redhat.com>

	PR c++/84596
	* constexpr.c (require_rvalue_constant_expression): New function.
	* cp-tree.h: Declare it.
	* semantics.c (finish_static_assert): Use it instead of
	require_potential_rvalue_constant_expression.

2018-03-01  Jason Merrill  <jason@redhat.com>
	    Alexandre Oliva <aoliva@redhat.com>

	PR c++/71569 - ICE with redundant args on member variable template.
	* decl.c (start_decl): Handle partial specialization of member
	variable template.
	* pt.c (determine_specialization): Allow partial specialization
	of member variable template without specializing enclosing class.
	(process_partial_specialization): Improve error message.

2018-02-28  Jason Merrill  <jason@redhat.com>

	PR c++/71784 - ICE with ref-qualifier and explicit specialization.
	* pt.c (determine_specialization): Check ref-qualifier.

2018-02-28  Jakub Jelinek  <jakub@redhat.com>

	PR c++/84609
	* parser.c (cp_parser_attributes_opt): Formatting fix.
	(cp_parser_skip_balanced_tokens, cp_parser_skip_gnu_attributes_opt,
	cp_parser_skip_std_attribute_spec_seq, cp_parser_skip_attributes_opt):
	New functions.
	(cp_parser_member_declaration): Use cp_parser_skip_attributes_opt
	instead of tentative parse to peek over optional attribute tokens
	to check for CPP_COLON after them.

	PR c++/83871
	PR c++/83503
	* pt.c (INCLUDE_STRING): Remove define.
	(warn_spec_missing_attributes): Use pretty_printer instead of
	std::string.  Fix up inform call so that the list of attributes
	is in %s argument.

2018-02-28  Martin Sebor  <msebor@redhat.com>

	PR testsuite/84617
	* decl.c (duplicate_decls): Fully merge attributes const, pure,
	and malloc.

2018-02-28  Nathan Sidwell  <nathan@acm.org>

	PR c++/84602
	* name-lookup.h (search_anon_aggr): Add defaulted WANT_TYPE arg.
	* name-lookup.c (fields_linear_search): Look in an anon-aggr
	regardless of want_type.
	(search_anon_aggr): Just use get_class_binding_direct.

2018-02-28  Jakub Jelinek  <jakub@redhat.com>

	* decl.c (cp_finish_decomp): Don't adjust eltscnt when calling
	inform_n.

2018-02-27  Martin Sebor  <msebor@redhat.com>

	* pt.c: Avoid including <string> directly.

2018-02-27  Martin Sebor  <msebor@redhat.com>

	PR c++/83871
	PR c++/83503
	* cp-tree.h (warn_spec_missing_attributes): New function.
	((check_explicit_specialization): Add an argument.  Call the above
	function.
	* decl.c (duplicate_decls): Avoid applying primary function template's
	attributes to its explicit specializations.
	cp/pt.c (warn_spec_missing_attributes): Define.

2018-02-27  Håkon Sandsmark  <hsandsmark@gmail.com>

	PR c++/71546 - lambda init-capture with qualified-id.
	* parser.c (cp_parser_lambda_introducer): Clear scope after
	each lambda capture.

2018-02-27  Nathan Sidwell  <nathan@acm.org>

	PR c++/84426
	* name-lookup.h (get_member_slot): Rename ...
	(find_member_slot): ... here.
	(add_member_slot): New.
	* name-lookup.c (member_vec_linear_search): No need to check for
	NULL slot.
	(get_member_slot): Rename ...
	(find_member_slot): ... here.  Don't add slot for incomplete class.
	(add_member_slot): New.
	* class.c (add_method): Adjust get_member_slot rename.  Bail out
	if push_class_level_binding fails.  Create slot and grok
	properties once we're committed to insertion.

2018-02-27  Jason Merrill  <jason@redhat.com>

	PR c++/84489 - dependent default template argument
	* pt.c (type_unification_real): Handle early substitution failure.

2018-02-26  Jason Merrill  <jason@redhat.com>

	PR c++/84560 - ICE capturing multi-dimensional VLA.
	* tree.c (array_of_runtime_bound_p): False if the element is
	variably-modified.

	PR c++/84441 - ICE with base initialized from ?:
	* call.c (unsafe_copy_elision_p): Handle COND_EXPR.

	PR c++/84520 - ICE with generic lambda in NSDMI.
	* lambda.c (lambda_expr_this_capture): Don't look for fake NSDMI
	'this' in a generic lambda instantiation.

	PR c++/84559 - ICE with constexpr VLA.
	* constexpr.c (ensure_literal_type_for_constexpr_object): Check
	for constexpr variable with VLA type.

2018-02-26  Jakub Jelinek  <jakub@redhat.com>

	PR c++/84558
	* constexpr.c (cxx_eval_vec_init_1): For reuse, treat NULL eltinit like
	a valid constant initializer.  Formatting fixes.

2018-02-26  Paolo Carlini  <paolo.carlini@oracle.com>

	PR c++/84540
	* pt.c (tsubst_attributes): Handle correctly tsubst_attribute
	returning NULL_TREE.
	(apply_late_template_attributes): Likewise.

2018-02-26  Jakub Jelinek  <jakub@redhat.com>

	PR c++/84557
	* parser.c (cp_parser_omp_var_list_no_open): Only call
	cp_parser_lookup_name_simple on names satisfying identifier_p.
	(cp_parser_oacc_routine): Likewise.

2018-02-26  Jason Merrill  <jason@redhat.com>

	PR c++/84551 - ICE with concepts and -g.
	* parser.c (add_debug_begin_stmt): Do nothing in a concept.

2018-02-26  Marek Polacek  <polacek@redhat.com>

	PR c++/84325
	* tree.c (replace_placeholders_r): Only check TREE_CONSTANT on
	non-types.

2018-02-26  Jason Merrill  <jason@redhat.com>

	PR c++/84447 - ICE with deleted inherited ctor with default arg.
	* call.c (build_over_call): Handle deleted functions in one place.

2018-02-26  Paolo Carlini  <paolo.carlini@oracle.com>

	PR c++/84533
	* decl.c (redeclaration_error_message): Don't try to use
	DECL_DECLARED_CONSTEXPR_P on CONST_DECLs.

2018-02-26  Paolo Carlini  <paolo.carlini@oracle.com>

	* lambda.c (build_capture_proxy): Define static.
	* cp-tree.h (build_capture_proxy): Remove.

2018-02-26  Marek Polacek  <polacek@redhat.com>

	PR c++/84537
	* name-lookup.c (suggest_alternative_in_explicit_scope): Return false
	if name is error node.

2018-02-25  Jason Merrill  <jason@redhat.com>

	PR c++/84015 - ICE with class deduction and auto template parm.
	* pt.c (rewrite_template_parm): Use tf_partial in first tsubst.

2018-02-24  Marek Polacek  <polacek@redhat.com>

	PR c++/83692
	* constexpr.c (maybe_constant_init_1): New function.
	(maybe_constant_init): Make it a wrapper around maybe_constant_init_1.
	(cxx_constant_init): New function.
	* cp-tree.h (cxx_constant_init): Declare.
	* typeck2.c (store_init_value): Call cxx_constant_init instead of
	cxx_constant_value.  Move the maybe_constant_init call under an 'else'.

2018-02-22  Jason Merrill  <jason@redhat.com>

	PR c++/70468 - ICE with constructor delegation via typedef.
	* pt.c (tsubst_initializer_list): Check for other mem-initializers
	with constructor delegation.

2018-02-22  Jason Merrill  <jason@redhat.com>

	PR c++/84424 - ICE with constexpr and __builtin_shuffle.
	* constexpr.c (reduced_constant_expression_p): Handle CONSTRUCTOR of
	VECTOR_TYPE.

2018-02-22  Marek Polacek  <polacek@redhat.com>

	PR c++/84493
	* parser.c (cp_parser_braced_list): Use require_open instead of
	consume_open.

2018-02-21  Jason Merrill  <jason@redhat.com>

	PR c++/84454 - ICE with pack expansion in signature.
	* error.c (find_typenames_r): Also stop on EXPR_PACK_EXPANSION.

2018-02-20  Siddhesh Poyarekar  <siddhesh@sourceware.org>

	* cp-objcp-common.c (cxx_block_may_fallthru): Add case for
	IF_STMT.

2018-02-20  Paolo Carlini  <paolo.carlini@oracle.com>

	PR c++/84446
	* parser.c (cp_parser_init_declarator): Don't call start_lambda_scope
	on error_mark_node.

2018-02-20  Jakub Jelinek  <jakub@redhat.com>

	PR c++/84445
	* class.c (fixed_type_or_null) <case CALL_EXPR>: Only test
	TREE_HAS_CONSTRUCTOR if instance is not an internal function call.

	PR c++/84449
	* tree.c (bot_manip): If build_cplus_new or break_out_target_exprs
	returns error_mark_node, return it immediately.
	(break_out_target_exprs): If cp_walk_tree with bot_manip returns
	error_mark_node, return error_mark_node.

	PR c++/84455
	* pt.c (tsubst_lambda_expr): If not nested, increment temporarily
	function_depth to avoid GC during finish_lambda_function.

2018-02-19  Jason Merrill  <jason@redhat.com>

	PR c++/84429 - ICE capturing VLA.
	* lambda.c (build_capture_proxy): Handle reference refs.

2018-02-19  Jakub Jelinek  <jakub@redhat.com>

	PR c++/84448
	* parser.c (cp_parser_binary_expression): For no_toplevel_fold_p, if
	either operand is error_mark_node, set current.lhs to that instead of
	creating a binary op with error_mark_node operands.

	PR c++/84430
	* constexpr.c (potential_constant_expression_1): Handle OMP_SIMD.

2018-02-19  Paolo Carlini  <paolo.carlini@oracle.com>

	PR c++/84348
	* decl.c (grokdeclarator): Early return error_mark_node upon
	ill-formed friend declaration.

2018-02-16  Marek Polacek  <polacek@redhat.com>
	    Jakub Jelinek  <jakub@redhat.com>

	PR c++/84192
	* constexpr.c (cxx_eval_constant_expression) <case RETURN_EXPR>: Don't
	set *jump_target to anything if jump_target is NULL.

2018-02-16  Jason Merrill  <jason@redhat.com>

	PR c++/84151 - unnecessary volatile load with static member.
	* call.c (build_new_method_call_1): Avoid loading from a volatile
	lvalue used as the object argument for a static member function.

	PR c++/81853 - using-directive and constexpr.
	* constexpr.c (cxx_eval_constant_expression): Handle USING_STMT.

	PR c++/84420 - ICE with structured binding in lambda.
	* lambda.c (is_capture_proxy): Check DECL_DECOMPOSITION_P.

	PR c++/83835 - C++17 error with constructor ctors.
	* call.c (build_special_member_call): Set TARGET_EXPR_DIRECT_INIT_P.

	PR c++/82664 - ICE with reference to function template parm.
	* pt.c (convert_nontype_argument_function): Avoid obfuscationg
	NOP_EXPRs.

	PR c++/82764 - C++17 ICE with empty base
	* class.c (build_base_field_1): Set DECL_SIZE to zero for empty base.

2018-02-16  Jason Merrill  <jason@redhat.com>

	PR c++/84421 - type-dependent if constexpr
	* semantics.c (finish_if_stmt_cond): Check type_dependent_expression_p.

2018-02-16  Nathan Sidwell  <nathan@acm.org>

	Deprecate -ffriend-injection.
	* decl.c (cxx_init_decl_processing): Emit warning on option.
	* name-lookup.c (do_pushdecl): Emit warning if we push a visible
	friend.

2018-02-16  Paolo Carlini  <paolo.carlini@oracle.com>

	PR c++/82468
	* decl.c (check_special_function_return_type): Reject template
	template parameter in deduction guide.

2018-02-16  Nathan Sidwell  <nathan@acm.org>

	PR c++/84375
	* name-lookup.c (do_pushdecl): Bail out on bad local friend injection.

2018-02-15  Jason Merrill  <jason@redhat.com>

	PR c++/83227 - C++17 ICE with init-list derived-to-base conversion.
	* call.c (convert_like_real): Don't use the copy-list-initialization
	shortcut for ck_base.

	PR c++/84045 - ICE with typedef and noexcept.
	* except.c (build_noexcept_spec): Use strip_typedefs_expr.

	PR c++/84376 - ICE with omitted template arguments.
	* pt.c (dguide_name_p): Check for IDENTIFIER_NODE.

	PR c++/84368 - wrong error with local variable in variadic lambda.
	* pt.c (tsubst_pack_expansion): Fix handling of non-packs in
	local_specializations.

2018-02-15  Paolo Carlini  <paolo.carlini@oracle.com>

	PR c++/84330
	* constraint.cc (tsubst_constraint_info): Handle an error_mark_node
	as first argument.

2018-02-14  Paolo Carlini  <paolo.carlini@oracle.com>

	PR c++/84350
	* pt.c (do_auto_deduction): Don't check the TREE_TYPE of a null
	init, early return.

2018-02-14  Nathan Sidwell  <nathan@acm.org>

	* decl2.c (mark_vtable_entries): Set input_location to decl's.
	(c_parse_final_cleanups): Restore input_location after emitting
	vtables.

2018-02-14  Paolo Carlini  <paolo.carlini@oracle.com>

	* cp-tree.h (do_auto_deduction (tree, tree, tree)): Remove.
	(do_auto_deduction (tree, tree, tree, tsubst_flags_t,
	auto_deduction_context, tree, int): Add defaults.
	* pt.c (do_auto_deduction (tree, tree, tree)): Remove definition.
	(tsubst_omp_for_iterator): Adjust do_auto_deduction call, forward
	tsubst_flags_t argument.
	* init.c (build_new): Likewise.

2018-02-13  Jakub Jelinek  <jakub@redhat.com>

	PR c++/84364
	* typeck.c (check_return_expr): Don't emit -Weffc++ warning
	about return other than *this in assignment operators if
	retval is type dependent expression.

2018-02-13  Paolo Carlini  <paolo.carlini@oracle.com>

	PR c++/84333
	* call.c (build_conditional_expr_1): Use cp_save_expr instead of
	save_expr for the G++ extension.

2018-02-13  Jason Merrill  <jason@redhat.com>

	PR c++/84080 - ICE with return type deduction and specialization.
	* pt.c (determine_specialization): Check uses_template_parms.

	Fix more variadic capture issues.
	* pt.c (find_parameter_packs_r): Also look at explicit captures.
	(check_for_bare_parameter_packs): Check current_class_type for
	lambda context.
	(extract_locals_r): Handle seeing a full instantiation of a pack.
	(tsubst_pack_expansion): Likewise.  Force lambda capture.
	* parser.c (cp_parser_lambda_introducer): Don't
	check_for_bare_parameter_packs.

	PR c++/84338 - wrong variadic sizeof.
	* pt.c (argument_pack_select_arg): Like the macro, but look through
	a pack expansion.
	(tsubst, tsubst_copy, dependent_template_arg_p): Use it.
	(extract_fnparm_pack): Do make_pack_expansion.
	(extract_locals_r): Do strip a pack expansion.
	* cp-tree.h (ARGUMENT_PACK_SELECT_ARG): Remove.

2018-02-12  Jakub Jelinek  <jakub@redhat.com>

	PR c++/84341
	* parser.c (cp_parser_binary_expression): Use build_min instead of
	build2_loc to build the no_toplevel_fold_p toplevel binary expression.

2018-02-12  Nathan Sidwell  <nathan@acm.org>

	PR c++/84263
	* parser.c (cp_parser_decltype): Push and pop
	deferring_access_checks.  Reorganize to avoid goto.

2018-02-12  Richard Biener  <rguenther@suse.de>

	PR c++/84281
	* constexpr.c (cxx_eval_vec_init_1): Use a RANGE_EXPR to compact
	uniform constructors and delay allocating them fully.

2018-02-09  Jason Merrill  <jason@redhat.com>

	PR c++/84036 - ICE with variadic capture.
	Handle variadic capture proxies more like non-variadic.
	* lambda.c (build_capture_proxy): Remove workaround.
	* pt.c (find_parameter_packs_r): The proxy is a pack.
	(instantiate_class_template_1): Remove dead lambda code.
	(extract_fnparm_pack): Don't make_pack_expansion.
	(extract_locals_r): Don't strip a pack expansion.
	(tsubst_pack_expansion): Handle proxy packs.  Use
	PACK_EXPANSION_EXTRA_ARGS less.
	(tsubst_decl) [FIELD_DECL]: Don't register_specialization.
	(tsubst_copy) [FIELD_DECL]: Don't retrieve*_specialization.
	[VAR_DECL]: Handle ARGUMENT_PACK_SELECT.
	(tsubst_expr) [DECL_EXPR]: Handle proxy packs.
	(tsubst_copy_and_build) [VAR_DECL]: Handle proxy packs normally.

2018-02-10  Jakub Jelinek  <jakub@redhat.com>

	PR sanitizer/83987
	* tree.c (cp_free_lang_data): Revert 2018-01-23 change.

2018-02-09  Jason Merrill  <jason@redhat.com>

	PR c++/81917 - ICE with void_t and partial specialization.
	* pt.c (instantiate_class_template_1): Set TYPE_BEING_DEFINED before
	calling most_specialized_partial_spec.

2018-02-09  Nathan Sidwell  <nathan@acm.org>

	PR c/84293
	* typeck.c (cp_build_indirect_ref_1, build_reinterpret_cast_1):
	Pass expr location to strict_aliasing_warning.

2018-02-09  Jason Merrill  <jason@redhat.com>

	PR c++/84296 - ICE with qualified-id in template.
	PR c++/83714
	* pt.c (unknown_base_ref_p): New.
	(instantiation_dependent_scope_ref_p): Use it instead of
	any_dependent_bases_p.

2018-02-09  Marek Polacek  <polacek@redhat.com>
	    Jakub Jelinek  <jakub@redhat.com>

	PR c++/83659
	* constexpr.c (cxx_fold_indirect_ref): Sync some changes from
	fold_indirect_ref_1, including poly_*int64.  Verify first that
	tree_fits_poly_int64_p (op01).  Formatting fixes.

2018-02-08  Paolo Carlini  <paolo.carlini@oracle.com>

	* constexpr.c (cxx_eval_component_reference): Use INDIRECT_REF_P.
	* lambda.c (build_capture_proxy): Likewise.
	* search.c (field_access_p): Likewise.
	* semantics.c (omp_clause_decl, omp_privatize_field,
	finish_omp_clauses): Likewise.

2018-02-08  Paolo Carlini  <paolo.carlini@oracle.com>

	PR c++/83806
	* typeck.c (decay_conversion): Use mark_rvalue_use for the special
	case of nullptr too.

2018-02-08  Nathan Sidwell  <nathan@acm.org>

	* class.c (finish_struct): Fix std:initializer_list diagnostic
	formatting.

2018-02-08  Paolo Carlini  <paolo.carlini@oracle.com>

	PR c++/83204
	* pt.c (tsubst_copy_and_build): Use force_paren_expr for INDIRECT_REF.

2018-02-07  Jakub Jelinek  <jakub@redhat.com>

	PR c++/84082
	* parser.c (cp_parser_dot_deref_incomplete): New function.
	(cp_parser_postfix_dot_deref_expression): Use it.

2018-02-07  David Malcolm  <dmalcolm@redhat.com>

	PR c++/81610
	PR c++/80567
	* name-lookup.c (suggest_rid_p): New function.
	(lookup_name_fuzzy): Replace enum-rid-filtering logic with call to
	suggest_rid_p.

2018-02-07  Jason Merrill  <jason@redhat.com>

	PR c++/84182 - ICE with captured lambda
	PR c++/84181
	* pt.c (extract_locals_r, extract_local_specs): New.
	(tsubst_pack_expansion): Use them.

2018-02-07  Martin Liska  <mliska@suse.cz>

	PR c++/84059.
	* class.c (add_method): Append argument value.
	* cp-tree.h (maybe_version_functions): Add new argument.
	* decl.c (decls_match): Call it if a declaration does not
	have DECL_FUNCTION_VERSIONED.
	(maybe_version_functions): record argument is added.

2018-02-05  Marek Polacek  <polacek@redhat.com>

	* class.c: Remove unused global variables.
	(build_primary_vtable): Don't gather statistics.
	(print_class_statistics): Remove.
	* cp-tree.h (print_class_statistics): Remove.
	* tree.c (cxx_print_statistics): Don't call print_class_statistics.

2018-02-02  Paolo Carlini  <paolo.carlini@oracle.com>

	* class.c (is_really_empty_class): Use DECL_UNNAMED_BIT_FIELD.
	* constexpr.c (cx_check_missing_mem_inits): Likewise.
	* decl.c (next_initializable_field, find_decomp_class_base,
	cp_finish_decomp): Likewise.
	* typeck2.c (process_init_constructor_record): Likewise.

2018-02-02  Jason Merrill  <jason@redhat.com>

	PR c++/84181 - ICE with lambda parm in template argument.
	* tree.c (strip_typedefs_expr): Use cp_tree_operand_length.

2018-02-01  Jason Merrill  <jason@redhat.com>

	PR c++/84160 - ICE with nested variadic capture.
	* lambda.c (is_capture_proxy_with_ref): New.
	(insert_capture_proxy): Don't set DECL_CAPTURED_VARIABLE from a
	COMPONENT_REF.
	* expr.c (mark_use): Use is_capture_proxy_with_ref.
	* constexpr.c (potential_constant_expression_1): Likewise.
	* semantics.c (process_outer_var_ref): Likewise.

2018-02-01  Marek Polacek  <polacek@redhat.com>

	PR c++/84125
	* typeck.c (build_address): Relax the assert when
	processing_template_decl.

2018-02-01  Jason Merrill  <jason@redhat.com>

	PR c++/84126 - ICE with variadic generic lambda
	PR c++/84036
	PR c++/82249
	* pt.c (tsubst_pack_expansion): Handle function parameter_packs in
	PACK_EXPANSION_EXTRA_ARGS.

2018-02-01  Paolo Carlini  <paolo.carlini@oracle.com>

	PR c++/83796
	* call.c (convert_like_real): If w're initializing from {} explicitly
	call abstract_virtuals_error_sfinae.

2018-01-31  Jason Merrill  <jason@redhat.com>
	    Jakub Jelinek  <jakub@redhat.com>

	PR c++/83993
	* constexpr.c (cxx_eval_outermost_constant_expr): Build NOP_EXPR
	around non-constant ADDR_EXPRs rather than clearing TREE_CONSTANT
	on ADDR_EXPR.

2018-01-31  Jakub Jelinek  <jakub@redhat.com>

	PR c++/83993
	* constexpr.c (diag_array_subscript): Emit different diagnostics
	if TYPE_DOMAIN (arraytype) is NULL.
	(cxx_eval_array_reference, cxx_eval_store_expression): For arrays
	with NULL TYPE_DOMAIN use size_zero_node as nelts.

2018-01-31  Paolo Carlini  <paolo.carlini@oracle.com>

	PR c++/84092
	* semantics.c (finish_qualified_id_expr): When handling an
	UNBOUND_CLASS_TEMPLATE only adjust qualifying_class and expr.

2018-01-31  Marek Polacek  <polacek@redhat.com>

	PR c++/84138
	* cp-gimplify.c (cp_fold): Check if X is an error node before
	calling useless_type_conversion_p.

2018-01-30  Jason Merrill  <jason@redhat.com>

	PR c++/84091 - ICE with local class in lambda in template.
	* decl2.c (determine_visibility): Look for outer containing template
	instantiation.

	PR c++/84098 - ICE with lambda in template NSDMI.
	* pt.c (instantiate_class_template_1): Ignore more lambdas.

2018-01-29  Jason Merrill  <jason@redhat.com>

	PR c++/68810 - wrong location for reinterpret_cast error.
	* cvt.c (cp_convert_to_pointer): Always build a CONVERT_EXPR when
	!dofold.

2018-01-29  Marek Polacek  <polacek@redhat.com>

	PR c++/83996
	* constexpr.c (cxx_fold_indirect_ref): Compute ((foo *)&fooarray)[1]
	=> fooarray[1] in offset_int.

2018-01-29  Jason Merrill  <jason@redhat.com>

	PR c++/83942 - wrong unused warning with static_cast.
	* cvt.c (ocp_convert): Call mark_rvalue_use.

2018-01-26  Jason Merrill  <jason@redhat.com>

	PR c++/83956 - wrong dtor error with anonymous union
	* method.c (walk_field_subobs): Variant members only affect
	deletedness.
	(maybe_explain_implicit_delete): Pass &deleted_p for diagnostic.

	PR c++/84036 - ICE with variadic capture.
	PR c++/82249
	* pt.c (tsubst_pack_expansion): When optimizing a simple
	substitution, pull a single pack expansion out of its pack.

	PR c++/82514 - ICE with local class in generic lambda.
	* pt.c (regenerated_lambda_fn_p): Remove.
	(enclosing_instantiation_of): Don't use it.
	(tsubst_function_decl): Call enclosing_instantiation_of.

	* pt.c (lookup_template_class_1): Add sanity check.
	* name-lookup.c (do_pushtag): Don't add closures to local_classes.

2018-01-25  Jakub Jelinek  <jakub@redhat.com>

	PR c++/84031
	* decl.c (find_decomp_class_base): Ignore unnamed bitfields.  Ignore
	recursive calls that return ret.
	(cp_finish_decomp): Ignore unnamed bitfields.

2018-01-23  Jason Merrill  <jason@redhat.com>

	PR c++/82249 - wrong mismatched pack length error.
	* pt.c (extract_fnparm_pack, tsubst_pack_expansion): Handle
	unsubstituted function parameter pack.

2018-01-23  Paolo Carlini  <paolo.carlini@oracle.com>

	PR c++/83921
	* decl.c (check_for_uninitialized_const_var): Not static; add
	bool and tsubst_flags_t parameters; adjust to be used both in
	constexpr context and not.
	* constexpr.c (potential_constant_expression_1): Use the above.
	* cp-tree.h (check_for_uninitialized_const_var): Declare.

2018-01-23  Jason Merrill  <jason@redhat.com>

	PR c++/83947 - ICE with auto declarations.
	* pt.c (do_auto_deduction): Don't deduce from an auto decl.
	* decl.c (undeduced_auto_decl): Limit to vars and fns.

2018-01-23  David Malcolm  <dmalcolm@redhat.com>

	PR c++/83974
	* pt.c (tsubst_copy_and_build) <CONSTRUCTOR>: Remove early bailout
	for pointer to member function types.

2018-01-23  Jakub Jelinek  <jakub@redhat.com>

	PR sanitizer/83987
	* tree.c (cp_free_lang_data): Change DECL_VALUE_EXPR of
	DECL_OMP_PRIVATIZED_MEMBER vars to error_mark_node.

2018-01-23  Nathan Sidwell  <nathan@acm.org>

	PR c++/83988
	* pt.c (tsubst_baselink): Remove optype assert.
	* ptree.c (cxx_print_xnode): <case BASELINK> Print BASELINK_OPTYPE.

2018-01-23  Jakub Jelinek  <jakub@redhat.com>

	PR c++/83958
	* decl.c (cp_finish_decomp): Diagnose if reference structure binding
	refers to incomplete type.

2018-01-23  Nathan Sidwell  <nathan@acm.org>

	Deprecate ARM-era for scope handling
	* decl.c (poplevel): Flag_new_for_scope is a boolean-like.
	(cxx_init_decl_processing): Deprecate flag_new_for_scope being
	cleared.
	* name-lookup.c (check_for_out_of_scope_variable): Deprecate and
	cleanup handling.
	* semantics.c (begin_for_scope): Flag_new_for_scope is
	boolean-like.
	(finish_for_stmt, begin_range_for_stmt): Likewise.

2018-01-22  Jason Merrill  <jason@redhat.com>

	PR c++/83720
	* decl2.c (determine_visibility): Fix template_decl handling
	instead of blocking it.

	PR c++/83720 - ICE with lambda and LTO.
	* decl2.c (determine_visibility): Clear template_decl for
	function-scope decls.  Propagate anonymous linkage from containing
	function.

2018-01-22  Marek Polacek  <polacek@redhat.com>

	PR c++/81933
	* typeck2.c (split_nonconstant_init_1): Return false if we didn't
	split out anything.

2018-01-22  Ville Voutilainen  <ville.voutilainen@gmail.com>

	PR c++/83895
	* decl.c (grokdeclarator): Don't diagnose extra parens
	on typedefs.

2018-01-19  Jakub Jelinek  <jakub@redhat.com>

	PR c++/81167
	* call.c (joust): Use TREE_TYPE (source) if source is
	a POINTER_TYPE_P rather than if ! DECL_CONSTRUCTOR_P (w->fn).

	PR c++/83919
	* typeck.c (convert_for_assignment): Suppress warn_ignored_qualifiers
	for direct enum init.
	* decl.c (reshape_init): Likewise.

2018-01-19  Marek Polacek  <polacek@redhat.com>

	* constexpr.c (fold_simple): Simplify.

2018-01-18  Jason Merrill  <jason@redhat.com>

	PR c++/83714
	* search.c (any_dependent_bases_p): Handle null TREE_BINFO.
	* pt.c (instantiation_dependent_scope_ref_p): True if
	any_dependent_bases_p.

2018-01-18  Paolo Carlini  <paolo.carlini@oracle.com>

	* cp-tree.h: Fix comment typo (DECL_NON_TRIVIALLY_INITIALIZED_P
	vs DECL_NONTRIVIALLY_INITIALIZED_P).

2018-01-18  Jason Merrill  <jason@redhat.com>

	PR c++/82461 - constexpr list-initialized member
	* constexpr.c (potential_constant_expression_1): Check
	TARGET_EXPR_DIRECT_INIT_P.

2018-01-18  Paolo Carlini  <paolo.carlini@oracle.com>

	PR c++/81013
	* decl.c (xref_basetypes): Early return upon error about derived
	union.

2018-01-18  Nathan Sidwell  <nathan@acm.org>

	PR c++/83160
	* cp-tree.h (mark_use): Declare.
	* expr.c (mark_use): Make extern.
	* call.c (direct_reference_binding): Set inner conv's
	rvaluedness_matches_p, if it is an identity.
	(convert_like_real): Mark lvalue or rvalue use for identity as
	rvaledness_matches_p demands.

2018-01-18  Jakub Jelinek  <jakub@redhat.com>

	PR c++/83824
	* parser.c (attr_chainon): New function.
	(cp_parser_label_for_labeled_statement, cp_parser_decl_specifier_seq,
	cp_parser_namespace_definition, cp_parser_init_declarator,
	cp_parser_type_specifier_seq, cp_parser_parameter_declaration,
	cp_parser_gnu_attributes_opt): Use it.
	(cp_parser_member_declaration, cp_parser_objc_class_ivars,
	cp_parser_objc_struct_declaration): Likewise.  Don't reset
	prefix_attributes if attributes is error_mark_node.

2018-01-17  Paolo Carlini  <paolo.carlini@oracle.com>

	PR c++/78344
	* decl.c (grokdeclarator): Do not append the error_mark_node
	due to an erroneous optional attribute-specifier-seq.

2018-01-17  Jakub Jelinek  <jakub@redhat.com>

	PR c++/83897
	* cp-gimplify.c (cp_maybe_instrument_return): Handle
	CLEANUP_POINT_EXPR.

2018-01-17  Paolo Carlini  <paolo.carlini@oracle.com>

	PR c++/81054
	* constexpr.c (ensure_literal_type_for_constexpr_object): Return
	error_mark_node when we give an error.
	* decl.c (cp_finish_decl): Use the latter.

2018-01-17  Nathan Sidwell  <nathan@acm.org>

	PR c++/83287
	* init.c (build_raw_new_expr): Scan list for lookups to keep.

2018-01-17  David Malcolm  <dmalcolm@redhat.com>

	PR c++/83814
	* expr.c (fold_for_warn): Move from c-common.c, reducing to just
	the C++ part.  If processing a template, call
	fold_non_dependent_expr rather than fully folding.

2018-01-17  Jason Merrill  <jason@redhat.com>

	PR c++/81067 - redundant NULL warning.
	* call.c (convert_like_real): Restore null_node handling.

2018-01-17  Jason Merrill  <jason@redhat.com>

	PR c++/81843 - ICE with variadic member template.
	PR c++/72801
	* pt.c (unify_pack_expansion): Don't try to deduce enclosing
	template args.

2018-01-17  David Malcolm  <dmalcolm@redhat.com>

	PR c++/83799
	* pt.c (type_dependent_expression_p): Strip any location wrapper
	before testing tree codes.
	(selftest::test_type_dependent_expression_p): New function.
	(selftest::cp_pt_c_tests): Call it.

2018-01-17  Nathan Sidwell  <nathan@acm.org>

	PR c++/83739
	* pt.c (tsubst_expr) <case RANGE_FOR_STMT>: Rebuild a range_for if
	this not a final instantiation.

2018-01-16  Jason Merrill  <jason@redhat.com>

	PR c++/83714 - ICE checking return in template.
	* typeck.c (check_return_expr): Call build_non_dependent_expr.

2018-01-16  Jakub Jelinek  <jakub@redhat.com>

	PR c++/83817
	* pt.c (tsubst_copy_and_build) <case CALL_EXPR>: If function
	is AGGR_INIT_EXPR rather than CALL_EXPR, set AGGR_INIT_FROM_THUNK_P
	instead of CALL_FROM_THUNK_P.

	PR c++/83825
	* name-lookup.c (member_vec_dedup): Return early if len is 0.
	(resort_type_member_vec, set_class_bindings,
	insert_late_enum_def_bindings): Use vec qsort method instead of
	calling qsort directly.

2018-01-15  Martin Sebor  <msebor@redhat.com>

	PR c++/83588
	* class.c (find_flexarrays): Make a record of multiple flexible array
	members.

2018-01-12  Jason Merrill  <jason@redhat.com>

	PR c++/83186 - ICE with static_cast of list-initialized temporary.
	* typeck.c (build_static_cast): Use build_non_dependent_expr.

2018-01-12  Nathan Sidwell  <nathan@acm.org>

	* cp-tree.h (mark_rvalue_use): Add parm name.
	* expr.c (mark_lvalue_use, mark_lvalue_use_nonread): Move next to
	mark_rvalue_use.
	* call.c (convert_like_real): Fix formatting.

2018-01-11  Jason Merrill  <jason@redhat.com>

	PR c++/82728 - wrong -Wunused-but-set-variable
	PR c++/82799
	PR c++/83690
	* call.c (perform_implicit_conversion_flags): Call mark_rvalue_use.
	* decl.c (case_conversion): Likewise.
	* semantics.c (finish_static_assert): Call
	perform_implicit_conversion_flags.

2018-01-11  Nathan Sidwell  <nathan@acm.org>

	* method.c (enum mangling_flags): Delete long-dead enum.

2018-01-10  Paolo Carlini  <paolo.carlini@oracle.com>

	* parser.c (cp_parser_std_attribute_spec): When
        token_pair::require_open / require_close return false simply
	return error_mark_node, avoid duplicate cp_parser_error about
	expected '(' / ')', respectively.

2018-01-10  David Malcolm  <dmalcolm@redhat.com>

	PR c++/43486
	* call.c (null_ptr_cst_p): Strip location wrappers when
	converting from '0' to a pointer type in C++11 onwards.
	(conversion_null_warnings): Replace comparison with null_node with
	call to null_node_p.
	(build_over_call): Likewise.
	* cp-gimplify.c (cp_fold): Remove the early bailout when
	processing_template_decl.
	* cp-lang.c (selftest::run_cp_tests): Call
	selftest::cp_pt_c_tests and selftest::cp_tree_c_tests.
	* cp-tree.h (cp_expr::maybe_add_location_wrapper): New method.
	(selftest::run_cp_tests): Move decl to bottom of file.
	(null_node_p): New inline function.
	(selftest::cp_pt_c_tests): New decl.
	(selftest::cp_tree_c_tests): New decl.
	* cvt.c (build_expr_type_conversion): Replace comparison with
	null_node with call to null_node_p.
	* error.c (args_to_string): Likewise.
	* except.c (build_throw): Likewise.
	* mangle.c (write_expression): Skip location wrapper nodes.
	* parser.c (literal_integer_zerop): New function.
	(cp_parser_postfix_expression): Call maybe_add_location_wrapper on
	the result for RID_TYPEID. Pass true for new "wrap_locations_p"
	param of cp_parser_parenthesized_expression_list.  When calling
	warn_for_memset, replace integer_zerop calls with
	literal_integer_zerop, eliminating the double logical negation
	cast to bool.  Eliminate the special-casing for CONST_DECL in
	favor of the fold_for_warn within warn_for_memset.
	(cp_parser_parenthesized_expression_list): Add "wrap_locations_p"
	param, defaulting to false.  Convert "expr" to a cp_expr, and call
	maybe_add_location_wrapper on it when wrap_locations_p is true.
	(cp_parser_unary_expression): Call maybe_add_location_wrapper on
	the result for RID_ALIGNOF and RID_SIZEOF.
	(cp_parser_builtin_offsetof): Likewise.
	* pt.c: Include "selftest.h".
	(tsubst_copy): Handle location wrappers.
	(tsubst_copy_and_build): Likewise.
	(build_non_dependent_expr): Likewise.
	(selftest::test_build_non_dependent_expr): New function.
	(selftest::cp_pt_c_tests): New function.
	* tree.c: Include "selftest.h".
	(lvalue_kind): Handle VIEW_CONVERT_EXPR location wrapper nodes.
	(selftest::test_lvalue_kind): New function.
	(selftest::cp_tree_c_tests): New function.
	* typeck.c (string_conv_p): Strip any location wrapper from "exp".
	(cp_build_binary_op): Replace comparison with null_node with call
	to null_node_p.
	(build_address): Use location of operand when building address
	expression.

2018-01-10  Marek Polacek  <polacek@redhat.com>

	PR c++/82541
	* call.c (build_conditional_expr_1): Check complain before warning.
	* pt.c (tsubst_copy_and_build) <case COND_EXPR>: Suppress
	-Wduplicated-branches.

2018-01-10  Jakub Jelinek  <jakub@redhat.com>

	PR c++/81327
	* call.c (maybe_warn_class_memaccess): Add forward declaration.
	Change last argument from tree * to const vec<tree, va_gc> *, adjust
	args uses and check number of operands too.  Don't strip away any
	nops.  Use maybe_constant_value when looking for INTEGER_CST args.
	Deal with src argument not having pointer type.  Check
	tree_fits_uhwi_p before calling tree_to_uhwi.  Remove useless
	test.
	(build_over_call): Call maybe_warn_class_memaccess here on the
	original arguments.
	(build_cxx_call): Rather than here on converted arguments.

2018-01-10  Paolo Carlini  <paolo.carlini@oracle.com>

	PR c++/81055
	* init.c (build_vec_init): Avoid building an INIT_EXPR with
	error_mark_node as second argument.

2018-01-09  Jakub Jelinek  <jakub@redhat.com>

	PR c++/83734
	* constexpr.c (cxx_eval_statement_list): Ignore DEBUG_BEGIN_STMTs
	in STATEMENT_LIST.  Remove unneeded assert.

2018-01-03  Richard Sandiford  <richard.sandiford@linaro.org>
	    Alan Hayward  <alan.hayward@arm.com>
	    David Sherwood  <david.sherwood@arm.com>

	* constexpr.c (cxx_eval_array_reference): Handle polynomial
	VECTOR_CST_NELTS.
	(cxx_fold_indirect_ref): Handle polynomial TYPE_VECTOR_SUBPARTS.
	* call.c (build_conditional_expr_1): Likewise.
	* decl.c (cp_finish_decomp): Likewise.
	* mangle.c (write_type): Likewise.
	* typeck.c (structural_comptypes): Likewise.
	(cp_build_binary_op): Likewise.
	* typeck2.c (process_init_constructor_array): Likewise.

2018-01-03  Jakub Jelinek  <jakub@redhat.com>

	PR c++/83555
	* typeck.c (build_static_cast_1): For static casts to reference types,
	call build_base_path with flag_delete_null_pointer_checks as nonnull
	instead of always false.  When -fsanitize=null, call
	ubsan_maybe_instrument_reference on the NULL reference INTEGER_CST.
	* cp-gimplify.c (cp_genericize_r): Don't walk subtrees of UBSAN_NULL
	call if the first argument is INTEGER_CST with REFERENCE_TYPE.

2018-01-03  Nathan Sidwell  <nathan@acm.org>

	PR c++/83667
	* method.c (make_alias_for): Copy DECL_CONTEXT.

2018-01-03  Marek Polacek  <polacek@redhat.com>

	PR c++/83592
	* decl.c (grokdeclarator): Don't warn about MVP in typename context.

2018-01-03  Jakub Jelinek  <jakub@redhat.com>

	PR preprocessor/83602
	* name-lookup.c (lookup_name_fuzzy): Don't use macro_use_before_def
	for builtin macros.

	PR c++/83634
	* cp-gimplify.c (cp_fold) <case NOP_EXPR>: If the operand folds to
	error_mark_node, return error_mark_node.

	Update copyright years.

2018-01-02  Jakub Jelinek  <jakub@redhat.com>

	PR c++/83556
	* tree.c (replace_placeholders_r): Pass NULL as last argument to
	cp_walk_tree instead of d->pset.  If non-TREE_CONSTANT and
	non-PLACEHOLDER_EXPR tree has been seen already, set *walk_subtrees
	to false and return.
	(replace_placeholders): Pass NULL instead of &pset as last argument
	to cp_walk_tree.

2018-01-02  Nathan Sidwell  <nathan@acm.org>

	* constexpr.c (cxx_bind_parameters_in_call): Remove unneeded local
	lval var.

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