blob: a7a9cc92c9842bffece72e66f614d360db3a5fcd [file]
2026-05-12 Jason Merrill <jason@redhat.com>
PR c++/100903
* call.cc (build_over_call): Avoid -Wzero-as-null-pointer-constant
if the warning is disabled around the called function.
2026-05-12 Marek Polacek <polacek@redhat.com>
PR c++/50479
PR c++/62244
* parser.cc (cp_parser_parameter_declaration_list): Move the
grokdeclarator call and setting DECL_SOURCE_LOCATION to...
(cp_parser_parameter_declaration): ...here. New tree parameter.
Set it. Call pushdecl for a named decl with a default argument.
2026-05-12 Marek Polacek <polacek@redhat.com>
PR c++/125208
* reflect.cc (compare_reflections): Use == when comparing two
aliases.
* tree.cc (cp_tree_equal) <case REFLECT_EXPR>: Use
compare_reflections.
2026-05-11 Jason Merrill <jason@redhat.com>
* reflect.cc (null_reflection_p): New.
(splice): Use it.
* error.cc (dump_expr): Use it.
* cp-tree.h (null_reflection_p): Declare.
2026-05-11 Marek Polacek <polacek@redhat.com>
* decl2.cc (decl_defined_p): Also return true if DECL_INITIAL
and !DECL_IN_AGGR_P is true for a VAR_DECL.
2026-05-09 Patrick Palka <ppalka@redhat.com>
PR c++/121500
* cp-gimplify.cc (cp_genericize_r): Unconditionally walk
DECL_VALUE_EXPR.
2026-05-08 Marek Polacek <polacek@redhat.com>
PR c++/115181
PR c++/125043
PR c++/124979
* pt.cc (invalid_tparm_referent_p): Allow DECL_IGNORED_P in an
assert.
2026-05-07 Marek Polacek <polacek@redhat.com>
PR c++/124770
* decl.cc (wrapup_namespace_globals): Give the odr-used
inline variable error only when !DECL_INITIAL.
2026-05-07 Marek Polacek <polacek@redhat.com>
PR c++/125206
* tree.cc (strip_typedefs_expr) <case REFLECT_EXPR>: Always
return instead of recursing.
2026-05-07 Jakub Jelinek <jakub@redhat.com>
PR c++/125007
* cp-tree.h (maybe_update_function_parm): Declare.
* reflect.cc (maybe_update_function_parm): No longer static.
* error.cc (dump_expr) <case REFLECT_EXPR>: Improve printing
of various reflections.
2026-05-07 Jakub Jelinek <jakub@redhat.com>
PR c++/125184
* reflect.cc (check_out_of_consteval_use_r): Don't walk children of
USING_STMTs.
2026-05-07 Jakub Jelinek <jakub@redhat.com>
PR c++/124347
* constexpr.cc (cxx_eval_builtin_function_call): For
mce_true strip nops in first argument of BUILT_IN*_OBJECT_SIZE
if the inner expression is ADDR_EXPR.
2026-05-07 Jakub Jelinek <jakub@redhat.com>
PR c++/125111
* reflect.cc (extract_ref): Throw instead of trying to build
arrays of functions, methods or arrays with NULL TYPE_DOMAIN.
2026-05-07 Jakub Jelinek <jakub@redhat.com>
PR c++/124991
* cp-tree.h (struct lang_type): Document typeinfo_var member.
(get_classtype_typeinfo_var): New inline function.
(CLASSTYPE_TYPEINFO_VAR): Use it.
(set_classtype_typeinfo_var): New inline function.
(SET_CLASSTYPE_TYPEINFO_VAR): Define.
(get_anon_aggr_type_field): New inline function.
(ANON_AGGR_TYPE_FIELD): Use it.
(set_anon_aggr_type_field): New inline function.
(SET_ANON_AGGR_TYPE_FIELD): Define.
* decl.cc (fixup_anonymous_aggr): Use SET_ANON_AGGR_TYPE_FIELD
instead of ANON_AGGR_TYPE_FIELD.
* module.cc (trees_in::read_class_def): Use
SET_CLASSTYPE_TYPEINFO_VAR instead of setting
CLASSTYPE_TYPEINFO_VAR and do it even for ANON_AGGR_TYPE_P
types. Use SET_ANON_AGGR_TYPE_FIELD instead of setting
ANON_AGGR_TYPE_FIELD.
* rtti.cc (get_tinfo_decl_direct): Use SET_CLASSTYPE_TYPEINFO_VAR
instead of setting CLASSTYPE_TYPEINFO_VAR.
* semantics.cc (finish_member_declaration): Use
SET_ANON_AGGR_TYPE_FIELD instead of setting ANON_AGGR_TYPE_FIELD.
2026-05-06 Patrick Palka <ppalka@redhat.com>
PR c++/125179
* reflect.cc: (consteval_only_type_r): Remove this cp_walk_tree
callback and replace with ...
(consteval_only_walker): ... this recursive memoized
implementation.
(consteval_only_p): Define in terms of consteval_only_walker.
2026-05-05 Patrick Palka <ppalka@redhat.com>
PR c++/124957
* class.cc (check_tag): Set ABI_TAG_INHERITED on the TREE_LIST
of an inherited tag. Adjust after ABI_TAG_IMPLICIT renaming.
* cp-tree.h (ABI_TAG_IMPLICIT): Rename to ...
(ABI_TAG_NOT_MANGLED): ... this.
(equal_abi_tags): Adjust forward declaration.
* mangle.cc (write_unqualified_name): Adjust equal_abi_tags call.
(sorted_abi_tags): New ignore_inherited_p parameter, for ignoring
ABI_TAG_INHERITED tags. Adjust after ABI_TAG_INHERITED renaming.
(write_abi_tags): Adjust sorted_abi_tags call.
(equal_abi_tags): New ignore_inherited_p parameter. Pass it to
sorted_abi_tags.
* module.cc (trees_in::check_abi_tags): Pass
ignore_inherited_p=true to equal_abi_tags iff there's a
mangled-ness mismatch.
2026-05-05 Rainer Orth <ro@CeBiTec.Uni-Bielefeld.DE>
* module.cc (elf_out::create_mapping) [MAPPED_WRITING]
(elf_out::create_mapping) [HAVE_POSIX_FALLOCATE]: Allow for
ENOTSUP return from posix_fallocate.
2026-05-04 Andrew Pinski <andrew.pinski@oss.qualcomm.com>
PR c++/65271
* parser.cc (cp_parser_class_specifier): Accept &&.
2026-05-04 yxj-github-437 <2457369732@qq.com>
* constexpr.cc (cxx_eval_constant_expression): Do not cache
result with contract violation.
2026-05-04 chzn@mail.ustc.edu.cn <chzn@mail.ustc.edu.cn>
PR c++/124241
* search.cc (accessible_p): Call type_context_for_name_lookup
for otype if it's anonymous union.
2026-05-03 Andrew Pinski <andrew.pinski@oss.qualcomm.com>
PR c++/119567
* error.cc (dump_expr): Treat EXACT_DIV_EXPR the same as FLOOR_DIV_EXPR.
2026-05-01 Patrick Palka <ppalka@redhat.com>
PR c++/125115
* module.cc (trees_in::is_matching_decl): Turn e_type into a
reference and use it instead of TREE_TYPE (e_inner). Always
use build_exception_variant to propagate an already-instantiated
noexcept.
2026-05-01 Marek Polacek <polacek@redhat.com>
PR c++/125096
* pt.cc (tsubst_splice_scope): Don't return early for
dependent_splice_p. Propagate cv-qualifiers from the
SPLICE_SCOPE to the result.
* reflect.cc (valid_splice_scope_p): Accept SPLICE_SCOPE.
2026-04-29 Patrick Palka <ppalka@redhat.com>
PR c++/125035
* module.cc (merge_key): Add iobj_p and xobj_p bits.
(trees_out::key_mergeable) <case MK_named>: Set and stream
merge_key's iobj_p and xobj_p bits.
(check_mergeable_decl) <case FUNCTION_DECL>: Compare merge_key's
iobj_p and xobj_p bits with that of the given function.
(trees_in::key_mergeable): Stream merge_key's iobj_p and xobj_p
bits.
2026-04-29 Patrick Palka <ppalka@redhat.com>
PR c++/124582
PR c++/123810
* module.cc (check_mergeable_decl) <case TYPE_DECL>: Handle
merging a typedef to an unnamed type with the -freflection
representation.
2026-04-29 Julian Brown <julian@codesourcery.com>
* parser.cc (cp_parser_omp_target_data): Instantiate mappers for 'omp
target data'.
(cp_parser_omp_target_enter_data): Instantiate mappers for 'omp target
enter data'.
(cp_parser_omp_target_exit_data): Instantiate mappers for 'omp target
exit data'.
(cp_parser_omp_target): Add c_omp_region_type argument to
c_omp_instantiate_mappers call.
* pt.cc (tsubst_omp_clauses): Instantiate mappers for OMP regions other
than just C_ORT_OMP_TARGET.
(tsubst_expr): Update call to tsubst_omp_clauses for OMP_TARGET_UPDATE,
OMP_TARGET_ENTER_DATA, OMP_TARGET_EXIT_DATA stanza.
* semantics.cc (cxx_omp_map_array_section): Avoid calling
build_array_ref for non-array/non-pointer bases (error reported
already).
2026-04-29 Jakub Jelinek <jakub@redhat.com>
* reflect.cc (compare_reflection): For REFLECT_BASE use lhs == rhs rather
than cp_tree_equal.
2026-04-28 Marek Polacek <polacek@redhat.com>
PR c++/124756
* reflect.cc (get_reflection): Give an error when taking the
reflection of a block-scope extern.
2026-04-28 Marek Polacek <polacek@redhat.com>
* error.cc (inform_tree_category): Also print concept and alias
template.
* pt.cc (tsubst_splice_scope): Reword the diagnostic messages.
Call inform_tree_category.
2026-04-28 Jason Merrill <jason@redhat.com>
PR c++/125022
* decl.cc (store_parm_decls): Only do trivial_abi stuff when
!processing_template_decl.
2026-04-27 Patrick Palka <ppalka@redhat.com>
PR c++/124978
PR c++/115314
* semantics.cc (finish_decltype_type): Check REFERENCE_REF_P
instead of INDIRECT_REF_P before stripping implicit dereferences.
2026-04-27 Patrick Palka <ppalka@redhat.com>
PR c++/124953
* module.cc (trees_in::tree_node) <tt_nttp_var>: Push the result
of get_template_parm_object to post_load_decls.
(post_load_processing): Call cp_finish_decl on any not yet
completed NTTP objects.
* pt.cc (get_template_parm_object): Don't call cp_finish_decl
when !check_init.
2026-04-27 Jason Merrill <jason@redhat.com>
PR c++/124910
DR 2658
* constexpr.cc (reduced_constant_expression_p): Allow a union
with no active member.
2026-04-23 Patrick Palka <ppalka@redhat.com>
* module.cc (trees_out::core_vals) <case PTRMEM_CST>:
Stream PTRMEM_CST_LOCATION.
<case TRAIT_EXPR>: Stream TRAIT_EXPR_LOCATION.
(trees_in::core_vals): As in trees_out::core_vals.
2026-04-23 Patrick Palka <ppalka@redhat.com>
PR c++/124981
* module.cc (trees_in::core_vals) <case PTRMEM_CST>: Use RTU
instead of RT to stream PTRMEM_CST_MEMBER.
2026-04-23 Marek Polacek <polacek@redhat.com>
* cp-tree.h (lookup_annotation): Declare.
* decl.cc (grokfndecl): Use lookup_annotation.
(grokdeclarator): Likewise.
* name-lookup.cc (push_local_extern_decl_alias): Likewise.
* parser.cc (cp_parser_decomposition_declaration): Likewise.
* reflect.cc (eval_annotations_of): Likewise.
* tree.cc (lookup_annotation): New.
2026-04-23 Marek Polacek <polacek@redhat.com>
* cp-tree.h (enum linkage_kind): Add lk_module.
* module.cc (check_module_decl_linkage): Use DECL_EXTERNAL_LINKAGE_P.
* name-lookup.cc (check_can_export_using_decl): Don't check for
attachment.
* parser.cc (cp_parser_template_argument): Check that linkage isn't
lk_module.
* reflect.cc (eval_has_module_linkage): Check lk_module.
(eval_has_external_linkage): Use DECL_EXTERNAL_LINKAGE_P.
* tree.cc (decl_linkage): Return lk_module if appropriate.
2026-04-23 Marek Polacek <polacek@redhat.com>
DR 2229
PR c++/123935
* decl2.cc (grokbitfield): Add pedwarn for cv-qualified unnamed
bit-fields.
2026-04-23 Marek Polacek <polacek@redhat.com>
PR c++/124989
* pt.cc (tsubst_splice_expr): Turn off access checking for the
build_offset_ref call.
2026-04-23 Ben Wu <soggysocks206@gmail.com>
PR c++/118374
PR c++/41127
* parser.cc (cp_parser_enum_specifier): Parse definitely
before cp_parser_type_specifier_seq.
2026-04-23 Yuxuan Chen <i@yuxuan.ch>
PR c++/107187
* cp-tree.h (has_trivial_abi_attribute): New function.
(validate_trivial_abi_attribute): Declare.
(classtype_has_non_deleted_copy_or_move_ctor): Declare.
(cxx_clang_attribute_table): Declare.
* tree.cc (handle_trivial_abi_attribute): New function.
(handle_gnu_trivial_abi_attribute): New function.
(classtype_has_trivial_abi): New function.
(validate_trivial_abi_attribute): New function.
(cxx_gnu_attributes): Add trivial_abi entry.
(cxx_clang_attributes): New table for [[clang::trivial_abi]].
* class.cc (finish_struct_bits): Skip BLKmode for types with
trivial_abi attribute.
(classtype_has_non_deleted_copy_or_move_ctor): New function.
(finish_struct_1): Call validate_trivial_abi_attribute before
finish_struct_bits.
* cp-objcp-common.h (cp_objcp_attribute_table): Register
cxx_clang_attribute_table.
* decl.cc (store_parm_decls): Register cleanups for trivial_abi
parameters.
2026-04-23 Jason Merrill <jason@redhat.com>
PR c++/124973
* cp-gimplify.cc (cp_fold_r): Fix typo.
2026-04-23 Marek Polacek <polacek@redhat.com>
PR c++/124926
* pt.cc (tsubst_qualified_id): Rename name_lookup_p parameter to
reflecting_p. Check !reflecting_p instead of name_lookup_p. Do
not give the "instantiation yields a type" error when reflecting_p
is true.
(tsubst_expr) <case REFLECT_EXPR>: Adjust the call to
tsubst_qualified_id.
2026-04-22 Jason Merrill <jason@redhat.com>
PR c++/124973
PR c++/120502
PR c++/120005
* cp-gimplify.cc (cp_fold_r) <case TARGET_EXPR>: Only
do optimization folding when ff_genericize.
(cp_fold) <case CALL_EXPR>: Don't do
optimization folding when ff_only_non_odr.
2026-04-21 Jason Merrill <jason@redhat.com>
PR c++/123879
* module.cc (maybe_translate_include): Use lrealpath in check
whether we're including something in the same directory.
2026-04-21 Jakub Jelinek <jakub@redhat.com>
PR c++/124944
* parser.cc (cp_parser_mem_initializer_id): Parse
splice-type-specifier.
2026-04-21 Jakub Jelinek <jakub@redhat.com>
PR c++/124927
* pt.cc (finish_expansion_stmt): Compute types for force_target_expr
from b and e before extracting TARGET_EXPR_INITIAL from it.
2026-04-20 Jason Merrill <jason@redhat.com>
PR c++/124910
* constexpr.cc (cxx_eval_store_expression): Ending the
lifetime of the active member means no active member.
2026-04-20 Marek Polacek <polacek@redhat.com>
PR c++/124706
* parser.cc (cp_parser_splice_type_specifier): For ctad_template_p
call make_template_placeholder.
* pt.cc (tsubst_splice_scope): Likewise.
2026-04-20 Iain Sandoe <iain@sandoe.co.uk>
PR c++/124648
* contracts.cc (maybe_apply_function_contracts): Nest pre and
post conditions inside the outer bind expression of a lambda
with captures.
2026-04-20 Marek Polacek <polacek@redhat.com>
PR c++/124855
* reflect.cc (consteval_only_p): Return false if the type is
dependent.
2026-04-17 Marek Polacek <polacek@redhat.com>
* cp-tree.h (reflection_function_template_p): Change the
parameter to const_tree.
* reflect.cc (valid_splice_for_member_access_p): Use
reflection_function_template_p.
(reflection_function_template_p): Check DECL_FUNCTION_TEMPLATE_P
instead of really_overloaded_fn. Unwrap BASELINKs and OVERLOADs.
Adjust the parameter type.
2026-04-17 Marek Polacek <polacek@redhat.com>
* reflect.cc (splice): Detect a null reflection.
2026-04-17 Jakub Jelinek <jakub@redhat.com>
* lex.cc (cxx_init): Don't call cpp_warn on contract_assert,
instead call it on pre and post.
2026-04-17 Jakub Jelinek <jakub@redhat.com>
PR c++/123783
* reflect.cc (splice): Reject splicing of function parameters.
2026-04-17 Jason Merrill <jason@redhat.com>
PR c++/124632
* constexpr.cc (cxx_eval_call_expression): Unshare bindings
sooner.
2026-04-16 Jakub Jelinek <jakub@redhat.com>
* reflect.cc (dump_data_member_spec): Temporarily ignore
-Wformat and -Wformat-diag warnings.
2026-04-16 Marek Polacek <polacek@redhat.com>
PR c++/124614
* cp-tree.h (valid_splice_for_member_access_p): Declare.
(dump_data_member_spec): Declare.
* error.cc (dump_expr) <case REFLECT_EXPR>: Print a data member
description.
* parser.cc (cp_parser_splice_expression): Use
valid_splice_for_member_access_p.
* pt.cc (tsubst_splice_expr): Likewise.
* reflect.cc (dump_data_member_spec): New.
(eval_display_string_of): Use it.
(valid_splice_for_member_access_p): New.
(check_splice_expr): Check that we got
valid_splice_for_member_access_p for a member access.
* typeck.cc (finish_class_member_access_expr): Use
valid_splice_for_member_access_p.
2026-04-16 Jakub Jelinek <jakub@redhat.com>
PR c++/124120
* pt.cc (finish_expansion_stmt): Give iter variable an artificial
name.
2026-04-16 Egas Ribeiro <egas.g.ribeiro@gmail.com>
Jason Merrill <jason@redhat.com>
PR c++/123346
* constexpr.cc (init_subob_ctx): Do initialize new_ctx.ctor
for an empty union member.
2026-04-16 Iain Sandoe <iains.gcc@gmail.com>
Jason Merrill <jason@redhat.com>
PR c++/124648
* cp-tree.h (DECL_CONTRACT_CAPTURE_P): New.
* parser.cc (cp_parser_lambda_body): Scan the captures for
ones were only added in contract assertion scopes. Issue
errors for those found.
* semantics.cc (process_outer_var_ref): Mark implicit
captures that occur in contract assertion scopes. Clear
the mark if the entity is subsequently captured 'normally'.
(set_contract_capture_flag): New.
2026-04-16 Iain Sandoe <iains.gcc@gmail.com>
Jason Merrill <jason@redhat.com>
* contracts.cc (view_as_const): Check for const-qualified
class pointer before wrapping it.
* parser.cc (cp_parser_late_contract_condition): Use revised
handling of const-ification of class pointers.
(cp_parser_contract_assert): Likewise.
(cp_parser_function_contract_specifier): Likewise.
2026-04-15 Marek Polacek <polacek@redhat.com>
PR c++/120338
* decl.cc (cp_finish_decl): Set DECL_INITIAL to error_mark_node
instead of NULL_TREE for deleted main.
2026-04-15 Marek Polacek <polacek@redhat.com>
PR c++/123783
* lambda.cc (add_capture): When trying to capture something in
an instantiation of generic lambda, give an error instead of an ICE.
2026-04-15 Patrick Palka <ppalka@redhat.com>
PR c++/124824
* decl.cc (cp_finish_decl): Sink !consteval_only_p check to
only guard the varpool_node::get_create call.
2026-04-15 Jakub Jelinek <jakub@redhat.com>
PR c++/124755
* constexpr.cc (cxx_eval_constant_expression): If TARGET_EXPR_INITIAL
throws and !is_complex and type is neither aggregate nor vector,
call ctx->global->put_value (slot, NULL) before returning.
2026-04-15 Jason Merrill <jason@redhat.com>
PR c++/117133
PR c++/124768
PR c++/124773
* mangle.cc (unmangled_name_p): Don't mangle internal extern "C"
variables.
2026-04-15 Jason Merrill <jason@redhat.com>
PR c++/121643
PR c++/123975
* coroutines.cc (build_co_await): Pass rvalue to await_suspend.
(expand_one_await_expression): Fix await_suspend surgery.
2026-04-15 Jason Merrill <jason@redhat.com>
PR c++/121961
* coroutines.cc (build_actor_fn): Move the delete label before
the refcount handling.
(cp_coroutine_transform::build_ramp_function): Decrement refcount
after destroying gro.
2026-04-15 Jakub Jelinek <jakub@redhat.com>
* pt.cc (finish_expansion_stmt): Implement CWG3149 - Rvalues in
destructuring expansion statements. For esk_destructuring, if
expansion_init is not lvalue_p, wrap init into a static_cast
to decltype of destruct_decls[i].
2026-04-15 Jakub Jelinek <jakub@redhat.com>
* mangle.cc (write_reflection): Adjust grammar for type alias
reflections. Don't use write_prefix on arg, instead
write_prefix its mangling context, write_unqualified_name of
the alias, optionally write_template_args, append underscore
and write_type the original type.
2026-04-15 Jakub Jelinek <jakub@redhat.com>
PR c++/124862
* decl.cc (cp_decomp_size): If btype is different from type,
check if it is accessible.
2026-04-15 Jakub Jelinek <jakub@redhat.com>
PR c++/124850
* typeck.cc (cxx_mark_addressable): For DECL_ANON_UNION_VAR_P vars
also mark their DECL_VALUE_EXPR.
2026-04-15 Jakub Jelinek <jakub@redhat.com>
* reflect.cc (adjust_array_elt): New function.
(get_range_elts): Implement LWG4483 - Multidimensional arrays are not
supported by meta::reflect_constant_array and related functions.
Handle ARRAY_TYPE valuet. Don't unshare_expr in the class valuet case,
get_template_param_object will unshare.
2026-04-14 Patrick Palka <ppalka@redhat.com>
PR c++/124544
* tree.cc (strip_typedefs_expr) <case REFLECT_EXPR>: Don't
recurse into a type operand.
(cp_tree_equal) <case REFLECT_EXPR>: For a reflection of an
alias, also compare TYPE_NAMEs directly.
2026-04-14 Marek Polacek <polacek@redhat.com>
* cp-tree.h (reflection_function_template_p): Declare.
* parser.cc (cp_parser_splice_expression): Use
reflection_function_template_p instead of really_overloaded_fn.
* reflect.cc (check_splice_expr): Likewise.
(reflection_function_template_p): New.
2026-04-13 Marek Polacek <polacek@redhat.com>
PR c++/123237
PR c++/124771
PR c++/124842
* mangle.cc (write_splice): New.
(write_prefix): Call write_splice for SPLICE_SCOPE.
(write_type): Likewise.
(write_expression): Call write_splice for dependent_splice_p.
(write_reflection): Handle the "tt" and "de" prefixes.
* reflect.cc (reflection_mangle_prefix): For
DECL_TEMPLATE_TEMPLATE_PARM_P, use the prefix "tt". For
dependent reflections, use "de".
2026-04-13 Marek Polacek <polacek@redhat.com>
PR c++/124835
* parser.cc (cp_parser_decltype_expr): Check that [: :] is
followed by a close paren before declaring it an unparenthesized
splice-expression.
2026-04-13 Jason Merrill <jason@redhat.com>
PR c++/103901
PR c++/123566
* pt.cc (push_template_decl): Sorry on local class in lambda in
template parm list.
2026-04-13 Jason Merrill <jason@redhat.com>
PR c++/122632
* pt.cc (tsubst_exception_specification): Add cp_unevaluated.
2026-04-13 Jason Merrill <jason@redhat.com>
PR c++/122884
* pt.cc (reconstruct_lambda_capture_pack): New.
(tsubst_pack_expansion): Use it.
(tsubst_decl): Handle capture proxy.
(tsubst): Handle lambda closure.
(tsubst_expr): Handle closure field.
(tsubst_lambda_expr): Copy closure location.
* constraint.cc (satisfy_declaration_constraints): Set up
local_specializations for a lambda.
2026-04-10 Jakub Jelinek <jakub@redhat.com>
PR c++/124831
* reflect.cc (namespace_members_of): Append reflection of anon unions
when we see it first time as CP_DECL_CONTEXT of some CONST_DECL in
the namespace.
2026-04-10 Jakub Jelinek <jakub@redhat.com>
PR c++/124792
* pt.cc (get_template_parm_object): Call unshare_expr_without_location
on expr if check_init.
2026-04-09 Marek Polacek <polacek@redhat.com>
PR c++/123998
* cp-tree.h (SPLICE_EXPR_TEMPLATE_P): Define.
(SET_SPLICE_EXPR_TEMPLATE_P): Define.
(SPLICE_EXPR_TARGS_P): Define.
(SET_SPLICE_EXPR_TARGS_P): Define.
(check_splice_expr): Adjust.
* parser.cc (cp_parser_splice_expression): Do
SET_SPLICE_EXPR_TEMPLATE_P and SET_SPLICE_EXPR_TARGS_P. Adjust
the call to check_splice_expr. Move the template_p checking into
check_splice_expr.
* pt.cc (tsubst_splice_expr): Do SET_SPLICE_EXPR_TEMPLATE_P and
SET_SPLICE_EXPR_TARGS_P. Adjust the call to check_splice_expr.
* reflect.cc (eval_constant_of): Adjust the call to
check_splice_expr.
(check_splice_expr): Two new bool parameters. Add the template_p
checking from cp_parser_splice_expression. Allow
variable_template_p in the assert. Add a check for
DECL_TYPE_TEMPLATE_P.
2026-04-09 Dhruv Chawla <dhruvc@nvidia.com>
* Make-lang.in (create_fdas_for_cc1plus): Use $(AFDO_PROFILER) when
passing --profiler to create_gcov. Ensure that perf.data contains
profile for cc1plus. Make the console output more useful.
2026-04-08 Marek Polacek <polacek@redhat.com>
Boris Staletic <boris.staletic@protonmail.com>
PR c++/123726
* reflect.cc (check_splice_expr): Detect accessing a class template
or alias template with . or ->.
* typeck.cc (finish_class_member_access_expr): Check if the scope of
the spliced entity in a member access expression is of a class type.
Allow variable_template_p for context_for_name_lookup.
2026-04-08 Marek Polacek <polacek@redhat.com>
PR c++/124457
* parser.cc (cp_parser_reflect_expression): Check is_auto here
instead of...
* reflect.cc (get_reflection): ...here.
2026-04-08 Marek Polacek <polacek@redhat.com>
Boris Staletic <boris.staletic@protonmail.com>
PR c++/124177
* tree.cc (handle_annotation_attribute): Decay annotation
values. Turn if !type_dependent_expression_p into an assert.
2026-04-08 Yang Kun <yangkun@disroot.org>
* pt.cc (tsubst_expr): Use gcc_unreachable, not gcc_assert.
* parser.cc (cp_parser_template_id): Likewise.
* reflect.cc (eval_template_of): Likewise.
2026-04-08 Yang Kun <yangkun@disroot.org>
* reflect.cc (eval_current_function): Add missing return.
(eval_current_class): Likewise.
2026-04-08 Yang Kun <yangkun@disroot.org>
* reflect.cc (eval_display_string_of): Fix copy-paste error in exception
messages.
2026-04-08 Jakub Jelinek <jakub@redhat.com>
* parser.cc (cp_parser_omp_loop_nest): Write orig_declv, not incrv.
2026-04-08 Yang Kun <yangkun@disroot.org>
* parser.cc (cp_parser_omp_clause_proc_bind): Fix error message
(cp_parser_omp_clause_device_type): Likewise.
2026-04-08 Marek Polacek <polacek@redhat.com>
PR c++/124617
* parser.cc (cp_parser_reflect_expression): Call baselink_for_fns.
2026-04-08 Jakub Jelinek <jakub@redhat.com>
* constraint.cc (diagnose_trait_expr): Remove CPTK_IS_CONSTEVAL_ONLY
handling.
* metafns.gperf (enum metafn_code): Remove
METAFN_IS_CONSTEVAL_ONLY_TYPE.
(is_consteval_only_type): Remove.
* semantics.cc (trait_expr_value, finish_trait_expr): Remove
CPTK_IS_CONSTEVAL_ONLY handling.
* cp-trait.def (__builtin_is_consteval_only): Remove.
* metafns.h: Regenerate.
* reflect.cc (eval_is_consteval_only_type): Remove.
(process_metafunction): Don't handle METAFN_IS_CONSTEVAL_ONLY_TYPE.
2026-04-08 Jakub Jelinek <jakub@redhat.com>
* decl.cc (cp_finish_decomp): Implement CWG3135 - constexpr structured
bindings with prvalues from tuples (as a DR). Don't call
cp_build_reference_type if init is prvalue.
2026-04-07 Patrick Palka <ppalka@redhat.com>
PR c++/123700
* pt.cc (dependent_opaque_alias_p): Return true for a
template-id typedef with a lambda targ.
2026-04-07 Patrick Palka <ppalka@redhat.com>
PR c++/123529
PR c++/98930
* pt.cc (has_value_dependent_address): Correct context
dependence check for a static local variable.
2026-04-07 Jakub Jelinek <jakub@redhat.com>
* cp-tree.h: Implement C++26 CWG3140 - Allowing expansion over
non-constant std::array.
(cp_build_range_for_decls): Change last argument from bool to tree.
(build_range_temp): Likewise and default it to NULL_TREE rather than
false.
* parser.cc (build_range_temp): Remove expansion_stmt_p
argument, add expansion_stmt_decl. Don't call cp_build_qualified_type
if expansion_stmt_decl was not declared constexpr.
(cp_build_range_for_decls): Remove expansion_stmt_p argument, add
expansion_stmt_decl. Pass expansion_stmt_decl to build_range_temp.
Don't set TREE_STATIC, TREE_PUBLIC, DECL_COMMON, DECL_INTERFACE_KNOWN,
DECL_DECLARED_CONSTEXPR_P and TREE_READONLY on range_temp if
expansion_stmt_decl was not declared constexpr. Don't call
cp_build_qualified_type on begin type nor set TREE_STATIC etc. on begin
if expansion_stmt_decl was not declared constexpr. If
expansion_stmt_decl is non-NULL, don't build end at all, instead pass
begin_expr and end_expr in end_p[0] and end_p[1] to the caller.
(cp_convert_range_for): Adjust cp_build_range_for_decls caller.
* pt.cc (finish_expansion_stmt): Likewise. Use begin_expr and end_expr
instead of begin and end variables from cp_build_range_for_decls,
make them non-constant and avoid spurious -Wunused-result/nodiscard
diagnostics.
2026-04-07 Jakub Jelinek <jakub@redhat.com>
PR c++/124487
* mangle.cc (write_type) <case PACK_INDEX_TYPE>: Handle even
the case of partially substituted pack.
(write_expression): Similarly for PACK_INDEX_EXPR.
2026-04-07 Jakub Jelinek <jakub@redhat.com>
PR c++/124790
* reflect.cc (get_reflection): When reflecting VAR_DECL or PARM_DECL,
call mark_exp_read on it.
2026-04-06 Nathaniel Shead <nathanieloshead@gmail.com>
PR libstdc++/124268
* module.cc (instantiating_tu_local_entity): Use pedwarn instead
of warning.
(depset::hash::add_binding_entity): Don't skip exported
using-decls as TU-local entities.
(depset::hash::finalize_dependencies): Don't attempt to complain
again about using-decls referencing TU-local entities.
* name-lookup.cc (check_can_export_using_decl): Demote the error
to a warning for using-decls of GMF vars or functions.
2026-04-06 Nathaniel Shead <nathanieloshead@gmail.com>
PR c++/124735
* module.cc (trees_in::is_matching_decl): Handle importing
undeduced auto when existing is already deduced.
2026-04-06 Nathaniel Shead <nathanieloshead@gmail.com>
PR c++/124781
* module.cc (set_originating_module): Add a function comment,
only set attachment/exporting for entities with non-NULL
DECL_CONTEXT.
(check_module_decl_linkage): Use decl_anon_ns_mem_p instead of
decl_internal_context_p.
2026-04-06 Nathaniel Shead <nathanieloshead@gmail.com>
PR c++/124785
* module.cc (trees_in::is_matching_decl): Narrow condition for
when noexcept propagation occurs; assert that we don't propagate
noexcept-specs for TEMPLATE_DECLs.
2026-04-06 Nathaniel Shead <nathanieloshead@gmail.com>
PR c++/118630
* module.cc (depset::hash::add_dependency): Correct entry point
corection for recursive clusters.
2026-04-06 Jakub Jelinek <jakub@redhat.com>
PR c++/124488
* parser.cc (cp_parser_expansion_statement): Set
DECL_INITIALIZED_BY_CONSTANT_EXPRESSION_P, DECL_DEPENDENT_INIT_P and
if maybe constant non-reference TREE_CONSTANT on range_decl.
* pt.cc (tsubst_stmt) <case TEMPLATE_FOR_STMT>: Set
DECL_DEPENDENT_INIT_P on decl.
2026-04-06 Jakub Jelinek <jakub@redhat.com>
* decl.cc (grokfndecl): For -freflection mark annotations of
PARM_DECLs in a function definition.
* reflect.cc (eval_annotations_of): Allow annotations_of on
function parameters. For r which is a PARM_DECL without REFLECT_PARM,
filter out annotations not marked by grokfndecl.
(reflection_mangle_prefix): Preserve the grokfndecl marking of
annotations during mangling.
2026-04-06 Eczbek <eczbek.void@gmail.com>
PR c++/123087
* typeck.cc (cp_build_unary_op): For TRUTH_NOT_EXPR, replace
call to perform_implicit_conversion with call to
contextual_conv_bool.
2026-04-05 Jakub Jelinek <jakub@redhat.com>
PR c++/124689
* metafns.gperf (enum metafn_kind): Add
METAFN_KIND_BOOL_INFO_REFLECTION_RANGE.
(can_substitute): Use METAFN_KIND_BOOL_INFO_REFLECTION_RANGE
instead of METAFN_KIND_INFO_INFO_REFLECTION_RANGE.
(METAFN_KIND_ARG): Add MINFO argument.
(METAFN_KIND_RET): Define.
* reflect.cc (is_std_meta_class): New function.
(get_info): Add LOC argument, diagnose invalid argument type instead
of failing assertion.
(check_metafn_arg_type): New function.
(check_metafn_return_type): New function.
(process_metafunction): Diagnose clearly invalid return
or argument types. Use rettype variable instead of TREE_TYPE (call).
* metafns.h: Regenerate.
2026-04-04 Roger Sayle <roger@nextmovesoftware.com>
PR c++/124573
* decl.cc (finish_enum_value_list): Defend against a DECL_INITIAL
being NULL during error recovery.
2026-04-04 Jakub Jelinek <jakub@redhat.com>
* parser.cc (cp_parser_expansion_statement): Temporarily set
in_expansion_stmt to true around cp_parser_simple_declaration
for range_decl.
(cp_parser_decomposition_declaration): Don't reject structured binding
packs if in_expansion_stmt is set.
2026-04-04 Jakub Jelinek <jakub@redhat.com>
PR c++/124487
* mangle.cc (write_type) <case PACK_INDEX_TYPE>: Handle pack index
mangling unless (for now) PACK_INDEX_PACK is a TREE_VEC.
(write_expression): Handle PACK_INDEX_EXPR.
2026-04-04 Jakub Jelinek <jakub@redhat.com>
PR c++/124198
* parser.cc (cp_parser_pack_index): If index is not type dependent,
call build_converted_constant_expr on it. Return error_mark_node
if index is error_operand_p.
* pt.cc (tsubst_pack_index): Likewise.
2026-04-03 Alexandre Oliva <oliva@adacore.com>
* coroutines.cc (cp_coroutine_transform::build_ramp_function):
Zero-initialize refcount.
2026-04-03 Jakub Jelinek <jakub@redhat.com>
* cp-trait.def (__builtin_is_structural): New trait.
* semantics.cc (trait_expr_value): Handle CPTK_IS_STRUCTURAL.
(finish_trait_expr): Likewise.
* constraint.cc (diagnose_trait_expr): Likewise.
* metafns.gperf (enum metafn_code): Add METAFN_IS_STRUCTURAL_TYPE.
(is_structural_type): New metafn.
* metafns.h: Regenerate.
* reflect.cc (eval_is_structural_type): New function.
(process_metafunction): Handle METAFN_IS_STRUCTURAL_TYPE.
2026-04-03 Jakub Jelinek <jakub@redhat.com>
* cp-tree.h (enum cp_built_in_function): Add
CP_BUILT_IN_CURRENT_EXCEPTION and CP_BUILT_IN_UNCAUGHT_EXCEPTIONS.
* tree.cc (builtin_valid_in_constant_expr_p): Handle
those.
* decl.cc (cxx_init_decl_processing): Build
decls for CP_BUILT_IN_CURRENT_EXCEPTION and
CP_BUILT_IN_UNCAUGHT_EXCEPTIONS.
(require_deduced_type): Deduce CP_BUILT_IN_CURRENT_EXCEPTION
return type.
* cp-gimplify.cc (cp_gimplify_expr): Handle
CP_BUILT_IN_CURRENT_EXCEPTION and CP_BUILT_IN_UNCAUGHT_EXCEPTIONS.
* constexpr.cc (enum cxa_builtin): Remove STD_UNCAUGHT_EXCEPTIONS
and STD_CURRENT_EXCEPTION, add BUILTIN_UNCAUGHT_EXCEPTIONS and
BUILTIN_CURRENT_EXCEPTION, renumber some enumerators.
(cxx_cxa_builtin_fn_p): Don't check for std::uncaught_exceptions
nor std::current_exception.
(cxx_eval_cxa_builtin_fn): Handle BUILTIN_UNCAUGHT_EXCEPTIONS
and BUILTIN_CURRENT_EXCEPTION instead of STD_UNCAUGHT_EXCEPTIONS
and STD_CURRENT_EXCEPTION.
(cxx_eval_builtin_function_call): Handle
CP_BUILT_IN_CURRENT_EXCEPTION and CP_BUILT_IN_UNCAUGHT_EXCEPTIONS.
Do just one fndecl_builtin_p check for BUILT_IN_FRONTEND and
switch on DECL_FE_FUNCTION_CODE.
2026-04-03 Jakub Jelinek <jakub@redhat.com>
* reflect.cc (eval_data_member_spec): Implement C++26 LWG4517
- data_member_spec should throw for cv-qualified unnamed bit-fields.
2026-04-03 Jakub Jelinek <jakub@redhat.com>
PR c++/124531
* init.cc (build_vec_init): Call braced_lists_to_strings for
array CONSTRUCTORs. Handle RAW_DATA_CST and handle RANGE_EXPR
correctly.
2026-04-02 Nathaniel Shead <nathanieloshead@gmail.com>
PR c++/124477
* module.cc (trees_in::read_function_def): Set DECL_ARGUMENTS if
installing and otherwise missing.
2026-04-02 Marek Polacek <polacek@redhat.com>
PR c++/124646
PR c++/124645
* call.cc (set_up_extended_ref_temp): Move setting DECL_EXTERNAL
to the !at_function_scope_p block.
2026-04-01 Jakub Jelinek <jakub@redhat.com>
* name-lookup.cc (push_local_extern_decl_alias): Diagnose annotations
on local externs and their arguments.
* decl.cc (grokdeclarator): Diagnose annotations on non-defining
friends and their arguments.
2026-04-01 Jakub Jelinek <jakub@redhat.com>
* mangle.cc (write_reflection): Change ^^:: mangling in grammar
from LDmngE to LDmgsE.
* reflect.cc (reflection_mangle_prefix): Set prefix to "gs" rather
than "ng" for global_namespace.
2026-03-31 Jakub Jelinek <jakub@redhat.com>
* reflect.cc (reflect_current_scope): Use decl_namespace_list->last ()
in preference to current_namespace.
2026-03-31 Jakub Jelinek <jakub@redhat.com>
* reflect.cc (get_range_elts): If N is negative, just use the tree
as object to extract range from instead of finding Nth argument
of a call.
(eval_is_bit_field, eval_type_of, eval_size_of, eval_alignment_of,
eval_bit_size_of, eval_has_identifier, eval_identifier_of): Adjust
function comments from P3795R2.
(eval_display_string_of): Handle annotations in
REFLECT_DATA_MEMBER_SPEC.
(eval_annotations_of): Adjust function comments from P3795R2.
(eval_data_member_spec): Likewise. Read and diagnose annotations.
(eval_define_aggregate): Adjust function comments from P3795R2.
Create annotations.
(compare_reflections): Compare REFLECT_DATA_MEMBER_SPEC annotations.
* mangle.cc (write_reflection): Mangle REFLECT_DATA_MEMBER_SPEC
annotations.
2026-03-31 Jakub Jelinek <jakub@redhat.com>
* metafns.gperf (enum metafn_code): Add METAFN_CURRENT_FUNCTION,
METAFN_CURRENT_CLASS and METAFN_CURRENT_NAMESPACE.
(enum metafn_kind): Add METAFN_KIND_INFO_VOID.
(current_function, current_class, current_namespace): New
metafunctions.
* pt.cc (value_dependent_expression_p): Make current_function(),
current_class() and current_namespace() calls dependent if they
are inside of template.
* reflect.cc (reflect_current_scope, eval_current_function,
eval_current_class, eval_current_namespace): New functions.
(eval_access_context_current): Use reflect_current_scope.
(process_metafunction): Handle METAFN_CURRENT_FUNCTION,
METAFN_CURRENT_CLASS and METAFN_CURRENT_NAMESPACE.
* metafns.h: Regenerate.
2026-03-31 Jakub Jelinek <jakub@redhat.com>
* reflect.cc (eval_data_member_spec): Add anonymous enums for
fields in std::meta::data_member_options and
std::meta::data_member_options::_Name and use them instead of
hardcoded constants.
2026-03-31 Marek Polacek <polacek@redhat.com>
* reflect.cc (eval_offset_of): Update comment.
2026-03-31 Jakub Jelinek <jakub@redhat.com>
* reflect.cc (eval_data_member_spec): Fix up check for diagnostics
when reverse conversion fails.
2026-03-30 Jakub Jelinek <jakub@redhat.com>
* metafns.gperf (enum metafn_code): Remove
METAFN_HAS_ELLIPSIS_PARAMETER, add METAFN_IS_VARARG_FUNCTION.
(has_ellipsis_parameter): Remove.
(is_vararg_function): Add.
* reflect.cc (eval_has_ellipsis_parameter): Rename to ...
(eval_is_vararg_function): ... this. Adjust function comment.
(process_metafunction): Handle METAFN_IS_VARARG_FUNCTION
instead of METAFN_HAS_ELLIPSIS_PARAMETER.
* metafns.h: Regenerate.
2026-03-26 Marek Polacek <polacek@redhat.com>
PR c++/123613
* reflect.cc (get_reflection): Call mark_used.
(eval_can_substitute): Don't resolve_nondeduced_context here.
(eval_substitute): Call lookup_and_finish_template_variable instead
of lookup_template_variable and finish_template_variable.
2026-03-21 Nathaniel Shead <nathanieloshead@gmail.com>
PR c++/122786
* module.cc (trees_in::decl_value): Set section name from
attribute.
2026-03-21 Nathaniel Shead <nathanieloshead@gmail.com>
PR c++/124483
* module.cc (trees_in::fn_parms_init): Set TREE_USED and
DECL_READ_P for parameters deliberately marked unused.
2026-03-20 Marek Polacek <polacek@redhat.com>
PR c++/124575
* call.cc (set_up_extended_ref_temp): If var is consteval-only,
mark it DECL_EXTERNAL.
2026-03-19 Jason Merrill <jason@redhat.com>
* constexpr.cc (build_constexpr_constructor_member_initializers):
Handle TRY_FINALLY_EXPR.
(potential_constant_expression_1): Handle EH_ELSE_EXPR.
(check_for_failed_contracts): Handle non-MCE case.
(cxx_eval_outermost_constant_expr): Call it sooner.
2026-03-18 Dhruv Chawla <dhruvc@nvidia.com>
* Make-lang.in (cc1plus.fda): Add `--print-autofdo-gcov-version` to
profile_merger invocation.
(create_fdas_for_cc1plus): Add `--print-autofdo-gcov-version` to
create_gcov invocations.
2026-03-18 Jakub Jelinek <jakub@redhat.com>
PR c++/124474
* reflect.cc (check_out_of_consteval_use_r): Don't walk subtrees
of RETURN_EXPR on cdtor_returns_this targets in cdtors.
2026-03-17 Marek Polacek <polacek@redhat.com>
PR c++/124493
* error.cc (inform_tree_category): Handle variable templates.
2026-03-17 Marek Polacek <polacek@redhat.com>
PR c++/124472
* parser.cc (cp_parser_reflection_name): Move the
cp_preserve_using_decl overriding below, before
cp_parser_lookup_name_simple.
2026-03-17 Marek Polacek <polacek@redhat.com>
PR c++/124493
* pt.cc (tsubst) <case TEMPLATE_ID_EXPR>: Check that templ is
either DECL_TYPE_TEMPLATE_P or DECL_TEMPLATE_TEMPLATE_PARM_P.
2026-03-16 Marek Polacek <polacek@redhat.com>
PR c++/124496
* parser.cc (cp_parser_splice_specifier): Use NULL_TREE instead of
NULL.
(cp_parser_splice_expression): Don't assert seen_error() when not
committed to tentative parse.
2026-03-16 Marek Polacek <polacek@redhat.com>
PR c++/123618
* tree.cc (handle_annotation_attribute): Reject annotations on void
parameters.
2026-03-16 Andrew Pinski <andrew.pinski@oss.qualcomm.com>
PR c++/124307
* parser.cc (cp_parser_base_specifier): Check for
error mark like checking for non-nullness on the
attribute.
2026-03-16 Marek Polacek <polacek@redhat.com>
PR c++/124489
* error.cc (dump_type) <case NULLPTR_TYPE>: Use pp_cxx_ws_string
instead of pp_string.
<case META_TYPE>: Likewise.
2026-03-16 Jakub Jelinek <jakub@redhat.com>
PR c++/120039
PR c++/122559
* pt.cc (tsubst_expr) <case VAR_DECL>: Don't call lookup_name on
DECL_NAME (t) if it is NULL_TREE.
2026-03-14 Jakub Jelinek <jakub@redhat.com>
PR c++/124399
* decl.cc (grokdeclarator): If both *attrlist and
declarator->std_attributes list contain annotations, chainon
declarator->std_attributes to tail of copy_list (*attrlist)
rather than *attrlist to tail of declarator->std_attributes.
2026-03-14 Nathaniel Shead <nathanieloshead@gmail.com>
PR c++/124485
* cp-tree.h (lazy_load_pendings): Declare new overload.
* module.cc (lazy_load_pendings): Define it.
* name-lookup.cc (lookup_elaborated_type): Load pending entities
with given name before doing namespace-scope lookup.
(pushtag): Remove no-longer-needed pending load.
2026-03-14 Jakub Jelinek <jakub@redhat.com>
PR c++/124456
* pt.cc (tsubst_pack_expansion): For structured binding pack
with type dependent pack set arg_pack to NULL_TREE.
2026-03-14 Nathaniel Shead <nathanieloshead@gmail.com>
PR c++/124478
* cp-tree.h (lazily_declare_fn): Make return type void.
* method.cc (is_lazy_special_member): New function.
(implicitly_declare_fn): Bail early if we lazy loaded the member
we're trying to declare.
(lazily_declare_fn): Likewise.
2026-03-13 Jakub Jelinek <jakub@redhat.com>
* Make-lang.in (check-c++-all): Also test c++26.
2026-03-13 Jakub Jelinek <jakub@redhat.com>
PR c++/124388
* reflect.cc (eval_display_string_of): Only print <unnmamed bit-field>
for DECL_UNNAMED_BIT_FIELD, for anon union print <anonymous union>,
otherwise print <unnamed member>.
2026-03-12 Nathaniel Shead <nathanieloshead@gmail.com>
Thomas Berger <loki+gcc@loki.codes>
PR c++/124200
* name-lookup.h (walk_namespace_bindings): Declare.
* name-lookup.cc (walk_namespace_bindings): New function.
* reflect.cc (namespace_members_of): Use it.
2026-03-12 Nathaniel Shead <nathanieloshead@gmail.com>
PR c++/124309
* module.cc (enum module_directness): Fix inconsistent
capitalisation.
(module_state::read_imports): Reparent module locations newly
seen as direct via partition.
2026-03-12 Marek Polacek <polacek@redhat.com>
PR c++/124440
* parser.cc (cp_parser_postfix_dot_deref_expression): Pass
parser->scope to adjust_result_of_qualified_name_lookup even
when splice_p. Assign the result of
adjust_result_of_qualified_name_lookup to name.
* pt.cc (tsubst_expr): Call adjust_result_of_qualified_name_lookup
for BASELINKs in splice-expressions.
* search.cc (adjust_result_of_qualified_name_lookup): Return early
if decl is not a BASELINK. If qualifying_scope is null, use decl's
binfo. Set BASELINK_QUALIFIED_P only if qualifying_scope wasn't
null.
2026-03-12 Nathaniel Shead <nathanieloshead@gmail.com>
PR c++/124459
* module.cc (module_state::read_initial): Move
read_diagnostic_classification after read_macro_maps.
2026-03-12 Nathaniel Shead <nathanieloshead@gmail.com>
PR c++/124311
* module.cc (trees_in::key_mergeable): Check DECL_DEFAULTED_FN
instead of DECL_ARTIFICIAL.
2026-03-12 Nathaniel Shead <nathanieloshead@gmail.com>
* decl.cc (start_decl): Check module_may_redeclare for members.
(grokfndecl): Likewise.
2026-03-12 Nathaniel Shead <nathanieloshead@gmail.com>
* semantics.cc (begin_class_definition): Move
module_may_redeclare check to...
* parser.cc (cp_parser_class_head): ...here.
2026-03-12 Nathaniel Shead <nathanieloshead@gmail.com>
PR c++/124390
* module.cc (depset::hash::add_binding_entity): Don't create
bindings for hidden friends.
2026-03-12 Jakub Jelinek <jakub@redhat.com>
* reflect.cc (check_out_of_consteval_use_r): Don't walk BLOCK
subtrees.
2026-03-12 Jakub Jelinek <jakub@redhat.com>
* parser.cc (cp_parser_omp_taskwait): Set TREE_TYPE of OMP_TASK
to void_type_node rather than void_node.
(cp_parser_omp_dispatch): Likewise.
2026-03-12 Jakub Jelinek <jakub@redhat.com>
PR c++/124425
* reflect.cc (get_range_elts): Handle proxy iterators. Call
fold_build_cleanup_point_expr on both deref and inc.
2026-03-12 Nathaniel Shead <nathanieloshead@gmail.com>
PR c++/124431
* module.cc (trees_in::key_mergeable): Allow merging members of
template specialisations.
2026-03-12 Marek Polacek <polacek@redhat.com>
PR c++/124397
* pt.cc (tsubst_lambda_expr): Don't override complain when emitting
diagnostics.
2026-03-11 Marek Polacek <polacek@redhat.com>
PR c++/120285
* init.cc (build_vec_init): Only build up a CONSTRUCTOR for
arrays, otherwise use a TREE_LIST like prior to r15-3933.
2026-03-11 Marek Polacek <polacek@redhat.com>
PR c++/124331
* pt.cc (tsubst_qualified_id): New name_lookup_p parameter. Don't
call adjust_result_of_qualified_name_lookup and
finish_qualified_id_expr if name_lookup_p is false.
(tsubst_expr) <case REFLECT_EXPR>: Handle SCOPE_REF specially by
calling tsubst_qualified_id with name_lookup_p=false.
2026-03-11 Jakub Jelinek <jakub@redhat.com>
PR c++/124417
* reflect.cc (get_meta_exception_object): Add CTX argument. For
!flag_exceptions emit error unless ctx->quiet, set *non_constant_p
to true and return NULL_TREE instead of throwing an exception.
(throw_exception): Adjust get_meta_exception_object caller.
2026-03-11 Jakub Jelinek <jakub@redhat.com>
PR c++/124404
* constexpr.cc (cxx_eval_constexpr_diag): Call convert_from_reference
on arguments.
2026-03-10 Jakub Jelinek <jakub@redhat.com>
PR c++/124399
* reflect.cc (compare_reflections): For REFLECT_ANNOTATION, compare
TREE_VALUE of lhs and rhs instead of lhs and rhs.
2026-03-10 Jakub Jelinek <jakub@redhat.com>
PR c++/124399
* reflect.cc (eval_annotations_of): Call complete_type on r if it
is a type.
2026-03-07 Jason Merrill <jason@redhat.com>
<mtxn@duck.com>
PR c++/123622
* module.cc (preprocess_module): Check deps.missing_files.
2026-03-06 Patrick Palka <ppalka@redhat.com>
PR c++/124297
* mangle.cc (write_template_param_decl) <case PARM_DECL>:
Strip fold-expression before calling write_type_constraint.
2026-03-05 Jakub Jelinek <jakub@redhat.com>
PR c++/124145
* constexpr.cc (cxx_eval_constant_expression) <case TARGET_EXPR>: Move
ctx->save_expr->safe_push (slot) call before if (*jump_target) test.
Use TARGET_EXPR_INITIAL instead of TREE_OPERAND.
2026-03-05 Jakub Jelinek <jakub@redhat.com>
PR c++/123810
* cp-tree.h (TYPE_DECL_FOR_LINKAGE_PURPOSES_P): Define.
(TYPE_DECL_WAS_UNNAMED): Likewise.
(TYPE_WAS_UNNAMED): Also check TYPE_DECL_WAS_UNNAMED.
* decl.cc (start_decl): Use TYPE_DECL_FOR_LINKAGE_PURPOSES_P.
(maybe_diagnose_non_c_class_typedef_for_l): If t == type, use
DECL_SOURCE_LOCATION (orig) instead of
DECL_SOURCE_LOCATION (TYPE_NAME (t)).
(name_unnamed_type): Set TYPE_DECL_FOR_LINKAGE_PURPOSES_P
on decl. For -freflection don't change TYPE_NAME from
orig to decl, but instead change DECL_NAME (orig) to
DECL_NAME (decl) and set TYPE_DECL_FOR_LINKAGE_PURPOSES_P on
orig too.
* decl2.cc (grokfield): Use TYPE_DECL_FOR_LINKAGE_PURPOSES_P.
* name-lookup.cc (fields_linear_search): Ignore
TYPE_DECL_WAS_UNNAMED decls.
(count_class_fields): Likewise.
(member_vec_append_class_fields): Likewise.
(pop_local_binding): Likewise.
* reflect.cc (namespace_members_of): For TYPE_DECL with
TYPE_DECL_FOR_LINKAGE_PURPOSES_P set also append
reflection of strip_typedefs (m).
* class.cc (find_flexarrays): Handle TYPE_DECLs with
TYPE_DECL_WAS_UNNAMED like the ones with IDENTIFIER_ANON_P
name.
2026-03-04 Marek Polacek <polacek@redhat.com>
PR c++/124368
* reflect.cc (eval_extent): Convert the result to size_type_node.
2026-03-04 Marek Polacek <polacek@redhat.com>
PR c++/124229
* pt.cc (in_expansion_stmt_p): New.
(tsubst): When reusing typedefs, do retrieve_local_specialization also
when in_expansion_stmt_p is true.
2026-03-04 Jakub Jelinek <jakub@redhat.com>
PR c++/123866
* reflect.cc (eval_annotations_of): For type aliases look for
annotations in DECL_ATTRIBUTES (TYPE_NAME (r)).
2026-03-03 Jakub Jelinek <jakub@redhat.com>
PR c++/124306
* pt.cc (regenerate_decl_from_template): Mark the old PARM_DECLs
replaced with tsubst_decl result with OLD_PARM_DECL_P flag.
2026-03-03 Marek Polacek <polacek@redhat.com>
PR c++/124324
* reflect.cc (eval_substitute): Call resolve_nondeduced_context.
2026-03-03 Patrick Palka <ppalka@redhat.com>
* constraint.cc (struct sat_entry): New data member inst_entry.
(satisfaction_cache::satisfaction_cache): Initialize inst_entry.
(satisfaction_cache::get): Use it to prefer printing the
instantiated atom in case of constraint recursion.
(satisfy_atom): Set inst_entry of the first cache entry to point
to the second entry.
2026-03-03 Patrick Palka <ppalka@redhat.com>
PR c++/123665
PR c++/123408
* pt.cc (build_extra_args): If TREE_STATIC was set on the
arguments, keep it set.
(add_extra_args): Set TREE_STATIC on the resulting arguments
when substituting templated arguments into a full set of
deferred arguments.
(tsubst_lambda_expr): Always defer templated substitution if
LAMBDA_EXPR_EXTRA_ARGS was set.
2026-03-01 Nathaniel Shead <nathanieloshead@gmail.com>
* constexpr.cc (diagnose_failing_condition): Also decompose
comparisons of reflections.
2026-03-01 Marek Polacek <polacek@redhat.com>
PR c++/123143
* pt.cc (tsubst_expr) <case COMPONENT_REF>: Check identifier_p
before doing lookup for a template function.
2026-03-01 Marek Polacek <polacek@redhat.com>
PR c++/123608
* cp-tree.h (unevaluated_p): Include REFLECT_EXPR.
* reflect.cc (check_out_of_consteval_use_r): Don't give up early
on REFLECT_EXPR_P.
2026-02-26 Marek Polacek <polacek@redhat.com>
PR c++/124204
* reflect.cc (eval_can_substitute): Call convert_from_reference.
2026-02-26 Marek Polacek <polacek@redhat.com>
PR c++/123662
PR c++/123611
* cvt.cc (convert_to_void): Only call check_out_of_consteval_use
when stmts_are_full_exprs_p.
2026-02-26 Marek Polacek <polacek@redhat.com>
Jakub Jelinek <jakub@redhat.com>
PR c++/124215
* reflect.cc (class_members_of): Use TYPE_MAIN_VARIANT of R.
2026-02-25 Marek Polacek <polacek@redhat.com>
* reflect.cc (check_out_of_consteval_use_r): Walk BIND_EXPR_BODY.
For IF_STMT_CONSTEVAL_P, only walk the ELSE_CLAUSE. For
IF_STMT_CONSTEXPR_P, only walk the THEN_ and ELSE_CLAUSE.
2026-02-25 Marek Polacek <polacek@redhat.com>
PR c++/124227
* reflect.cc (consteval_only_p): Handle TREE_VEC.
2026-02-24 Marek Polacek <polacek@redhat.com>
* parser.cc (cp_parser_base_specifier): Use the same error for
a typename in a base-specifier outside of templates and inside.
2026-02-23 Marek Polacek <polacek@redhat.com>
* parser.cc (cp_parser_splice_expression): For dependent splices return
earlier. Refactor. For address_p, build an OFFSET_REF. Don't pass
context to finish_id_expression.
* semantics.cc (finish_id_expression_1): Adjust an assert to also check
flag_reflection.
2026-02-23 Marek Polacek <polacek@redhat.com>
PR c++/124150
* reflect.cc (eval_substitute): Add an OVERLOAD around
a DECL_FUNCTION_TEMPLATE_P.
2026-02-23 Marek Polacek <polacek@redhat.com>
PR c++/123641
* name-lookup.cc: Move STAT_* and MAYBE_STAT_* macros from here to...
* name-lookup.h: ...here.
* reflect.cc (namespace_members_of): Use them. Skip STAT_TYPE_HIDDEN_P.
2026-02-22 Jakub Jelinek <jakub@redhat.com>
PR c++/124173
* pt.cc (convert_nontype_argument): For C++11/C++14 handle
NULLPTR_TYPE_P non-type arguments like TYPE_PTR_P.
2026-02-22 Jakub Jelinek <jakub@redhat.com>
PR c++/124184
* parser.cc (cp_perform_range_for_lookup): If tf_error is
missing, call finish_call_expr after perform_koenig_lookup
calls immediately with tf_any_viable instead of twice, once
with tf_none and then with tf_any_viable.
* pt.cc (finish_expansion_stmt): Remove unneeded parens.
2026-02-22 Valentyn Yukhymenko <valentin.yukhymenko@gmail.com>
PR c++/123642
* typeck.cc (finish_class_member_access_expr): Change context lookup
to handle anon union members.
2026-02-19 Marek Polacek <polacek@redhat.com>
* metafns.gperf: Define METAFN_KIND_ARG.
* metafns.h: Regenerate.
* reflect.cc (process_metafunction): Use METAFN_KIND_ARG.
2026-02-19 Jakub Jelinek <jakub@redhat.com>
* pt.cc (convert_nontype_argument): Clarify return value in function
comment.
2026-02-19 Jakub Jelinek <jakub@redhat.com>
PR c++/124070
* pt.cc (convert_nontype_argument): For NULLPTR_TYPE_P case
if expr is not integer_zerop and is not val_dep_p try harder,
for complain & tf_error use cxx_constant_value and return NULL_TREE
for error_mark_node, without tf_error return NULL_TREE. Similarly
for REFLECTION_TYPE_P case if expr is not REFLECT_EXPR and is not
val_dep_p try harder like for NULLPTR_TYPE_P.
2026-02-19 Jakub Jelinek <jakub@redhat.com>
* cp-tree.h: Implement proposed CWG 3123 resolution.
(enum tsubst_flags): Add tf_any_viable enumerator. Indent all
comments the same.
* call.cc (perform_overload_resolution): For tf_any_viable
return the first candidate instead of doing tourney. Filter out
tf_any_viable flag from add_candidates call.
(build_new_function_call): For tf_any_viable return void_node
if any viable candidates are found rather than build_over_call.
Filter out tf_any_viable flag from resolve_args call.
* parser.cc (cp_perform_range_for_lookup): Pass COMPLAIN to
cp_range_for_member_function calls. If not tf_error, for
successful ADL if one or both of finish_call_expr calls returns
error_mark_node, retry with tf_any_viable. If both begin and
end expressions have a viable candidate or when member lookup
found both begin and end members, return NULL_TREE rather than
error_mark_node even when both *begin and *end are error_mark_node.
(cp_range_for_member_function): Add COMPLAIN argument, pass it
down to finish_class_member_access_expr and finish_call_expr.
* pt.cc (finish_expansion_stmt): Use esk_iterating if
cp_perform_range_for_lookup returned something other than
error_mark_node or if both begin_expr and end_expr are not
error_mark_node.
* semantics.cc (finish_call_expr): Filter out tf_any_viable
flag from all uses of complain except one build_new_function_call
call for the is_overloaded_fn case.
2026-02-18 Marek Polacek <polacek@redhat.com>
PR c++/124096
* semantics.cc (cp_build_bit_cast): Check that neither argument is
consteval-only.
2026-02-17 Patrick Palka <ppalka@redhat.com>
PR c++/121822
* cvt.cc (convert_to_void): Don't evaluate a concept-id
in an unevaluated context.
2026-02-17 Patrick Palka <ppalka@redhat.com>
PR c++/122318
PR c++/101670
* pt.cc (unify) <default>: Accept LAMBDA_EXPR.
2026-02-17 Jakub Jelinek <jakub@redhat.com>
* cp-tree.h (enum cp_built_in_function): Add
CP_BUILT_IN_CONSTEXPR_DIAG.
(cexpr_str::cexpr_str): Add new default ctor.
(cexpr_str::type_check): Add optional allow_char8_t arg.
(cexpr_str::extract): Add optional ctx, non_constant_p, overflow_p
and jump_target arguments.
* cp-gimplify.cc (cp_gimplify_expr): Throw away
__builtin_constexpr_diag calls after gimplification of
their arguments.
* decl.cc (cxx_init_decl_processing): Create __builtin_constexpr_diag
FE builtin decl.
* constexpr.cc (call_stack, call_stack_tick, last_cx_error_tick):
Moved earlier.
(cxx_eval_constexpr_diag): New function.
(cxx_eval_builtin_function_call): Handle __builtin_constexpr_diag
calls.
* tree.cc (builtin_valid_in_constant_expr_p): Return true for
CP_BUILT_IN_CONSTEXPR_DIAG.
* semantics.cc (cexpr_str::type_check): Add allow_char8_t argument,
if true, allow data to return const char8_t *.
(cexpr_str::extract): Add ctx, non_constant_p, overflow_p and
jump_target arguments, if they are non-NULL, evalute expressions
in that context rather than using cxx_constant_value and translate
back to SOURCE_CHARSET even if message_data or message_sz are NULL.
2026-02-17 Jakub Jelinek <jakub@redhat.com>
PR c++/120685
* typeck2.cc (build_functional_cast_1): For C++23 auto(x)
without tf_warning or tf_error return error_mark_node instead of
emitting pedwarn and handling it.
* semantics.cc (finish_compound_literal): Similarly for C++26
auto{x}.
2026-02-17 Jakub Jelinek <jakub@redhat.com>
PR c++/123612
* cp-tree.h (DECL_HAS_DEFAULT_ARGUMENT_P): Define.
* decl.cc (merge_decl_arguments): For -freflection and
extern_alias set DECL_HAS_DEFAULT_ARGUMENT_P (oldarg)
if newdecl has a default argument for that parameter,
otherwise propagate the flag.
* reflect.cc (get_reflection): For DECL_LOCAL_DECL_P
use its DECL_LOCAL_DECL_ALIAS.
(eval_has_default_argument): Return boolean_true_node
also if DECL_HAS_DEFAULT_ARGUMENT_P flag is set.
2026-02-17 David Malcolm <dmalcolm@redhat.com>
PR diagnostics/122001
* error.cc (auto_context_line::auto_context_line): Initialize
m_nesting_level and m_location_printed. Update the condition
for printing location in ctor to also do it at top-level
nesting level. Record into m_location_printed if we did
print the location.
(auto_context_line::~auto_context_line): Don't call print_location
if we already printed it in the ctor.
(auto_context_line::m_nesting_level): New field.
(auto_context_line::m_location_printed): New field.
2026-02-15 Patrick Palka <ppalka@redhat.com>
PR c++/121500
* cp-gimplify.cc (cp_genericize_r): Walk DECL_VALUE_EXPR within
an xobj lambda.
2026-02-13 Marek Polacek <polacek@redhat.com>
* cp-tree.h (inform_tree_category): Declare.
* error.cc (inform_tree_category): New.
* parser.cc (cp_parser_splice_specifier): Use OVL_FIRST when checking
for TEMPLATE_DECL.
(cp_parser_splice_type_specifier): Reword an error message. Call
inform_tree_category.
(cp_parser_splice_expression): Check check_splice_expr earlier. Reword
error messages. Call inform_tree_category. Turn an error into an
assert. Use missing_template_diag instead of giving an error about
a missing 'template' keyword.
(cp_parser_splice_scope_specifier): Reword an error message. Call
inform_tree_category.
(missing_template_diag): Forward declare. Drop "enum" in a parameter.
* reflect.cc (check_splice_expr): Reword error messages. Call
inform_tree_category.
2026-02-13 Jakub Jelinek <jakub@redhat.com>
PR c++/124012
* reflect.cc (check_out_of_consteval_use_r): New function.
(check_out_of_consteval_use): Use it instead of lambda. Don't ignore
constexpr/constinit vars in the walker and walk DECL_VALUE_EXPR of
vars which have it. Ignore expr equal to constexpr VAR_DECL. In
diagnostics only complain about missing constexpr on VAR_DECLs without
that flag and never suggest constinit. Remove constinit traces from
function comment.
2026-02-13 Dhruv Chawla <dhruvc@nvidia.com>
* Make-lang.in (cc1plus.fda): Likewise.
2026-02-12 Patrick Palka <ppalka@redhat.com>
* constraint.cc (finish_shorthand_constraint): Add is_non_type
parameter. Handle constrained auto NTTPs.
* cp-tree.h (copy_template_args): Declare.
(expand_template_argument_pack): Declare.
(finish_shorthand_constraint): Adjust declaration.
* mangle.cc (write_template_param_decl): Obtain constraints of
an auto NTTP through TEMPLATE_PARM_CONSTRAINTS instead of
PLACEHOLDER_TYPE_CONSTRAINTS.
* parser.cc (cp_parser_constrained_type_template_parm): Inline
into its only caller and remove.
(cp_parser_constrained_non_type_template_parm): Likewise.
(finish_constrained_parameter): Simplify after the above. Replace
the type of an ordinary constrained auto NTTP with a
non-constrained one and set TEMPLATE_PARM_CONSTRAINTS for it.
(cp_parser_template_parameter): Dispatch to
finish_constrained_parameter for a constrained auto NTTP.
* pt.cc (process_template_parm): Pass is_non_type to
finish_shorthand_constraint. Use TEMPLATE_PARM_CONSTRAINTS
instead of TREE_TYPE for clarity.
(expand_template_argument_pack): Remove forward declaration.
(copy_template_args): Likewise.
(make_constrained_placeholder_type): Return the type not the
TYPE_NAME for consistency with make_auto_1 etc.
(do_auto_deduction): Assert we no longer see simple constrained
autos during coercion/deduction.
2026-02-12 Patrick Palka <ppalka@redhat.com>
* cp-gimplify.cc (cp_gimplify_expr) <case CALL_EXPR>: Adjust
r16-7487 comment.
2026-02-12 Patrick Palka <ppalka@redhat.com>
PR c++/123989
* cp-gimplify.cc (cp_gimplify_expr) <case CALL_EXPR>: Evaluate
the object argument of an xobj memfn call first too.
2026-02-12 Marek Polacek <polacek@redhat.com>
PR c++/124045
* parser.cc (cp_parser_parse_and_diagnose_invalid_type_name): Also
abort the tentative parse when id is error_mark_node.
(cp_parser_simple_declaration): Set CP_PARSER_FLAGS_TYPENAME_OPTIONAL
when in a namespace scope.
(cp_parser_single_declaration): Use cp_parser_flags instead of int.
2026-02-12 Patrick Palka <ppalka@redhat.com>
PR c++/98939
PR libstdc++/119745
* class.cc (object_parms_correspond): Allow differing
FUNCTION_REF_QUALIFIED in C++20.
2026-02-11 Boris Staletic <boris.staletic@protonmail.com>
PR c++/123660
PR c++/123661
* pt.cc (tsubst_splice_expr): Handle pointers to non-static members
from splice expressions
2026-02-10 Marek Polacek <polacek@redhat.com>
* parser.cc (struct saved_token_sentinel): Save input_location.
(saved_token_sentinel::rollback): Restore input_location.
(cp_parser_splice_spec_is_nns_p): Use saved_token_sentinel. Refactor.
2026-02-10 Patrick Palka <ppalka@redhat.com>
PR c++/122621
* pt.cc (tsubst_pack_expansion): Use tf_partial instead of
tf_none, except when substituting outer (non-dependent) template
arguments.
2026-02-09 Jakub Jelinek <jakub@redhat.com>
PR c++/123984
* reflect.cc (eval_define_aggregate): Set TYPE_BEING_DEFINED on type
after pushclass, call build_self_reference, remove assertion that
TYPE_FIELDS (type) is NULL and instead set fields to
TYPE_FIELDS (type).
2026-02-09 Jakub Jelinek <jakub@redhat.com>
PR c++/123889
* constexpr.cc (explain_invalid_constexpr_fn): Diagnose
NULL or error_mark_node massaged on non-constructor.
2026-02-08 Nathaniel Shead <nathanieloshead@gmail.com>
PR c++/123738
* module.cc (preprocess_module): Complain for any non-imported
module declaration in a module purview.
2026-02-08 Marek Polacek <polacek@redhat.com>
PR c++/123823
PR c++/123640
* parser.cc (cp_parser_splice_specifier): New typename_p parameter.
Use cp_parser_nth_token_starts_template_argument_list_p instead of
checking CPP_LESS. Check for typename/template/TEMPLATE_DECL before
parsing a template-id.
(cp_parser_splice_type_specifier): Adjust the call to
cp_parser_splice_specifier.
(cp_parser_splice_expression): Don't detect unparenthesized splice
expressions here. Adjust the call to cp_parser_splice_specifier.
(cp_parser_splice_scope_specifier): Adjust the call to
cp_parser_splice_specifier.
(cp_parser_skip_entire_splice_expr): New, broken out of...
(cp_parser_splice_spec_is_nns_p): ...this.
(cp_parser_template_id): Call pop_deferring_access_checks.
(cp_parser_template_argument): Detect unparenthesized splice
expressions here.
2026-02-07 Jakub Jelinek <jakub@redhat.com>
PR c++/123659
* tree.cc (cp_walk_subtrees): Handle SPLICE_SCOPE.
2026-02-07 Jakub Jelinek <jakub@redhat.com>
PR c++/123752
* pt.cc (tsubst_splice_expr): Return error_mark_node if
splice returned it.
2026-02-06 Torbjörn SVENSSON <torbjorn.svensson@foss.st.com>
PR middle-end/123892
* call.cc: Replace CONST_CAST with const_cast<>.
* parser.cc: Likewise.
2026-02-06 Torbjörn SVENSSON <torbjorn.svensson@foss.st.com>
PR middle-end/123892
* call.cc: Replace CONST_CAST_TREE with const_cast<tree>.
* constraint.cc: Likewise.
* cp-lang.cc: Likewise.
* cp-tree.h: Likewise.
* cp-objcp-common.cc: Likewise.
* decl.cc: Likewise.
* init.cc: Likewise.
* pt.cc: Likewise.
* reflect.cc: Likewise.
* tree.cc: Likewise.
* typeck.cc: Likewise.
* typeck2.cc: Likewise.
2026-02-05 Michal Jires <mjires@suse.cz>
PR testsuite/123559
* decl.cc (wrapup_namespace_globals): Check and suppress OPT_Wunused.
* semantics.cc (finish_asm_stmt): Suppress OPT_Wunused.
2026-02-05 Marek Polacek <polacek@redhat.com>
PR c++/123934
* reflect.cc (type_of): For FUNCTION_DECLs, use static_fn_type.
2026-02-05 Patrick Palka <ppalka@redhat.com>
PR c++/122169
* pt.cc (tsubst_pack_index): Propagate cv-qualifiers of
PACK_INDEX_TYPE.
2026-02-05 Jakub Jelinek <jakub@redhat.com>
Revert:
2026-02-05 Jakub Jelinek <jakub@redhat.com>
PR c/101312
* cp-tree.h (cxx_build_lang_qualified_type): Declare.
* cp-objcp-common.h (LANG_HOOKS_COPY_LANG_QUALIFIERS): Remove.
(LANG_HOOKS_BUILD_LANG_QUALIFIED_TYPE): Define.
* tree.cc (cxx_build_lang_qualified_type): New function.
2026-02-04 Jakub Jelinek <jakub@redhat.com>
PR c++/123913
PR c++/123964
* reflect.cc (eval_parameters_of): Fix up handling of function
types.
2026-02-04 Jakub Jelinek <jakub@redhat.com>
PR c++/123611
* pt.cc (finish_expansion_stmt): Temporarily enable
in_immediate_context () for the iterating expansion stmt N
computation.
2026-02-03 Marek Polacek <polacek@redhat.com>
* constexpr.cc (is_std_allocator): Don't check for __new_allocator.
(is_std_allocator_allocate): Make static.
* cp-tree.h (is_std_allocator_allocate): Remove declaration.
* reflect.cc (check_out_of_consteval_use): Don't call
is_std_allocator_allocate.
(check_consteval_only_fn): Likewise.
2026-02-03 Marek Polacek <polacek@redhat.com>
* reflect.cc (compare_reflections): Handle comparing annotations
and types specially, use cp_tree_equal for the rest.
* tree.cc (cp_tree_equal) <case NAMESPACE_DECL>: New.
2026-02-03 Jakub Jelinek <jakub@redhat.com>
PR c++/123920
* reflect.cc (eval_data_member_spec): Break out of the loop
if value is integer_zerop even in the field
&& TREE_CODE (field) != RANGE_EXPR case and use a single
test for integer_zerop (value) in the whole loop.
2026-02-03 Jakub Jelinek <jakub@redhat.com>
PR c++/123918
* semantics.cc (cexpr_str::extract): Bypass cpp_translate_string
for len == 0.
2026-02-02 Marek Polacek <polacek@redhat.com>
Boris Staletic <boris.staletic@protonmail.com>
PR c++/123695
* reflect.cc (eval_object_of): Check type before TYPE_REF_P.
2026-02-02 Marek Polacek <polacek@redhat.com>
PR c++/123614
* cvt.cc (cp_fold_convert): Avoid wrapping a REFLECT_EXPR in NOP_EXPR.
2026-02-01 Nathaniel Shead <nathanieloshead@gmail.com>
PR c++/121832
* parser.cc (cp_parser_explicit_template_declaration): Check for
null.
2026-01-31 Nathaniel Shead <nathanieloshead@gmail.com>
PR c++/123557
PR c++/123738
* cp-gimplify.cc (cp_fold_maybe_rvalue): Call
cp_fold_non_odr_use_1 before recursing cp_fold.
(cp_fold): Pass op0 to cp_fold_non_odr_use_1 when folding a
reference. Reapply set_target_expr_eliding on the initializing
expression of an INIT_EXPR.
2026-01-31 Jakub Jelinek <jakub@redhat.com>
PR c++/123825
* cp-tree.h (merge_decl_arguments): Declare.
* decl.cc (duplicate_decls): Outline DECL_ARGUMENTS handling
into ...
(merge_decl_arguments): ... new function.
* name-lookup.cc (push_local_extern_decl_alias): Call
merge_decl_arguments. Don't copy just the first PARM_DECL when
creating a new alias FUNCTION_DECL.
2026-01-31 Jason Merrill <jason@redhat.com>
Nathaniel Shead <nathanieloshead@gmail.com>
PR c++/122785
* decl.cc (maybe_commonize_var): Don't check consteval_only_p.
(make_rtl_for_nonlocal_decl): Undo make_decl_one_only for
consteval-only variables.
2026-01-30 Patrick Palka <ppalka@redhat.com>
PR c++/123845
PR libstdc++/114865
* constexpr.cc (build_data_member_initialization): Remove
C++11-specific recognition of MODIFY_EXPR.
(check_constexpr_ctor_body): Relax error diagnostic to a
pedwarn and don't clear DECL_DECLARED_CONSTEXPR_P upon
error. Return true if complaining.
2026-01-30 Marek Polacek <polacek@redhat.com>
* reflect.cc (eval_define_aggregate): Also give an error when
TYPE_BEING_DEFINED is true for the first argument. Remove code
that did the same.
2026-01-30 Marek Polacek <polacek@redhat.com>
* reflect.cc (eval_can_substitute): Check undeduced_auto_decl after
resolve_nondeduced_context_or_error.
2026-01-29 Marek Polacek <polacek@redhat.com>
* reflect.cc (eval_has_template_arguments): Return immediately after
checking alias_template_specialization_p.
2026-01-29 Marek Polacek <polacek@redhat.com>
* reflect.cc (eval_type_trait): Assert that finish_trait_expr didn't
return error_mark_node.
2026-01-29 Marek Polacek <polacek@redhat.com>
* reflect.cc (class_members_of): Adjust comment.
(splice): Give an error if the expression doesn't evaluate to
a REFLECT_EXPR_P.
2026-01-29 Jakub Jelinek <jakub@redhat.com>
PR c++/123866
* reflect.cc (eval_annotations_of): Use maybe_get_first_fn.
2026-01-29 Jakub Jelinek <jakub@redhat.com>
* cp-tree.h (build_range_temp): Implement CWG3131 - Value
categories and types for the range in iterable expansion statements.
Add bool argument defaulted to false.
* parser.cc (build_range_temp): Add expansion_stmt_p argument,
if true build const decltype(auto) __for_range = range_expr instead of
auto &&__for_range = range_expr.
(cp_build_range_for_decls): For expansion stmts build __for_range as
static constexpr decltype(auto) __for_range = (range_expr);
rather than static constexpr auto &&__for_range = range_expr;.
2026-01-28 Andrew Pinski <andrew.pinski@oss.qualcomm.com>
PR c++/102846
PR c/102846
* name-lookup.cc (lookup_name_fuzzy): Lookup function-like macro and
notify of misuse there.
2026-01-28 Jakub Jelinek <jakub@redhat.com>
PR c++/102613
* parser.cc: Implement C++23 P2246R1 - Character encoding of
diagnostic text.
(cp_parser_parenthesized_expression_list): For std attribute
argument where the first argument is CPP_STRING, ensure the
string is not translated.
* semantics.cc: Include c-family/c-pragma.h.
(cexpr_str::extract): Use cpp_translate_string to translate
string from ordinary literal encoding to SOURCE_CHARSET.
2026-01-28 Jakub Jelinek <jakub@redhat.com>
* pt.cc (finish_expansion_stmt): Implement part of CWG3044.
Add to begin decltype(begin - begin){i} with std::ptrdiff_t
i instead of just i.
2026-01-28 Jakub Jelinek <jakub@redhat.com>
PR c/101312
* cp-tree.h (cxx_build_lang_qualified_type): Declare.
* cp-objcp-common.h (LANG_HOOKS_COPY_LANG_QUALIFIERS): Remove.
(LANG_HOOKS_BUILD_LANG_QUALIFIED_TYPE): Define.
* tree.cc (cxx_build_lang_qualified_type): New function.
2026-01-28 Alex Yesmanchyk <aliaksandr.yesmanchyk@gmail.com>
Jason Merrill <jason@redhat.com>
PR c++/38612
* typeck2.cc (build_m_component_ref): Improve class mismatch
diagnostic.
2026-01-28 vspefs <vspefs@protonmail.com>
* module.cc (trees_out::type_node): Add case for SPLICE_SCOPE.
(trees_in::tree_node): Add case for SPLICE_SCOPE.
2026-01-28 Lucas Chollet <lucas.chollet@free.fr>
Jason Merrill <jason@redhat.com>
PR c++/114450
* lambda.cc (generic_lambda_fn_p): Handle null argument.
* semantics.cc (finish_id_expression_1): Check for generic lambda.
2026-01-28 Johannes Altmanninger <aclopte@gmail.com>
Jason Merrill <jason@redhat.com>
* typeck.cc (cp_build_array_ref): Suppress unused-value
warning for implicit comma expression.
2026-01-28 Nina Ranns <dinka.ranns@gmail.com>
Iain Sandoe <iain@sandoe.co.uk>
Ville Voutilainen <ville.voutilainen@gmail.com>
* call.cc (build_cxx_call): Where enabled, wrap calls to
functions with contract specifiers.
* contracts.cc (enum contract_match_kind): Move to contracts
header.
(build_contract_condition_function): Copy caller-side wrapper
state.
(set_contract_wrapper_function, get_contract_wrapper_function,
get_orig_func_for_wrapper, contracts_fixup_cdtorname,
build_contract_wrapper_function,
get_or_create_contract_wrapper_function): New.
(start_function_contracts): Handle caller-side wrappers.
(maybe_apply_function_contracts): Likewise.
(copy_and_remap_contracts): Likewise.
(should_contract_wrap_call, maybe_contract_wrap_call,
define_contract_wrapper_func, emit_contract_wrapper_func): New.
(finish_function_contracts): Handle caller-side wrappers.
(get_src_loc_impl_ptr): Likewise.
* contracts.h (DECL_IS_WRAPPER_FN_P): New.
(enum contract_match_kind): Moved from contracts.cc.
(copy_and_remap_contracts): Allow selection on the specific
contract kind.
(maybe_contract_wrap_call, emit_contract_wrapper_func): New.
(set_decl_contracts): Delete dead code.
* cp-tree.h (struct lang_decl_fn): Add wrapper function bit.
(DECL_CONTRACT_WRAPPER): New.
* decl2.cc (c_parse_final_cleanups): Emit wrappers.
2026-01-28 Nina Ranns <dinka.ranns@gmail.com>
Iain Sandoe <iain@sandoe.co.uk>
Ville Voutilainen <ville.voutilainen@gmail.com>
* contracts.cc (handle_contracts_p): Check that we are
handling an original function, not an outlined check.
(set_precondition_function, set_postcondition_function,
get_orig_for_outlined, contracts_fixup_name,
build_contract_condition_function,
build_precondition_function, build_postcondition_function,
build_contract_function_decls): New.
(start_function_contracts): Update for the case that we
outline the contract checks.
(build_arg_list, build_thunk_like_call,
add_pre_condition_fn_call,
get_postcondition_result_parameter,
add_post_condition_fn_call): New.
(apply_preconditions): Allow outlined checks.
(apply_postconditions): Likewise.
(get_precondition_function, get_postcondition_function,
set_contract_functions, remap_and_emit_conditions,
finish_function_contracts): New.
(get_src_loc_impl_ptr): Handle outlined checks.
(build_contract_check): Likewise.
* contracts.h (DECL_PRE_FN, DECL_POST_FN,
DECL_IS_PRE_FN_P, DECL_IS_POST_FN_P,
get_precondition_function, get_postcondition_function,
get_orig_for_outlined, finish_function_contracts,
set_contract_functions): New.
* cp-tree.h (enum lang_contract_helper): New.
(struct lang_decl_fn): Add contract helper enum.
(CONTRACT_HELPER): New.
(mangle_decl_string): New.
* decl.cc (finish_function): Emit outlined checks when
in use.
* module.cc (trees_out::fn_parms_init): Stream pre and post
outlined checks.
(trees_in::fn_parms_init): Reload pre and post outlined checks.
(check_mergeable_decl): Handle pre and post outlined functions.
(module_state_config::get_dialect): Add contracts dialect.
2026-01-28 Nina Ranns <dinka.ranns@gmail.com>
Iain Sandoe <iain@sandoe.co.uk>
* contracts.cc (view_as_const, constify_contract_access,
set_parm_used_in_post, check_param_in_postcondition,
parm_used_in_post_p, check_postconditions_in_redecl): New.
(check_redecl_contract): Handle constification.
* contracts.h (constify_contract_access, view_as_const,
contract_const_wrapper_p, strip_contract_const_wrapper): New.
* cp-tree.h: Update tree flag usage comment.
* lambda.cc (build_capture_proxy): Handle constification.
* parser.cc (cp_parser_late_contract_condition, cp_parser_contract_assert,
cp_parser_function_contract_specifier): Likewise.
* pt.cc (tsubst_function_decl, tsubst_expr): Likewise.
* semantics.cc (finish_id_expression_1, finish_decltype_type): Likewise.
2026-01-28 Nina Ranns <dinka.ranns@gmail.com>
Iain Sandoe <iain@sandoe.co.uk>
* contracts.cc (__tu_terminate_wrapper): New.
(build_terminate_wrapper): New.
(declare_terminate_wrapper): New.
(maybe_emit_violation_handler_wrappers): Build a no-ipa wrapper
for terminating contract violations if required.
2026-01-28 Iain Sandoe <iain@sandoe.co.uk>
Nina Ranns <dinka.ranns@gmail.com>
Ville Voutilainen <ville.voutilainen@gmail.com>
* class.cc (check_for_override): Diagnose attemtps to add contracts to
virtual functions.
* constexpr.cc (cxx_eval_builtin_function_call): Handle
observable_checkpoints emitted for contracts.
(cxx_eval_constant_expression): Check we do not see contract assertions
here...
(potential_constant_expression_1): ... but that we do here.
* contracts.cc: Implement base C++26 P2600R14 contracts.
* contracts.h: Likewise.
* cp-gimplify.cc (cp_genericize_r): Lower contract assertions to control
flow and calls (where required) to the violation handler.
(fold_builtin_source_location): Use revised source_location impl.
constructor.
(build_source_location_impl): Split out the core of the constructor of
source_location so that it can be re-used from the contracts code.
* cp-tree.def (ASSERTION_STMT, PRECONDITION_STMT,
POSTCONDITION_STMT): Revise to allow space for specifying a semantic,
an assertion kind, and (where required) a source location.
* cp-tree.h (enum cp_tree_index, builtin_contract_violation_type): Add
the contract violation object type.
(struct saved_scope): Add a contracts class pointer.
(processing_postcondition, contract_class_ptr): New.
(struct cp_declarator): Add contract_specifiers.
(build_call_a_1): New.
(build_source_location_impl): New.
* decl.cc (duplicate_decls): Check function contract specifiers on
redeclarations. Handle contract specifiers on instantiations.
(cxx_init_decl_processing): Initialise the terminate function since
this can be called from contracts even when exception processing is
disabled. Build the contract violation object layout.
(start_decl): Handle checking contract postcondition identifiers.
(grokfndecl): Handle function contract specifiers.
(grokdeclarator): Likewise.
(start_preparsed_function): Start function contracts where needed.
(finish_function): Emit contract specifier AST corresponding to the
checked contracts.
* decl2.cc (c_parse_final_cleanups): Emit helpers for contract
violation handler calls.
* lex.cc (cxx_init): Add keyword warning for contract_assert.
* parser.cc (make_call_declarator): Add contract specifiers.
(unparsed_contracts): New.
(cp_parser_lambda_introducer): Allow contract specifier lambdas to have
a capture default.
(cp_parser_lambda_declarator_opt): Parse function contract specifiers.
(make_dummy_lambda_op): Account for contract specifiers in declarator.
(cp_parser_lambda_body): We have to ensure that deferred contracts are
parsed before we finish the lambda.
(cp_parser_statement): Handle contract_assert and diagnostics for
misplaced pre and post conditions.
(attr_chainon): Make this defensive against being passed a missing
attribute list.
(cp_parser_using_directive): Use attr_chainon instead of chainon.
(contract_attribute_p): New.
(cp_parser_init_declarator): Handle contract specifier names in
attributes.
(cp_parser_direct_declarator): Rename attrs to std_attrs for these.
(cp_parser_type_specifier_seq): Allow for function contract specifiers.
(cp_parser_class_specifier): Handle deferred parsing for function
contract specifiers
(cp_next_tokens_can_be_contract_attribute_p): True if this can be
a function contract specifier (which appear in the same position
as the attribute variant).
(cp_next_tokens_can_be_std_attribute_p): Allow for contracts.
(cp_nth_tokens_can_be_std_attribute_p): Likewise.
(cp_next_tokens_can_be_attribute_p): Likewise.
(cp_parser_late_contract_condition, cp_parser_late_contracts,
cp_parser_contract_assert, cp_parser_function_contract_specifier,
cp_parser_function_contract_specifier_seq): New.
(cp_parser_skip_std_attribute_spec_seq): Handle contracts case.
(cp_parser_skip_attributes_opt): Likewise.
(cp_parser_save_default_args): Handle unparsed contract specs.
* pt.cc (check_explicit_specialization): Handle removing contract
specifiers from instances.
(tsubst_contract, tsubst_contract_attribute,
tsubst_contract_attributes): New.
(tsubst_function_decl): Set contract specs. on substituted func.
(tsubst_stmt): Handle contract_assert.
(tsubst_expr): Allow for uses of postcondition uses of parm names.
(regenerate_decl_from_template): Handle function contract specs.
* semantics.cc (set_one_cleanup_loc): Add a location to
postcondition specifiers.
(finish_non_static_data_member): Diagnose bad uses of members
in contract specifiers.
(finish_this_expr): Diagnose invalid use of this in contract
specifiers.
(process_outer_var_ref): Allow use of params in contract specs.
(finish_id_expression_1): Likewise.
(apply_deduced_return_type): Maybe update postconditions when
the return type is changed.
* tree.cc (cp_tree_equal): Handle special cases when comparing
contracts.
2026-01-28 Iain Sandoe <iain@sandoe.co.uk>
* cp-tree.h (processing_contract_condition): New.
* name-lookup.cc (cp_binding_level_descriptor): Add contract scope.
(begin_scope): Likewise.
* name-lookup.h (enum scope_kind): Add sk_contract.
2026-01-28 Iain Sandoe <iain@sandoe.co.uk>
Nina Ranns <dinka.ranns@gmail.com>
* contracts.cc: Remove all C++2a contracts code.
* contracts.h: Likewise.
* coroutines.cc (coro_build_actor_or_destroy_function): Remove
unused contracts references.
* cp-gimplify.cc (cp_genericize_r): Remove C++2a contracts
implementation.
* cp-objcp-common.cc (cp_handle_option): Likewise.
* cp-tree.h: Remove C++2a contracts code.
* decl.cc: Likewise.
* decl2.cc: Likewise.
* mangle.cc: Likewise.
* module.cc: Likewise.
* parser.cc: Likewise.
* pt.cc: Likewise.
* search.cc: Likewise.
* semantics.cc: Likewise.
* tree.cc: Likewise.
* constexpr.cc: Likewise.
2026-01-27 Nathaniel Shead <nathanieloshead@gmail.com>
PR c++/122609
PR c++/101140
* cp-tree.h (visible_from_instantiation_origination): Declare.
* module.cc: (orig_decl_for_instantiation): New function.
(path_of_instantiation): Use it.
(visible_from_instantiation_origination): New function.
* name-lookup.cc (name_lookup::search_namespace_only): Also find
names visible at the point the instantiation originated.
2026-01-27 Jakub Jelinek <jakub@redhat.com>
* cp-gimplify.cc (immediate_escalating_function_p): Implement
CWG3153 - Immediate-escalating defaulted comparison. Don't check
special_memfn_p for sfk_none for DECL_DEFAULTED_FNs.
* decl.cc (grokfndecl): Similarly for initialized == SD_DEFAULTED
fns.
2026-01-27 Jakub Jelinek <jakub@redhat.com>
PR c++/123404
* decl.cc (grokfndecl): Replace bool deletedp argument with
int initialized. Test initialized == SD_DELETED instead of deletedp.
Don't call check_consteval_only_fn for defaulted special member fns.
(grokdeclarator): Pass initialized rather than
initialized == SD_DELETED to grokfndecl.
2026-01-27 Jakub Jelinek <jakub@redhat.com>
PR c++/123578
* tree.cc (cxx_printable_name_internal): Call lang_decl_name before
finding the slot to cache it in and repeat search in the cache
after the call.
2026-01-27 Patrick Palka <ppalka@redhat.com>
PR c++/123676
* pt.cc (tsubst_pack_expansion): Relax unsubsituted_packs
assert to allow !processing_template_decl when args is
NULL_TREE.
2026-01-27 Patrick Palka <ppalka@redhat.com>
PR c++/122494
PR c++/123814
* constexpr.cc (cxx_eval_outermost_constant_expr): Clear
uid_sensitive_constexpr_evaluation_value when mce_true.
2026-01-26 Marek Polacek <polacek@redhat.com>
* reflect.cc (check_splice_expr): Check if process_outer_var_ref
returned a capture, and give an error if so.
2026-01-26 Marek Polacek <polacek@redhat.com>
* parser.cc (cp_parser_type_specifier): Adjust comment.
(cp_parser_type_id_1): Simplify setting of type_alias_p.
Use nullptr instead of NULL.
2026-01-26 Marek Polacek <polacek@redhat.com>
PR c++/123620
* reflect.cc (can_extract_member_or_function_p): Also check
fnptr_conv_p.
(extract_member_or_function): Call perform_implicit_conversion.
2026-01-26 Nathaniel Shead <nathanieloshead@gmail.com>
PR c++/123663
PR c++/123354
* name-lookup.cc (struct local_state_t): New flag has_cfun.
(local_state_t::save_and_clear): Set has_cfun, call
push_function_context iff there's a cfun to save.
(local_state_t::restore): call pop_function_context if
has_cfun is set.
(maybe_push_to_top_level): Delegte push_function_context to
local_state_t::save_and_clear.
(maybe_pop_from_top_level): Delegate pop_function_context to
local_state_t::restore.
2026-01-25 Iain Sandoe <iain@sandoe.co.uk>
* cp-gimplify.cc (cp_genericize_r): Do not mark STATEMENT_LISTs
as visited.
2026-01-24 Jakub Jelinek <jakub@redhat.com>
PR c++/123737
* parser.cc (cp_parser_expression): Don't handle CPP_EMBED just
as the last byte in it if expression has or might have overloaded
type. In that case call build_x_compound_expr for each byte
in CPP_EMBED separately.
2026-01-24 Jakub Jelinek <jakub@redhat.com>
PR c++/123667
* semantics.cc (finish_decltype_type): Allow a structured binding
for ptds.saved to have DECL_HAS_VALUE_EXPR_P cleared, if it is
not within current_function_decl, but in that case assert that
lookup_decomp_type succeeded.
2026-01-24 Jakub Jelinek <jakub@redhat.com>
PR c++/123684
* name-lookup.cc (handle_namespace_attrs): Only handle visibility and
abi_tag attributes in the gnu namespace and deprecated attribute in
the standard or gnu namespaces.
2026-01-23 Marek Polacek <polacek@redhat.com>
* tree.cc (handle_annotation_attribute): Use build_stub_type.
2026-01-23 Jakub Jelinek <jakub@redhat.com>
PR c++/123597
* parser.cc (substitute_in_tree_walker, substitute_in_tree): Don't
consider BIND_EXPRs with !BIND_EXPR_VARS redundant if
processing_template_decl.
2026-01-22 Marek Polacek <polacek@redhat.com>
* reflect.cc (class_members_of): Update a comment to mention
finish_member_declaration.
2026-01-22 Marek Polacek <polacek@redhat.com>
Jason Merrill <jason@redhat.com>
* reflect.cc (type_linkage_name): Rename to...
(reflection_type_linkage_name): ...this.
(eval_has_internal_linkage): Call reflection_type_linkage_name instead
of type_linkage_name.
(eval_has_module_linkage): Likewise.
(eval_has_external_linkage): Likewise.
(eval_has_c_language_linkage): Likewise.
(eval_has_linkage): Likewise.
2026-01-22 Marek Polacek <polacek@redhat.com>
* class.cc (user_provided_p): Return false for a deleted
namespace-scope function.
* reflect.cc (eval_is_user_provided): Don't check
DECL_NAMESPACE_SCOPE_P or DECL_DELETED_FN.
2026-01-21 Marek Polacek <polacek@redhat.com>
* cp-tree.h (maybe_get_first_fn): Declare.
* reflect.cc (maybe_get_reflection_fndecl): Remove.
(eval_is_function): Call maybe_get_first_fn instead of
maybe_get_reflection_fndecl.
(eval_is_function_template): Likewise.
(eval_is_class_member): Likewise.
(eval_is_expected_access): Likewise.
(eval_is_virtual): Likewise.
(eval_is_pure_virtual): Likewise.
(eval_is_override): Likewise.
(eval_is_namespace_member): Likewise.
(eval_is_static_member): Likewise.
(eval_is_deleted): Likewise.
(eval_is_defaulted): Likewise.
(eval_is_user_provided): Likewise.
(eval_is_user_declared): Likewise.
(eval_is_explicit): Likewise.
(eval_has_internal_linkage): Likewise.
(eval_has_module_linkage): Likewise.
(eval_has_external_linkage): Likewise.
(eval_has_c_language_linkage): Likewise.
(eval_has_linkage): Likewise.
(eval_is_operator_function): Likewise.
(eval_is_destructor): Likewise.
(eval_is_conversion_function_template): Likewise.
(eval_is_operator_function_template): Likewise.
(eval_is_constructor_template): Likewise.
(eval_operator_of): Likewise.
(eval_is_noexcept): Likewise.
(eval_has_parent): Likewise.
(eval_parent_of): Likewise.
(eval_parameters_of): Likewise.
(eval_has_identifier): Likewise.
(eval_identifier_of): Likewise.
(eval_is_final): Likewise.
(eval_is_accessible): Likewise.
(compare_reflections): Likewise.
(reflection_mangle_prefix): Likewise.
* tree.cc (maybe_get_fns): Use NULL_TREE instead of NULL.
(maybe_get_first_fn): New.
2026-01-21 Marek Polacek <polacek@redhat.com>
* mangle.cc (is_std_substitution): Return false for any _DECL except
TYPE_DECL and DECL_CLASS_TEMPLATE_P. Verify that we don't return false
for something that used to yield true. Use NULL_TREE instead of NULL.
2026-01-21 Jakub Jelinek <jakub@redhat.com>
PR c++/123692
* class.cc (build_base_path): Don't call resolves_to_fixed_type_p if
uneval.
2026-01-21 Jakub Jelinek <jakub@redhat.com>
PR c++/123677
* constexpr.cc (cxx_eval_store_expression): Only clear
CONSTRUCTOR_ELTS (*valp) if *valp is CONSTRUCTOR.
2026-01-20 Patrick Palka <ppalka@redhat.com>
PR c++/123601
* tree.cc (build_min_non_dep_op_overload): Relax
COMPARISON_CLASS_P assert to accept SPACESHIP_EXPR too.
2026-01-20 Marek Polacek <polacek@redhat.com>
* reflect.cc (get_range_elts): Add comment for TARGET_EXPR stripping.
(get_vector_of_info_elts): Likewise.
2026-01-20 Marek Polacek <polacek@redhat.com>
* decl2.cc (min_vis_expr_r): For _DECLs with no linkage refer to the
linkage of the containing entity that does have a name with linkage.
2026-01-19 Jakub Jelinek <jakub@redhat.com>
* metafns.gperf: Add "" as second operand of 2 static_asserts.
* metafns.h: Regenerate.
2026-01-18 Marek Polacek <polacek@redhat.com>
* reflect.cc (get_reflection): Adjust the error message for the
is_capture_proxy check.
2026-01-18 Marek Polacek <polacek@redhat.com>
* cp-tree.h (direct_base_parent): Rename to...
(direct_base_derived): ...this.
* decl2.cc (min_vis_expr_r): Call direct_base_derived instead of
direct_base_parent.
* pt.cc (iterative_hash_template_arg): Likewise.
* reflect.cc (direct_base_parent_binfo): Rename to...
(direct_base_derived_binfo): ...this.
(direct_base_parent): Rename to...
(direct_base_derived): ...this.
(eval_is_expected_access): Call direct_base_derived_binfo instead
of direct_base_parent_binfo.
(eval_source_location_of): Call direct_base_derived instead of
direct_base_parent.
(eval_parent_of): Likewise.
(eval_offset_of): Likewise.
(eval_display_string_of): Likewise.
(eval_annotations_of): Call direct_base_derived_binfo instead
of direct_base_parent_binfo.
(eval_is_accessible): Call direct_base_derived instead of
direct_base_parent.
2026-01-18 Marek Polacek <polacek@redhat.com>
* reflect.cc (check_splice_expr): Use context_for_name_lookup.
2026-01-18 Simon Martin <simon@nasilyan.com>
PR c++/122391
* tree.cc (decl_linkage): Return lk_none for TYPE_DECLs with
erroneous type.
2026-01-17 Nathaniel Shead <nathanieloshead@gmail.com>
PR c++/123627
* class.cc (finish_struct): Maybe key function-local types.
* module.cc (trees_out::get_merge_kind): Choose whether to use
MK_local_type or MK_keyed for a local type based on if the
immediate context's definition will be streamed.
(trees_in::key_mergeable): Allow key decls on FUNCTION_DECL.
(adjust_key_scope): New function.
(maybe_key_decl): Handle key decls on FUNCTION_DECL; check that
we only key a given decl to a context at most once.
(get_keyed_decl_scope): Support non-lambda decls.
2026-01-16 Marek Polacek <polacek@redhat.com>
* reflect.cc (eval_variable_of): Update comment.
2026-01-16 Jakub Jelinek <jakub@redhat.com>
Peter Damianov <peter0x44@disroot.org>
PR c/123437
* typeck.cc (cp_build_binary_op): Don't use RDIV_EXPR
resultcode if both types are integral, _BitInt or
newly VECTOR_TYPE of ENUMERAL_TYPE.
2026-01-15 Marek Polacek <polacek@redhat.com>
Jakub Jelinek <jakub@redhat.com>
PR c++/120775
PR c++/123081
PR c++/122634
* Make-lang.in: Add cp/reflect.o. Add a rule for cp/metafns.h.
* config-lang.in: Add reflect.cc.
* constexpr.cc (constexpr_global_ctx): Add consteval_block and
metafns_called members. Initialize them.
(cxx_constexpr_quiet_p): New.
(cxx_constexpr_manifestly_const_eval): New.
(cxx_constexpr_caller): New.
(cxx_constexpr_consteval_block): New.
(enum value_cat): Move into cp-tree.h.
(cxx_eval_constant_expression): Move the declaration into cp-tree.h.
No longer static. Handle REFLECT_EXPR. Handle conversion of
a reflection to the meta::info type.
(cxx_eval_cxa_builtin_fn): Override current_function_decl.
(cxx_eval_builtin_function_call): Handle __builtin_is_string_literal.
(is_std_allocator): Also check __new_allocator.
(is_std_allocator_allocate): No longer static.
(cxa_allocate_and_throw_exception): New.
(cxx_eval_call_expression): Handle metafunctions. Maybe set
metafns_called.
(reduced_constant_expression_p): Handle REFLECT_EXPR.
(cxx_eval_binary_expression): Use compare_reflections for comparing
reflections.
(find_immediate_fndecl): Don't walk REFLECT_EXPR_P.
(cxx_eval_outermost_constant_expr): Set global_ctx.consteval_block.
Detect consteval-only smuggling.
(potential_constant_expression_1): Return true for REFLECT_EXPR
and SPLICE_EXPR.
* constraint.cc (diagnose_trait_expr): Add CPTK_IS_CONSTEVAL_ONLY case.
* cp-gimplify.cc (immediate_escalating_function_p): No longer static.
(promote_function_to_consteval): Likewise.
(cp_gimplify_expr) <case CALL_EXPR>: Detect any surviving consteval-only
expressions.
<case CP_BUILT_IN_IS_STRING_LITERAL>: Handle.
(wipe_consteval_only_r): New.
(cp_fold_immediate_r): Detect invalid uses of consteval-only types.
Clear consteval-only DECL_EXPRs.
(cp_genericize_r): Wipe consteval-only vars from BIND_EXPR_VARS and
BLOCK_VARS.
* cp-objcp-common.cc (cp_common_init_ts): Mark META_TYPE, SPLICE_SCOPE,
SPLICE_EXPR, and REFLECT_EXPR.
* cp-trait.def (IS_CONSTEVAL_ONLY): New trait.
* cp-tree.def (REFLECT_EXPR, META_TYPE, SPLICE_EXPR, SPLICE_SCOPE): New
trees.
* cp-tree.h (enum cp_tree_index): Add CPTI_ANNOTATION_IDENTIFIER,
CPTI_STD_META, and CPTI_META_INFO_TYPE.
(std_meta_node): Define.
(meta_info_type_node): Define.
(annotation_identifier): Define.
(REFLECTION_TYPE_P): Define.
(REFLECT_EXPR_P): Define.
(REFLECT_EXPR_HANDLE): Define.
(enum reflect_kind): New.
(REFLECT_EXPR_KIND): Define.
(SET_REFLECT_EXPR_KIND): Define.
(SPLICE_EXPR_EXPRESSION_P): Define.
(SET_SPLICE_EXPR_EXPRESSION_P): Define.
(SPLICE_EXPR_MEMBER_ACCESS_P): Define.
(SET_SPLICE_EXPR_MEMBER_ACCESS_P): Define.
(SPLICE_EXPR_ADDRESS_P): Define.
(SET_SPLICE_EXPR_ADDRESS_P): Define.
(SPLICE_SCOPE_EXPR): Define.
(SPLICE_SCOPE_TYPE_P): Define.
(WILDCARD_TYPE_P): Include SPLICE_SCOPE.
(COMPONENT_REF_SPLICE_P): Define.
(SCALAR_TYPE_P): Include REFLECTION_TYPE_P.
(ENUM_BEING_DEFINED_P): Define.
(OLD_PARM_DECL_P): Define.
(MULTIPLE_NAMES_PARM_P): Define.
(cp_preserve_using_decl): Declare.
(DEF_OPERATOR, DEF_ASSN_OPERATOR): Include META.
(struct ovl_op_info_t): Add meta_name member.
(enum cp_built_in_function): Add CP_BUILT_IN_IS_STRING_LITERAL.
(build_stub_type): Declare.
(current_function_decl_without_access_scope): Declare.
(dependent_namespace_p): Declare.
(convert_reflect_constant_arg): Declare.
(finish_base_specifier): Adjust declaration.
(parsing_lambda_declarator): Declare.
(fold_builtin_is_string_literal): Declare.
(annotation_p): Declare.
(finish_class_member_access_expr): Adjust declaration.
(immediate_escalating_function_p): Declare.
(promote_function_to_consteval): Declare.
(is_std_allocator_allocate): Declare.
(cxa_allocate_and_throw_exception): Declare.
(enum value_cat): Define.
(cxx_eval_constant_expression): Declare.
(cxx_constexpr_quiet_p): Declare.
(cxx_constexpr_manifestly_const_eval): Declare.
(cxx_constexpr_caller): Declare.
(cxx_constexpr_consteval_block): Declare.
(init_reflection): Declare.
(metafunction_p): Declare.
(direct_base_parent): Declare.
(process_metafunction): Declare.
(get_reflection): Declare.
(get_null_reflection): Declare.
(splice): Declare.
(check_out_of_consteval_use): Declare.
(consteval_only_p): Declare.
(compare_reflections): Declare.
(valid_splice_type_p): Declare.
(valid_splice_scope_p): Declare.
(check_splice_expr): Declare.
(make_splice_scope): Declare.
(dependent_splice_p): Declare.
(reflection_mangle_prefix): Declare.
(check_consteval_only_fn): Declare.
* cvt.cc (convert_to_void): Call check_out_of_consteval_use.
* cxx-pretty-print.cc (cxx_pretty_printer::unary_expression): New
REFLECT_EXPR case.
(cxx_pretty_printer::expression): Likewise.
(cxx_pretty_printer::simple_type_specifier): New META_TYPE case.
(cxx_pretty_printer::type_id): Likewise.
* decl.cc (duplicate_decls): Merge parameter names for Reflection.
Maybe set OLD_PARM_DECL_P.
(initialize_predefined_identifiers): Add "annotation ".
(cxx_init_decl_processing): Add __builtin_is_string_literal. Call
init_reflection.
(maybe_commonize_var): Do nothing for consteval_only_p.
(check_initializer): Default-initialize std::meta::info.
(make_rtl_for_nonlocal_decl): For consteval_only_p vars, set
DECL_EXTERNAL and return early.
(cp_finish_decl): Call check_out_of_consteval_use. Don't go
creating a varpool node for consteval_only_p.
(get_tuple_size): Check the instantiation instead of the type.
(grokfndecl): Call check_consteval_only_fn.
(xref_basetypes): Stitch annotations onto BINFO_BASE_ACCESSES.
(finish_enum_value_list): Clear ENUM_BEING_DEFINED_P.
* decl2.cc (is_late_template_attribute): Handle all annotations as
late.
(cp_check_const_attributes): Don't handle annotations here.
(maybe_make_one_only): Do nothing for consteval_only_p.
(mark_needed): Likewise.
(min_vis_expr_r): Handle reflections.
(prune_vars_needing_no_initialization): Skip consteval_only_p.
(no_linkage_error): Return early for metafunctions.
(c_parse_final_cleanups): Don't write out consteval_only_p vars. Avoid
complaining about metafunctions.
* error.cc (dump_type): New cases for CONST_DECL, META_TYPE, and
SPLICE_SCOPE.
(dump_type_prefix): New cases for META_TYPE and SPLICE_SCOPE.
(dump_type_suffix): Likewise.
(dump_decl): Dump SPLICE_EXPR.
(dump_expr): Dump REFLECT_EXPR and SPLICE_EXPR.
* init.cc (build_zero_init_1): Build a null reflection value.
(perform_member_init): Call check_out_of_consteval_use.
* lex.cc (DEF_OPERATOR, OPERATOR_TRANSITION): Update defines.
* mangle.cc (write_type): Mangle META_TYPE.
(write_expression): Handle REFLECT_EXPR.
(write_reflection): New.
(write_template_arg_literal): New REFLECT_EXPR case.
(write_template_arg): Handle REFLECT_EXPR.
* method.cc (build_stub_type): No longer static.
* module.cc (trees_out::type_node): Handle META_TYPE.
(trees_in::tree_node): Likewise.
* name-lookup.cc (name_lookup::adl_type): std::meta is an associated
namespace of std::meta::info.
(strip_using_decl): Don't strip when cp_preserve_using_decl.
(handle_namespace_attrs): Handle annotations.
(do_namespace_alias): Handle SPLICE_EXPR.
(lookup_qualified_name): When cp_preserve_using_decl, don't do
OVL_FUNCTION.
(finish_using_directive): Detect annotations on using directive.
* operators.def: Update for META_NAME.
* parser.cc: New cp_preserve_using_decl global.
(enum required_token): Add RT_CLOSE_SPLICE.
(get_required_cpp_ttype): Return CPP_CLOSE_SPLICE for RT_CLOSE_SPLICE.
(cp_parser_next_tokens_start_splice_type_spec_p): New.
(cp_parser_next_tokens_can_start_splice_scope_spec_p): New.
(cp_parser_splice_specifier): New.
(cp_parser_splice_type_specifier): New.
(cp_parser_splice_expression): New.
(cp_parser_splice_scope_specifier): New.
(cp_parser_splice_spec_is_nns_p): New.
(cp_parser_nth_token_starts_splice_without_nns_p): New.
(cp_parser_primary_expression): Handle CPP_OPEN_SPLICE. Give an
error for ^^ outside reflection.
(cp_parser_unqualified_id): Allow r.~typename [:R:].
(cp_parser_nested_name_specifier_opt): Cope with splice-scope-specifier.
(cp_parser_qualifying_entity): Parse splice-scope-specifier.
(cp_parser_postfix_expression): Deal with [: :] after a typename.
(cp_parser_postfix_dot_deref_expression): Parse & handle splices
in a class member access. Pass splice_p to
finish_class_member_access_expr.
(cp_parser_reflection_name): New.
(cp_parser_reflect_expression): New.
(cp_parser_unary_expression): Parse reflect-expression.
(cp_parser_declaration): Parse splice-scope-specifier.
(cp_parser_decomposition_declaration): Detect annotations on structured
bindings.
(cp_parser_decltype_expr): Parse splice-expression.
(cp_parser_template_id): New parsed_templ argument. If it's nonnull,
don't parse the template name. Turn an assert into a condition.
(cp_parser_type_specifier): Handle typename [: :].
(cp_parser_simple_type_specifier): Parse splice-type-specifier.
(cp_parser_enum_specifier): Set ENUM_BEING_DEFINED_P.
(cp_parser_namespace_alias_definition): Parse splice-specifier.
(cp_parser_using_directive): Likewise.
(cp_parser_type_id_1): New bool * parameter to distinguish between
types and type aliases. Set it.
(cp_parser_type_id): Adjust the call to cp_parser_type_id_1.
(cp_parser_template_type_arg): Likewise.
(cp_parser_trailing_type_id): Likewise.
(cp_parser_base_specifier): Handle annotations. Maybe give an error
for splice-scope-specifier. Parse splice-type-specifier. Pass
annotations to finish_base_specifier.
(cp_parser_annotation): New.
(cp_parser_std_attribute_list): Detect mixing annotations and attributes
in the same list.
(cp_parser_annotation_list): New.
(cp_parser_std_attribute_spec): Parse annotations.
(cp_parser_skip_balanced_tokens): Also handle CPP_OPEN_SPLICE
and CPP_CLOSE_SPLICE.
(cp_parser_type_requirement): Parse splice-type-specifier.
(cp_parser_lookup_name): Also consider dependent namespaces. Don't
call check_accessibility_of_qualified_id for USING_DECLs.
(cp_parser_required_error): Handle RT_CLOSE_SPLICE.
* pt.cc (current_function_decl_without_access_scope): New.
(verify_unstripped_args_1): REFLECT_EXPR_P is OK.
(iterative_hash_template_arg): Handle REFLECT_EXPR.
(convert_nontype_argument): Maybe give an error for REFLECTION_TYPE_P.
(for_each_template_parm_r): Handle SPLICE_SCOPE.
(instantiate_class_template): Handle annotations.
(tsubst_pack_index): Make static.
(tsubst_decl): Handle NAMESPACE_DECL.
(tsubst_splice_scope): New.
(tsubst_splice_expr): New.
(tsubst): Don't return early for NAMESPACE_DECL. New META_TYPE case.
Handle a splice-specifier that expanded into a NAMESPACE_DECL. Handle
SPLICE_SCOPE, SPLICE_EXPR, and TEMPLATE_ID_EXPR.
(tsubst_scope): Also accept NAMESPACE_DECL.
(tsubst_qualified_id): Check dependent_namespace_p.
(tsubst_lambda_expr): Set LAMBDA_EXPR_CONSTEVAL_BLOCK_P.
(tsubst_expr): Allow dependent_splice_p in an assert. Check
COMPONENT_REF_SPLICE_P and pass it to finish_class_member_access_expr.
<case NAMESPACE_DECL>: Remove.
New REFLECT_EXPR and SPLICE_EXPR cases.
(unify): Handle META_TYPE.
(instantiate_body): Call check_consteval_only_fn.
(tsubst_enum): Set ENUM_BEING_DEFINED_P.
(dependent_type_p_r): A splice-scope-specifier is dependent.
(dependent_namespace_p): New.
(value_dependent_expression_p): Handle REFLECT_EXPR. Also handle
[meta.reflection.access.context]/8.
(type_dependent_expression_p): REFLECT_EXPR_P is not type-dependent.
(convert_reflect_constant_arg): New.
* search.cc (check_final_overrider): Adjust for CWG 3117.
* semantics.cc (finish_base_specifier): Handle annotations.
(parsing_lambda_declarator): No longer static.
(finish_id_expression_1): Check dependent_namespace_p.
(fold_builtin_is_string_literal): New.
(trait_expr_value): Handle CPTK_IS_CONSTEVAL_ONLY.
(finish_trait_expr): Likewise.
* tree.cc (handle_annotation_attribute): New.
(builtin_valid_in_constant_expr_p): Return true for
CP_BUILT_IN_IS_STRING_LITERAL.
(cp_tree_equal): Handle comparing REFLECT_EXPRs.
(internal_attributes): Add "annotation ".
(annotation_p): New.
* typeck.cc (finish_class_member_access_expr): New splice_p argument.
Handle dependent splices. Implement splicing a base class subobject.
Handle class member access using a splice-expression.
(cp_build_binary_op): Handle comparing std::meta::infos.
(check_return_expr): Call check_out_of_consteval_use.
* metafns.gperf: New file.
* metafns.h: New file.
* reflect.cc: New file.
2026-01-14 David Malcolm <dmalcolm@redhat.com>
* call.cc (get_fndecl_argument_location): Use DECL_SOURCE_LOCATION
for "this".
* cp-tree.h (class candidate_context): New.
(print_candidates): Add optional candidate_context param.
* decl2.cc: Include "gcc-rich-location.h" and
"tree-pretty-print-markup.h".
(struct fndecl_signature): New.
(class parm_rich_location): New.
(class fndecl_comparison): New.
(class decl_mismatch_context): New.
(check_classfn): For the "no declaration matches" case, pass an
instance of a custom candidate_context subclass to
print_candidates, using fndecl_comparison to report on close
matches.
* pt.cc (print_candidates): Add optional candidate_context param.
Use it if provided to potentially emit per-candidate notes.
2026-01-14 David Malcolm <dmalcolm@redhat.com>
* call.cc (print_z_candidates): Move inform_n call into a new
inform_num_candidates function.
* class.cc (check_methods): Pass location to call to
print_candidates.
(resolve_address_of_overloaded_function): Likewise.
* cp-tree.h (print_candidates): Add location_t param.
(inform_num_candidates): New decl.
* decl.cc (make_typename_type): Pass location to call to
print_candidates.
(reshape_init_class): Likewise.
(lookup_and_check_tag): Likewise.
* decl2.cc (check_classfn): Likewise.
* error.cc (qualified_name_lookup_error): Likewise.
* init.cc (build_new_1): Likewise.
* name-lookup.cc (lookup_using_decl): Likewise.
(set_decl_namespace): Likewise.
(push_namespace): Likewise.
* parser.cc (cp_parser_nested_name_specifier_opt): Likewise.
(cp_parser_lookup_name): Likewise.
* pt.cc (print_candidates_1): Drop, converting the looping part
into...
(flatten_candidates): ...this new function.
(inform_num_candidates): New function.
(print_candidates): Use flatten_candidates to build an auto_vec
of candidates, and use this to print them here, rather than in
print_candidates_1. Eliminate the dynamic allocation of spaces
for a prefix in favor of printing "candidate %i" when there is
more than one candidate. Add "error_loc" param and pass it to
inform_num_candidates to show a heading, and add nesting levels
for it and for the candidate notes.
(determine_specialization): Pass location to calls to
print_candidates.
* search.cc (lookup_member): Likewise.
* semantics.cc (finish_id_expression_1): Likewise.
2026-01-14 Jakub Jelinek <jakub@redhat.com>
PR c++/123551
* constexpr.cc (potential_constant_expression_1) <case GOTO_EXPR>:
Only test DECL_ARTIFICIAL on LABEL_DECLs.
2026-01-13 Nathaniel Shead <nathanieloshead@gmail.com>
* coroutines.cc (create_coroutine_info_table): New function.
(get_or_insert_coroutine_info): Mark static.
(ensure_coro_initialized): Likewise; use
create_coroutine_info_table.
(coro_promise_type_found_p): Set DECL_CONTEXT for proxies.
(coro_set_ramp_function): New function.
(coro_set_transform_functions): New function.
(coro_build_actor_or_destroy_function): Use
coro_set_ramp_function, mark as DECL_COROUTINE_P.
* cp-tree.h (coro_set_transform_functions): Declare.
(coro_set_ramp_function): Declare.
* module.cc (struct merge_key): New field coro_disc.
(dumper::impl::nested_name): Distinguish coroutine transform
functions.
(get_coroutine_discriminator): New function.
(trees_out::key_mergeable): Stream coroutine discriminator.
(check_mergeable_decl): Adjust comment, check for matching
coroutine discriminator.
(trees_in::key_mergeable): Read coroutine discriminator.
(has_definition): Override for coroutine transform functions.
(trees_out::write_function_def): Stream linked ramp, actor, and
destroy functions for coroutines.
(trees_in::read_function_def): Read them.
(module_state::read_cluster): Set cfun->coroutine_component.
2026-01-13 Nathaniel Shead <nathanieloshead@gmail.com>
* module.cc (trees_out::lang_decl_bools): Update list of flags.
(trees_in::lang_decl_bools): Likewise.
2026-01-12 Patrick Palka <ppalka@redhat.com>
PR c++/123189
* name-lookup.cc (binding_to_template_parms_of_scope_p):
Gracefully handle TEMPLATE_INFO whose TI_TEMPLATE is a TREE_LIST.
* pt.cc (maybe_begin_member_template_processing): For a friend
template specialization consider its class context instead.
2026-01-12 Jason Merrill <jason@redhat.com>
PR libstdc++/123326
* cp-tree.h (DECL_NONGNU_INLINE_P): New.
* decl.cc (duplicate_decls, start_decl): Check it.
* decl2.cc (vague_linkage_p, import_export_class): Likewise.
(vtables_uniquely_emitted, import_export_decl): Likewise.
* class.cc (determine_key_method): Check it instead of
lookup_attribute.
2026-01-12 Nathaniel Shead <nathanieloshead@gmail.com>
PR c++/115163
* call.cc (implicit_conversion_error): Add flags argument, call
maybe_show_nonconverting_candidate.
(build_converted_constant_expr_internal): Pass flags to
implicit_conversion_error.
(perform_implicit_conversion_flags): Likewise.
* cvt.cc (ocp_convert): Call maybe_show_nonconverting_candidate
on conversion error.
2026-01-12 Jakub Jelinek <jakub@redhat.com>
PR c++/123526
* method.cc: Include attribs.h.
(implicitly_declare_fn): Remove gnu::gnu_inline attribute.
2026-01-09 Jakub Jelinek <jakub@redhat.com>
* gen-cxxapi-file.py: Update copyright year. Separate
parts of Copyright word with {:s} so that it doesn't get matched
by update-copyright.py.
2026-01-09 Nathaniel Shead <nathanieloshead@gmail.com>
PR c++/123393
* name-lookup.cc (make_namespace_finish): Pass from_import to
add_using_namespace.
2026-01-07 Tobias Burnus <tburnus@baylibre.com>
* parser.cc (OMP_GROUPPRIVATE_CLAUSE_MASK,
cp_parser_omp_groupprivate): New.
(cp_parser_pragma): Call it.
(cp_maybe_parse_omp_decl): Uncomment PRAGMA_OMP_GROUPPRIVATE
check.
2026-01-03 Jakub Jelinek <jakub@redhat.com>
PR libstdc++/123326
* class.cc (determine_key_method): Allow virtual inline/constexpr
non-pure virtual methods with gnu::gnu_inline attribute to be key
methods.
2026-01-03 Jakub Jelinek <jakub@redhat.com>
PR c++/123347
* constexpr.cc (potential_constant_expression_1): Check for
CLASS_TYPE_P before using TYPE_POLYMORPHIC_P on TREE_TYPE (e).
2026-01-03 Jakub Jelinek <jakub@redhat.com>
PR c++/123331
* constexpr.cc (cxx_eval_vec_init_1): Don't build INIT_EXPR if
eltinit is erroneous.
2026-01-02 Jakub Jelinek <jakub@redhat.com>
PR c++/123277
* decl2.cc (is_late_template_attribute): Return false also for
[[maybe_unused]] attribute on TYPE_DECLs to dependent types.
Copyright (C) 2026 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.