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Commits
| Author | SHA1 | Message | Date | |
|---|---|---|---|---|
 Marek PolacekandJakub Jelinek
|
4b0e94b394 |
c++: C++26 Reflection [PR120775]
This patch implements C++26 Reflection as specified by P2996R13, which allows
users to perform magic. This patch also implements related papers:
Annotations for Reflection (P3394R4),
Splicing a base class subobject (P3293R3),
define_static_{string,object,array} (P3491R3),
Function Parameter Reflection (P3096R12).
(I already implemented consteval blocks back in July.)
(We do not yet implement P3795.)
We also implemented some CWG issues that had been approved in Kona;
e.g., CWG 3101, 3109, 3111, 3115, 3117.
All metafunctions are implemented in this patch.
The feature needs to be enabled by -std=c++26 -freflection.
Some stats: the v1 patch was over 51,200 LOC which were written in ~335
commits. It came with over 400 tests with 11,722 static_asserts. We still
had about 50 TODOs and FIXMEs in the code.
v2 consists of about 56,000 LOC which were created in 440 commits. We
now have 446 tests with 40 TODOs remaining.
v3 brought another 77 commits, mostly clean-ups and various bug fixes.
I'd like to thank:
Jakub Jelinek, whose efforts can only be described as heroic and who
never ceases to amaze me even after nearly 15 years of working together,
he implemented many difficult metafunctions, annotations, mangling,
converted our metafunction dispatch to using gperf, and so on and on;
Jonathan Wakely for his libstdc++ patch review and generous & impeccable
advice even at odd hours; Dan Katz for his work on the Reflection papers,
writing Reflection tests for clang++ (many of which I've stolen^Wused),
for his advice, bug reports, and generally cheering me on; Jason Merrill
for his guidance, patch review, and, in fact, encouraging me to take on
this project in the first place; Michael Levine, Valentyn Yukhymenko, and
Alex Yesmanchyk for their nice contributions to Reflection; and Tomasz
Kamiński for providing test cases, finding bugs, and answering my C++
questions.
PR c++/120775
PR c++/123081
PR c++/122634
gcc/ChangeLog:
* attribs.cc (attribute_value_equal): Return false if either attribute
is ATTR_UNIQUE_VALUE_P.
(merge_attributes): Handle lists with ATTR_UNIQUE_VALUE_P values.
* doc/invoke.texi: Document -freflection.
* dwarf2out.cc (is_base_type) <case default>: Check
TREE_CODE >= LAST_AND_UNUSED_TREE_CODE instead of is_cxx_auto.
(gen_type_die_with_usage): For TREE_CODE >= LAST_AND_UNUSED_TREE_CODE
trees use use DW_TAG_unspecified_type.
* tree-core.h (struct tree_base): Update a comment.
* tree.h (ATTR_UNIQUE_VALUE_P): Define.
(BINFO_BASE_ACCESSES): Update the comment.
gcc/c-family/ChangeLog:
* c-attribs.cc (attribute_takes_identifier_p): Return false for C++
annotations. Handle "old parm name".
* c-cppbuiltin.cc (c_cpp_builtins): Define __cpp_impl_reflection.
* c.opt (freflection): New.
gcc/cp/ChangeLog:
* 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.
libcc1/ChangeLog:
* libcp1plugin.cc (start_class_def): Update the call to
finish_base_specifier.
libcpp/ChangeLog:
* charset.cc (_cpp_destroy_iconv): Destroy narrow_cset_desc and
utf8_cset_desc.
(cpp_translate_string): New.
(cpp_valid_identifier): New.
* include/cpplib.h: Add OPEN_SPLICE, CLOSE_SPLICE, and REFLECT_OP to
TTYPE_TABLE.
(cpp_translate_string): Declare.
(cpp_valid_identifier): Declare.
* internal.h (struct cpp_reader): Add reverse_narrow_cset_desc and
reverse_utf8_cset_desc fields.
* lex.cc (_cpp_lex_direct): Emit CPP_CLOSE_SPLICE, CPP_REFLECT_OP,
and CPP_OPEN_SPLICE tokens.
libstdc++-v3/ChangeLog:
* include/Makefile.am (std_headers): Add ${std_srcdir}/meta.
* include/Makefile.in: Regenerate.
* include/bits/iterator_concepts.h (std::ranges::__access::__begin): Add
constexpr.
* include/bits/version.def (reflection): New.
* include/bits/version.h: Regenerate.
* include/precompiled/stdc++.h: Include <meta> for C++26.
* include/std/meta: New file.
* include/std/type_traits (std::is_reflection): New trait.
(std::is_fundamental): Include is_reflection for C++26 -freflection.
(std::is_reflection_v): New variable template.
(std::is_consteval_only): New trait.
(std::is_consteval_only_v): New variable template.
* src/c++23/std.cc.in: Add <meta> exports.
* testsuite/20_util/variable_templates_for_traits.cc: Add -freflection as
dg-additional-options for C++26. Add std::is_reflection_v test in that case.
* testsuite/20_util/is_consteval_only/requirements/explicit_instantiation.cc: New test.
* testsuite/20_util/is_consteval_only/requirements/typedefs.cc: New test.
* testsuite/20_util/is_consteval_only/value.cc: New test.
* testsuite/20_util/is_reflection/requirements/explicit_instantiation.cc: New test.
* testsuite/20_util/is_reflection/requirements/typedefs.cc: New test.
* testsuite/20_util/is_reflection/value.cc: New test.
gcc/testsuite/ChangeLog:
* g++.dg/DRs/dr2581-1.C: Add -freflection.
* g++.dg/DRs/dr2581-2.C: Likewise.
* g++.dg/reflect/access_context1.C: New test.
* g++.dg/reflect/access_context2.C: New test.
* g++.dg/reflect/access_context3.C: New test.
* g++.dg/reflect/adl1.C: New test.
* g++.dg/reflect/alignment_of1.C: New test.
* g++.dg/reflect/alignment_of2.C: New test.
* g++.dg/reflect/annotations1.C: New test.
* g++.dg/reflect/annotations2.C: New test.
* g++.dg/reflect/annotations3.C: New test.
* g++.dg/reflect/annotations4.C: New test.
* g++.dg/reflect/annotations5.C: New test.
* g++.dg/reflect/annotations6.C: New test.
* g++.dg/reflect/annotations7.C: New test.
* g++.dg/reflect/annotations8.C: New test.
* g++.dg/reflect/anon1.C: New test.
* g++.dg/reflect/anon2.C: New test.
* g++.dg/reflect/anon3.C: New test.
* g++.dg/reflect/bases_of1.C: New test.
* g++.dg/reflect/bases_of2.C: New test.
* g++.dg/reflect/bases_of3.C: New test.
* g++.dg/reflect/bit_size_of1.C: New test.
* g++.dg/reflect/bitfield1.C: New test.
* g++.dg/reflect/can_substitute1.C: New test.
* g++.dg/reflect/class1.C: New test.
* g++.dg/reflect/class2.C: New test.
* g++.dg/reflect/common_reference1.C: New test.
* g++.dg/reflect/common_type1.C: New test.
* g++.dg/reflect/compare1.C: New test.
* g++.dg/reflect/compare10.C: New test.
* g++.dg/reflect/compare2.C: New test.
* g++.dg/reflect/compare3.C: New test.
* g++.dg/reflect/compare4.C: New test.
* g++.dg/reflect/compare5.C: New test.
* g++.dg/reflect/compare6.C: New test.
* g++.dg/reflect/compare7.C: New test.
* g++.dg/reflect/compare8.C: New test.
* g++.dg/reflect/compare9.C: New test.
* g++.dg/reflect/compat1.C: New test.
* g++.dg/reflect/complete1.C: New test.
* g++.dg/reflect/constant_of1.C: New test.
* g++.dg/reflect/constant_of2.C: New test.
* g++.dg/reflect/constant_of3.C: New test.
* g++.dg/reflect/constant_of4.C: New test.
* g++.dg/reflect/constant_of5.C: New test.
* g++.dg/reflect/constant_of6.C: New test.
* g++.dg/reflect/constant_of7.C: New test.
* g++.dg/reflect/constant_of8.C: New test.
* g++.dg/reflect/constant_of9.C: New test.
* g++.dg/reflect/crash1.C: New test.
* g++.dg/reflect/crash10.C: New test.
* g++.dg/reflect/crash11.C: New test.
* g++.dg/reflect/crash12.C: New test.
* g++.dg/reflect/crash13.C: New test.
* g++.dg/reflect/crash14.C: New test.
* g++.dg/reflect/crash15.C: New test.
* g++.dg/reflect/crash16.C: New test.
* g++.dg/reflect/crash17.C: New test.
* g++.dg/reflect/crash18.C: New test.
* g++.dg/reflect/crash2.C: New test.
* g++.dg/reflect/crash3.C: New test.
* g++.dg/reflect/crash4.C: New test.
* g++.dg/reflect/crash5.C: New test.
* g++.dg/reflect/crash6.C: New test.
* g++.dg/reflect/crash7.C: New test.
* g++.dg/reflect/crash8.C: New test.
* g++.dg/reflect/crash9.C: New test.
* g++.dg/reflect/data_member_spec1.C: New test.
* g++.dg/reflect/data_member_spec2.C: New test.
* g++.dg/reflect/data_member_spec3.C: New test.
* g++.dg/reflect/data_member_spec4.C: New test.
* g++.dg/reflect/dealias1.C: New test.
* g++.dg/reflect/dealias2.C: New test.
* g++.dg/reflect/dealias3.C: New test.
* g++.dg/reflect/define_aggregate1.C: New test.
* g++.dg/reflect/define_aggregate2.C: New test.
* g++.dg/reflect/define_aggregate3.C: New test.
* g++.dg/reflect/define_aggregate4.C: New test.
* g++.dg/reflect/define_aggregate5.C: New test.
* g++.dg/reflect/define_static_array1.C: New test.
* g++.dg/reflect/define_static_array2.C: New test.
* g++.dg/reflect/define_static_array3.C: New test.
* g++.dg/reflect/define_static_array4.C: New test.
* g++.dg/reflect/define_static_object1.C: New test.
* g++.dg/reflect/define_static_object2.C: New test.
* g++.dg/reflect/define_static_string1.C: New test.
* g++.dg/reflect/dep1.C: New test.
* g++.dg/reflect/dep10.C: New test.
* g++.dg/reflect/dep11.C: New test.
* g++.dg/reflect/dep2.C: New test.
* g++.dg/reflect/dep3.C: New test.
* g++.dg/reflect/dep4.C: New test.
* g++.dg/reflect/dep5.C: New test.
* g++.dg/reflect/dep6.C: New test.
* g++.dg/reflect/dep7.C: New test.
* g++.dg/reflect/dep8.C: New test.
* g++.dg/reflect/dep9.C: New test.
* g++.dg/reflect/diag1.C: New test.
* g++.dg/reflect/diag2.C: New test.
* g++.dg/reflect/diag3.C: New test.
* g++.dg/reflect/diag4.C: New test.
* g++.dg/reflect/display_string_of1.C: New test.
* g++.dg/reflect/eh1.C: New test.
* g++.dg/reflect/eh2.C: New test.
* g++.dg/reflect/eh3.C: New test.
* g++.dg/reflect/eh4.C: New test.
* g++.dg/reflect/eh5.C: New test.
* g++.dg/reflect/eh6.C: New test.
* g++.dg/reflect/eh7.C: New test.
* g++.dg/reflect/eh8.C: New test.
* g++.dg/reflect/eh9.C: New test.
* g++.dg/reflect/enumerators_of1.C: New test.
* g++.dg/reflect/error1.C: New test.
* g++.dg/reflect/error10.C: New test.
* g++.dg/reflect/error2.C: New test.
* g++.dg/reflect/error3.C: New test.
* g++.dg/reflect/error4.C: New test.
* g++.dg/reflect/error5.C: New test.
* g++.dg/reflect/error6.C: New test.
* g++.dg/reflect/error8.C: New test.
* g++.dg/reflect/error9.C: New test.
* g++.dg/reflect/expr1.C: New test.
* g++.dg/reflect/expr10.C: New test.
* g++.dg/reflect/expr11.C: New test.
* g++.dg/reflect/expr12.C: New test.
* g++.dg/reflect/expr13.C: New test.
* g++.dg/reflect/expr14.C: New test.
* g++.dg/reflect/expr2.C: New test.
* g++.dg/reflect/expr3.C: New test.
* g++.dg/reflect/expr4.C: New test.
* g++.dg/reflect/expr5.C: New test.
* g++.dg/reflect/expr6.C: New test.
* g++.dg/reflect/expr7.C: New test.
* g++.dg/reflect/expr8.C: New test.
* g++.dg/reflect/expr9.C: New test.
* g++.dg/reflect/extract1.C: New test.
* g++.dg/reflect/extract2.C: New test.
* g++.dg/reflect/extract3.C: New test.
* g++.dg/reflect/extract4.C: New test.
* g++.dg/reflect/extract5.C: New test.
* g++.dg/reflect/extract6.C: New test.
* g++.dg/reflect/extract7.C: New test.
* g++.dg/reflect/extract8.C: New test.
* g++.dg/reflect/extract9.C: New test.
* g++.dg/reflect/feat1.C: New test.
* g++.dg/reflect/feat2.C: New test.
* g++.dg/reflect/has_c_language_linkage1.C: New test.
* g++.dg/reflect/has_default_argument1.C: New test.
* g++.dg/reflect/has_default_argument2.C: New test.
* g++.dg/reflect/has_default_member_initializer1.C: New test.
* g++.dg/reflect/has_ellipsis_parameter1.C: New test.
* g++.dg/reflect/has_external_linkage1.C: New test.
* g++.dg/reflect/has_external_linkage2.C: New test.
* g++.dg/reflect/has_identifier1.C: New test.
* g++.dg/reflect/has_identifier2.C: New test.
* g++.dg/reflect/has_internal_linkage1.C: New test.
* g++.dg/reflect/has_internal_linkage2.C: New test.
* g++.dg/reflect/has_linkage1.C: New test.
* g++.dg/reflect/has_module_linkage1.C: New test.
* g++.dg/reflect/has_module_linkage2.C: New test.
* g++.dg/reflect/has_parent1.C: New test.
* g++.dg/reflect/has_template_arguments1.C: New test.
* g++.dg/reflect/has_template_arguments2.C: New test.
* g++.dg/reflect/has_template_arguments3.C: New test.
* g++.dg/reflect/has_template_arguments4.C: New test.
* g++.dg/reflect/identifier_of1.C: New test.
* g++.dg/reflect/identifier_of2.C: New test.
* g++.dg/reflect/init1.C: New test.
* g++.dg/reflect/init10.C: New test.
* g++.dg/reflect/init11.C: New test.
* g++.dg/reflect/init12.C: New test.
* g++.dg/reflect/init13.C: New test.
* g++.dg/reflect/init14.C: New test.
* g++.dg/reflect/init15.C: New test.
* g++.dg/reflect/init16.C: New test.
* g++.dg/reflect/init17.C: New test.
* g++.dg/reflect/init2.C: New test.
* g++.dg/reflect/init3.C: New test.
* g++.dg/reflect/init4.C: New test.
* g++.dg/reflect/init5.C: New test.
* g++.dg/reflect/init6.C: New test.
* g++.dg/reflect/init7.C: New test.
* g++.dg/reflect/init8.C: New test.
* g++.dg/reflect/init9.C: New test.
* g++.dg/reflect/is_accessible1.C: New test.
* g++.dg/reflect/is_accessible2.C: New test.
* g++.dg/reflect/is_alias_template1.C: New test.
* g++.dg/reflect/is_assignment1.C: New test.
* g++.dg/reflect/is_bit_field1.C: New test.
* g++.dg/reflect/is_class_member1.C: New test.
* g++.dg/reflect/is_class_template1.C: New test.
* g++.dg/reflect/is_complete_type1.C: New test.
* g++.dg/reflect/is_complete_type2.C: New test.
* g++.dg/reflect/is_concept1.C: New test.
* g++.dg/reflect/is_const1.C: New test.
* g++.dg/reflect/is_consteval_only1.C: New test.
* g++.dg/reflect/is_constructible_type1.C: New test.
* g++.dg/reflect/is_constructible_type2.C: New test.
* g++.dg/reflect/is_constructor_template1.C: New test.
* g++.dg/reflect/is_constuctor1.C: New test.
* g++.dg/reflect/is_conversion_function1.C: New test.
* g++.dg/reflect/is_conversion_function_template1.C: New test.
* g++.dg/reflect/is_copy_assignment1.C: New test.
* g++.dg/reflect/is_copy_constructor1.C: New test.
* g++.dg/reflect/is_data_member_spec1.C: New test.
* g++.dg/reflect/is_default_constructor1.C: New test.
* g++.dg/reflect/is_defaulted1.C: New test.
* g++.dg/reflect/is_defaulted2.C: New test.
* g++.dg/reflect/is_deleted1.C: New test.
* g++.dg/reflect/is_deleted2.C: New test.
* g++.dg/reflect/is_destructor1.C: New test.
* g++.dg/reflect/is_enumerable_type1.C: New test.
* g++.dg/reflect/is_enumerator1.C: New test.
* g++.dg/reflect/is_explicit1.C: New test.
* g++.dg/reflect/is_explicit2.C: New test.
* g++.dg/reflect/is_explicit_object_parameter1.C: New test.
* g++.dg/reflect/is_final1.C: New test.
* g++.dg/reflect/is_function1.C: New test.
* g++.dg/reflect/is_function2.C: New test.
* g++.dg/reflect/is_function3.C: New test.
* g++.dg/reflect/is_function_parameter1.C: New test.
* g++.dg/reflect/is_function_parameter2.C: New test.
* g++.dg/reflect/is_function_template1.C: New test.
* g++.dg/reflect/is_function_template2.C: New test.
* g++.dg/reflect/is_function_type1.C: New test.
* g++.dg/reflect/is_literal_operator1.C: New test.
* g++.dg/reflect/is_literal_operator_template1.C: New test.
* g++.dg/reflect/is_lrvalue_reference_qualified1.C: New test.
* g++.dg/reflect/is_move_assignment1.C: New test.
* g++.dg/reflect/is_move_constructor1.C: New test.
* g++.dg/reflect/is_mutable_member1.C: New test.
* g++.dg/reflect/is_namespace1.C: New test.
* g++.dg/reflect/is_namespace_alias1.C: New test.
* g++.dg/reflect/is_namespace_member1.C: New test.
* g++.dg/reflect/is_noexcept1.C: New test.
* g++.dg/reflect/is_noexcept2.C: New test.
* g++.dg/reflect/is_noexcept3.C: New test.
* g++.dg/reflect/is_noexcept4.C: New test.
* g++.dg/reflect/is_nonstatic_data_member1.C: New test.
* g++.dg/reflect/is_object1.C: New test.
* g++.dg/reflect/is_object2.C: New test.
* g++.dg/reflect/is_operator_function1.C: New test.
* g++.dg/reflect/is_operator_function_template1.C: New test.
* g++.dg/reflect/is_override1.C: New test.
* g++.dg/reflect/is_pure_virtual1.C: New test.
* g++.dg/reflect/is_special_member_function1.C: New test.
* g++.dg/reflect/is_static_member1.C: New test.
* g++.dg/reflect/is_string_literal1.C: New test.
* g++.dg/reflect/is_structured_binding1.C: New test.
* g++.dg/reflect/is_structured_binding2.C: New test.
* g++.dg/reflect/is_template1.C: New test.
* g++.dg/reflect/is_template2.C: New test.
* g++.dg/reflect/is_type1.C: New test.
* g++.dg/reflect/is_type_alias1.C: New test.
* g++.dg/reflect/is_type_alias2.C: New test.
* g++.dg/reflect/is_type_alias3.C: New test.
* g++.dg/reflect/is_user_declared1.C: New test.
* g++.dg/reflect/is_user_declared2.C: New test.
* g++.dg/reflect/is_user_provided1.C: New test.
* g++.dg/reflect/is_user_provided2.C: New test.
* g++.dg/reflect/is_variable1.C: New test.
* g++.dg/reflect/is_variable_template1.C: New test.
* g++.dg/reflect/is_virtual1.C: New test.
* g++.dg/reflect/is_volatile1.C: New test.
* g++.dg/reflect/lex1.C: New test.
* g++.dg/reflect/lex2.C: New test.
* g++.dg/reflect/mangle1.C: New test.
* g++.dg/reflect/member-visibility1.C: New test.
* g++.dg/reflect/member-visibility2.C: New test.
* g++.dg/reflect/member1.C: New test.
* g++.dg/reflect/member10.C: New test.
* g++.dg/reflect/member11.C: New test.
* g++.dg/reflect/member12.C: New test.
* g++.dg/reflect/member13.C: New test.
* g++.dg/reflect/member14.C: New test.
* g++.dg/reflect/member15.C: New test.
* g++.dg/reflect/member16.C: New test.
* g++.dg/reflect/member17.C: New test.
* g++.dg/reflect/member18.C: New test.
* g++.dg/reflect/member19.C: New test.
* g++.dg/reflect/member2.C: New test.
* g++.dg/reflect/member20.C: New test.
* g++.dg/reflect/member3.C: New test.
* g++.dg/reflect/member4.C: New test.
* g++.dg/reflect/member5.C: New test.
* g++.dg/reflect/member6.C: New test.
* g++.dg/reflect/member7.C: New test.
* g++.dg/reflect/member8.C: New test.
* g++.dg/reflect/member9.C: New test.
* g++.dg/reflect/members_of1.C: New test.
* g++.dg/reflect/members_of2.C: New test.
* g++.dg/reflect/members_of3.C: New test.
* g++.dg/reflect/members_of4.C: New test.
* g++.dg/reflect/members_of5.C: New test.
* g++.dg/reflect/members_of6.C: New test.
* g++.dg/reflect/members_of7.C: New test.
* g++.dg/reflect/metafn-ptr1.C: New test.
* g++.dg/reflect/ns1.C: New test.
* g++.dg/reflect/ns2.C: New test.
* g++.dg/reflect/ns3.C: New test.
* g++.dg/reflect/ns4.C: New test.
* g++.dg/reflect/ns5.C: New test.
* g++.dg/reflect/ns6.C: New test.
* g++.dg/reflect/null1.C: New test.
* g++.dg/reflect/null2.C: New test.
* g++.dg/reflect/null3.C: New test.
* g++.dg/reflect/null4.C: New test.
* g++.dg/reflect/null5.C: New test.
* g++.dg/reflect/object_of1.C: New test.
* g++.dg/reflect/object_of2.C: New test.
* g++.dg/reflect/odr1.C: New test.
* g++.dg/reflect/offset_of1.C: New test.
* g++.dg/reflect/operator_of1.C: New test.
* g++.dg/reflect/override1.C: New test.
* g++.dg/reflect/p2996-1.C: New test.
* g++.dg/reflect/p2996-10.C: New test.
* g++.dg/reflect/p2996-11.C: New test.
* g++.dg/reflect/p2996-12.C: New test.
* g++.dg/reflect/p2996-13.C: New test.
* g++.dg/reflect/p2996-14.C: New test.
* g++.dg/reflect/p2996-15.C: New test.
* g++.dg/reflect/p2996-16.C: New test.
* g++.dg/reflect/p2996-17.C: New test.
* g++.dg/reflect/p2996-18.C: New test.
* g++.dg/reflect/p2996-19.C: New test.
* g++.dg/reflect/p2996-2.C: New test.
* g++.dg/reflect/p2996-20.C: New test.
* g++.dg/reflect/p2996-21.C: New test.
* g++.dg/reflect/p2996-3.C: New test.
* g++.dg/reflect/p2996-4.C: New test.
* g++.dg/reflect/p2996-5.C: New test.
* g++.dg/reflect/p2996-6.C: New test.
* g++.dg/reflect/p2996-7.C: New test.
* g++.dg/reflect/p2996-8.C: New test.
* g++.dg/reflect/p2996-9.C: New test.
* g++.dg/reflect/p3394-1.C: New test.
* g++.dg/reflect/p3491-1.C: New test.
* g++.dg/reflect/p3491-2.C: New test.
* g++.dg/reflect/p3491-3.C: New test.
* g++.dg/reflect/pack-index1.C: New test.
* g++.dg/reflect/parameters_of1.C: New test.
* g++.dg/reflect/parameters_of2.C: New test.
* g++.dg/reflect/parameters_of3.C: New test.
* g++.dg/reflect/parameters_of4.C: New test.
* g++.dg/reflect/parameters_of5.C: New test.
* g++.dg/reflect/parameters_of6.C: New test.
* g++.dg/reflect/parent_of1.C: New test.
* g++.dg/reflect/parm1.C: New test.
* g++.dg/reflect/parm2.C: New test.
* g++.dg/reflect/parm3.C: New test.
* g++.dg/reflect/parm4.C: New test.
* g++.dg/reflect/pr122634-1.C: New test.
* g++.dg/reflect/pr122634-2.C: New test.
* g++.dg/reflect/qrn1.C: New test.
* g++.dg/reflect/qrn2.C: New test.
* g++.dg/reflect/range_args.C: New test.
* g++.dg/reflect/reflect_constant1.C: New test.
* g++.dg/reflect/reflect_constant2.C: New test.
* g++.dg/reflect/reflect_constant3.C: New test.
* g++.dg/reflect/reflect_constant4.C: New test.
* g++.dg/reflect/reflect_constant5.C: New test.
* g++.dg/reflect/reflect_constant6.C: New test.
* g++.dg/reflect/reflect_constant7.C: New test.
* g++.dg/reflect/reflect_constant8.C: New test.
* g++.dg/reflect/reflect_constant9.C: New test.
* g++.dg/reflect/reflect_constant_array1.C: New test.
* g++.dg/reflect/reflect_constant_array2.C: New test.
* g++.dg/reflect/reflect_constant_array3.C: New test.
* g++.dg/reflect/reflect_constant_array4.C: New test.
* g++.dg/reflect/reflect_constant_string1.C: New test.
* g++.dg/reflect/reflect_constant_string2.C: New test.
* g++.dg/reflect/reflect_function1.C: New test.
* g++.dg/reflect/reflect_function2.C: New test.
* g++.dg/reflect/reflect_object1.C: New test.
* g++.dg/reflect/reflect_object2.C: New test.
* g++.dg/reflect/reflect_object3.C: New test.
* g++.dg/reflect/reflect_object4.C: New test.
* g++.dg/reflect/return_type_of1.C: New test.
* g++.dg/reflect/return_type_of2.C: New test.
* g++.dg/reflect/serialize1.C: New test.
* g++.dg/reflect/serialize2.C: New test.
* g++.dg/reflect/size_of1.C: New test.
* g++.dg/reflect/source_location_of1.C: New test.
* g++.dg/reflect/source_location_of2.C: New test.
* g++.dg/reflect/splice1.C: New test.
* g++.dg/reflect/splice2.C: New test.
* g++.dg/reflect/splice3.C: New test.
* g++.dg/reflect/splice4.C: New test.
* g++.dg/reflect/splice5.C: New test.
* g++.dg/reflect/splice6.C: New test.
* g++.dg/reflect/splice7.C: New test.
* g++.dg/reflect/splicing-base1.C: New test.
* g++.dg/reflect/splicing-base2.C: New test.
* g++.dg/reflect/splicing-base3.C: New test.
* g++.dg/reflect/splicing-base4.C: New test.
* g++.dg/reflect/storage_duration1.C: New test.
* g++.dg/reflect/storage_duration2.C: New test.
* g++.dg/reflect/storage_duration3.C: New test.
* g++.dg/reflect/subobjects_of1.C: New test.
* g++.dg/reflect/substitute1.C: New test.
* g++.dg/reflect/substitute2.C: New test.
* g++.dg/reflect/symbol_of1.C: New test.
* g++.dg/reflect/symbol_of2.C: New test.
* g++.dg/reflect/template_arguments_of1.C: New test.
* g++.dg/reflect/template_arguments_of2.C: New test.
* g++.dg/reflect/template_arguments_of3.C: New test.
* g++.dg/reflect/template_of1.C: New test.
* g++.dg/reflect/template_of2.C: New test.
* g++.dg/reflect/template_of3.C: New test.
* g++.dg/reflect/tuple1.C: New test.
* g++.dg/reflect/tuple2.C: New test.
* g++.dg/reflect/type1.C: New test.
* g++.dg/reflect/type10.C: New test.
* g++.dg/reflect/type2.C: New test.
* g++.dg/reflect/type3.C: New test.
* g++.dg/reflect/type4.C: New test.
* g++.dg/reflect/type5.C: New test.
* g++.dg/reflect/type6.C: New test.
* g++.dg/reflect/type7.C: New test.
* g++.dg/reflect/type8.C: New test.
* g++.dg/reflect/type9.C: New test.
* g++.dg/reflect/type_of1.C: New test.
* g++.dg/reflect/type_of2.C: New test.
* g++.dg/reflect/type_rels1.C: New test.
* g++.dg/reflect/type_trait1.C: New test.
* g++.dg/reflect/type_trait10.C: New test.
* g++.dg/reflect/type_trait11.C: New test.
* g++.dg/reflect/type_trait12.C: New test.
* g++.dg/reflect/type_trait13.C: New test.
* g++.dg/reflect/type_trait2.C: New test.
* g++.dg/reflect/type_trait3.C: New test.
* g++.dg/reflect/type_trait4.C: New test.
* g++.dg/reflect/type_trait5.C: New test.
* g++.dg/reflect/type_trait6.C: New test.
* g++.dg/reflect/type_trait8.C: New test.
* g++.dg/reflect/type_trait9.C: New test.
* g++.dg/reflect/u8display_string_of1.C: New test.
* g++.dg/reflect/u8identifier_of1.C: New test.
* g++.dg/reflect/u8symbol_of1.C: New test.
* g++.dg/reflect/underlying_type1.C: New test.
* g++.dg/reflect/using1.C: New test.
* g++.dg/reflect/value_or_object1.C: New test.
* g++.dg/reflect/variable_of1.C: New test.
* g++.dg/reflect/variable_of2.C: New test.
* g++.dg/reflect/variable_of3.C: New test.
* g++.dg/reflect/variant1.C: New test.
* g++.dg/reflect/variant2.C: New test.
* g++.dg/reflect/vector1.C: New test.
* g++.dg/reflect/visibility1.C: New test.
Co-authored-by: Jakub Jelinek <jakub@redhat.com>
Signed-off-by: Valentyn Yukhymenko <vyuhimenko@bloomberg.net>
Signed-off-by: Alex Yesmanchyk <ayesmanchyk@bloomberg.net>
Signed-off-by: Michael Levine <mlevine55@bloomberg.net>
Reviewed-by: Jason Merrill <jason@redhat.com>
|
||
|
Jakub Jelinek
|
254a858ae7 | Update copyright years. | ||
|
Jonathan Wakely
|
c7136f5b37 |
libstdc++: Remove redundant diagnostic pragmas from <bits/iterator_concepts.h>
Since r16-2190-g4faa42ac0dee2c this header no longer mentions __int128 explicitly, because it's just handled like other integer types now. So we don't need the diagnostic pragmas to disables pedwarns for referring to __int128. libstdc++-v3/ChangeLog: * include/bits/iterator_concepts.h: Remove diagnostic pragmas. |
||
|
Jonathan Wakely
|
d99c6786c3 |
libstdc++: Use consteval for _S_noexcept() helper functions
These _S_noexcept() functions are only used in noexcept-specifiers and never need to be called at runtime. They can be immediate functions, i.e. consteval. libstdc++-v3/ChangeLog: * include/bits/iterator_concepts.h (_IterMove::_S_noexcept) (_IterSwap::_S_noexcept): Change constexpr to consteval. * include/bits/ranges_base.h (_Begin::_S_noexcept) (_End::_S_noexcept, _RBegin::_S_noexcept, _REnd::_S_noexcept) (_Size::_S_noexcept, _Empty::_S_noexcept, _Data::_S_noexcept): Likewise. * include/std/concepts (_Swap::_S_noexcept): Likewise. Reviewed-by: Tomasz Kamiński <tkaminsk@redhat.com> |
||
|
Jonathan Wakely
|
4faa42ac0d |
libstdc++: Treat __int128 as a real integral type [PR96710]
Since LWG 3828 (included in C++23) implementations are allowed to have extended integer types that are wider than intmax_t. This means we no longer have to make is_integral_v<__int128> false for strict -std=c++23 mode, removing the confusing inconsistency with -std=gnu++23 (where is_integral_v<__int128> is true). This change makes __int128 a true integral type for all modes, treating LWG 3828 as a DR for previous standards. Most of the change just involves removing special cases where we wanted to treat __int128 and unsigned __int128 as integral types even when is_integral_v was false. There are still some preprocessor conditionals needed, because on some targets the compiler defines the macro __GLIBCXX_TYPE_INT_N_0 as __int128 in non-strict modes. Because we define explicit specializations of templates such as is_integral for all the INT_N types, we already have a specialization of is_integral<__int128> in non-strict modes, and so to avoid a redefinition we only must only define is_integral<__int128> for strict modes. libstdc++-v3/ChangeLog: PR libstdc++/96710 * include/bits/cpp_type_traits.h (__is_integer): Define explicit specializations for __int128. (__memcpyable_integer): Remove explicit specializations for __int128. * include/bits/iterator_concepts.h (incrementable_traits): Likewise. (__is_signed_int128, __is_unsigned_int128, __is_int128): Remove. (__is_integer_like, __is_signed_integer_like): Remove check for __int128. * include/bits/max_size_type.h: Remove all uses of __is_int128 in constraints. * include/bits/ranges_base.h (__to_unsigned_like): Remove overloads for __int128. (ranges::ssize): Remove special case for __int128. * include/bits/stl_algobase.h (__size_to_integer): Define __int128 overloads for strict modes. * include/ext/numeric_traits.h (__is_integer_nonstrict): Remove explicit specializations for __int128. * include/std/charconv (to_chars): Define overloads for __int128. * include/std/format (__format::make_unsigned_t): Remove. (__format::to_chars): Remove. * include/std/limits (numeric_limits): Define explicit specializations for __int128. * include/std/type_traits (__is_integral_helper): Likewise. (__make_unsigned, __make_signed): Likewise. Reviewed-by: Patrick Palka <ppalka@redhat.com> |
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Patrick Palka
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e73a6d9827 |
libstdc++: Implement P0849R8 auto(x) library changes
This implements the library changes in P0849R8 "auto(x): decay-copy in the language" which consist of replacing most uses of the exposition-only function decay-copy with auto(x) throughout the library wording. We implement this as a DR against C++20 since there should be no behavior change in practice (especially in light of LWG 3724 which makes decay-copy SFINAE-friendly). The main difference between decay-copy and auto(x) is that decay-copy materializes its argument unlike auto(x), and so the latter is a no-op when its argument is a prvalue. Effectively the former could introduce an unnecessary move constructor call in some contexts. In C++20 and earlier we could emulate auto(x) with decay_t<decltype((x))>(x). After this paper the only remaining uses of decay-copy in the standard are in the specification of some range adaptors. In our implementation of those range adaptors I believe decay-copy is already implied which is why we don't use __decay_copy explicitly there. So since it's apparently no longer needed this patch goes ahead and removes __decay_copy. libstdc++-v3/ChangeLog: * include/bits/c++config (_GLIBCXX_AUTO_CAST): Define. * include/bits/iterator_concepts.h (_Decay_copy, __decay_copy): Remove. (__member_begin, __adl_begin): Use _GLIBCXX_AUTO_CAST instead of __decay_copy as per P0849R8. * include/bits/ranges_base.h (_Begin): Likewise. (__member_end, __adl_end, _End): Likewise. (__member_rbegin, __adl_rbegin, _RBegin): Likewise. (__member_rend, __adl_rend, _Rend): Likewise. (__member_size, __adl_size, _Size): Likewise. (_Data): Likewise. Reviewed-by: Jonathan Wakely <jwakely@redhat.com> |
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Patrick Palka
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49e79b8693 |
Revert "libstdc++: Optimize std::projected<I, std::identity>" [PR119888]
This non-standard optimization breaks real-world code that expects the
result of std::projected to always (be a class type and) have a value_type
member, which isn't true for e.g. I=int*, so revert it for now.
PR libstdc++/119888
This reverts commit
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Jonathan Wakely
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3e52eb28c5 |
libstdc++: Fix std::ranges::iter_move for function references [PR119469]
The result of std::move (or a cast to an rvalue reference) on a function reference is always an lvalue. Because std::ranges::iter_move was using the type std::remove_reference_t<X>&& as the result of std::move, it was giving the wrong type for function references. Use a decltype-specifier with declval<remove_reference_t<X>>() instead of just using the remove_reference_t<X>&& type directly. This gives the right result, while still avoiding the cost of doing overload resolution for std::move. libstdc++-v3/ChangeLog: PR libstdc++/119469 * include/bits/iterator_concepts.h (_IterMove::__result): Use decltype-specifier instead of an explicit type. * testsuite/24_iterators/customization_points/iter_move.cc: Check results for function references. Reviewed-by: Tomasz Kamiński <tkaminsk@redhat.com> |
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Jonathan Wakely
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a8ee522c59 |
libstdc++: Fix ranges::iter_move handling of rvalues [PR106612]
The specification for std::ranges::iter_move apparently requires us to handle types which do not satisfy std::indirectly_readable, for example with overloaded operator* which behaves differently for different value categories. libstdc++-v3/ChangeLog: PR libstdc++/106612 * include/bits/iterator_concepts.h (_IterMove::__iter_ref_t): New alias template. (_IterMove::__result): Use __iter_ref_t instead of std::iter_reference_t. (_IterMove::__type): Remove incorrect __dereferenceable constraint. (_IterMove::operator()): Likewise. Add correct constraints. Use __iter_ref_t instead of std::iter_reference_t. Forward parameter as correct value category. (iter_swap): Add comments. * testsuite/24_iterators/customization_points/iter_move.cc: Test that iter_move is found by ADL and that rvalue arguments are handled correctly. Reviewed-by: Patrick Palka <ppalka@redhat.com> |
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Jakub Jelinek
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6441eb6dc0 | Update copyright years. | ||
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Jonathan Wakely
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7f65f94917 |
libstdc++: Implement LWG 3798 for range adaptors [PR106676]
LWG 3798 modified the iterator_category of the iterator types for transform_view, join_with_view, zip_transform_view and adjacent_transform_view, to allow the iterator's reference type to be an rvalue reference. libstdc++-v3/ChangeLog: PR libstdc++/106676 * include/bits/iterator_concepts.h (__cpp17_fwd_iterator): Use is_reference instead of is_value_reference. rvalue references. * include/std/ranges (transform_view:__iter_cat::_S_iter_cat): Likewise. (zip_transform_view::__iter_cat::_S_iter_cat): Likewise. (adjacent_transform_view::__iter_cat::_S_iter_cat): Likewise. (join_with_view::__iter_cat::_S_iter_cat): Likewise. * testsuite/std/ranges/adaptors/transform.cc: Check iterator_category when the transformation function returns an rvalue reference type. Reviewed-by: Patrick Palka <ppalka@redhat.com> |
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Jason Merrill
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63a598deb0 |
libstdc++: #ifdef out #pragma GCC system_header
In r15-3714-gd3a7302ec5985a I added -Wsystem-headers to the libstdc++ build flags to help catch problems in the library. This patch takes a different approach, of disabling the #pragma system_header unless _GLIBCXX_SYSHDR is defined. As a result, the testsuites will treat them as non-system-headers to get better warning coverage during regression testing of both gcc and libstdc++, not just when building the library. My rationale for the #ifdef instead of just removing the #pragma is the three G++ tests that want to test libstdc++ system header behavior, so we need a way to select it. This doesn't affect installed libraries, as they get their system-header status from the lookup path. But testsuite_flags --build-includes gives -I directives rather than -isystem. This patch doesn't change the headers in config/ because I'm not compiling with most of them, so won't see any warnings that need fixing. Adjusting them could happen later, or we can not bother. libstdc++-v3/ChangeLog: * acinclude.m4 (WARN_FLAGS): Remove -Wsystem-headers. * configure: Regenerate. * include/bits/algorithmfwd.h: #ifdef out #pragma GCC system_header. * include/bits/atomic_base.h * include/bits/atomic_futex.h * include/bits/atomic_timed_wait.h * include/bits/atomic_wait.h * include/bits/basic_ios.h * include/bits/basic_string.h * include/bits/boost_concept_check.h * include/bits/char_traits.h * include/bits/charconv.h * include/bits/chrono.h * include/bits/chrono_io.h * include/bits/codecvt.h * include/bits/concept_check.h * include/bits/cpp_type_traits.h * include/bits/elements_of.h * include/bits/enable_special_members.h * include/bits/erase_if.h * include/bits/forward_list.h * include/bits/functional_hash.h * include/bits/gslice.h * include/bits/gslice_array.h * include/bits/hashtable.h * include/bits/indirect_array.h * include/bits/invoke.h * include/bits/ios_base.h * include/bits/iterator_concepts.h * include/bits/locale_classes.h * include/bits/locale_facets.h * include/bits/locale_facets_nonio.h * include/bits/localefwd.h * include/bits/mask_array.h * include/bits/max_size_type.h * include/bits/memory_resource.h * include/bits/memoryfwd.h * include/bits/move_only_function.h * include/bits/node_handle.h * include/bits/ostream_insert.h * include/bits/out_ptr.h * include/bits/parse_numbers.h * include/bits/postypes.h * include/bits/quoted_string.h * include/bits/range_access.h * include/bits/ranges_base.h * include/bits/refwrap.h * include/bits/sat_arith.h * include/bits/semaphore_base.h * include/bits/slice_array.h * include/bits/std_abs.h * include/bits/std_function.h * include/bits/std_mutex.h * include/bits/std_thread.h * include/bits/stl_iterator_base_funcs.h * include/bits/stl_iterator_base_types.h * include/bits/stl_tree.h * include/bits/stream_iterator.h * include/bits/streambuf_iterator.h * include/bits/stringfwd.h * include/bits/this_thread_sleep.h * include/bits/unique_lock.h * include/bits/uses_allocator_args.h * include/bits/utility.h * include/bits/valarray_after.h * include/bits/valarray_array.h * include/bits/valarray_before.h * include/bits/version.h * include/c_compatibility/fenv.h * include/c_compatibility/inttypes.h * include/c_compatibility/stdint.h * include/decimal/decimal.h * include/experimental/bits/net.h * include/experimental/bits/shared_ptr.h * include/ext/aligned_buffer.h * include/ext/alloc_traits.h * include/ext/atomicity.h * include/ext/concurrence.h * include/ext/numeric_traits.h * include/ext/pod_char_traits.h * include/ext/pointer.h * include/ext/stdio_filebuf.h * include/ext/stdio_sync_filebuf.h * include/ext/string_conversions.h * include/ext/type_traits.h * include/ext/vstring.h * include/ext/vstring_fwd.h * include/ext/vstring_util.h * include/parallel/algorithmfwd.h * include/parallel/numericfwd.h * include/tr1/functional_hash.h * include/tr1/hashtable.h * include/tr1/random.h * libsupc++/exception.h * libsupc++/hash_bytes.h * include/bits/basic_ios.tcc * include/bits/basic_string.tcc * include/bits/fstream.tcc * include/bits/istream.tcc * include/bits/locale_classes.tcc * include/bits/locale_facets.tcc * include/bits/locale_facets_nonio.tcc * include/bits/ostream.tcc * include/bits/sstream.tcc * include/bits/streambuf.tcc * include/bits/string_view.tcc * include/bits/version.tpl * include/experimental/bits/string_view.tcc * include/ext/pb_ds/detail/resize_policy/hash_prime_size_policy_imp.hpp * include/ext/random.tcc * include/ext/vstring.tcc * include/tr2/bool_set.tcc * include/tr2/dynamic_bitset.tcc * include/bits/c++config * include/c/cassert * include/c/cctype * include/c/cerrno * include/c/cfloat * include/c/ciso646 * include/c/climits * include/c/clocale * include/c/cmath * include/c/csetjmp * include/c/csignal * include/c/cstdarg * include/c/cstddef * include/c/cstdio * include/c/cstdlib * include/c/cstring * include/c/ctime * include/c/cuchar * include/c/cwchar * include/c/cwctype * include/c_global/cassert * include/c_global/ccomplex * include/c_global/cctype * include/c_global/cerrno * include/c_global/cfenv * include/c_global/cfloat * include/c_global/cinttypes * include/c_global/ciso646 * include/c_global/climits * include/c_global/clocale * include/c_global/cmath * include/c_global/csetjmp * include/c_global/csignal * include/c_global/cstdalign * include/c_global/cstdarg * include/c_global/cstdbool * include/c_global/cstddef * include/c_global/cstdint * include/c_global/cstdio * include/c_global/cstdlib * include/c_global/cstring * include/c_global/ctgmath * include/c_global/ctime * include/c_global/cuchar * include/c_global/cwchar * include/c_global/cwctype * include/c_std/cassert * include/c_std/cctype * include/c_std/cerrno * include/c_std/cfloat * include/c_std/ciso646 * include/c_std/climits * include/c_std/clocale * include/c_std/cmath * include/c_std/csetjmp * include/c_std/csignal * include/c_std/cstdarg * include/c_std/cstddef * include/c_std/cstdio * include/c_std/cstdlib * include/c_std/cstring * include/c_std/ctime * include/c_std/cuchar * include/c_std/cwchar * include/c_std/cwctype * include/debug/array * include/debug/bitset * include/debug/deque * include/debug/forward_list * include/debug/list * include/debug/map * include/debug/set * include/debug/string * include/debug/unordered_map * include/debug/unordered_set * include/debug/vector * include/decimal/decimal * include/experimental/algorithm * include/experimental/any * include/experimental/array * include/experimental/buffer * include/experimental/chrono * include/experimental/contract * include/experimental/deque * include/experimental/executor * include/experimental/filesystem * include/experimental/forward_list * include/experimental/functional * include/experimental/internet * include/experimental/io_context * include/experimental/iterator * include/experimental/list * include/experimental/map * include/experimental/memory * include/experimental/memory_resource * include/experimental/net * include/experimental/netfwd * include/experimental/numeric * include/experimental/propagate_const * include/experimental/ratio * include/experimental/regex * include/experimental/scope * include/experimental/set * include/experimental/socket * include/experimental/string * include/experimental/string_view * include/experimental/synchronized_value * include/experimental/system_error * include/experimental/timer * include/experimental/tuple * include/experimental/type_traits * include/experimental/unordered_map * include/experimental/unordered_set * include/experimental/vector * include/ext/algorithm * include/ext/cmath * include/ext/functional * include/ext/iterator * include/ext/memory * include/ext/numeric * include/ext/random * include/ext/rb_tree * include/ext/rope * include/parallel/algorithm * include/std/algorithm * include/std/any * include/std/array * include/std/atomic * include/std/barrier * include/std/bit * include/std/bitset * include/std/charconv * include/std/chrono * include/std/codecvt * include/std/complex * include/std/concepts * include/std/condition_variable * include/std/coroutine * include/std/deque * include/std/execution * include/std/expected * include/std/filesystem * include/std/format * include/std/forward_list * include/std/fstream * include/std/functional * include/std/future * include/std/generator * include/std/iomanip * include/std/ios * include/std/iosfwd * include/std/iostream * include/std/istream * include/std/iterator * include/std/latch * include/std/limits * include/std/list * include/std/locale * include/std/map * include/std/memory * include/std/memory_resource * include/std/mutex * include/std/numbers * include/std/numeric * include/std/optional * include/std/ostream * include/std/print * include/std/queue * include/std/random * include/std/ranges * include/std/ratio * include/std/regex * include/std/scoped_allocator * include/std/semaphore * include/std/set * include/std/shared_mutex * include/std/span * include/std/spanstream * include/std/sstream * include/std/stack * include/std/stacktrace * include/std/stdexcept * include/std/streambuf * include/std/string * include/std/string_view * include/std/syncstream * include/std/system_error * include/std/text_encoding * include/std/thread * include/std/tuple * include/std/type_traits * include/std/typeindex * include/std/unordered_map * include/std/unordered_set * include/std/utility * include/std/valarray * include/std/variant * include/std/vector * include/std/version * include/tr1/array * include/tr1/cfenv * include/tr1/cinttypes * include/tr1/cmath * include/tr1/complex * include/tr1/cstdbool * include/tr1/cstdint * include/tr1/cstdio * include/tr1/cstdlib * include/tr1/cwchar * include/tr1/cwctype * include/tr1/functional * include/tr1/memory * include/tr1/random * include/tr1/regex * include/tr1/tuple * include/tr1/type_traits * include/tr1/unordered_map * include/tr1/unordered_set * include/tr1/utility * include/tr2/bool_set * include/tr2/dynamic_bitset * include/tr2/type_traits * libsupc++/atomic_lockfree_defines.h * libsupc++/compare * libsupc++/cxxabi.h * libsupc++/cxxabi_forced.h * libsupc++/cxxabi_init_exception.h * libsupc++/exception * libsupc++/initializer_list * libsupc++/new * libsupc++/typeinfo: Likewise. * testsuite/20_util/ratio/operations/ops_overflow_neg.cc * testsuite/23_containers/array/tuple_interface/get_neg.cc * testsuite/23_containers/vector/cons/destructible_debug_neg.cc * testsuite/24_iterators/operations/prev_neg.cc * testsuite/ext/type_traits/add_unsigned_floating_neg.cc * testsuite/ext/type_traits/add_unsigned_integer_neg.cc * testsuite/ext/type_traits/remove_unsigned_floating_neg.cc * testsuite/ext/type_traits/remove_unsigned_integer_neg.cc: Adjust line numbers. gcc/testsuite/ChangeLog * g++.dg/analyzer/fanalyzer-show-events-in-system-headers-default.C * g++.dg/analyzer/fanalyzer-show-events-in-system-headers-no.C * g++.dg/diagnostic/disable.C: #define _GLIBCXX_SYSHDR. |
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Jonathan Wakely
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dc47add792 |
libstdc++: add default template parameters to algorithms
This implements P2248R8 + P3217R0, both approved for C++26. The changes are mostly mechanical; the struggle is to keep readability with the pre-P2248 signatures. * For containers, "classic STL" algorithms and their parallel versions, introduce a macro and amend their declarations/definitions with it. The macro either expands to the defaulted parameter or to nothing in pre-C++26 modes. * For range algorithms, we need to reorder their template parameters. I've done so unconditionally, because users cannot rely on template parameters of algorithms (this is explicitly authorized by [algorithms.requirements]/15). The defaults are then hidden behind another macro. libstdc++-v3/ChangeLog: * include/bits/iterator_concepts.h: Add projected_value_t. * include/bits/algorithmfwd.h: Add the default template parameter to the relevant forward declarations. * include/pstl/glue_algorithm_defs.h: Likewise. * include/bits/ranges_algo.h: Add the default template parameter to range-based algorithms. * include/bits/ranges_algobase.h: Likewise. * include/bits/ranges_util.h: Likewise. * include/bits/ranges_base.h: Add helper macros. * include/bits/stl_iterator_base_types.h: Add helper macro. * include/bits/version.def: Add the new feature-testing macro. * include/bits/version.h: Regenerate. * include/std/algorithm: Pull the feature-testing macro. * include/std/ranges: Likewise. * include/std/deque: Pull the feature-testing macro, add the default for std::erase. * include/std/forward_list: Likewise. * include/std/list: Likewise. * include/std/string: Likewise. * include/std/vector: Likewise. * testsuite/23_containers/default_template_value.cc: New test. * testsuite/25_algorithms/default_template_value.cc: New test. Signed-off-by: Giuseppe D'Angelo <giuseppe.dangelo@kdab.com> Co-authored-by: Jonathan Wakely <jwakely@redhat.com> |
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Jason Merrill
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d3a7302ec5 |
libstdc++: add #pragma diagnostic
The use of #pragma GCC system_header in libstdc++ has led to bugs going undetected for a while due to the silencing of compiler warnings that would have revealed them promptly, and also interferes with warnings about problematic template instantiations induced by user code. But removing it, or even compiling with -Wsystem-header, is also problematic due to warnings about deliberate uses of extensions. So this patch adds #pragma GCC diagnostic as needed to suppress these warnings. The change to acinclude.m4 changes -Wabi to warn only in comparison to ABI 19, to avoid lots of warnings that we now mangle concept requirements, which are in any case still experimental. I checked for any other changes against ABI v15, and found only the <format> lambda mangling, which we can ignore. This also enables -Wsystem-headers while building the library, so we see any warnings not silenced by these #pragmas. libstdc++-v3/ChangeLog: * include/bits/algorithmfwd.h: * include/bits/allocator.h: * include/bits/codecvt.h: * include/bits/concept_check.h: * include/bits/cpp_type_traits.h: * include/bits/hashtable.h: * include/bits/iterator_concepts.h: * include/bits/ostream_insert.h: * include/bits/ranges_base.h: * include/bits/regex_automaton.h: * include/bits/std_abs.h: * include/bits/stl_algo.h: * include/c_compatibility/fenv.h: * include/c_compatibility/inttypes.h: * include/c_compatibility/stdint.h: * include/ext/concurrence.h: * include/ext/type_traits.h: * testsuite/ext/type_traits/add_unsigned_floating_neg.cc: * testsuite/ext/type_traits/add_unsigned_integer_neg.cc: * testsuite/ext/type_traits/remove_unsigned_floating_neg.cc: * testsuite/ext/type_traits/remove_unsigned_integer_neg.cc: * include/bits/basic_ios.tcc: * include/bits/basic_string.tcc: * include/bits/fstream.tcc: * include/bits/istream.tcc: * include/bits/locale_classes.tcc: * include/bits/locale_facets.tcc: * include/bits/ostream.tcc: * include/bits/regex_compiler.tcc: * include/bits/sstream.tcc: * include/bits/streambuf.tcc: * configure: Regenerate. * include/bits/c++config: * include/c/cassert: * include/c/cctype: * include/c/cerrno: * include/c/cfloat: * include/c/climits: * include/c/clocale: * include/c/cmath: * include/c/csetjmp: * include/c/csignal: * include/c/cstdarg: * include/c/cstddef: * include/c/cstdio: * include/c/cstdlib: * include/c/cstring: * include/c/ctime: * include/c/cwchar: * include/c/cwctype: * include/c_global/climits: * include/c_global/cmath: * include/c_global/cstddef: * include/c_global/cstdlib: * include/decimal/decimal: * include/ext/rope: * include/std/any: * include/std/charconv: * include/std/complex: * include/std/coroutine: * include/std/format: * include/std/iomanip: * include/std/limits: * include/std/numbers: * include/tr1/functional: * include/tr1/tuple: * include/tr1/type_traits: * libsupc++/compare: * libsupc++/new: Add #pragma GCC diagnostic to suppress undesired warnings. * acinclude.m4: Change -Wabi version from 2 to 19. gcc/ChangeLog: * ginclude/stdint-wrap.h: Add #pragma GCC diagnostic to suppress undesired warnings. * gsyslimits.h: Likewise. |
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Patrick Palka
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51761c50f8 |
libstdc++: Optimize std::projected<I, std::identity>
Algorithms that are generalized to take projections typically default the projection to std::identity, which is equivalent to no projection at all. In that case, I believe we could shortcut the projection logic to return the iterator unchanged rather than wrapping it. This should reduce compile times especially after P2609R3 which made the indirect invocability concepts more expensive to check when actual projections are involved. libstdc++-v3/ChangeLog: * include/bits/iterator_concepts.h (__detail::__projected): Define an optimized partial specialization for when the projection is std::identity. * testsuite/24_iterators/indirect_callable/projected.cc: Verify the optimization. Reviewed-by: Jonathan Wakely <jwakely@redhat.com> |
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Patrick Palka
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620232426b |
libstdc++: Implement P2997R1 changes to the indirect invocability concepts
This implements the changes of this C++26 paper as a DR against C++20. In passing this patch removes the std/ranges/version_c++23.cc test which is now mostly obsolete after the version.def FTM refactoring, and instead expands the __cpp_lib_ranges checks in another test so that it verifies the exact value of the FTM on a per language version basis. libstdc++-v3/ChangeLog: * include/bits/iterator_concepts.h (indirectly_unary_invocable): Relax as per P2997R1. (indirectly_regular_unary_invocable): Likewise. (indirect_unary_predicate): Likewise. (indirect_binary_predicate): Likewise. (indirect_equivalence_relation): Likewise. (indirect_strict_weak_order): Likewise. * include/bits/version.def (ranges): Update value for C++26. * include/bits/version.h: Regenerate. * testsuite/24_iterators/indirect_callable/p2997r1.cc: New test. * testsuite/std/ranges/version_c++23.cc: Remove. * testsuite/std/ranges/headers/ranges/synopsis.cc: Refine the __cpp_lib_ranges checks. Reviewed-by: Jonathan Wakely <jwakely@redhat.com> |
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Patrick Palka
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b552730faf |
libstdc++: Implement P2609R3 changes to the indirect invocability concepts
This implements the changes of this C++23 paper as a DR against C++20. Note that after the later P2538R1 "ADL-proof std::projected" (which we already implement), we can't use a simple partial specialization to match specializations of the 'projected' alias template. So instead we identify such specializations using a pair of distinguishing member aliases. libstdc++-v3/ChangeLog: * include/bits/iterator_concepts.h (__detail::__indirect_value): Define. (__indirect_value_t): Define as per P2609R3. (iter_common_reference_t): Adjust as per P2609R3. (indirectly_unary_invocable): Likewise. (indirectly_regular_unary_invocable): Likewise. (indirect_unary_predicate): Likewise. (indirect_binary_predicate): Likewise. (indirect_equivalence_relation): Likewise. (indirect_strict_weak_order): Likewise. (__detail::__projected::__type): Define member aliases __projected_Iter and __projected_Proj providing the template arguments of the current specialization. * include/bits/version.def (ranges): Update value. * include/bits/version.h: Regenerate. * testsuite/24_iterators/indirect_callable/p2609r3.cc: New test. * testsuite/std/ranges/version_c++23.cc: Update expected value of __cpp_lib_ranges macro. Reviewed-by: Jonathan Wakely <jwakely@redhat.com> |
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Jakub Jelinek
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a945c346f5 | Update copyright years. | ||
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Jonathan Wakely
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6854e3ac71 |
libstdc++: Simplify C++20 poison pill overloads (P2602R2)
This implements the C++23 change "Poison Pills are Too Toxic". This makes sense to do unconditionally for C++20, as the corner cases that it fixes are considered to be defects in the C++20 design (e.g. LWG3480 was needed to fix directory iterators because of these pills being too toxic). libstdc++-v3/ChangeLog: * include/bits/iterator_concepts.h (__imove::iter_move): Define poison pill as deleted for consistency. (__access::begin): Replace with a single declaration. * include/bits/ranges_base.h (__access::end, __access::rbegin) (__access::rend, __access::size): Likewise. * include/bits/version.def (ranges): Update value for C++23. * include/bits/version.h: Regenerate. * libsupc++/compare (__compare): Add missing poison pill overloads. * testsuite/std/ranges/version_c++23.cc: Adjust expected value of __cpp_lib_ranges. * testsuite/std/ranges/access/p2602.cc: New test. |
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Jonathan Wakely
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faea9d92db |
libstdc++: Rename C++20 Customization Point Objects
This makes the naming of the CPO types and namespaces simpler and more consistent. With this change the string "cust" won't appear in diagnostics related to these CPOs, which avoids confusion about what it means (customization? customer?). Users don't really need to care that these are called "customization point objects", so don't show them the string "cust". Names like "__imove::_IterMove" are preferable to names like "__cust_imove::_IMove" as the former is more obviously related to the public API "ranges::iter_move". Instead of a plethora of inline namespaces for all the different CPO objects, define them all in an inline namespace called _Cpo (which isn't shown to users anyway, unlike the types of those objects). libstdc++-v3/ChangeLog: * include/bits/iterator_concepts.h (ranges::__cust_imove): Rename to ranges::__imove. (_IMove): Rename to _IterMove. (ranges::__cust_iswap): Rename to ranges::__iswap. (ranges::__cust): Rename to ranges::_Cpo. (ranges::__cust_access): Rename to ranges::__access. * include/bits/ranges_base.h (ranges::__cust_access): Rename to ranges::__access. (ranges::__cust): Rename to ranges::_Cpo. * include/std/concepts (ranges::__cust_swap): Rename to ranges::__swap. (ranges::__cust): Rename to ranges::_Cpo. * libsupc++/compare (__cmp_cust): Rename to __compare. (__cmp_algo): Rename to _Cpo. |
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Jonathan Wakely
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49f2b325ec |
libstdc++: Add redundant 'typename' to std::projected
This is needed by Clang 15. libstdc++-v3/ChangeLog: * include/bits/iterator_concepts.h (projected): Add typename. |
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Jonathan Wakely
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6eafdfc73c |
libstdc++: Implement P2538R1 ADL-proof std::projected
This was recently approved for C++26, but there's no harm in implementing it unconditionally for C++20 and C++23. As it says in the paper, it doesn't change the meaning of any valid code. It only enables things that were previously ill-formed for questionable reasons. libstdc++-v3/ChangeLog: * include/bits/iterator_concepts.h (projected): Replace class template with alias template denoting an ADL-proofed helper. (incremental_traits<projected<Iter, Proj>>): Remove. * testsuite/24_iterators/indirect_callable/projected-adl.cc: New test. |
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Jakub Jelinek
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83ffe9cde7 | Update copyright years. | ||
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Jonathan Wakely
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db33daa467 |
libstdc++: Add comparisons to std::default_sentinel_t (LWG 3719)
This library defect was recently approved for C++23. libstdc++-v3/ChangeLog: * include/bits/fs_dir.h (directory_iterator): Add comparison with std::default_sentinel_t. Remove redundant operator!= for C++20. * (recursive_directory_iterator): Likewise. * include/bits/iterator_concepts.h [!__cpp_lib_concepts] (default_sentinel_t, default_sentinel): Define even if concepts are not supported. * include/bits/regex.h (regex_iterator): Add comparison with std::default_sentinel_t. Remove redundant operator!= for C++20. (regex_token_iterator): Likewise. (regex_token_iterator::_M_end_of_seq()): Add noexcept. * testsuite/27_io/filesystem/iterators/lwg3719.cc: New test. * testsuite/28_regex/iterators/regex_iterator/lwg3719.cc: New test. * testsuite/28_regex/iterators/regex_token_iterator/lwg3719.cc: New test. |
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Jakub Jelinek
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7adcbafe45 | Update copyright years. | ||
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Jonathan Wakely
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240b01b021 |
libstdc++: Add [[nodiscard]] to iterators and related utilities
This adds [[nodiscard]] throughout <iterator>, as proposed by P2377R0 (with some minor corrections). The attribute is added for all modes from C++11 up, using [[__nodiscard__]] or _GLIBCXX_NODISCARD where C++17 [[nodiscard]] can't be used directly. Signed-off-by: Jonathan Wakely <jwakely@redhat.com> libstdc++-v3/ChangeLog: * include/bits/iterator_concepts.h (iter_move): Add [[nodiscard]]. * include/bits/range_access.h (begin, end, cbegin, cend) (rbegin, rend, crbegin, crend, size, data, ssize): Likewise. * include/bits/ranges_base.h (ranges::begin, ranges::end) (ranges::cbegin, ranges::cend, ranges::rbegin, ranges::rend) (ranges::crbegin, ranges::crend, ranges::size, ranges::ssize) (ranges::empty, ranges::data, ranges::cdata): Likewise. * include/bits/stl_iterator.h (reverse_iterator, __normal_iterator) (back_insert_iterator, front_insert_iterator, insert_iterator) (move_iterator, move_sentinel, common_iterator) (counted_iterator): Likewise. * include/bits/stl_iterator_base_funcs.h (distance, next, prev): Likewise. * include/bits/stream_iterator.h (istream_iterator) (ostream_iterartor): Likewise. * include/bits/streambuf_iterator.h (istreambuf_iterator) (ostreambuf_iterator): Likewise. * include/std/ranges (views::single, views::iota, views::all) (views::filter, views::transform, views::take, views::take_while) (views::drop, views::drop_while, views::join, views::lazy_split) (views::split, views::counted, views::common, views::reverse) (views::elements): Likewise. * testsuite/20_util/rel_ops.cc: Use -Wno-unused-result. * testsuite/24_iterators/move_iterator/greedy_ops.cc: Likewise. * testsuite/24_iterators/normal_iterator/greedy_ops.cc: Likewise. * testsuite/24_iterators/reverse_iterator/2.cc: Likewise. * testsuite/24_iterators/reverse_iterator/greedy_ops.cc: Likewise. * testsuite/21_strings/basic_string/range_access/char/1.cc: Cast result to void. * testsuite/21_strings/basic_string/range_access/wchar_t/1.cc: Likewise. * testsuite/21_strings/basic_string_view/range_access/char/1.cc: Likewise. * testsuite/21_strings/basic_string_view/range_access/wchar_t/1.cc: Likewise. * testsuite/23_containers/array/range_access.cc: Likewise. * testsuite/23_containers/deque/range_access.cc: Likewise. * testsuite/23_containers/forward_list/range_access.cc: Likewise. * testsuite/23_containers/list/range_access.cc: Likewise. * testsuite/23_containers/map/range_access.cc: Likewise. * testsuite/23_containers/multimap/range_access.cc: Likewise. * testsuite/23_containers/multiset/range_access.cc: Likewise. * testsuite/23_containers/set/range_access.cc: Likewise. * testsuite/23_containers/unordered_map/range_access.cc: Likewise. * testsuite/23_containers/unordered_multimap/range_access.cc: Likewise. * testsuite/23_containers/unordered_multiset/range_access.cc: Likewise. * testsuite/23_containers/unordered_set/range_access.cc: Likewise. * testsuite/23_containers/vector/range_access.cc: Likewise. * testsuite/24_iterators/customization_points/iter_move.cc: Likewise. * testsuite/24_iterators/istream_iterator/sentinel.cc: Likewise. * testsuite/24_iterators/istreambuf_iterator/sentinel.cc: Likewise. * testsuite/24_iterators/move_iterator/dr2061.cc: Likewise. * testsuite/24_iterators/operations/prev_neg.cc: Likewise. * testsuite/24_iterators/ostreambuf_iterator/2.cc: Likewise. * testsuite/24_iterators/range_access/range_access.cc: Likewise. * testsuite/24_iterators/range_operations/100768.cc: Likewise. * testsuite/26_numerics/valarray/range_access2.cc: Likewise. * testsuite/28_regex/range_access.cc: Likewise. * testsuite/experimental/string_view/range_access/char/1.cc: Likewise. * testsuite/experimental/string_view/range_access/wchar_t/1.cc: Likewise. * testsuite/ext/vstring/range_access.cc: Likewise. * testsuite/std/ranges/adaptors/take.cc: Likewise. * testsuite/std/ranges/p2259.cc: Likewise. |
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Jonathan Wakely
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42167831ab |
libstdc++: Use __extension__ instead of diagnostic pragmas
This reverts
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Jonathan Wakely
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c1676651b6 |
libstdc++: Suppress pedantic warnings about __int128
With -std=c++NN -pedantic -Wsystem-headers there are warnings about the use of __int128, which can be suppressed using diagnostic pragmas. Signed-off-by: Jonathan Wakely <jwakely@redhat.com> libstdc++-v3/ChangeLog: * include/bits/cpp_type_traits.h: Add diagnostic pragmas around uses of non-standard integer types. * include/bits/functional_hash.h: Likewise. * include/bits/iterator_concepts.h: Likewise. * include/bits/max_size_type.h: Likewise. * include/bits/std_abs.h: Likewise. * include/bits/stl_algobase.h: Likewise. * include/bits/uniform_int_dist.h: Likewise. * include/ext/numeric_traits.h: Likewise. * include/std/type_traits: Likewise. |
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Patrick Palka
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4b4f5666b4 |
libstdc++: Implement P2325 changes to default-constructibility of views
This implements the wording changes of P2325R3 "Views should not be required to be default constructible". Changes are relatively straightforward, besides perhaps those to __box (which now stands for copyable-box instead of semiregular-box) and __non_propagating_cache. For __box, this patch implements the recommended practice to also avoid std::optional when the boxed type is nothrow_move/copy_constructible. For __non_propagating_cache, now that it's used by split_view::_M_current, we need to add assignment from a value of the underlying type to the subset of the std::optional API implemented for the cache (needed by split_view::begin()). Hence the new __non_propagating_cache::operator= overload. In passing, this fixes the undesirable list-init in the constructors of the partial specialization of __box as reported in PR100475 comment #7. libstdc++-v3/ChangeLog: * include/bits/iterator_concepts.h (weakly_incrementable): Remove default_initializable requirement. * include/bits/ranges_base.h (ranges::view): Likewise. * include/bits/ranges_util.h (subrange): Constrain the default ctor. * include/bits/stl_iterator.h (back_insert_iterator): Remove the default ctor. (front_insert_iterator): Likewise. (insert_iterator): Likewise. Remove NSDMIs. (common_iterator): Constrain the default ctor. (counted_iterator): Likewise. * include/bits/stream_iterator.h (ostream_iterator): Remove the default ctor. * include/std/ranges (__detail::__box::operator=): Handle self-assignment in the primary template. (__detail::__box): In the partial specialization: adjust constraints as per P2325. Add specialized operator= for the case when the wrapped type is not copyable. Constrain the default ctor. Avoid list-initialization. (single_view): Constraint the default ctor. (iota_view): Relax semiregular constraint to copyable. Constrain the default ctor. (iota_view::_Iterator): Constraint the default ctor. (basic_istream_view): Remove the default ctor. Remove NSDMIs. Remove redundant checks for empty _M_stream. (basic_istream_view::_Iterator): Likewise. (ref_view): Remove the default ctor. Remove NSDMIs. (ref_view::_Iterator): Constrain the default ctor. (__detail::__non_propagating_cache::operator=): Define overload for assigning from a value of the underlying type. (filter_view): Likewise. (filter_view::_Iterator): Likewise. (transform_view): Likewise. (transform_view::_Iterator): Likewise. (take_view): Likewise. (take_view::_Iterator): Likewise. (take_while_view): Likewise. (take_while_view::_Iterator): Likewise. (drop_while_view): Likewise. (drop_while_view::_Iterator): Likewise. (join_view): Likewise. (split_view::_OuterIter::__current): Adjust after changing the type of _M_current. (split_view::_M_current): Wrap it in a __non_propagating_cache. (split_view::split_view): Constrain the default ctor. (common_view): Constrain the default ctor. (reverse_view): Likewise. (elements_view): Likewise. * include/std/span (enable_view<span<_ElementType, _Extent>>): Define this partial specialization to true unconditionally. * include/std/version (__cpp_lib_ranges): Adjust value. * testsuite/24_iterators/back_insert_iterator/constexpr.cc: Don't attempt to default construct a back_insert_iterator. * testsuite/24_iterators/front_insert_iterator/constexpr.cc: Don't attempt to default construct a front_insert_iterator. * testsuite/24_iterators/insert_iterator/constexpr.cc: Don't attempt to default construct an insert_iterator. * testsuite/24_iterators/ostream_iterator/requirements/constexpr.cc: Remove this test for default constructibility of ostream_iterator. * testsuite/std/ranges/97600.cc: Don't attempt to default construct a basic_istream_view. * testsuite/std/ranges/adaptors/detail/semiregular_box.cc: Rename to ... * testsuite/std/ranges/adaptors/detail/copyable_box.cc: ... this. (test02): Adjust now that __box is copyable-box not semiregular-box. (test03): New test. * testsuite/std/ranges/p2325.cc: New test. * testsuite/std/ranges/single_view.cc (test06): New test. * testsuite/std/ranges/view.cc: Adjust now that view doesn't require default_initializable. |
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Jonathan Wakely
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c25e3bf879 |
libstdc++: Use named struct for __decay_copy
In r12-1486-gcb326a6442f09cb36b05ce556fc91e10bfeb0cf6 I changed __decay_copy to be a function object of unnamed class type. This causes problems when importing the library headers: error: conflicting global module declaration 'constexpr const std::ranges::__cust_access::<unnamed struct> std::ranges::__cust_access::__decay_copy' The fix is to use a named struct instead of an anonymous one. Signed-off-by: Jonathan Wakely <jwakely@redhat.com> libstdc++-v3/ChangeLog: * include/bits/iterator_concepts.h (__decay_copy): Name type. |
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Jonathan Wakely
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cb326a6442 |
libstdc++: Use function object for __decay_copy helper
By changing __cust_access::__decay_copy from a function template to a function object we avoid ADL. That means it's fine to call it unqualified (the compiler won't waste time doing ADL in associated namespaces, and won't try to complete associated types). This also makes some other minor simplications to other concepts for the [range.access] CPOs. Signed-off-by: Jonathan Wakely <jwakely@redhat.com> libstdc++-v3/ChangeLog: * include/bits/iterator_concepts.h (__cust_access::__decay_copy): Replace with function object. (__cust_access::__member_begin, ___cust_access::_adl_begin): Use __decay_copy unqualified. * include/bits/ranges_base.h (__member_end, __adl_end): Likewise. Use __range_iter_t for type of ranges::begin. (__member_rend): Use correct value category for rbegin argument. (__member_data): Use __decay_copy unqualified. (__begin_data): Use __range_iter_t for type of ranges::begin. |
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Jonathan Wakely
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5bfcfe3087 |
libstdc++: Add warnings for some C++23 deprecations
LWG 3036 deprecates std::pmr::polymorphic_allocator<T>::destroy in favour of the equivalent member of std::allocator_traits. LWG 3170 deprecates std::allocator<T>::is_always_equal in favour of the equivalent member of std::allocator_traits. This also updates a comment to note that we support the LWG 3541 change (even before the issue was opened). Signed-off-by: Jonathan Wakely <jwakely@redhat.com> libstdc++-v3/ChangeLog: * include/bits/allocator.h (allocator::is_always_equal): Deprecate. * include/bits/iterator_concepts.h (indirectly_readable_traits): Add LWG issue number to comment. * include/std/memory_resource (polymorphic_allocator::release): Deprecate. * testsuite/20_util/allocator/requirements/typedefs.cc: Add dg-warning for deprecation. Also check std::allocator<void>. |
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Jonathan Wakely
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ee9548b36a |
libstdc++: Fix value categories used by ranges access CPOs [PR 100824]
The implementation of P2091R0 was incomplete, so that some range access CPOs used perfect forwarding where they should not. This fixes it by consistently operating on lvalues. Some additional changes that are not necessary to fix the bug: Modify the __as_const helper to simplify its usage. Instead of deducing the value category from its argument, and requiring callers to forward the argument as the correct category, add a non-deduced template parameter which is used for the value category and accept the argument as an lvalue. This means callers say __as_const<T>(t) instead of __as_const(std::forward<T>(t)). Always use an lvalue reference type as the template argument for the _S_noexcept helpers, so that we only instantiate one specialization for lvalues and rvalues of the same type. Move some helper concepts and functions from namespace std::__detail to ranges::__cust_access, to be consistent with the ranges::begin CPO. This ensures that the __adl_begin concept and the _Begin::operator() function are in the same namespace, so unqualified lookup is consistent and the poison pills for begin are visible to both. Simplified static assertions for arrays, because the expression a+0 is already ill-formed for an array of incomplete type. Signed-off-by: Jonathan Wakely <jwakely@redhat.com> libstdc++-v3/ChangeLog: PR libstdc++/100824 * include/bits/iterator_concepts.h (__detail::__decay_copy) (__detail::__member_begin, __detail::__adl_begin): Move to namespace ranges::__cust_access. (__detail::__ranges_begin): Likewise, and rename to __begin. Remove redundant static assertion. * include/bits/ranges_base.h (_Begin, _End, _RBegin, _REnd): Use lvalue in noexcept specifier. (__as_const): Add non-deduced parameter for value category. (_CBegin, _CEnd, _CRBegin, _CREnd, _CData): Adjust uses of __as_const. (__member_size, __adl_size, __member_empty, __size0_empty): (__eq_iter_empty, __adl_data): Use lvalue objects in requirements. (__sentinel_size): Likewise. Add check for conversion to unsigned-like. (__member_data): Allow non-lvalue types to satisfy the concept, but use lvalue object in requirements. (_Size, _SSize): Remove forwarding to always use an lvalue. (_Data): Likewise. Add static assertion for arrays. * testsuite/std/ranges/access/cdata.cc: Adjust expected behaviour for rvalues. Add negative tests for ill-formed expressions. * testsuite/std/ranges/access/data.cc: Likewise. * testsuite/std/ranges/access/empty.cc: Adjust expected behaviour for rvalues. * testsuite/std/ranges/access/size.cc: Likewise. |
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Jakub Jelinek
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99dee82307 | Update copyright years. | ||
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Jonathan Wakely
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fa452a843d |
libstdc++: Remove workaround for PR c++/78173
Now that the G++ bug is fixed we no longer need to protect this partial specialization from complaining about subtracting void pointers. libstdc++-v3/ChangeLog: * include/bits/iterator_concepts.h (incrementable_traits<Tp>): Remove workaround for PR c++/78173. |
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Jonathan Wakely
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9d908b7fc4 |
libstdc++: Fix missing subsumption in std::iterator_traits [PR 97935]
libstdc++-v3/ChangeLog: PR libstdc++/97935 * include/bits/iterator_concepts.h (__detail::__iter_without_category): New helper concept. (__iterator_traits::__cat): Use __detail::__iter_without_category. * testsuite/24_iterators/associated_types/iterator.traits.cc: New test. |
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Jonathan Wakely
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160061ac10 |
libstdc++: Introduce new headers for C++20 ranges components
This introduces two new headers: <bits/ranges_base.h> defines the minimal components needed for using C++20 ranges (customization point objects such as std::ranges::begin, concepts such as std::ranges::range, etc.) <bits/ranges_util.h> includes <bits/ranges_base.h> and additionally defines subrange, which is needed by <bits/ranges_algo.h>. Most of the content of <bits/ranges_base.h> was previously defined in <bits/range_access.h>, but a few pieces were only defined in <ranges>. This meant the entire <ranges> header was needed in <algorithm> and <memory>, even though they don't use all the range adaptors. By moving the ranges components out of <bits/range_access.h> that file is left defining just the contents of [iterator.range] i.e. std::begin, std::end, std::size etc. and not C++20 ranges components. For consistency with other C++20 ranges headers, <bits/range_cmp.h> is renamed to <bits/ranges_cmp.h>. libstdc++-v3/ChangeLog: * include/Makefile.am: Add new headers and adjust for renamed header. * include/Makefile.in: Regenerate. * include/bits/iterator_concepts.h: Adjust for renamed header. * include/bits/range_access.h (ranges::*): Move to new <bits/ranges_base.h> header. * include/bits/ranges_algobase.h: Include new <bits/ranges_base.h> header instead of <ranges>. * include/bits/ranges_algo.h: Include new <bits/ranges_util.h> header. * include/bits/range_cmp.h: Moved to... * include/bits/ranges_cmp.h: ...here. * include/bits/ranges_base.h: New header. * include/bits/ranges_util.h: New header. * include/experimental/string_view: Include new <bits/ranges_base.h> header. * include/std/functional: Adjust for renamed header. * include/std/ranges (ranges::view_base, ranges::enable_view) (ranges::dangling, ranges::borrowed_iterator_t): Move to new <bits/ranges_base.h> header. (ranges::view_interface, ranges::subrange) (ranges::borrowed_subrange_t): Move to new <bits/ranges_util.h> header. * include/std/span: Include new <bits/ranges_base.h> header. * include/std/string_view: Likewise. * testsuite/24_iterators/back_insert_iterator/pr93884.cc: Add missing <ranges> header. * testsuite/24_iterators/front_insert_iterator/pr93884.cc: Likewise. |
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Jonathan Wakely
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186aa63045 |
libstdc++: Fix std::indirectly_readable ambiguity [LWG 3446]
This implements the proposed resolution of LWG 3446. I'm also adding another new constrained specialization which isn't proposed by 3446, to resolve the ambiguity when a type has both value_type and element_type but denoting different types. libstdc++-v3/ChangeLog: * include/bits/iterator_concepts.h (indirectly_readable): Add partial specializations to resolve ambiguities (LWG 3446). * testsuite/24_iterators/associated_types/readable.traits.cc: Check types with both value_type and element_type. |
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Jonathan Wakely
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5e9ad288eb |
libstdc++: Make incrementable<__int128> satisfied in strict mode
This adds specializations of std::incrementable_traits so that 128-bit integers are always considered incrementable (and therefore usable with std::ranges::iota_view) even when they don't satisfy std::integral. libstdc++-v3/ChangeLog: * include/bits/iterator_concepts.h [__STRICT_ANSI__] (incrementable_traits<__int128>): Define specialization. (incrementable_traits<unsigned __int128>): Likewise. * testsuite/std/ranges/iota/96042.cc: Test iota_view with __int128. |
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Patrick Palka
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e6c76f0d33 |
libstdc++: integer-class types as per [iterator.concept.winc]
This implements signed and unsigned integer-class types, whose width is one bit larger than the widest supported signed and unsigned integral type respectively. In our case this is either __int128 and unsigned __int128, or long long and unsigned long long. Internally, the two integer-class types are represented as a largest supported unsigned integral type plus one extra bit. The signed integer-class type is represented in two's complement form with the extra bit acting as the sign bit. libstdc++-v3/ChangeLog: * include/Makefile.am (bits_headers): Add new header <bits/max_size_type.h>. * include/Makefile.in: Regenerate. * include/bits/iterator_concepts.h (ranges::__detail::__max_diff_type): Remove definition, replace with forward declaration of class __max_diff_type. (__detail::__max_size_type): Remove definition, replace with forward declaration of class __max_size_type. (__detail::__is_unsigned_int128, __is_signed_int128) (__is_int128): New concepts. (__detail::__is_integer_like): Accept __int128 and unsigned __int128. (__detail::__is_signed_integer_like): Accept __int128. * include/bits/max_size_type.h: New header. * include/bits/range_access.h: Include <bits/max_size_type.h>. (__detail::__to_unsigned_like): Two new overloads. * testsuite/std/ranges/iota/difference_type.cc: New test. * testsuite/std/ranges/iota/max_size_type.cc: New test. |
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Jonathan Wakely
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9e67b4356e |
libstdc++: cv bool can't be an integer-like type (LWG 3467)
libstdc++-v3/ChangeLog: * include/bits/iterator_concepts.h (__detail::__cv_bool): New helper concept. (__detail::__integral_nonbool): Likewise. (__detail::__is_integer_like): Use __integral_nonbool. * testsuite/std/ranges/access/lwg3467.cc: New test. |
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Jonathan Wakely
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f2242ec0d3 |
libstdc++: Remove workarounds for constrained nested class templates
With PR c++/92078 and PR c++/92103 both fixed, nested class templates can now be constrained. That means a number of namespace-scope helpers can be moved to the class scope, so they're only visible where they're needed. * include/bits/iterator_concepts.h (__detail::__ptr, __detail::__ref) (__detail::__cat, __detail::__diff): Move to class scope in the relevant __iterator_traits specializations. (__iterator_traits<>): Use nested class templates instead of ones from namespace __detail. * include/bits/stl_iterator.h (__detail::__common_iter_ptr): Move to class scope in iterator_traits<common_iterator<I, S>>. (iterator_traits<common_iterator<I, S>>): Use nested class template instead of __detail::__common_iter_ptr. |
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Jonathan Wakely
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f094665d46 |
libstdc++: Avoid constraint recursion with iterator_traits (PR 93983)
Checking whether a filesystem::path constructor argument is an iterator requires instantiating std::iterator_traits. In C++20 that checks for satisfaction of std::iterator_traits constraints, which checks if the type is copyable, which can end up recursing back to the path constructor. The fix in LWG 3420 is to reorder the cpp17-iterator concept's constraints to check if the type looks vaguely like an iterator before checking copyable. That avoids the recursion for types which definitely aren't iterators, but isn't foolproof. PR libstdc++/93983 * include/bits/iterator_concepts.h (__detail::__cpp17_iterator): Reorder constraints to avoid recursion when constructors use iterator_traits (LWG 3420). * testsuite/24_iterators/customization_points/lwg3420.cc: New test. |
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Jonathan Wakely
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a5f2fb1ff1 |
libstdc++: Replace deduced return type in ranges::iter_move (PR 92894)
The deduced return type causes the instantiation of the function body, which can then require the instantiation of std::projected::operator* which is intentionally not defined. This patch uses a helper trait to define the return type, so that the function body doesn't need to be instantiated. That helper trait can then also be used in other places that currently check the return type of ranges::iter_move (iter_rvalue_reference_t and indirectly_readable). 2020-05-01 Jonathan Wakely <jwakely@redhat.com> Patrick Palka <ppalka@redhat.com> PR libstdc++/92894 * include/bits/iterator_concepts.h (ranges::__cust_imove::_IMove): Add trait to determine return type and an alias for it. (ranges::__cust_imove::_IMove::operator()): Use __result instead of deduced return type. (iter_rvalue_reference_t): Use _IMove::__type instead of checking the result of ranges::iter_move. (__detail::__indirectly_readable_impl): Use iter_rvalue_reference_t instead of checking the result of ranges::iter_move. * testsuite/24_iterators/customization_points/92894.cc: New test. * testsuite/24_iterators/indirect_callable/92894.cc: New test. |
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Jonathan Wakely
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ae6076b5bc |
libstdc++: Implement C++20 changes to insert iterators
std::insert_iterator and std::inserter need to be adjusted for C++20, so that they use ranges::iterator_t. That alias template requires ranges::begin to be defined. Rather than moving the whole of ranges::begin (and related details like ranges::enable_borrowed_range) into <iterator>, this defines a new, simpler version of ranges::begin that is sufficient for ranges::iterator_t to be defined. This works because ranges::iterator_t uses an lvalue reference type, so the logic in ranges::begin for non-lvalue ranges (i.e. borrowed ranges) isn't needed. This also adds the missing constexpr specifiers to the other insert iterators. * include/bits/iterator_concepts.h (__detail::__decay_copy) (__detail::__member_begin, __detail::__adl_begin): Move here from <bits/range_access.h>. (__detail::__ranges_begin, __detail::__range_iter_t): Define. * bits/range_access.h (__cust_access::__decay_copy) (__cust_access::__member_begin, __cust_access::__adl_begin): Move to <bits/iterator_concepts.h>. (ranges::iterator_t): Use __detail::__range_iter_t. * include/bits/stl_iterator.h (back_insert_iterator): Simplify conditional compilation. Add _GLIBCXX20_CONSTEXPR to all members. (front_insert_iterator): Likewise. (insert_iterator): Implement changes from P0896R4 for C++20. * testsuite/24_iterators/back_insert_iterator/constexpr.cc: New test. * testsuite/24_iterators/front_insert_iterator/constexpr.cc: New test. * testsuite/24_iterators/headers/iterator/synopsis_c++17.cc: Adjust for inclusion in synopsis_c++20.cc which expects different signatures for some function templates. * testsuite/24_iterators/insert_iterator/constexpr.cc: New test. |
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Jonathan Wakely
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59aa9e577e |
libstdc++: ranges::iter_move should perform ADL-only lookup (LWG 3247)
* include/bits/iterator_concepts.h (iter_move): Add declaration to prevent unqualified lookup finding a suitable declaration (LWG 3247). |
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Jonathan Wakely
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d6dfa3dafc |
libstdc++: Make "implicit expression variants" more explicit (P2102R0)
* include/bits/iterator_concepts.h (indirectly_copyable_storable): Add const-qualified expression variations. * include/std/concepts (copyable): Likewise. |
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Jonathan Wakely
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c8dd2446f5 |
libstdc++: Implement P1878R1 "Constraining Readable Types"
* include/bits/iterator_concepts.h (iter_difference_t, iter_value_t): Use remove_cvref_t. (readable_traits): Rename to indirectly_readable_traits. (readable): Rename to indirectly_readable. (writable): Rename to indirectly_writable. (__detail::__iter_exchange_move): Do not use remove_reference_t. (indirectly_swappable): Adjust requires expression parameter types. expression. * include/bits/ranges_algo.h (ranges::transform, ranges::replace) (ranges::replace_if, ranges::generate_n, ranges::generate) (ranges::remove): Use new name for writable. * include/bits/stl_iterator.h (__detail::__common_iter_has_arrow): Use new name for readable. * include/ext/pointer.h (readable_traits<_Pointer_adapter<P>>): Use new name for readable_traits. * testsuite/24_iterators/associated_types/readable.traits.cc: Likewise. * testsuite/24_iterators/indirect_callable/projected.cc: Adjust for new definition of indirectly_readable. |
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Jonathan Wakely
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269e8130b7 |
libstdc++: Remove workarounds for constraints on alias templates
The G++ bug has been fixed for a couple of months so we can remove these workarounds that define alias templates in terms of constrained class templates. We can just apply constraints directly to alias templates as specified in the C++20 working draft. * include/bits/iterator_concepts.h (iter_reference_t) (iter_rvalue_reference_t, iter_common_reference_t, indirect_result_t): Remove workarounds for PR c++/67704. * testsuite/24_iterators/aliases.cc: New test. |
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Jonathan Wakely
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2a0f6c61b4 |
libstdc++: Fix weakly_incrementable to allow __int128 (PR 93267)
The __iota_diff_t alias can be the type __int128, but that does not satisfy the signed_integral and __is_signed_integer_like concepts when __STRICT_ANSI__ is defined (which is true for -std=c++2a). Because weakly_incrementable is defined in terms of signed_integral, it is not satisfied by __int128, which means iota_view's iterator doesn't always satisfy input_or_output_iterator and so iota_view is not always a range. The solution is to define __max_size_type and __max_diff_type using __int128, so that __is_signed_integer_like allows __int128, and then make weakly_incrementable use __is_signed_integer_like instead of signed_integral. PR libstdc++/93267 * include/bits/iterator_concepts.h (__max_diff_type, __max_size_type): Move here from <bits/range_access.h> and define using __int128 when available. (__is_integer_like, __is_signed_integer_like): Move here from <bits/range_access.h>. (weakly_incrementable): Use __is_signed_integer_like. * include/bits/range_access.h (__max_diff_type, __max_size_type) (__is_integer_like, __is_signed_integer_like): Move to <bits/iterator_concepts.h>. (__make_unsigned_like_t): Move here from <ranges>. * include/std/ranges (__make_unsigned_like_t): Move to <bits/range_access.h>. (iota_view): Replace using-directive with using-declarations. * testsuite/std/ranges/iota/93267.cc: New test. * testsuite/std/ranges/iota_view.cc: Move to new 'iota' sub-directory. |