C++ Standard Library Issues List (Revision D125)

Index by Status and Section

Reference ISO/IEC IS 14882:2020(E)

This document is the Index by Status and Section for the Library Active Issues List, Library Defect Reports and Accepted Issues, and Library Closed Issues List.

Revised 2024-07-23 at 10:01:58 UTC

Ready (8 issues)

Issue Status Section Title Proposed Resolution Priority Duplicates
4064(i) Ready 23.5.3 [cstring.syn] Clarify that std::launder is not needed when using the result of std::memcpy Yes 3
4027(i) Ready 26.2 [ranges.syn] possibly-const-range should prefer returning const R& Yes 2
4112(i) Ready 26.5.2 [range.utility.helpers] has-arrow should required operator->() to be const-qualified Yes
3899(i) Ready 26.8.5 [coro.generator.promise] co_yielding elements of an lvalue generator is unnecessarily inefficient Yes 3
3900(i) Ready 26.8.5 [coro.generator.promise] The allocator_arg_t overloads of generator::promise_type::operator new should not be constrained Yes 3
3918(i) Ready 27.11.6 [uninitialized.move] std::uninitialized_move/_n and guaranteed copy elision Yes 3
3436(i) Ready 27.11.8 [specialized.construct] std::construct_at should support arrays Yes 2
4044(i) Ready 31.7.10 [print.fun] Confusing requirements for std::print on POSIX platforms Yes 3

Tentatively NAD (9 issues)

Issue Status Section Title Proposed Resolution Priority Duplicates
3982(i) Tentatively NAD 26.4.4 [range.view] is-derived-from-view-interface should require that T is derived from view_interface<T> Yes
4003(i) Tentatively NAD 26.5.3 [view.interface] view_interface::back is overconstrained Yes
3958(i) Tentatively NAD [range.utility.conv.to] ranges::to should prioritize the "reserve" branch Yes
3981(i) Tentatively NAD 26.7.2 [range.adaptor.object] Range adaptor closure object is underspecified for its return type Yes
3908(i) Tentatively NAD [range.enumerate.iterator] enumerate_view::iterator constructor is explicit Yes
4006(i) Tentatively NAD [range.chunk.outer.value] chunk_view::outer-iterator::value_type should provide empty Yes
4095(i) Tentatively NAD 27.4 [algorithm.syn] ranges::fold_meow should explicitly spell out the return type Yes
3980(i) Tentatively NAD 33.5.4 [atomics.order] The read exclusive ownership of an atomic read-modify-write operation and whether its read and write are two operations are unclear Yes
3909(i) Tentatively NAD 99 [ranges.refinements] Issues about viewable_range Yes

New (419 issues)

Issue Status Section Title Proposed Resolution Priority Duplicates
3513(i) New 3.42 [defns.prog.def.type] Fix definition of program-defined based on its uses Yes 3
4005(i) New 3.47 [defns.required.behavior] "Required behavior" too narrowly defined No 2
3669(i) New 4.1.2 [intro.abstract] std::filesystem operations should be observable behaviour No 3
3105(i) New 16 [library] T1 is convertible to T2 No 3
2949(i) New 16 [library] Unclear complexity requirements: space vs. time No 4
3538(i) New 16.2 [library.c] §[library.c] C library functions are not addressable No 2
3556(i) New [structure.requirements] Specification of when semantic constraints are imposed by use of concepts is unclear No 3
3193(i) New [structure.specifications] Mandates: and Expects: elements are not defined for types Yes 3
3401(i) New [structure.specifications] Is "as if by" equivalent to "equivalent to"? No 3
3977(i) New [bitmask.types] constexpr and noexcept for operators for bitmask types Yes 3
3620(i) New [character.seq.general] What are execution character sets and execution wide-character sets (after P2314R4)? No 3
4049(i) New 16.4.2 [organization] C <foo.h> headers not in freestanding Yes
3690(i) New [contents] std::make_from_tuple etc. should find all tuple-like std::get overloads Yes 3
3240(i) New [using.headers] Headers declare more than entities No 3
3640(i) New 16.4.4 [utility.requirements] Clarify which exceptions are propagated Yes 3
3044(i) New [allocator.requirements] Strange specification of max_size() for an allocator Yes 3
3267(i) New [allocator.requirements] Rebound allocators and is_always_equal Yes 4
3157(i) New [allocator.requirements] Allocator destroy and fancy pointer operations must be non-throwing Yes 3
2461(i) New [allocator.requirements] Interaction between allocators and container exception safety guarantees No 3
4065(i) New [allocator.requirements.general] Requirements for fancy pointers might be insufficient for self-referential implementation of containers Yes 3
3682(i) New [allocator.requirements.general] A Cpp17Allocator type can't silently ignore an unsupported alignment No 3
4047(i) New [namespace.std] Explicitly specifying template arguments for std::swap should not be supported No 4
3926(i) New [namespace.std] Which namespace std is the mentioned one? Yes 4
3928(i) New [namespace.posix] Non-top-level namespace posix shouldn't be reserved Yes 3
3550(i) New [reserved.names] Names reserved by C for standard library not reserved by C++ No 3
4033(i) New [macro.names] §[macro.names] defining macros after importing the standard library Yes
3920(i) New [extern.names] Bad footnotes claiming external linkage for entities defined as macros No 3
3142(i) New [res.on.functions] std::foo<incomplete> should be ill-formed NDR Yes 3
3511(i) New [res.on.arguments] Clarify global permission to move Yes 3
4068(i) New [res.on.requirements] Terminology for objects whose types model a concept No
3429(i) New [res.on.requirements] "models" should subsume like "satisfies" Yes 3
4100(i) New [global.functions] Default arguments and signatures of standard library non-member functions Yes
2695(i) New [member.functions] "As if" unclear in [member.functions] No 3
3854(i) New [res.on.exception.handling] §[res.on.exception.handling]/3 should not be applied to all standard library types No 3
3229(i) New [res.on.exception.handling] §[res.on.exception.handling]#3 cannot apply to types with implicitly declared destructors Yes 3
3217(i) New 17.3.1 [support.limits.general] <memory> and <execution> should define __cpp_lib_parallel_algorithm Yes 3
3931(i) New 17.3.2 [version.syn] Too many paper bump __cpp_lib_ranges Yes 3
2248(i) New 17.3.5 [numeric.limits] numeric_limits::is_iec559 misnamed No 4
3922(i) New [numeric.limits.general] It's unclear whether numeric_limits can be specialized by users Yes 3
3923(i) New [numeric.limits.general] The specification of numeric_limits doesn't clearly distinguish between implementation requirements and user requirements Yes 3
3370(i) New 17.4.1 [cstdint.syn] §[cstdint.syn]p2 and §[headers]p5 are not sufficiently clear No 3
2815(i) New 17.5 [support.start.term] quick_exit can deadlock Yes 3
3084(i) New 17.5 [support.start.term] Termination in C++ is unclear No 3
3086(i) New [new.delete.single] Possible problem in §[new.delete.single] Yes 3
2737(i) New [new.delete.single] Consider relaxing object size restrictions for single-object allocation functions No 3
2303(i) New [new.delete.placement] Explicit instantiation of std::vector<UserType> broken? No 3
2508(i) New [new.delete.dataraces] §[new.delete.dataraces] wording needs to be updated No 3
3624(i) New 17.7 [support.rtti] Inconsistency of <typeinfo>, <initializer_list>, and <compare> in the standard library Yes 3
2453(i) New 17.10 [support.initlist] §[iterator.range] and now [iterator.container] aren't available via <initializer_list> No 3
2493(i) New 17.10 [support.initlist] initializer_list supports incomplete classes No 4
4051(i) New 17.11.2 [cmp.categories] A less hacky and more useful way to compare comparison category types Yes
3584(i) New 17.11.3 [cmp.common] Clarify common comparison category conversions Yes 3
3587(i) New 17.11.4 [cmp.concept] std::three_way_comparable_with<T, U, void> can be satisfied but can't be modeled No 3
3932(i) New 17.11.6 [cmp.alg] Expression-equivalence is sometimes unimplementable when passing prvalue expressions to comparison CPOs No 3
3491(i) New 17.11.6 [cmp.alg] What is a "decayed type"? No 3
3653(i) New 17.12.2 [coroutine.syn] <coroutine> is freestanding, but uses std::hash which is not No 3
3945(i) New 17.13.2 [cstdarg.syn] §[cstdarg.syn] 'Compatible types' are undefined No 3
3954(i) New 17.14.1 [support.c.headers.general] Feature-test macros in C headers (<stddef.h> etc.) No 3
3883(i) New 17.14.7 [support.c.headers.other] §[support.c.headers.other] Ambiguity in the requirements for includes Yes 4
3799(i) New 17.14.7 [support.c.headers.other] Should <math.h> provide 3-argument ::hypot overloads? No 3
3484(i) New 17.14.7 [support.c.headers.other] Should <stddef.h> declare ::nullptr_t? Yes 3
3895(i) New 18.3 [concepts.syn] Various relation concepts are missing default values of the second template parameters Yes 3
3608(i) New 18.4.4 [concept.convertible] convertible_to and temporary-bound references No 3
3459(i) New 18.4.4 [concept.convertible] Why doesn't std::convertible_to have semantic requirement when To is reference-to-function type? No 3
4041(i) New 18.4.9 [concept.swappable] The requirements on literal type in [concept.swappable] should be removed Yes 4
3019(i) New [syserr.errcat.derived] Presentation of "program defined classes derived from error_category" [syserr.errcat.derived] unclear and contains mistakes No 3
3053(i) New [syserr.errcode.overview] Prohibit error_code construction from rvalues of error_category Yes 3
3162(i) New [syserr.syserr.members] system_error::system_error(error_code ec) not explicit Yes 3
3625(i) New 19.6.2 [stacktrace.syn] Should <stacktrace> provide range access function templates? Yes 3
3626(i) New [stacktrace.basic.overview] Is std::basic_stacktrace required to use contiguous storage? Yes 3
4058(i) New 20.2.4 [pointer.conversion] std::to_address() should be SFINAE-friendly Yes
2421(i) New 20.2.5 [ptr.align] Non-specification of handling zero size in std::align [ptr.align] No 3
3192(i) New [allocator.uses.construction] §[allocator.uses.construction] functions misbehave for const types Yes 3
3665(i) New [allocator.traits.types] Is std::allocator_traits<Alloc>::rebind_alloc SFINAE-friendly? No 3
3916(i) New 20.2.10 [default.allocator] allocator, polymorphic_allocator, and containers should forbid cv-qualified types No 3
3917(i) New 20.2.10 [default.allocator] Validity of allocator<void> and possibly polymorphic_allocator<void> should be clarified Yes 3
3684(i) New [allocator.members] std::allocator<T>::allocate_at_least in constant evaluation Yes 3
3159(i) New [unique.ptr.single] §[unique.ptr.single] requirements on deleter may be too strict No 3
3911(i) New [unique.ptr.single.observers] unique_ptr's operator* is missing a mandate Yes 3
2594(i) New [util.smartptr.shared] Contradicting definition of empty shared_ptr on shared_ptr(nullptr, d) Yes 3
4110(i) New [util.smartptr.shared.const] shared_ptr(nullptr_t, Deleter) is overconstrained, breaking some sensible deleters Yes
4032(i) New [util.smartptr.shared.const] Possibly invalid types in the constraints of constructors of std::shared_ptr Yes 4
2906(i) New [util.smartptr.shared.const] There is no ability to supply an allocator for the control block when constructing a shared_ptr from a unique_ptr No 3
2751(i) New [util.smartptr.shared.dest] shared_ptr deleter not specified to observe expired weak_ptr instances No 4
3210(i) New [util.smartptr.shared.create] allocate_shared is inconsistent about removing const from the pointer passed to allocator construct and destroy Yes 3
4024(i) New [util.smartptr.shared.create] Underspecified destruction of objects created in std::make_shared_for_overwrite/std::allocate_shared_for_overwrite Yes 2
3216(i) New [util.smartptr.shared.create] Rebinding the allocator before calling construct/destroy in allocate_shared Yes 3
3681(i) New 20.4.1 [mem.res.syn] Further considerations on LWG 3679 No 4
3637(i) New 20.4.2 [mem.res.class] pmr::memory_resource::do_allocate needs clarification No 3
3634(i) New 20.4.4 [mem.res.global] When are static-duration memory_resource objects destroyed? No 3
2848(i) New [mem.res.pool.options] Pass-through threshold for pool allocator No 3
2845(i) New 21.3.2 [meta.rqmts] enable_if, result_of, common_type and aligned_storage do not meet the definition of TransformationTrait No 3
2939(i) New 21.3.3 [meta.type.synop] Some type-completeness constraints of traits are overspecified Yes 2
3099(i) New 21.3.3 [meta.type.synop] is_assignable<Incomplete&, Incomplete&> Yes 2
4113(i) New [meta.unary.prop] Disallow has_unique_object_representations<Incomplete[]> Yes
3967(i) New [meta.unary.prop] The specification for std::is_nothrow_* traits may be ambiguous in some cases involving noexcept(false) No
3929(i) New [meta.unary.prop] Preconditions for type traits should be Mandates Yes 3
2827(i) New [meta.unary.prop] is_trivially_constructible and non-trivial destructors No 3
3697(i) New [meta.unary.prop] Preconditions of reference_constructs_from_temporary/reference_converts_from_temporary seem wrong Yes 3
2496(i) New [meta.unary.prop] Certain hard-to-avoid errors not in the immediate context are not allowed to be triggered by the evaluation of type traits No 3
3400(i) New 21.3.7 [meta.rel] Does is_nothrow_convertible consider destruction of the destination type? No 3
4028(i) New 21.3.7 [meta.rel] std::is_(nothrow_)convertible should be reworded to avoid dependence on the return statement Yes
3174(i) New 21.3.7 [meta.rel] Precondition on is_convertible is too strong Yes 3
3205(i) New [meta.trans.other] decay_t in the new common_type fallback should be remove_cvref_t Yes 3
3902(i) New 22.2.6 [declval] Return type of std::declval<cv void> should be (cv-unqualified) void Yes 4
2599(i) New 22.2.6 [declval] Library incomplete type permission phrase is unclear No 3
3342(i) New 22.3.2 [pairs.pair] Library wording uses "initializes x with y", which is underspecified No 3
2766(i) New 22.3.3 [pairs.spec] Swapping non-swappable types Yes 3
3166(i) New 22.3.4 [pair.astuple] No such descriptive element as Value: No 3
3378(i) New 22.4.2 [tuple.syn] tuple_size_v/tuple_element_t should be available when tuple_size/tuple_element are Yes 3
3583(i) New [tuple.cnstr] Clarify if/when short circuiting applies to conditions in Constraints: elements No 3
2528(i) New [tuple.cnstr] Order of std::tuple construction unspecified No 3
3978(i) New 22.4.5 [tuple.creation] The "no effect" requirement for std::ignore is unimplementable for volatile bit-fields No 4
2933(i) New 22.4.5 [tuple.creation] PR for LWG 2773 could be clearer Yes 3
4040(i) New 22.4.7 [tuple.helper] Contradictory specification of std::tuple_size No 3
3882(i) New 22.4.9 [tuple.rel] tuple relational operators have confused friendships Yes 3
3728(i) New 22.4.9 [tuple.rel] Can't make neither head nor tail of the description of operator<=>(tuple, tuple) Yes 4
2472(i) New 22.4.9 [tuple.rel] Heterogeneous comparisons in the standard library can result in ambiguities No 3
3886(i) New [optional.optional.general] Monad mo' problems Yes 3
2811(i) New [optional.ctor] "Selected constructor" wording is incorrect for optional/variant/any Yes 3
2746(i) New [optional.assign] Inconsistency between requirements for emplace between optional and variant Yes 3
3424(i) New [optional.observe] optional::value_or should never return a cv-qualified type Yes 3
3613(i) New 22.5.4 [optional.nullopt] Specify that nullopt_t is copyable Yes 3
4072(i) New 22.5.8 [optional.comp.with.t] std::optional comparisons: constrain harder Yes 1
3627(i) New 22.5.9 [optional.specalg] Inconsistent specifications for std::make_optional overloads Yes 3
2881(i) New 22.6.3 [variant.variant] Adopt section III of P0308R0 No 3
3215(i) New [variant.ctor] variant default constructor has vague constexpr requirements No 2
3991(i) New [variant.assign] variant's move assignment should not be guaranteed to produce a valueless by exception state Yes 3
3069(i) New [variant.assign] Move assigning variant's subobject corrupts data Yes 3
3416(i) New 22.7.4 [any.class] The Throws: specification of std::any does not mention allocation No 3
3423(i) New 22.7.5 [any.nonmembers] std::any_cast should never return a cv-qualified type Yes 3
3688(i) New 22.8.4 [expected.bad] Exception specifications of copy/move member functions of std::bad_expected_access No 2
3891(i) New [expected.object.general] LWG 3870 breaks std::expected<cv T, E> Yes 2
4026(i) New [expected.object.assign] Assignment operators of std::expected should propagate triviality Yes 2
3805(i) New 22.10 [function.objects] Expression evaluating to a call wrapper is a prvalue, not an object No 4
4007(i) New 22.10.4 [func.require] Mystic prohibition of calling a volatile-qualified perfect forwarding call wrapper Yes 3
3046(i) New 22.10.6 [refwrap] Do not require reference_wrapper to support non-referenceable function types Yes 3
2491(i) New 22.10.8 [comparisons] std::less<T*> in constant expression Yes 3
2547(i) New 22.10.8 [comparisons] Container requirements (and other library text) should say "strict total order", not just "total order" No 3
3979(i) New 22.10.13 [func.not.fn] Should we reject std::bind_front<42>() and its friends? Yes 4
3493(i) New [func.wrap.func.con] The constructor of std::function taking an F is missing a constraint Yes 3
3680(i) New [func.wrap.move.ctor] Constructor of move_only_function with empty ref-qualifier is over-constrained Yes 2
3642(i) New [func.wrap.move.ctor] move_only_function assignment operators seem to be defined suboptimal Yes 3
3512(i) New 22.10.19 [unord.hash] Incorrect exception safety guarantee for unordered containers No 3
3456(i) New 22.13.3 [charconv.from.chars] Pattern used by std::from_chars is underspecified Yes 3
3651(i) New 22.14 [format] Unspecified lifetime guarantees for the format string No 3
3997(i) New 22.14.1 [format.syn] std::formatter specializations should be consistently restricted to supported character types No 4
3641(i) New 22.14.1 [format.syn] Add operator== to format_to_n_result Yes 3
3939(i) New [format.string.std] §[format.string.std] char is not formatted as a character when charT is wchar_t No 3
3644(i) New [format.string.std] std::format does not define "integer presentation type" Yes 2
3586(i) New [format.string.std] Formatting character alignment inconsistencies Yes 2
4078(i) New 22.14.5 [format.functions] What if arguments alias the output buffer in std::format_to? No
3993(i) New [formatter.requirements] The parse function of a BasicFormatter type needs to be constexpr Yes 3
3943(i) New [format.formattable] Clarify lifetime requirements of BasicFormatter and Formatter Yes 3
3706(i) New [format.formatter.spec] How does std::format work with character arrays of unknown bound? No 3
4107(i) New [format.range.fmtmap] Map formatter may conflict with user-defined specializations of pair/tuple formatters Yes
3968(i) New 22.15.8 [bit.endian] std::endian::native value should be more specific about object representations Yes 4
2513(i) New 23.1 [strings.general] Missing requirements for basic_string::value_type No 4
3694(i) New 23.2.2 [char.traits.require] Should traits_type::length be customizable? No 4
3942(i) New 23.2.4 [char.traits.specializations] Inconsistent use of const char_type& in standard specializations of std::char_traits Yes 3
4063(i) New [char.traits.specializations.char] Freestanding std::char_traits<char>::eof depends on non-freestanding EOF No 2
2959(i) New [char.traits.specializations.char16.t] char_traits<char16_t>::eof is a valid UTF-16 code unit No 3
3989(i) New 23.3 [string.view] The whole range for an iterator obtained from a std::span or std::basic_string_view is not clear No 3
3457(i) New 23.3.3 [string.view.template] *this is not invalidated Yes 3
4102(i) New [string.view.cons] string_view(Iter, Iter) constructor breaks existing code No
3339(i) New 23.4.3 [basic.string] Move-constructed empty-container capacity No 3
3451(i) New 23.4.3 [basic.string] Inconsistently explicit deduction guides Yes 3
4029(i) New [basic.string.general] basic_string accidentally fails to meet the reversible container requirements Yes 3
3663(i) New [string.cons] basic_string(const T&, const Alloc&) turns moves into copies Yes 3
3662(i) New [string.append] basic_string::append/assign(NTBS, pos, n) suboptimal Yes 3
3837(i) New [string.erasure] std::erase_if overloads for non-associative containers should move (and not copy) their predicate object Yes 3
2237(i) New 23.5 [c.strings] <cuchar> macros No 4
3059(i) New 24.2 [container.requirements] Wrong requirements for map-like associative container assignment? No 3
2269(i) New 24.2.2 [container.requirements.general] Container iterators and argument-dependent lookup No 4
3976(i) New [container.alloc.reqmts] What does it mean for a type to be "allocator aware"? No
3297(i) New 24.2.4 [sequence.reqmts] Useless sequence container requirement Yes 3
2705(i) New 24.2.4 [sequence.reqmts] Questionable precondition on Sequence containers a.assign(n, t) Yes 3
3438(i) New [container.node.overview] §[container.node.overview] missing multiset/map cases No 3
3227(i) New 24.2.7 [associative.reqmts] Ambiguity issue for extract in ordered and unordered associative containers Yes 3
2362(i) New 24.2.7 [associative.reqmts] unique, associative emplace() should not move/copy the mapped_type constructor arguments when no insertion happens No 3
3577(i) New [associative.reqmts.general] Merging an (unordered) associative container with itself No 3
3691(i) New [associative.reqmts.general] Replacement of keys in associative containers Yes 3
3578(i) New [associative.reqmts.general] Iterator SCARYness in the context of associative container merging No 3
4046(i) New [associative.reqmts.except] Effects of inserting into or erasing from flat container adaptors when an exception is thrown need to be more permissive No 2
3219(i) New [array.overview] std::array overview container requirements are incorrect Yes 3
3308(i) New [deque.modifiers] vector and deque iterator erase invalidates elements even when no change occurs Yes 3
3758(i) New [vector.capacity] Element-relocating operations of std::vector and std::deque should conditionally require Cpp17CopyInsertable in their preconditions No 3
3638(i) New 24.3.13 [vector.bool] vector<bool>::swap(reference, reference) is useless Yes 3
4122(i) New [inplace.vector.overview] Ill-formed operator<=> can cause hard error when instantiating std::inplace_vector Yes
3531(i) New [map.overview] LWG 3025 broke previous valid code Yes 3
2713(i) New 24.5 [unord] More missing allocator-extended constructors for unordered containers Yes 3
3189(i) New 24.6.7 [priority.queue] Missing requirement for std::priority_queue No 3
3959(i) New 24.6.9 [flat.map] Should the comparator of std::flat_map/std::flat_multimap be copied twice in some operations? No
3802(i) New 24.6.9 [flat.map] flat_foo allocator-extended constructors lack move semantics No 2
3804(i) New 24.6.9 [flat.map] flat_foo missing some allocator-extended deduction guides No 2
3966(i) New [flat.map.overview] The value_type and reference members of std::flat_(multi)map::(const_)iterator are unclear No 3
3963(i) New [flat.map.defn] Different std::flat_map/std::flat_multimap specializations should be able to share same nested classes Yes 3
4000(i) New [flat.map.modifiers] flat_map::insert_range's Effects is not quite right Yes 3
4048(i) New 24.6.11 [flat.set] Inconsistent preconditions for transparent insertion of std::flat_map/std::flat_set Yes 2
3813(i) New [span.overview] std::span<volatile T, E> is made ill-formed by P2278R4 when T is a normal class type No 2
3995(i) New 24.7.3 [views.multidim] Issue with custom index conversion in <mdspan> No 3
4020(i) New [mdspan.extents.expo] extents::index-cast weirdness Yes
4021(i) New [mdspan.mdspan.overview] mdspan::is_always_meow() should be noexcept Yes
3952(i) New 25.2 [iterator.synopsis] iter_common_reference_t does not conform to the definition of indirectly_readable Yes 3
4080(i) New 25.3.2 [iterator.assoc.types] Presumed value and difference types of an iterator type in ranges and non-ranges algorithms No 3
3838(i) New [incrementable.traits] The last specialization of incrementable_traits is under-constrained Yes 3
3615(i) New [incrementable.traits] The last specialization of incrementable_traits has wrong operand types Yes 3
3287(i) New [iterator.traits] Exposition-only cpp17-input-iterator concept is needlessly complex Yes 3
3890(i) New [iterator.concept.winc] ABI issue for integer-class types Yes 3
3716(i) New [iterator.concept.forward] §[iterator.concept.forward][forward.iterators] Two different definitions of multi-pass guarantee No 3
3197(i) New 25.4.3 [iterator.operations] std::prev should not require BidirectionalIterator Yes 3
4055(i) New 25.4.3 [iterator.operations] §[iterator.operations] std::distance is missing a precondition Yes 4
3439(i) New 25.4.3 [iterator.operations] "Distance" template parameter is underspecified No 3
3344(i) New 25.4.3 [iterator.operations] advance(i, most-negative) and prev(i, most-negative) Yes 3
2858(i) New 25.5.1 [reverse.iterators] LWG 2472: actually an incompatibility with C++03 Yes 4
3623(i) New [reverse.iterators.general] Uses of std::reverse_iterator with containers should not require manually including <iterator> Yes 3
2595(i) New [reverse.iterator] reverse_iterator::operator[]'s return type revisited Yes 3
3602(i) New [reverse.iter.cons] reverse_iterator's converting assignment is overconstrained Yes 3
3725(i) New [reverse.iter.elem] reverse_iterator::operator-> should not use prev for non-pointer iterators Yes 3
4104(i) New 25.5.3 [const.iterators] basic_const_iterator<volatile int*> is not a contiguous_iterator No 4
3986(i) New 25.5.3 [const.iterators] basic_const_iterator doesn't work with optional No 3
3863(i) New [const.iterators.alias] Is input_iterator guaranteed to have iter_const_reference_t? No 2
4120(i) New [move.iterator] move_iterator should provide iterator_category only when it models forward_iterator Yes
4115(i) New [move.iter.elem] move_iterator::operator* should have conditional noexcept specification Yes
4092(i) New [common.iterator] The monotonic version of common_iterator::operator== is underconstrained Yes 3
3783(i) New [common.iterator] views::common may not be a range adaptor object Yes 3
3748(i) New [common.iter.cmp] common_iterator and counted_iterator' operator- are missing cast to return type Yes 3
2366(i) New 25.6.4 [istreambuf.iterator] istreambuf_iterator end-of-stream equality Yes 3
3107(i) New 25.6.4 [istreambuf.iterator] istreambuf_iterator has public exposition-only member Yes 4
3188(i) New 25.6.4 [istreambuf.iterator] istreambuf_iterator::pointer should not be unspecified Yes 3
3108(i) New [istreambuf.iterator.proxy] istreambuf_iterator::proxy::operator* should be const Yes 3
3537(i) New 25.7 [iterator.range] §[iterator.range] Missing noexcept for std::rbegin/rend for arrays and initializer_list No 3
3729(i) New 26.2 [ranges.syn] std::tuple_element_t<std::ranges::subrange<I, S, K>> should remove top-level cv-qualifiers Yes 4
4062(i) New 26.3.12 [range.prim.empty] ranges::empty has no semantic requirements for forward_ranges No
3896(i) New 26.4.5 [range.refinements] The definition of viewable_range is not quite right Yes 4
4010(i) New [range.subrange.access] subrange::advance should be improved Yes 3
4121(i) New [range.utility.conv.general] ranges::to constructs associative containers via c.emplace(c.end(), *it) Yes
4066(i) New [range.utility.conv.to] ranges::to should reserve when sized_sentinel_for is satisfied Yes
4008(i) New [range.utility.conv.to] §[range.utility.conv.to] ranges::to may cause infinite recursion if range_value_t<C> is a non-move-constructible range Yes 3
4018(i) New [range.utility.conv.to] ranges::to's copy branch is underconstrained Yes 3
3722(i) New [range.utility.conv.to] ranges::to reserves the wrong size Yes 4
3845(i) New [range.utility.conv.to] ranges::to's from_range_t tag branch has the wrong constraint Yes 4
3985(i) New [range.utility.conv.to] ranges::to should Mandates C not to be view Yes 3
3983(i) New [range.utility.conv.adaptors] ranges::to adaptors are underconstrained Yes 3
3907(i) New 26.6 [range.factories] Can iterator types of range adaptors and range factories be SCARY? No 3
3614(i) New [range.iota.view] iota_view::size and the most negative signed integer values Yes 3
4002(i) New [range.iota.iterator] The definition of iota_view::iterator::iterator_concept should be improved Yes 3
3846(i) New [range.iota.iterator] iota_view::iterator::operator- is overconstrained Yes 3
3609(i) New [range.iota.sentinel] std::ranges::iota_view<int, long> has non-subtractable iterator and sentinel types Yes 3
3955(i) New [range.repeat.view] Add noexcept to several repeat_view[::iterator] member functions Yes 3
3763(i) New [range.repeat.iterator] Should range adaptor iterators only provide iterator_category when its difference_type is not an integer-class type? Yes 3
3489(i) New [range.istream.iterator] Improve istream_view wording Yes 3
3994(i) New 26.7.2 [range.adaptor.object] adaptor(args...)(r) is not equivalent to std::bind_back(adaptor, args...)(r) No 4
4099(i) New [range.as.rvalue.overview] The simple case of views::as_rvalue and views::common are not strictly correct Yes 4
3829(i) New [range.as.rvalue.view] as_rvalue_view::end should improve non-common case Yes 3
4050(i) New [range.take.overview] Should views::iota(0) | views::take(5) be views::iota(0, 5)? Yes
4009(i) New [range.drop.view] drop_view::begin const may have 𝒪(n) complexity Yes
3730(i) New [range.drop.view] std::ranges::drop_view may have different size type from its underlying view Yes 3
3666(i) New 26.7.14 [range.join] join_view's difference type is too small No 2
3873(i) New [range.join.with.view] join_with_view's const begin is underconstrained No 3
4059(i) New [range.join.with.iterator] Leaky abstraction in join_with_view's iterator No 3
3852(i) New [range.join.with.iterator] join_with_view::iterator's iter_move and iter_swap should be conditionally noexcept Yes 3
3972(i) New [range.join.with.iterator] Issues with join_with_view::iterator's iter_swap No 2
4108(i) New [range.lazy.split.view] lazy_split_view should be sized_range when pattern is empty tiny-range Yes
3855(i) New [range.lazy.split.view] tiny-range is not quite right Yes 4
3685(i) New [range.lazy.split.view] In lazy_split_view, CTAD doesn't work when given an input_range input and a tiny-range pattern Yes 3
3599(i) New [range.lazy.split.view] The const overload of lazy_split_view::begin should be constrained by const Pattern Yes 3
3686(i) New [range.lazy.split.outer] In lazy_split_view, comparing a default-constructed outer-iterator or inner-iterator with std::default_sentinel results in null pointer dereference Yes 3
4017(i) New [range.split.iterator] Behavior of std::views::split on an empty range Yes 3
4073(i) New [range.concat.view] concat_view::size may overflow No 4
4091(i) New [range.concat.view] concat_view rejects non-movable references Yes 4
4089(i) New [range.concat.iterator] concat_view::iterator's iter_swap is overconstrained Yes 3
4081(i) New [range.concat.iterator] concat_view::iterator::operator- is overconstrained Yes
3830(i) New [range.reverse.view] reverse_view should not cache when ranges::next has constant time complexity Yes 3
3797(i) New [range.elements.view] elements_view insufficiently constrained Yes 2
3832(i) New [range.elements.iterator] Missing change for element_view::iterator in LWG 3798 Yes 3
4114(i) New [range.elements.iterator] elements_view::iterator::operator* missing conditional noexcept specification Yes
4116(i) New [range.enumerate.iterator] enumerate_view::iterator and cartesian_product_view::iterator should not always provide iterator_category Yes
3864(i) New 26.7.25 [range.zip] zip over range of reference to an abstract type No 4
3731(i) New [range.zip.view] zip_view and adjacent_view are underconstrained Yes 3
4119(i) New 26.8.5 [coro.generator.promise] generator::promise_type::yield_value(ranges::elements_of<R, Alloc>)'s nested generator may be ill-formed Yes
4117(i) New 26.8.6 [coro.generator.iterator] generator::iterator should provide iterator_concept Yes
4057(i) New 26.8.6 [coro.generator.iterator] generator::iterator's operator* is not noexcept when it can be No 3
2963(i) New 27 [algorithms] Algorithms with underspecified iterator requirements No 3
3793(i) New 27.6.5 [alg.foreach] Requirements for some algorithms' Size template parameters are unclear No 3
4093(i) New 27.6.18 [alg.fold] ranges::fold_left_first_with_iter incorrectly constructs optional<U> Yes 3
4094(i) New 27.6.18 [alg.fold] ranges::fold_meow is overconstrained Yes 3
3969(i) New 27.6.18 [alg.fold] std::ranges::fold_left_first_with_iter should be more ADL-proof Yes 3
3089(i) New 27.7.1 [alg.copy] copy_n should require non-overlapping ranges Yes 3
4103(i) New 27.7.9 [alg.unique] ranges::unique_copy's constraints for the case where result is an input_iterator are not quite right Yes 3
2267(i) New [partial.sort.copy] partial_sort_copy underspecified for ranges of two different types No 3
4111(i) New 27.8.4 [alg.binary.search] LWG 270 and ranges version of binary search algorithms No 3
4034(i) New 27.8.9 [alg.min.max] Clarify specification of std::min and std::max Yes
3487(i) New 27.10 [numeric.ops] Missing precondition on input and output aliasing of [numeric.ops] No 3
3060(i) New 27.10.8 [exclusive.scan] XXX_scan algorithms are specified to work with move-only T, but are specified to make N copies of T into the destination range No 2
3463(i) New 27.10.11 [transform.inclusive.scan] Incorrect requirements for transform_inclusive_scan without initial value Yes 3
3628(i) New 27.11 [specialized.algorithms] "Effects: Equivalent to:" and uninitialized memory algorithms No 3
3063(i) New 27.11 [specialized.algorithms] Parallel algorithms in <memory> are underspecified No 3
3064(i) New 27.11 [specialized.algorithms] How do uninitialized memory algorithms obtain pointer without undefined behavior? No 3
3647(i) New 27.11.2 [special.mem.concepts] nothrow-input-iterator constraints should not mention copying Yes 3
3888(i) New 27.11.8 [specialized.construct] Most ranges uninitialized memory algorithms are underconstrained Yes 3
3889(i) New 27.11.9 [specialized.destroy] std::(ranges::)destroy_at should destroy array elements in the decreasing index order Yes 3
4085(i) New 27.12.2 [alg.rand.generate] ranges::generate_random's helper lambda should specify the return type Yes
4077(i) New 27.12.2 [alg.rand.generate] Unclear preconditions of std::ranges::generate_random No
3933(i) New 28.4.3 [complex] P1467R9 accidentally changed the signatures of certain constructors of std::complex Yes 4
3934(i) New 28.4.3 [complex] std::complex<T>::operator=(const T&) has no specification Yes 3
2714(i) New 28.4.6 [complex.ops] complex stream extraction underspecified Yes 3
2846(i) New 28.4.10 [cmplx.over] Undefined phrase "effectively cast" Yes 3
4109(i) New [rand.req.genl] Instantiating templates in §[rand] with int8_t/uint8_t is undefined behavior Yes
4014(i) New [rand.eng.sub] LWG 3809 changes behavior of some existing std::subtract_with_carry_engine code Yes 2
3402(i) New [rand.dist.bern.negbin] Wording for negative_binomial_distribution is unclear as a consequence of LWG 2406 resolution No 3
4052(i) New [rand.dist.samp.pconst] Bogus requirements for piecewise_linear_distribution No 4
3964(i) New [valarray.transcend] std::atan2 and std::pow overloads that take two std::valarray parameters should require the arguments to have the same length Yes 4
2423(i) New 28.6.5 [template.slice.array] Missing specification slice_array, gslice_array, mask_array, indirect_array copy constructor Yes 4
3693(i) New 28.7 [c.math] §[c.math] Can any of float/double/long double overloads be fused into template overloads? No 2
2847(i) New 28.7.1 [cmath.syn] sin(float) should call sinf(float) No 3
2923(i) New 28.7.1 [cmath.syn] noexcept is inconsistently applied across headers which import components of the C standard library No 4
3093(i) New 28.7.2 [c.math.abs] LWG 2294/2192 missed a std::abs overload No 3
3172(i) New 28.7.3 [c.math.hypot3] 3-arg std::hypot is underspecified compared to the 2-arg overload Yes 3
3066(i) New 28.7.6 [sf.cmath] "report a domain error" in [sf.cmath]/1 is underspecified No 3
2592(i) New 29.2 [time.syn] Require that chrono::duration_casts from smaller durations to larger durations do not overflow Yes 4
3090(i) New 29.5.2 [time.duration.cons] What is §[time.duration.cons]p4's "no overflow is induced in the conversion" intended to mean? Yes 3
3503(i) New 29.5.8 [time.duration.cast] chrono::ceil has surprising requirement No 3
3678(i) New [time.zone.overview] Constructors of std::chrono::time_zone might be overly unspecified No 4
4067(i) New [time.zone.zonedtime.ctor] Inconsistency and potential infinity meta-recursion in std::chrono::zoned_time's constructors Yes 3
4118(i) New 29.12 [time.format] How should duration formatters format custom rep types? Yes
4022(i) New 29.12 [time.format] Ambiguity in the formatting of negative years with format specifier %C Yes
3856(i) New 29.12 [time.format] Unclear which conversion specifiers are valid for each chrono type Yes 3
3921(i) New 29.12 [time.format] Is std::chrono::duration<std::int64_t, std::ratio<INT64_MAX - 1, INT64_MAX>>{40} required to be correctly formatted? No 3
3831(i) New 29.12 [time.format] Two-digit formatting of negative year is ambiguous Yes 3
3962(i) New 29.13 [time.parse] What is the "decimal precision of the input"? Yes 3
3960(i) New 29.13 [time.parse] How does chrono::parse handle duplicated data? Yes 3
3961(i) New 29.13 [time.parse] Does chrono::parse check format strings? Yes 3
3956(i) New 29.13 [time.parse] chrono::parse uses from_stream as a customization point No 3
3353(i) New 30.3.1 [locale] locale's copy assignment operator should return locale& Yes 3
3674(i) New [locale.members] Removal of requirement for locale names for construction of locales not explained Yes 2
3337(i) New [locale.codecvt.virtuals] What is "is initialized" supposed to mean? No 3
3689(i) New [facet.num.get.virtuals] num_get overflow determination unclear and incorrect No 3
3214(i) New [facet.num.get.virtuals] §[facet.num.get.virtuals] doesn't say what it means for digit grouping to be consistent No 4
2703(i) New [facet.num.put.virtuals] No provision for fill-padding when boolalpha is set No 3
2702(i) New [facet.num.put.virtuals] num_put::do_put(..., bool) performs ill-formed do_put call No 3
3275(i) New [locale.time.get.virtuals] Why does time_get::do_get require a valid pointer when none of the others do? Yes 3
2983(i) New [locale.money.put.virtuals] money_put::do_put underspecified Yes 3
2691(i) New [locale.moneypunct] money_base::space and do_put: U+0020 versus fill Yes 3
3696(i) New 31.2.2 [stream.types] "Basic integral types" should not be used No 3
3910(i) New 31.4.2 [iostream.objects.overview] The effects of including <iostream> on initialization are not yet precisely specified Yes 4
3675(i) New [ios.base.storage] std::ios_base::iword/pword might be misspecified Yes 4
2675(i) New [ios.base.callback] register_callback can fail No 3
2504(i) New 31.6.3 [streambuf] basic_streambuf is not an abstract class No 3
3658(i) New [streambuf.pub.put] basic_streambuf::sputn is both overspecified and underspecified Yes 3
2342(i) New [ostream] User conversion to wchar_t const* or to wchar_t not invoked for operator<< Yes 4
2497(i) New [ostream.sentry] Use of uncaught_exception() Yes 3
4101(i) New [ostream.inserters.arithmetic] LWG 117 loses the sign for negative NaN on some architectures Yes 3
4088(i) New [ostream.formatted.print] println ignores the locale imbued in std::ostream Yes
4039(i) New [ostream.formatted.print] §[ostream.formatted.print]: Inappropriate usage of badbit in definition of vprint_unicode/vprint_nonunicode Yes
3501(i) New [ostream.manip] basic_syncbuf-related manipulators refer to some Allocator without defining it Yes 3
3937(i) New 31.7.7 [std.manip] I/O manipulators should be specified in terms of base classes No 3
2984(i) New 31.7.8 [ext.manip] put_money(99) is unnecessarily undefined Yes 3
3309(i) New 31.8 [string.streams] Is <ios> implicitly #included by <sstream>, <fstream> etc.? No 3
3992(i) New [stringbuf.members] basic_stringbuf::str()&& should enforce 𝒪(1) Yes
3097(i) New [stringbuf.virtuals] basic_stringbuf seekoff effects trigger undefined behavior and have contradictory returns No 3
3496(i) New [syncstream.syncbuf.members] What does "uniquely associated" mean for basic_syncbuf::emit()? No 3
3497(i) New [syncstream.syncbuf.members] Postconditions for basic_syncbuf::emit() No 3
3098(i) New [fs.path.decompose] Misleading example for filesystem::path::filename() Yes 3
3699(i) New [fs.path.gen] lexically_relative on UNC drive paths (\\?\C:\...) results in a default-constructed value No 3
3794(i) New [fs.path.itr] std::filesystem::path::iterator::reference should be allowed to be std::filesystem::path Yes 3
2947(i) New [fs.enum.path.format] Clarify several filesystem terms No 3
3078(i) New 31.12.10 [fs.class.directory.entry] directory_entry, directory_iterator and recursive_directory_iterator perform needless path copies No 3
3668(i) New [fs.dir.itr.members] [recursive_]directory_iterator constructors refer to undefined options Yes 3
3056(i) New [fs.op.copy.file] copy_file() copies which attributes? Yes 3
3744(i) New [fs.op.copy.symlink] copy_symlink(junction, new_symlink)'s behavior is unclear No 3
2490(i) New 32 [re] <regex> needs lots of noexcept No 3
3835(i) New 32.1 [re.general] Requirements for CharT in the regex library No 4
3606(i) New 32.2 [re.req] Missing regex_traits::locale_type requirements No 3
2431(i) New 32.2 [re.req] Missing regular expression traits requirements No 3
3998(i) New 32.4 [re.const] Constants in std::regex_constants should be allowed to be enumerators No 3
3605(i) New 32.4.3 [re.matchflag] regex_constants::match_prev_avail is underspecified No 3
3261(i) New 32.7 [re.regex] regex components' noexcept annotations appear broken for POCMA or throwing BidirectionalIterator No 3
3341(i) New 32.7.2 [re.regex.construct] basic_regex range constructor: Missing requirements for iterator types No 3
3630(i) New 32.7.2 [re.regex.construct] Inconsistent basic_regex construction and assignment from iterator range No 4
3603(i) New 32.7.2 [re.regex.construct] Matching of null characters by regular expressions is underspecified No 3
3604(i) New 32.7.2 [re.regex.construct] What is the effect of an invalid value of type syntax_option_type? No 3
3126(i) New 32.8 [re.submatch] There's no std::sub_match::compare(string_view) overload Yes 3
2216(i) New 32.10.4 [re.alg.replace] regex_replace(basic_string) allocator handling No 3
2986(i) New 32.12 [re.grammar] Handling of multi-character collating elements by the regex FSM is underspecified No 4
2987(i) New 32.12 [re.grammar] Relationship between traits_inst.lookup_collatename and the regex FSM is underspecified with regards to ClassAtomCollatingElement No 3
2546(i) New 32.12 [re.grammar] Implementability of locale-sensitive UnicodeEscapeSequence matching No 4
2819(i) New 33.2.5 [thread.req.lockable] Unspecified Return type: elements Yes 3
3499(i) New [thread.req.lockable.timed] Timed lockable and mutex requirements are imprecise about duration and time_point No 3
3924(i) New 33.3.1 [thread.stoptoken.intro] Stop token data race avoidance requirements unclear Yes 3
3516(i) New [thread.thread.id] thread::id spaceship may be inconsistent with equality Yes 3
3475(i) New [thread.thread.constr] std::thread's constructor needs to be able to report general memory allocation failures Yes 3
3633(i) New 33.5 [atomics] Atomics are copy constructible and copy assignable from volatile atomics Yes 3
3220(i) New 33.5.2 [atomics.syn] P0558 broke conforming C++14 uses of atomic shared_ptr Yes 3
3999(i) New 33.5.4 [atomics.order] P0439R0 changed the value category of memory order constants Yes 4
3268(i) New 33.5.4 [atomics.order] memory_order::memory_order_foo broken in C++20 Yes 4
3263(i) New 33.5.6 [atomics.wait] Atomic waiting function calls should only be unblocked once Yes 3
3288(i) New 33.5.6 [atomics.wait] atomic<T>::notify_one is unimplementable Yes 2
3409(i) New [atomics.ref.ops] Too lax description of atomic_ref<T>::required_alignment Yes 3
3047(i) New [atomics.types.int] atomic compound assignment operators can cause undefined behavior when corresponding fetch_meow members don't Yes 3
3906(i) New [atomics.types.pointer] "Undefined address" is undefined No 3
3418(i) New 33.5.9 [atomics.nonmembers] Deprecated free functions in <atomic> Yes 3
3504(i) New 33.7.4 [thread.condition.condvar] condition_variable::wait_for is overspecified Yes 3
3898(i) New [thread.barrier.class] Possibly unintended preconditions for completion functions of std::barrier Yes 3
3582(i) New 33.10.9 [futures.async] Unclear where std::async exceptions are handled Yes 3
2479(i) New 99 [depr.conversions.buffer] Unclear how wbuffer_convert uses cvtstate No 4
2480(i) New 99 [depr.conversions.buffer] Error handling of wbuffer_convert unclear No 4
2478(i) New 99 [depr.conversions.string] Unclear how wstring_convert uses cvtstate No 4
2481(i) New 99 [depr.conversions.string] wstring_convert should be more precise regarding "byte-error string" etc. No 4
2507(i) New 99 [depr.locale.stdcvt] codecvt_mode should be a bitmask type No 3
3109(i) New 99 [depr.strstreambuf] strstreambuf is copyable No 4
3095(i) New 99 [depr.strstreambuf.virtuals] strstreambuf refers to nonexistent member of fpos, fpos::offset Yes 4
3812(i) New [fund.ts.v3::propagate_const.const_observers] [fund.ts.v3] Incorrect constraint on propagate_const conversion function Yes 3
3124(i) New 13.7.5 [networking.ts::async.exec.ctx.globals] [networking.ts] Unclear how execution_context is intended to store services Yes 3
3021(i) New 16.2.2 [networking.ts::buffer.reqmts.constbuffersequence] [networking.ts] Relax pointer equivalence requirement for ConstBufferSequence Yes 3
3027(i) New 16.2.4 [networking.ts::buffer.reqmts.dynamicbuffer] [networking.ts] DynamicBuffer prepare exception specification Yes 3
3072(i) New 16.2.4 [networking.ts::buffer.reqmts.dynamicbuffer] [networking.ts] DynamicBuffer object lifetimes underspecified Yes 3
3073(i) New 17 [networking.ts::buffer.stream] [networking.ts] (async_)read and (async_)write don't support DynamicBuffer lvalues Yes 3
3444(i) New 19.1.2 [networking.ts::socket.streambuf.members] [networking.ts] net::basic_socket_streambuf::connect(Args&&...) effects are wrong No 2

Open (78 issues)

Issue Status Section Title Proposed Resolution Priority Duplicates
2136(i) Open 16.3.2 [structure] Postconditions vs. exceptions No 3
3092(i) Open [bitmask.types] Unclear semantics of enum class bitmask types Yes 3
2146(i) Open [utility.arg.requirements] Are reference types Copy/Move-Constructible/Assignable or Destructible? No 3
2414(i) Open [reentrancy] Member function reentrancy should be implementation-defined Yes 3
2730(i) Open 17.3.5 [numeric.limits] numeric_limits primary template definition No 3
2398(i) Open 17.7.3 [type.info] type_info's destructor shouldn't be required to be virtual Yes 3
2088(i) Open 17.9.5 [exception.terminate] std::terminate problem No 3
3011(i) Open 19.3 [assertions] Requirements for assert(E) inconsistent with C No 2
3507(i) Open [stacktrace.entry.query] P0881R7 ("stacktrace") does not define "actual file name", "actual line number" No 2
2262(i) Open [unique.ptr.single] Requirement for unique_ptr<T>::get_deleter()(p) to be able to destroy the unique_ptr Yes 3
2290(i) Open 21 [meta] Top-level "SFINAE"-based constraints should get a separate definition in Clause 17 Yes 3
2116(i) Open [meta.unary.prop] is_nothrow_constructible and destructors No 3
2358(i) Open [meta.unary.prop] Apparently-bogus definition of is_empty type trait Yes 3
2077(i) Open [meta.unary.prop] Further incomplete constraints for type traits No 3
2289(i) Open 22.3.2 [pairs.pair] constexpr guarantees of defaulted functions still insufficient No 3
2990(i) Open 22.5.3 [optional.optional] optional::value_type is not always a value type Yes 3
2829(i) Open [optional.observe] LWG 2740 leaves behind vacuous words No 2
4015(i) Open [optional.monadic] LWG 3973 broke const overloads of std::optional monadic operations Yes 1
2833(i) Open [variant.ctor] Library needs to specify what it means when it declares a function constexpr Yes 2
2348(i) Open 22.9.2 [template.bitset] charT('1') is not the wide equivalent of '1' Yes 3
3081(i) Open 22.13.3 [charconv.from.chars] Floating point from_chars API does not distinguish between overflow and underflow Yes 2
3082(i) Open 22.13.3 [charconv.from.chars] from_chars specification regarding floating point rounding is inconsistent Yes 2
2238(i) Open 23.5 [c.strings] Problematic iterator-pair constructor of containers No 3
2321(i) Open 24.2.2 [container.requirements.general] Moving containers should (usually) be required to preserve iterators Yes 3
1521(i) Open 24.2.2 [container.requirements.general] Requirements on internal pointer representations in containers Yes 3
2206(i) Open 24.2.4 [sequence.reqmts] Inaccuracy in initializer_list constructor requirements Yes 3
2844(i) Open 24.2.7 [associative.reqmts] Stability of a_uniq.insert(i, j) No 3
2227(i) Open 24.2.7 [associative.reqmts] Stateful comparison objects in associative containers No 3
2215(i) Open 24.2.7 [associative.reqmts] (unordered) associative container functors should be CopyConstructible Yes 3
1175(i) Open 24.2.8 [unord.req] unordered complexity Yes 3
2198(i) Open 24.2.8 [unord.req] max_load_factor(z) makes no strong guarantees, but bans useful behavior Yes 3
2189(i) Open [unord.req.except] Throwing swap breaks unordered containers' state No 3
617(i) Open 24.3.8 [array] std::array is a sequence that doesn't satisfy the sequence requirements? No 3
2823(i) Open [array.overview] std::array initialization is still not permissive enough Yes 3
3488(i) Open [array.special] Is array<const int, 0> swappable or not? Yes 3
2157(i) Open [array.zero] How does std::array<T,0> initialization work when T is not default-constructible? Yes 3
2158(i) Open [vector.capacity] Conditional copy/move in std::vector Yes 3
1102(i) Open [vector.capacity] std::vector's reallocation policy still unclear Yes 3
1422(i) Open 24.3.13 [vector.bool] vector<bool> iterators are not random access No 3
3161(i) Open 24.6.8 [stack] Container adapters mandate use of emplace_back but don't require it Yes 3
1213(i) Open 25.3 [iterator.requirements] Meaning of valid and singular iterator underspecified No 4
484(i) Open [input.iterators] Convertible to T No 3
2962(i) Open [input.iterators] Iterators of Containers of move-only types do not model InputIterator Yes 2
2035(i) Open [output.iterators] Output iterator requirements are broken Yes 3
2038(i) Open [output.iterators] Missing definition for incrementable iterator No 3
2931(i) Open 25.4.3 [iterator.operations] Missed optimization opportunity with single-argument std::next No 3
3988(i) Open 25.5.3 [const.iterators] Should as_const_view and basic_const_iterator provide base()? Yes 3
3777(i) Open [range.cartesian.view] Common cartesian_product_view produces an invalid range if the first range is input and one of the ranges is empty Yes 2
1238(i) Open 27 [algorithms] Defining algorithms taking iterator for range No 3
2173(i) Open 27 [algorithms] The meaning of operator + in the description of the algorithms Yes 4
3049(i) Open 27.2 [algorithms.requirements] Missing wording allowing algorithms to use copies of function objects as substitutes for their parameters Yes 3
2471(i) Open 27.7.1 [alg.copy] copy_n's number of InputIterator increments unspecified No 3
3029(i) Open [pop.heap] pop_heap over-constrains input Yes 3
2115(i) Open 28.6.8 [template.mask.array] Undefined behaviour for valarray assignments with mask_array index? No 4
2383(i) Open 29.5.9 [time.duration.literals] Overflow cannot be ill-formed for chrono::duration integer literals No 3
3844(i) Open 29.12 [time.format] Non-numeric formats for negative durations Yes 3
2117(i) Open [facet.num.put.virtuals] ios_base manipulators should have showgrouping/noshowgrouping No 3
2512(i) Open [locale.time.get.virtuals] Y2K bites; what is an "unambiguous year identifier"? No 4
423(i) Open 31 [input.output] Effects of negative streamsize in iostreams Yes 3
2214(i) Open [basic.ios.cons] Clarify basic_ios::init call restrictions Yes 4
2286(i) Open [stringbuf.virtuals] stringbuf::underflow() underspecified Yes 4
2708(i) Open [fs.rec.dir.itr.members] recursive_directory_iterator::recursion_pending() is incorrectly specified Yes 2
3057(i) Open [fs.op.copy] Correct copy_options handling Yes 2
523(i) Open 32 [re] regex case-insensitive character ranges are unimplementable as specified No 4
2331(i) Open 32.4.2 [re.synopt] regex_constants::collate's effects are inaccurately summarized Yes 3
2338(i) Open 32.6 [re.traits] §[re.traits]/7 expects of locale facets something not guaranteed by [locale.facet]/4 Yes 3
2137(i) Open 32.7.3 [re.regex.assign] Misleadingly constrained post-condition in the presence of exceptions Yes 3
2220(i) Open [re.tokiter.comp] Under-specification of operator== for regex_token_iterator Yes 3
2265(i) Open 33.5.4 [atomics.order] 29.3p9 appears to rule out some acceptable executions No 4
3508(i) Open [atomics.ref.generic.general] atomic_ref<cv T> is not well-specified No 2
4069(i) Open 33.5.8 [atomics.types.generic] std::atomic<volatile T> should be ill-formed No 2
3343(i) Open 33.7.3 [thread.condition.nonmember] Ordering of calls to unlock() and notify_all() in Effects element of notify_all_at_thread_exit() should be reversed Yes 3
2530(i) Open 33.10.5 [futures.state] Clarify observable side effects of releasing a shared state No 3
3003(i) Open 33.10.6 [futures.promise] <future> still has type-erased allocators in promise Yes 2
2532(i) Open 33.10.6 [futures.promise] Satisfying a promise at thread exit Yes 3
3840(i) Open D.21 [depr.fs.path.factory] filesystem::u8path should be undeprecated Yes 3
3167(i) Open 5.2 [fund.ts.v3::memory.observer.ptr] [fund.ts.v3] Does observer_ptr support function types? No 3
3357(i) Open 99 [fund.ts.v3::rand.util.randint] [fund.ts.v3] default_random_engine is overspecified for per-thread engine Yes 3

LEWG (28 issues)

Issue Status Section Title Proposed Resolution Priority Duplicates
2152(i) LEWG [swappable.requirements] Instances of standard container types are not swappable Yes 3
3454(i) LEWG 20.2.3 [pointer.traits] pointer_traits::pointer_to should be constexpr Yes
2922(i) LEWG 21.3.3 [meta.type.synop] The *_constant<> templates do not make use of template<auto> No
3486(i) LEWG [meta.unary.prop] is_constructible<T[], T...> may be misleading in C++20 No
2153(i) LEWG 22.2.2 [utility.swap] Narrowing of the non-member swap contract No 2
532(i) LEWG 22.4.9 [tuple.rel] Tuple comparison Yes 348
2991(i) LEWG [variant.ctor] variant copy constructor missing noexcept(see below) Yes
2883(i) LEWG 23.3 [string.view] The standard library should provide string_view parameters instead or in addition for functions defined with char const * or string const & as parameter types. No
2307(i) LEWG 24 [containers] Should the Standard Library use explicit only when necessary? No 2
2885(i) LEWG 24 [containers] The relational operators of optional and variant completely reflect the semantics of the element types — this is inconsistent with other types in the library No
2884(i) LEWG 24 [containers] Relational operators for containers should sfinae; if the underlying type is not comparable, neither should the container be No
3679(i) LEWG 26.6.6 [range.istream] Is <ranges> sufficient for istream_view? No 3
4097(i) LEWG [range.reverse.overview] views::reverse should be specialized for some view types Yes 3
3868(i) LEWG 27.7.5 [alg.replace] Constrained algorithms should not require output_iterator Yes 4
2985(i) LEWG 27.7.10 [alg.reverse] std::reverse should be permitted to be vectorized Yes
2973(i) LEWG 27.8.6 [alg.merge] inplace_merge exact comparison count complexity prohibits useful real-world optimizations Yes
3534(i) LEWG [set.intersection] ranges::set_intersection and ranges::set_difference algorithm requirements are too strict Yes 3
4084(i) LEWG [facet.num.put.virtuals] std::fixed ignores std::uppercase Yes 3
4042(i) LEWG 31.7.10 [print.fun] std::print should permit an efficient implementation Yes 3
1484(i) LEWG 33.4.3 [thread.thread.class] Need a way to join a thread with a timeout No
1459(i) LEWG 33.5.4 [atomics.order] Overlapping evaluations are allowed No 1458
1488(i) LEWG 33.6 [thread.mutex] Improve interoperability between the C++0x and C1x threads APIs No
936(i) LEWG 33.6.4 [thread.mutex.requirements] Mutex type overspecified No 961
961(i) LEWG 33.6.4 [thread.mutex.requirements] Various threading bugs #11 No 936
1493(i) LEWG 33.6.4 [thread.mutex.requirements] Add mutex, recursive_mutex, is_locked function No
2095(i) LEWG 33.10.6 [futures.promise] promise and packaged_task missing constructors needed for uses-allocator construction Yes 4
3114(i) LEWG 16 [networking.ts::buffer] [networking.ts] Permit efficient composition when using DynamicBuffer Yes
3445(i) LEWG 19.2.1 [networking.ts::socket.iostream.cons] [networking.ts] net::basic_socket_istream::connect should be constrained Yes 3

Core (1 issues)

Issue Status Section Title Proposed Resolution Priority Duplicates
2452(i) Core 21 [meta] is_constructible, etc. and default arguments No 3

SG1 (7 issues)

Issue Status Section Title Proposed Resolution Priority Duplicates
2506(i) SG1 6.9.2 [intro.multithread] Underspecification of atomics No 3
4075(i) SG1 16.4.4 [utility.requirements] Thread stability requirement on constructors and destructors No 3
2236(i) SG1 33.5.2 [atomics.syn] kill_dependency unconditionally noexcept No
4004(i) SG1 33.5.4 [atomics.order] The load and store operation in §[atomics.order] p1 is ambiguous No 3
3941(i) SG1 33.5.4 [atomics.order] §[atomics.order] inadvertently prohibits widespread implementation techniques No 3
3417(i) SG1 [atomics.types.operations] Missing volatile atomic deprecations Yes 3
2533(i) SG1 99 [concurr.ts::futures.unique.future] [concurr.ts] Constrain threads where future::then can run a continuation No

SG9 (1 issues)

Issue Status Section Title Proposed Resolution Priority Duplicates
4019(i) SG9 26.7.21 [range.reverse] Reversing an infinite range leads to an infinite loop No 3

SG16 (3 issues)

Issue Status Section Title Proposed Resolution Priority Duplicates
4087(i) SG16 17.9.3 [exception] Standard exception messages have unspecified encoding Yes 3
4090(i) SG16 [format.string.std] Underspecified use of locale facets for locale-dependent std::format No 3
4070(i) SG16 [fs.path.fmtr.funcs] Transcoding by std::formatter<std::filesystem::path> Yes 2

Deferred (1 issues)

Issue Status Section Title Proposed Resolution Priority Duplicates
2202(i) Deferred 33.10.9 [futures.async] Missing allocator support by async No 4

Pending NAD Editorial (4 issues)

Issue Status Section Title Proposed Resolution Priority Duplicates
2178(i) Pending NAD Editorial [allocator.requirements] Allocator requirement changes not mentioned Annex C Yes 3
2126(i) Pending NAD Editorial 33.6.4 [thread.mutex.requirements] Several specification problems in regard to mutex requirements Yes
2134(i) Pending NAD Editorial [thread.mutex.requirements.mutex] Redundant Mutex requirement? Yes
2125(i) Pending NAD Editorial [thread.timedmutex.requirements] TimedMutex specification problem Yes

Pending NAD (2 issues)

Issue Status Section Title Proposed Resolution Priority Duplicates
2382(i) Pending NAD [reentrancy] Unclear order of container update versus object destruction on removing an object Yes 2
2302(i) Pending NAD [new.delete.placement] Passing null pointer to placement new Yes 2

NAD Future (4 issues)

Issue Status Section Title Proposed Resolution Priority Duplicates
1025(i) NAD Future 22.10.19 [unord.hash] The library should provide more specializations for std::hash Yes
2654(i) NAD Future 1 [filesys.ts::fs.scope] [filesys.ts] [PDTS] Concerns with security and testability Yes
2611(i) NAD Future 6 [filesys.ts::fs.filesystem.synopsis] [filesys.ts] [PDTS] Lack of relative() operation function Yes
2612(i) NAD Future 6 [filesys.ts::fs.filesystem.synopsis] [filesys.ts] [PDTS] uintmax_t too small for large file sizes Yes

WP (73 issues)

Issue Status Section Title Proposed Resolution Priority Duplicates
2392(i) WP 3.35 [defns.ntcts] "character type" is used but not defined Yes 3
3885(i) WP [zombie.names] 'op' should be in [zombie.names] Yes
4076(i) WP 17.3.2 [version.syn] concat_view should be freestanding Yes
3887(i) WP 17.3.2 [version.syn] Version macro for allocate_at_least Yes
3897(i) WP [inout.ptr.t] inout_ptr will not update raw pointer to 0 Yes 2
3990(i) WP 22.4.4 [tuple.tuple] Program-defined specializations of std::tuple and std::variant can't be properly supported Yes
4045(i) WP [tuple.cnstr] tuple can create dangling references from tuple-like Yes
3305(i) WP 22.7.5 [any.nonmembers] any_cast<void> Yes 2
4031(i) WP 22.8.5 [expected.bad.void] bad_expected_access<void> member functions should be noexcept Yes
3951(i) WP [expected.object.swap] §[expected.object.swap]: Using value() instead of has_value() Yes
3938(i) WP [expected.object.monadic] Cannot use std::expected monadic ops with move-only error_type Yes
3973(i) WP [expected.object.monadic] Monadic operations should be ADL-proof Yes
4025(i) WP [expected.void.assign] Move assignment operator of std::expected<cv void, E> should not be conditionally deleted Yes
3940(i) WP [expected.void.obs] std::expected<void, E>::value() also needs E to be copy constructible Yes
4071(i) WP [refwrap.comparisons] reference_wrapper comparisons are not SFINAE-friendly Yes
3925(i) WP [format.formattable] Concept formattable's definition is incorrect Yes
3944(i) WP [format.formatter.spec] Formatters converting sequences of char to sequences of wchar_t Yes 3
3965(i) WP [format.string.escaped] Incorrect example in [format.string.escaped] p3 for formatting of combining characters Yes
4061(i) WP [format.context] Should std::basic_format_context be default-constructible/copyable/movable? Yes
3975(i) WP [format.context] Specializations of basic_format_context should not be permitted Yes 3
3892(i) WP [format.range.formatter] Incorrect formatting of nested ranges and tuples Yes 2
4106(i) WP [format.args] basic_format_args should not be default-constructible Yes
2994(i) WP 23.2 [char.traits] Needless UB for basic_string and basic_string_view Yes 3
3950(i) WP 23.3.2 [string.view.synop] std::basic_string_view comparison operators are overspecified Yes
3431(i) WP [container.opt.reqmts] <=> for containers should require three_way_comparable<T> instead of <=> Yes 2
3957(i) WP [container.alloc.reqmts] §[container.alloc.reqmts] The value category of v should be claimed Yes
3927(i) WP 24.2.4 [sequence.reqmts] Unclear preconditions for operator[] for sequence containers Yes
3884(i) WP 24.6.9 [flat.map] flat_foo is missing allocator-extended copy/move constructors Yes
3203(i) WP [span.overview] span element access invalidation Yes 2
3903(i) WP [span.overview] span destructor is redundantly noexcept Yes
4011(i) WP [span.elem] "Effects: Equivalent to return" in [span.elem] Yes
3970(i) WP [mdspan.syn] §[mdspan.syn] Missing definition of full_extent_t and full_extent Yes
3974(i) WP [mdspan.mdspan.members] mdspan::operator[] should not copy OtherIndexTypes Yes
4060(i) WP [mdspan.sub.sub] submdspan preconditions do not forbid creating invalid pointer Yes
3749(i) WP 25.5.5 [iterators.common] common_iterator should handle integer-class difference types Yes 2
3953(i) WP [common.iter.cust] iter_move for common_iterator and counted_iterator should return decltype(auto) Yes
3987(i) WP 25.7 [iterator.range] Including <flat_foo> doesn't provide std::begin/end Yes
3914(i) WP 26.2 [ranges.syn] Inconsistent template-head of ranges::enumerate_view Yes
3946(i) WP 26.2 [ranges.syn] The definition of const_iterator_t should be reworked Yes
3948(i) WP 26.2 [ranges.syn] possibly-const-range and as-const-pointer should be noexcept Yes
3915(i) WP 26.4.2 [range.range] Redundant paragraph about expression variations Yes
4016(i) WP 26.5.7 [range.utility.conv] container-insertable checks do not match what container-inserter does Yes
3984(i) WP [range.utility.conv.to] ranges::to's recursion branch may be ill-formed Yes 3
4035(i) WP [range.single.view] single_view should provide empty Yes
4096(i) WP [range.iota.overview] views::iota(views::iota(0)) should be rejected Yes
4001(i) WP [range.iota.view] iota_view should provide empty Yes
4054(i) WP [range.repeat.overview] Repeating a repeat_view should repeat the view Yes
4053(i) WP [range.repeat.view] Unary call to std::views::repeat does not decay the argument Yes
4083(i) WP [range.as.rvalue.overview] views::as_rvalue should reject non-input ranges Yes
4074(i) WP [range.join.with.view] compatible-joinable-ranges is underconstrained Yes
3904(i) WP [range.lazy.split.outer] lazy_split_view::outer-iterator's const-converting constructor isn't setting trailing_empty_ Yes
4013(i) WP [range.lazy.split.outer.value] lazy_split_view::outer-iterator::value_type should not provide default constructor Yes
4082(i) WP [range.concat.overview] views::concat(r) is well-formed when r is an output_range Yes
4079(i) WP [range.concat.iterator] Missing Preconditions in concat_view::iterator's conversion constructor Yes
4012(i) WP [range.common.view] common_view::begin/end are missing the simple-view check Yes
3919(i) WP 26.7.24 [range.enumerate] enumerate_view may invoke UB for sized common non-forward underlying ranges Yes 3
3912(i) WP [range.enumerate.iterator] enumerate_view::iterator::operator- should be noexcept Yes
4098(i) WP [range.adjacent.overview] views::adjacent<0> should reject non-forward ranges Yes
3947(i) WP [range.adjacent.transform.view] Unexpected constraints on adjacent_transform_view::base() Yes
3894(i) WP 26.8.5 [coro.generator.promise] generator::promise_type::yield_value(ranges::elements_of<Rng, Alloc>) should not be noexcept Yes
4105(i) WP 27.6.17 [alg.ends.with] ranges::ends_with's Returns misses difference casting Yes
4030(i) WP [numeric.sat.func] Clarify whether arithmetic expressions in [numeric.sat.func] are mathematical or C++ Yes
3905(i) WP 28.3.1 [cfenv.syn] Type of std::fexcept_t Yes
3935(i) WP 28.4.3 [complex] template<class X> constexpr complex& operator=(const complex<X>&) has no specification Yes
3809(i) WP [rand.eng.sub] Is std::subtract_with_carry_engine<uint16_t> supposed to work? Yes 3
3767(i) WP [locale.category] codecvt<charN_t, char8_t, mbstate_t> incorrectly added to locale Yes 3
4037(i) WP [category.ctype.general] Static data members of ctype_base are not yet required to be usable in constant expressions Yes
4043(i) WP [text.encoding.general] "ASCII" is not a registered character encoding Yes
4038(i) WP [text.encoding.aliases] std::text_encoding::aliases_view should have constexpr iterators Yes
4023(i) WP [streambuf.protected] Preconditions of std::basic_streambuf::setg/setp Yes
3949(i) WP [atomics.types.generic.general] std::atomic<bool>'s trivial destructor dropped in C++17 spec wording Yes
3893(i) WP [util.smartptr.atomic.shared] LWG 3661 broke atomic<shared_ptr<T>> a; a = nullptr; Yes
4036(i) WP D.11 [depr.c.macros] __alignof_is_defined is only implicitly specified in C++ and not yet deprecated Yes

C++23 (313 issues)

Issue Status Section Title Proposed Resolution Priority Duplicates
3818(i) C++23 16.3.3 [conventions] Exposition-only concepts are not described in library intro Yes
3724(i) C++23 [expos.only.entity] decay-copy should be constrained Yes 3
3753(i) C++23 [freestanding.item] Clarify entity vs. freestanding entity Yes 2
2818(i) C++23 [contents] "::std::" everywhere rule needs tweaking Yes 2
3784(i) C++23 [std.modules] std.compat should not provide ::byte and its friends Yes
3871(i) C++23 [compliance] Adjust note about terminate Yes
3775(i) C++23 [allocator.requirements.general] Broken dependencies in the Cpp17Allocator requirements Yes
3177(i) C++23 [namespace.std] Limit permission to specialize variable templates to program-defined types Yes 3
3441(i) C++23 [namespace.std] Misleading note about calls to customization points Yes 1
2839(i) C++23 [lib.types.movedfrom] Self-move-assignment of library types, again Yes 2
3841(i) C++23 17.3.2 [version.syn] <version> should not be "all freestanding" Yes
3437(i) C++23 17.3.2 [version.syn] __cpp_lib_polymorphic_allocator is in the wrong header Yes 0
3621(i) C++23 17.3.2 [version.syn] Remove feature-test macro __cpp_lib_monadic_optional Yes
3750(i) C++23 17.3.2 [version.syn] Too many papers bump __cpp_lib_format Yes
3751(i) C++23 17.3.2 [version.syn] Missing feature macro for flat_set Yes
3792(i) C++23 17.3.2 [version.syn] __cpp_lib_constexpr_algorithms should also be defined in <utility> Yes
3807(i) C++23 17.3.2 [version.syn] The feature test macro for ranges::find_last should be renamed Yes
2820(i) C++23 17.4.1 [cstdint.syn] Clarify <cstdint> macros Yes 3
3828(i) C++23 17.4.1 [cstdint.syn] Sync intmax_t and uintmax_t with C2x Yes
3495(i) C++23 17.6.5 [ptr.launder] constexpr launder makes pointers to inactive members of unions usable Yes 3
3465(i) C++23 17.11.6 [cmp.alg] compare_partial_order_fallback requires F < E Yes 0
3460(i) C++23 [coroutine.handle.noop.resumption] Unimplementable noop_coroutine_handle guarantees Yes 2
3756(i) C++23 17.13.5 [support.signal] Is the std::atomic_flag class signal-safe? Yes 3
3827(i) C++23 17.14.4 [stdalign.h.syn] Deprecate <stdalign.h> and <stdbool.h> macros Yes
3782(i) C++23 17.14.7 [support.c.headers.other] Should <math.h> declare ::lerp? Yes
3461(i) C++23 18.4.4 [concept.convertible] convertible_to's description mishandles cv-qualified void Yes 0
3557(i) C++23 18.4.4 [concept.convertible] The static_cast expression in convertible_to has the wrong operand Yes
3421(i) C++23 18.5.2 [concept.booleantestable] Imperfect ADL emulation for boolean-testable Yes 0
3629(i) C++23 19.5 [syserr] make_error_code and make_error_condition are customization points Yes 2
3869(i) C++23 19.5.2 [system.error.syn] Deprecate std::errc constants related to UNIX STREAMS Yes
3598(i) C++23 [syserr.errcat.objects] system_category().default_error_condition(0) is underspecified Yes
3515(i) C++23 19.6.2 [stacktrace.syn] §[stacktrace.basic.nonmem]: operator<< should be less templatized Yes 2
3552(i) C++23 20.2.2 [memory.syn] Parallel specialized memory algorithms should require forward iterators Yes
3814(i) C++23 20.2.2 [memory.syn] Add freestanding items requested by NB comments Yes
3545(i) C++23 20.2.3 [pointer.traits] std::pointer_traits should be SFINAE-friendly Yes 2
3525(i) C++23 [allocator.uses.construction] uses_allocator_construction_args fails to handle types convertible to pair Yes 3
3526(i) C++23 [allocator.uses.construction] Return types of uses_allocator_construction_args unspecified Yes 3
3527(i) C++23 [allocator.uses.construction] uses_allocator_construction_args handles rvalue pairs of rvalue references incorrectly Yes
3677(i) C++23 [allocator.uses.construction] Is a cv-qualified pair specially handled in uses-allocator construction? Yes 2
3821(i) C++23 [allocator.uses.construction] uses_allocator_construction_args should have overload for pair-like Yes 2
3170(i) C++23 20.2.10 [default.allocator] is_always_equal added to std::allocator makes the standard library treat derived types as always equal Yes 2
3632(i) C++23 [unique.ptr.single.ctor] unique_ptr "Mandates: This constructor is not selected by class template argument deduction" Yes
3455(i) C++23 [unique.ptr.single.asgn] Incorrect Postconditions on unique_ptr move assignment Yes 0
2762(i) C++23 [unique.ptr.single.observers] unique_ptr operator*() should be noexcept Yes 3
3426(i) C++23 [unique.ptr.special] operator<=>(const unique_ptr<T, D>&, nullptr_t) can't get no satisfaction Yes 0
3548(i) C++23 [util.smartptr.shared.const] shared_ptr construction from unique_ptr should move (not copy) the deleter Yes
3427(i) C++23 [util.smartptr.shared.cmp] operator<=>(const shared_ptr<T>&, nullptr_t) definition ill-formed Yes 0
3195(i) C++23 [util.smartptr.weak.const] What is the stored pointer value of an empty weak_ptr? Yes 2
3734(i) C++23 [out.ptr.t] Inconsistency in inout_ptr and out_ptr for empty case Yes 2
3594(i) C++23 [inout.ptr.t] inout_ptr — inconsistent release() in destructor Yes 1
3471(i) C++23 20.4 [mem.res] polymorphic_allocator::allocate does not satisfy Cpp17Allocator requirements Yes 3
3036(i) C++23 20.4.3 [mem.poly.allocator.class] polymorphic_allocator::destroy is extraneous Yes 3
3683(i) C++23 20.4.3 [mem.poly.allocator.class] operator== for polymorphic_allocator cannot deduce template argument in common cases Yes
3143(i) C++23 20.4.6 [mem.res.monotonic.buffer] monotonic_buffer_resource growth policy is unclear Yes 2
3120(i) C++23 [mem.res.monotonic.buffer.mem] Unclear behavior of monotonic_buffer_resource::release() Yes 2
3819(i) C++23 [meta.unary.prop] reference_meows_from_temporary should not use is_meowible Yes
3823(i) C++23 [meta.unary.prop] Unnecessary precondition for is_aggregate Yes
3152(i) C++23 [meta.trans.other] common_type and common_reference have flaws in common Yes 3
3757(i) C++23 22.2.4 [forward] What's the effect of std::forward_like<void>(x)? Yes
3865(i) C++23 22.3.3 [pairs.spec] Sorting a range of pairs Yes 2
3121(i) C++23 [tuple.cnstr] tuple constructor constraints for UTypes&&... overloads Yes 2
3211(i) C++23 [tuple.cnstr] std::tuple<> should be trivially constructible Yes 3
3528(i) C++23 22.4.6 [tuple.apply] make_from_tuple can perform (the equivalent of) a C-style cast Yes 3
3709(i) C++23 [optional.optional.general] LWG-3703 was underly ambitious Yes
3566(i) C++23 22.5.8 [optional.comp.with.t] Constraint recursion for operator<=>(optional<T>, U) Yes
3746(i) C++23 22.5.8 [optional.comp.with.t] optional's spaceship with U with a type derived from optional causes infinite constraint meta-recursion Yes
3585(i) C++23 [variant.assign] Variant converting assignment with immovable alternative Yes
3754(i) C++23 [expected.object.general] Class template expected synopsis contains declarations that do not match the detailed description Yes
3836(i) C++23 [expected.object.cons] std::expected<bool, E1> conversion constructor expected(const expected<U, G>&) should take precedence over expected(U&&) with operator bool Yes 1
3843(i) C++23 [expected.object.obs] std::expected<T,E>::value() & assumes E is copy constructible Yes
3866(i) C++23 [expected.object.monadic] Bad Mandates for expected::transform_error overloads Yes
3877(i) C++23 [expected.object.monadic] Incorrect constraints on const-qualified monadic overloads for std::expected Yes
3703(i) C++23 [expected.void.general] Missing requirements for expected<T, E> requires is_void<T> Yes 2
3687(i) C++23 [expected.void.assign] expected<cv void, E> move constructor should move Yes
3655(i) C++23 22.10.4 [func.require] The INVOKE operation and union types Yes 3
3764(i) C++23 [refwrap.invoke] reference_wrapper::operator() should propagate noexcept Yes
3146(i) C++23 [refwrap.helpers] Excessive unwrapping in std::ref/cref Yes 3
3530(i) C++23 [comparisons.three.way] BUILTIN-PTR-MEOW should not opt the type out of syntactic checks Yes
3824(i) C++23 [func.bind.place] Number of bind placeholders is underspecified Yes
2774(i) C++23 [func.wrap.func.con] std::function construction vs assignment Yes 3
3617(i) C++23 [func.wrap.func.con] function/packaged_task deduction guides and deducing this Yes 2
3612(i) C++23 [format.string.std] Inconsistent pointer alignment in std::format Yes
3648(i) C++23 [format.string.std] format should not print bool with 'c' Yes
3720(i) C++23 [format.string.std] Restrict the valid types of arg-id for width and precision in std-format-spec Yes 2
3721(i) C++23 [format.string.std] Allow an arg-id with a value of zero for width in std-format-spec Yes 3
3539(i) C++23 22.14.5 [format.functions] format_to must not copy models of output_iterator<const charT&> Yes
3619(i) C++23 22.14.5 [format.functions] Specification of vformat_to contains ill-formed formatted_size calls Yes
3462(i) C++23 [formatter.requirements] §[formatter.requirements]: Formatter requirements forbid use of fc.arg() Yes 3
3636(i) C++23 [formatter.requirements] formatter<T>::format should be const-qualified Yes 1
3701(i) C++23 [format.formatter.spec] Make formatter<remove_cvref_t<const charT[N]>, charT> requirement explicit Yes
3833(i) C++23 [format.formatter.spec] Remove specialization template<size_t N> struct formatter<const charT[N], charT> Yes 2
3825(i) C++23 [format.parse.ctx] Missing compile-time argument id check in basic_format_parse_context::next_arg_id Yes
3567(i) C++23 [format.context] Formatting move-only iterators take two Yes
3654(i) C++23 [format.context] basic_format_context::arg(size_t) should be noexcept Yes
3839(i) C++23 [format.range.formatter] range_formatter's set_separator, set_brackets, and underlying functions should be noexcept Yes
3540(i) C++23 [format.arg] §[format.arg] There should be no const in basic_format_arg(const T* p) Yes
3542(i) C++23 [format.arg] basic_format_arg mis-handles basic_string_view with custom traits Yes
3631(i) C++23 [format.arg] basic_format_arg(T&&) should use remove_cvref_t<T> throughout Yes 3
3544(i) C++23 [format.arg.store] format-arg-store::args is unintentionally not exposition-only Yes 3
3473(i) C++23 [format.args] Normative encouragement in non-normative note Yes 0
3810(i) C++23 [format.args] CTAD for std::basic_format_args Yes 3
3656(i) C++23 22.15.5 [bit.pow.two] Inconsistent bit operations returning a count Yes 3
3085(i) C++23 23.2.2 [char.traits.require] char_traits::copy precondition too weak Yes 2
3518(i) C++23 23.2.2 [char.traits.require] Exception requirements on char trait operations unclear Yes
3573(i) C++23 [string.view.cons] Missing Throws element for basic_string_view(It begin, End end) Yes
3581(i) C++23 [string.view.cons] The range constructor makes basic_string_view not trivially move constructible Yes
3857(i) C++23 [string.view.cons] basic_string_view should allow explicit conversion when only traits vary Yes
3432(i) C++23 23.3.4 [string.view.comparison] Missing requirement for comparison_category Yes 0
3650(i) C++23 [basic.string.general] Are std::basic_string's iterator and const_iterator constexpr iterators? Yes
3645(i) C++23 [string.capacity] resize_and_overwrite is overspecified to call its callback with lvalues Yes 2
3705(i) C++23 23.4.6 [basic.string.hash] Hashability shouldn't depend on basic_string's allocator Yes
3028(i) C++23 24.2.2 [container.requirements.general] Container requirements tables should distinguish const and non-const variables Yes 3
3732(i) C++23 24.2.4 [sequence.reqmts] prepend_range and append_range can't be amortized constant time Yes
3742(i) C++23 24.2.4 [sequence.reqmts] deque::prepend_range needs to permute Yes 2
2743(i) C++23 [container.node.overview] p0083r3 node_handle private members missing "exposition only" comment Yes 3
3622(i) C++23 [unord.req.general] Misspecified transitivity of equivalence in §[unord.req.general] Yes 2
3817(i) C++23 [forward.list.modifiers] Missing preconditions on forward_list modifiers Yes
3088(i) C++23 [forward.list.ops] forward_list::merge behavior unclear when passed *this Yes 3
2997(i) C++23 [list.ops] LWG 491 and the specification of {forward_,}list::unique Yes 3
3778(i) C++23 [vector.bool.pspc] vector<bool> missing exception specifications Yes
3704(i) C++23 [set.overview] LWG 2059 added overloads that might be ill-formed for sets Yes
3781(i) C++23 24.6.1 [container.adaptors.general] The exposition-only alias templates cont-key-type and cont-mapped-type should be removed Yes
3774(i) C++23 24.6.5 [flat.set.syn] <flat_set> should include <compare> Yes
3506(i) C++23 24.6.7 [priority.queue] Missing allocator-extended constructors for priority_queue Yes 3
3522(i) C++23 24.6.7 [priority.queue] Missing requirement on InputIterator template parameter for priority_queue constructors Yes
3529(i) C++23 24.6.7 [priority.queue] priority_queue(first, last) should construct c with (first, last) Yes
3723(i) C++23 [priqueue.members] priority_queue::push_range needs to append_range Yes 2
3803(i) C++23 24.6.9 [flat.map] flat_foo constructors taking KeyContainer lack KeyCompare parameter Yes 1
3816(i) C++23 [flat.map.overview] flat_map and flat_multimap should impose sequence container requirements Yes
3786(i) C++23 [flat.map.defn] Flat maps' deduction guide needs to default Allocator to be useful Yes 2
3879(i) C++23 [flat.set.erasure] erase_if for flat_{,multi}set is incorrectly specified Yes
3881(i) C++23 24.6.13 [container.adaptors.format] Incorrect formatting of container adapters backed by std::string Yes
3876(i) C++23 [mdspan.layout] Default constructor of std::layout_XX::mapping misses precondition Yes
3736(i) C++23 25.2 [iterator.synopsis] move_iterator missing disable_sized_sentinel_for specialization Yes
3765(i) C++23 25.2 [iterator.synopsis] const_sentinel should be constrained Yes
3862(i) C++23 25.2 [iterator.synopsis] basic_const_iterator's common_type specialization is underconstrained Yes
3446(i) C++23 [readable.traits] indirectly_readable_traits ambiguity for types with both value_type and element_type Yes 2
3541(i) C++23 [readable.traits] indirectly_readable_traits should be SFINAE-friendly for all types Yes
3420(i) C++23 [iterator.traits] cpp17-iterator should check that the type looks like an iterator first Yes 0
3798(i) C++23 [iterator.traits] Rvalue reference and iterator_category Yes
3467(i) C++23 [iterator.concept.winc] bool can't be an integer-like type Yes 0
3607(i) C++23 [iterator.concept.contiguous] contiguous_iterator should not be allowed to have custom iter_move and iter_swap behavior Yes
3236(i) C++23 [random.access.iterators] Random access iterator requirements lack limiting relational operators domain to comparing those from the same range Yes 3
3306(i) C++23 [range.iter.op.advance] ranges::advance violates its preconditions Yes 2
3453(i) C++23 [range.iter.op.advance] Generic code cannot call ranges::advance(i, s) Yes 2
3392(i) C++23 [range.iter.op.distance] ranges::distance() cannot be used on a move-only iterator with a sized sentinel Yes 3
3664(i) C++23 [range.iter.op.distance] LWG 3392 broke std::ranges::distance(a, a+3) Yes 2
3769(i) C++23 25.5.3 [const.iterators] basic_const_iterator::operator== causes infinite constraint recursion Yes 1
3853(i) C++23 25.5.3 [const.iterators] basic_const_iterator<volatile int*>::operator-> is ill-formed Yes
3872(i) C++23 25.5.3 [const.iterators] basic_const_iterator should have custom iter_move Yes 3
3391(i) C++23 25.5.4 [move.iterators] Problems with counted_iterator/move_iterator::base() const & Yes 2
3593(i) C++23 25.5.4 [move.iterators] Several iterators' base() const & and lazy_split_view::outer-iterator::value_type::end() missing noexcept Yes
3265(i) C++23 [move.iter.cons] move_iterator's conversions are more broken after P1207 Yes 2
3435(i) C++23 [move.iter.cons] three_way_comparable_with<reverse_iterator<int*>, reverse_iterator<const int*>> Yes 2
3293(i) C++23 [move.iter.nonmember] move_iterator operator+() has incorrect constraints Yes 3
3574(i) C++23 [common.iterator] common_iterator should be completely constexpr-able Yes 3
3660(i) C++23 [common.iter.types] iterator_traits<common_iterator>::pointer should conform to §[iterator.traits] Yes
3595(i) C++23 [common.iter.access] Exposition-only classes proxy and postfix-proxy for common_iterator should be fully constexpr Yes
3672(i) C++23 [common.iter.access] common_iterator::operator->() should return by value Yes
3546(i) C++23 [common.iter.nav] common_iterator's postfix-proxy is not quite right Yes
3601(i) C++23 [common.iter.nav] common_iterator's postfix-proxy needs indirectly_readable Yes
3472(i) C++23 25.5.7 [iterators.counted] counted_iterator is missing preconditions Yes
3543(i) C++23 [counted.iterator] Definition of when counted_iterators refer to the same sequence isn't quite right Yes
3643(i) C++23 [counted.iter.nav] Missing constexpr in std::counted_iterator Yes
3600(i) C++23 [istream.iterator.cons] Making istream_iterator copy constructor trivial is an ABI break Yes 3
3770(i) C++23 26.2 [ranges.syn] const_sentinel_t is missing Yes 3
3860(i) C++23 26.2 [ranges.syn] range_common_reference_t is missing Yes
3403(i) C++23 26.3.11 [range.prim.ssize] Domain of ranges::ssize(E) doesn't match ranges::size(E) Yes 2
3361(i) C++23 26.4.2 [range.range] safe_range<SomeRange&> case Yes 3
3559(i) C++23 26.4.3 [range.sized] Semantic requirements of sized_range is circular Yes
3481(i) C++23 26.4.5 [range.refinements] viewable_range mishandles lvalue move-only views Yes 2
3549(i) C++23 26.5.3 [view.interface] view_interface is overspecified to derive from view_base Yes 2
3646(i) C++23 [view.interface.general] std::ranges::view_interface::size returns a signed type Yes 3
3715(i) C++23 [view.interface.general] view_interface::empty is overconstrained Yes
3766(i) C++23 [view.interface.general] view_interface::cbegin is underconstrained Yes 2
3404(i) C++23 26.5.4 [range.subrange] Finish removing subrange's conversions from pair-like Yes 0
3470(i) C++23 26.5.4 [range.subrange] convertible-to-non-slicing seems to reject valid case Yes 3
3589(i) C++23 26.5.4 [range.subrange] The const lvalue reference overload of get for subrange does not constrain I to be copyable when N == 0 Yes 3
3433(i) C++23 [range.subrange.access] subrange::advance(n) has UB when n < 0 Yes 2
3551(i) C++23 26.5.5 [range.dangling] borrowed_{iterator,subrange}_t are overspecified Yes
3733(i) C++23 [range.utility.conv.to] ranges::to misuses cpp17-input-iterator Yes 2
3743(i) C++23 [range.utility.conv.to] ranges::to's reserve may be ill-formed Yes
3785(i) C++23 [range.utility.conv.to] ranges::to is over-constrained on the destination type being a range Yes
3847(i) C++23 [range.utility.conv.to] ranges::to can still return views Yes 2
3428(i) C++23 [range.single.view] single_view's in place constructor should be explicit Yes 0
3523(i) C++23 [range.iota.view] iota_view::sentinel is not always iota_view's sentinel Yes
3597(i) C++23 [range.iota.view] Unsigned integer types don't model advanceable Yes 3
3610(i) C++23 [range.iota.view] iota_view::size sometimes rejects integer-class types Yes
3580(i) C++23 [range.iota.iterator] iota_view's iterator's binary operator+ should be improved Yes
3670(i) C++23 [range.iota.iterator] Cpp17InputIterators don't have integer-class difference types Yes
3875(i) C++23 26.6.5 [range.repeat] std::ranges::repeat_view<T, IntegerClass>::iterator may be ill-formed Yes
3772(i) C++23 [range.repeat.view] repeat_view's piecewise constructor is missing Postconditions Yes 2
3796(i) C++23 [range.repeat.view] movable-box as member should use default-initialization instead of copy-initialization Yes
3568(i) C++23 [range.istream.view] basic_istream_view needs to initialize value_ Yes
3477(i) C++23 26.7.3 [range.move.wrap] Simplify constraints for semiregular-box Yes 0
3572(i) C++23 26.7.3 [range.move.wrap] copyable-box should be fully constexpr Yes
3533(i) C++23 [range.filter.iterator] Make base() const & consistent across iterator wrappers that supports input_iterators Yes
3483(i) C++23 [range.transform.iterator] transform_view::iterator's difference is overconstrained Yes 0
3520(i) C++23 [range.transform.iterator] iter_move and iter_swap are inconsistent for transform_view::iterator Yes 2
3555(i) C++23 [range.transform.iterator] {transform,elements}_view::iterator::iterator_concept should consider const-qualification of the underlying range Yes
3564(i) C++23 [range.transform.iterator] transform_view::iterator<true>::value_type and iterator_category should use const F& Yes 2
3618(i) C++23 [range.transform.iterator] Unnecessary iter_move for transform_view::iterator Yes
3448(i) C++23 [range.transform.sentinel] transform_view's sentinel<false> not comparable with iterator<true> Yes 1
3407(i) C++23 [range.take.overview] Some problems with the wording changes of P1739R4 Yes 2
3447(i) C++23 [range.take.view] Deduction guides for take_view and drop_view have different constraints Yes 0
3738(i) C++23 [range.take.view] Missing preconditions for take_view constructor Yes
3449(i) C++23 [range.take.sentinel] take_view and take_while_view's sentinel<false> not comparable with their const iterator Yes 1
3737(i) C++23 [range.take.sentinel] take_view::sentinel should provide operator- Yes 3
3450(i) C++23 [range.take.while.view] The const overloads of take_while_view::begin/end are underconstrained Yes 0
3708(i) C++23 [range.take.while.sentinel] take_while_view::sentinel's conversion constructor should move Yes
3482(i) C++23 [range.drop.view] drop_view's const begin should additionally require sized_range Yes 0
3490(i) C++23 [range.drop.while.view] ranges::drop_while_view::begin() is missing a precondition Yes 0
3474(i) C++23 26.7.14 [range.join] Nesting join_views is broken because of CTAD Yes
3500(i) C++23 [range.join.iterator] join_view::iterator::operator->() is bogus Yes 0
3517(i) C++23 [range.join.iterator] join_view::iterator's iter_swap is underconstrained Yes
3535(i) C++23 [range.join.iterator] join_view::iterator::iterator_category and ::iterator_concept lie Yes 2
3569(i) C++23 [range.join.iterator] join_view fails to support ranges of ranges with non-default_initializable iterators Yes 3
3592(i) C++23 [range.lazy.split.view] lazy_split_view needs to check the simpleness of Pattern Yes
3505(i) C++23 [range.lazy.split.outer] split_view::outer-iterator::operator++ misspecified Yes 2
3553(i) C++23 [range.lazy.split.outer.value] Useless constraint in split_view::outer-iterator::value_type::begin() Yes
3532(i) C++23 [range.lazy.split.inner] split_view<V, P>::inner-iterator<true>::operator++(int) should depend on Base Yes
3591(i) C++23 [range.lazy.split.inner] lazy_split_view<input_view>::inner-iterator::base() && invalidates outer iterators Yes
3590(i) C++23 [range.split.view] split_view::base() const & is overconstrained Yes
3405(i) C++23 [range.common.view] common_view's converting constructor is bad, too Yes 0
3717(i) C++23 [range.common.view] common_view::end should improve random_access_range case Yes 3
3494(i) C++23 26.7.21 [range.reverse] Allow ranges to be conditionally borrowed Yes
3811(i) C++23 [range.as.const.overview] views::as_const on ref_view<T> should return ref_view<const T> Yes
3850(i) C++23 [range.as.const.overview] views::as_const on empty_view<T> should return empty_view<const T> Yes
3563(i) C++23 [range.elements.overview] keys_view example is broken Yes 3
3406(i) C++23 [range.elements.view] elements_view::begin() and elements_view::end() have incompatible constraints Yes 1
3492(i) C++23 [range.elements.iterator] Minimal improvements to elements_view::iterator Yes 0
3502(i) C++23 [range.elements.iterator] elements_view should not be allowed to return dangling references Yes 2
3755(i) C++23 [range.zip.view] tuple-for-each can call user-defined operator, Yes
3692(i) C++23 [range.zip.iterator] zip_view::iterator's operator<=> is overconstrained Yes
3773(i) C++23 [range.zip.transform.overview] views::zip_transform still requires F to be copy_constructible when empty pack Yes
3702(i) C++23 [range.zip.transform.iterator] Should zip_transform_view::iterator remove operator<? Yes
3848(i) C++23 [range.adjacent.view] adjacent_view, adjacent_transform_view and slide_view missing base accessor Yes
3710(i) C++23 [range.chunk.view.input] The end of chunk_view for input ranges can be const Yes
3712(i) C++23 [range.chunk.view.input] chunk_view and slide_view should not be default_initializable Yes
3707(i) C++23 [range.chunk.outer.value] chunk_view::outer-iterator::value_type::size should return unsigned type Yes
3851(i) C++23 [range.chunk.inner.iter] chunk_view::inner-iterator missing custom iter_move and iter_swap Yes
3880(i) C++23 [range.chunk.fwd.iter] Clarify operator+= complexity for {chunk,stride}_view::iterator Yes
3711(i) C++23 [range.slide.view] Missing preconditions for slide_view constructor Yes
3760(i) C++23 26.7.33 [range.cartesian] cartesian_product_view::iterator's parent_ is never valid Yes
3761(i) C++23 [range.cartesian.iterator] cartesian_product_view::iterator::operator- should pass by reference Yes
3801(i) C++23 [range.cartesian.iterator] cartesian_product_view::iterator::distance-from ignores the size of last underlying range Yes
3820(i) C++23 [range.cartesian.iterator] cartesian_product_view::iterator::prev is not quite right Yes
3849(i) C++23 [range.cartesian.iterator] cartesian_product_view::iterator's default constructor is overconstrained Yes
3826(i) C++23 26.8.5 [coro.generator.promise] Redundant specification [for overload of yield_value] Yes
3762(i) C++23 26.8.6 [coro.generator.iterator] generator::iterator::operator== should pass by reference Yes
3419(i) C++23 27.2 [algorithms.requirements] §[algorithms.requirements]/15 doesn't reserve as many rights as it intends to Yes 0
3560(i) C++23 27.6.13 [alg.equal] ranges::equal and ranges::is_permutation should short-circuit for sized_ranges Yes
3759(i) C++23 27.7.11 [alg.rotate] ranges::rotate_copy should use std::move Yes
3713(i) C++23 27.8.1 [alg.sorting.general] Sorted with respect to comparator (only) Yes
3032(i) C++23 27.8.8 [alg.heap.operations] ValueSwappable requirement missing for push_heap and make_heap Yes 3
3410(i) C++23 27.8.12 [alg.three.way] lexicographical_compare_three_way is overspecified Yes 3
3870(i) C++23 27.11.1 [specialized.algorithms.general] Remove voidify Yes
3747(i) C++23 27.11.5 [uninitialized.copy] ranges::uninitialized_copy_n, ranges::uninitialized_move_n, and ranges::destroy_n should use std::move Yes
3521(i) C++23 27.13 [alg.c.library] Overly strict requirements on qsort and bsearch Yes
3519(i) C++23 28.5.4 [rand.eng] Incomplete synopses for <random> classes Yes 3
3561(i) C++23 [rand.adapt.disc] Issue with internal counter in discard_block_engine Yes
3422(i) C++23 [rand.util.seedseq] Issues of seed_seq's constructors Yes 3
3790(i) C++23 28.7.1 [cmath.syn] P1467 accidentally changed nexttoward's signature Yes 1
3123(i) C++23 29.5 [time.duration] duration constructor from representation shouldn't be effectively non-throwing Yes 3
3536(i) C++23 29.5.11 [time.duration.io] Should chrono::from_stream() assign zero to duration for failure? Yes
3842(i) C++23 29.12 [time.format] Unclear wording for precision in chrono-format-spec Yes
3554(i) C++23 29.13 [time.parse] chrono::parse needs const charT* and basic_string_view<charT> overloads Yes 2
2295(i) C++23 [locale.cons] Locale name when the provided Facet is a nullptr Yes 3
2381(i) C++23 [facet.num.get.virtuals] Inconsistency in parsing floating point numbers Yes 2
3878(i) C++23 31.4.2 [iostream.objects.overview] import std; should guarantee initialization of standard iostreams objects Yes
3434(i) C++23 [ios.base.cons] ios_base never reclaims memory for iarray and parray Yes
3118(i) C++23 [fpos.operations] fpos equality comparison unspecified Yes 4
3464(i) C++23 [istream.unformatted] istream::gcount() can overflow Yes 0
3571(i) C++23 [ostream.manip] flush_emit should set badbit if the emit call fails Yes
3430(i) C++23 31.10.1 [fstream.syn] std::fstream & co. should be constructible from string_view Yes 3
3498(i) C++23 [syncstream.syncbuf.overview] Inconsistent noexcept-specifiers for basic_syncbuf Yes 3
3616(i) C++23 [syncstream.syncbuf.special] LWG 3498 seems to miss the non-member swap for basic_syncbuf Yes
3867(i) C++23 [syncstream.osyncstream.overview] Should std::basic_osyncstream's move assignment operator be noexcept? Yes
3570(i) C++23 [syncstream.osyncstream.members] basic_osyncstream::emit should be an unformatted output function Yes
3657(i) C++23 31.12.6 [fs.class.path] std::hash<std::filesystem::path> is not enabled Yes
3171(i) C++23 31.12.10 [fs.class.directory.entry] LWG 2989 breaks directory_entry stream insertion Yes 2
3480(i) C++23 31.12.11 [fs.class.directory.iterator] directory_iterator and recursive_directory_iterator are not C++20 ranges Yes 3
3719(i) C++23 [fs.class.directory.iterator.general] Directory iterators should be usable with default sentinel Yes
3822(i) C++23 [fs.op.weakly.canonical] Avoiding normalization in filesystem::weakly_canonical Yes
3834(i) C++23 31.13.2 [cinttypes.syn] Missing constexpr for std::intmax_t math functions in <cinttypes> Yes
3204(i) C++23 32.8 [re.submatch] sub_match::swap only swaps the base class Yes 3
2195(i) C++23 32.9 [re.results] Missing constructors for match_results Yes 3
2191(i) C++23 32.9.2 [re.results.const] Incorrect specification of match_results(match_results&&) Yes 4
3476(i) C++23 [thread.thread.constr] thread and jthread constructors require that the parameters be move-constructible but never move construct the parameters Yes 0
3788(i) C++23 [thread.jthread.cons] jthread::operator=(jthread&&) postconditions are unimplementable under self-assignment Yes 3
3745(i) C++23 33.5.2 [atomics.syn] std::atomic_wait and its friends lack noexcept Yes
3249(i) C++23 33.5.5 [atomics.lockfree] There are no 'pointers' in §[atomics.lockfree] Yes 4
3661(i) C++23 [util.smartptr.atomic.shared] constinit atomic<shared_ptr<T>> a(nullptr); should work Yes
3659(i) C++23 33.5.10 [atomics.flag] Consider ATOMIC_FLAG_INIT undeprecation Yes 3
3671(i) C++23 33.5.12 [stdatomic.h.syn] atomic_fetch_xor missing from stdatomic.h Yes
2731(i) C++23 [thread.lock.guard] Existence of lock_guard<MutexTypes...>::mutex_type typedef unclear Yes 3
3425(i) C++23 33.7.5 [thread.condition.condvarany] condition_variable_any fails to constrain its Lock parameters Yes 0
3466(i) C++23 33.10.6 [futures.promise] Specify the requirements for promise/future/shared_future consistently Yes 3
3795(i) C++23 33.10.7 [futures.unique.future] Self-move-assignment of std::future and std::shared_future have unimplementable postconditions Yes 3
3117(i) C++23 33.10.10 [futures.task] Missing packaged_task deduction guides Yes 3
2697(i) C++23 99 [concurr.ts::futures.unique_future] [concurr.ts] Behavior of future/shared_future unwrapping constructor when given an invalid future Yes 2
3136(i) C++23 [fund.ts.v3::propagate_const.class_type_requirements] [fund.ts.v3] LFTSv3 awkward wording in propagate_const requirements Yes 3
3413(i) C++23 [fund.ts.v3::propagate_const.modifiers] [fund.ts.v3] propagate_const's swap's noexcept specification needs to be constrained and use a trait Yes 0
2960(i) C++23 3.4 [fund.ts.v3::meta] [fund.ts.v3] nonesuch is insufficiently useless Yes 2
3411(i) C++23 5.4 [fund.ts.v3::memory.resource.syn] [fund.ts.v3] Contradictory namespace rules in the Library Fundamentals TS Yes 3
3771(i) C++23 99 [fund.ts.v3::func.wrap.func.overview] [fund.ts.v3] remove binders typedefs from function Yes
3414(i) C++23 13.7 [networking.ts::async.exec.ctx] [networking.ts] service_already_exists has no usable constructors Yes 0
3010(i) C++23 13.11.1 [networking.ts::async.uses.executor.trait] [networking.ts] uses_executor says "if a type T::executor_type exists" Yes 0
3020(i) C++23 16.2 [networking.ts::buffer.reqmts] [networking.ts] Remove spurious nested value_type buffer sequence requirement Yes 0
2779(i) C++23 16.2.1 [networking.ts::buffer.reqmts.mutablebuffersequence] [networking.ts] Relax requirements on buffer sequence iterators Yes
3071(i) C++23 17.9 [networking.ts::buffer.read.until] [networking.ts] read_until still refers to "input sequence" Yes 0
3002(i) C++23 18.9.4 [networking.ts::socket.acceptor.ops] [networking.ts] basic_socket_acceptor::is_open() isn't noexcept Yes 0
3443(i) C++23 19.2.1 [networking.ts::socket.iostream.cons] [networking.ts] net::basic_socket_iostream should use addressof Yes 0

C++20 (282 issues)

Issue Status Section Title Proposed Resolution Priority Duplicates
3119(i) C++20 3.41 [defns.prog.def.spec] Program-definedness of closure types Yes 2
3285(i) C++20 [customization.point.object] The type of a customization point object shall satisfy semiregular Yes 0
3148(i) C++20 [compliance] <concepts> should be freestanding Yes 0
2593(i) C++20 [allocator.requirements] Moved-from state of Allocators Yes 4
3315(i) C++20 [allocator.requirements] Correct Allocator Default Behavior Yes 0
2954(i) C++20 16.4.5 [constraints] Specialization of the convenience variable templates should be prohibited Yes
2139(i) C++20 [namespace.std] What is a user-defined type? Yes 4
3132(i) C++20 [macro.names] Library needs to ban macros named expects or ensures Yes 0
3147(i) C++20 [macro.names] Definitions of "likely" and "unlikely" are likely to cause problems Yes 0
2950(i) C++20 17.2.5 [support.types.byteops] std::byte operations are misspecified Yes 1
3137(i) C++20 17.3.1 [support.limits.general] Header for __cpp_lib_to_chars Yes 0
3122(i) C++20 17.3.1 [support.limits.general] __cpp_lib_chrono_udls was accidentally dropped Yes 0
3256(i) C++20 17.3.1 [support.limits.general] Feature testing macro for constexpr algorithms Yes 0
3257(i) C++20 17.3.1 [support.limits.general] Missing feature testing macro update from P0858 Yes 0
3274(i) C++20 17.3.1 [support.limits.general] Missing feature test macro for <span> Yes 0
3348(i) C++20 17.3.2 [version.syn] __cpp_lib_unwrap_ref in wrong header Yes 2
3349(i) C++20 17.3.2 [version.syn] Missing __cpp_lib_constexpr_complex for P0415R1 Yes 0
3356(i) C++20 17.3.2 [version.syn] __cpp_lib_nothrow_convertible should be __cpp_lib_is_nothrow_convertible Yes 0
3393(i) C++20 17.3.2 [version.syn] Missing/incorrect feature test macro for coroutines Yes 0
2859(i) C++20 17.6.5 [ptr.launder] Definition of reachable in [ptr.launder] misses pointer arithmetic from pointer-interconvertible object Yes 2
3396(i) C++20 [support.srcloc.cons] Clarify point of reference for source_location::current() (DE 169) Yes 2
3360(i) C++20 17.11.4 [cmp.concept] three_way_comparable_with is inconsistent with similar concepts Yes 0
3324(i) C++20 17.11.6 [cmp.alg] Special-case std::strong/weak/partial_order for pointers Yes 0
3330(i) C++20 17.12.2 [coroutine.syn] Include <compare> from most library headers Yes 0
3182(i) C++20 18.4.2 [concept.same] Specification of Same could be clearer Yes 0
3194(i) C++20 18.4.4 [concept.convertible] ConvertibleTo prose does not match code Yes 1
3153(i) C++20 18.4.6 [concept.common] Common and common_type have too little in common Yes 0
3154(i) C++20 18.4.6 [concept.common] Common and CommonReference have a common defect Yes 0
3175(i) C++20 18.4.9 [concept.swappable] The CommonReference requirement of concept SwappableWith is not satisfied in the example Yes 1
3149(i) C++20 18.4.12 [concept.default.init] DefaultConstructible should require default initialization Yes 2
3338(i) C++20 18.4.12 [concept.default.init] Rename default_constructible to default_initializable Yes 0
3329(i) C++20 18.5.5 [concept.totallyordered] totally_ordered_with both directly and indirectly requires common_reference_with Yes 0
3331(i) C++20 18.5.5 [concept.totallyordered] Define totally_ordered/_with in terms of partially-ordered-with Yes 0
3141(i) C++20 18.6 [concepts.object] CopyConstructible doesn't preserve source values Yes 2
3112(i) C++20 [syserr.syserr.members] system_error and filesystem_error constructors taking a string may not be able to meet their postconditions Yes 0
3303(i) C++20 20.2.2 [memory.syn] Bad "constexpr" marker for destroy/destroy_n Yes 0
3374(i) C++20 20.2.4 [pointer.conversion] P0653 + P1006 should have made the other std::to_address overload constexpr Yes 0
3185(i) C++20 [allocator.uses.construction] Uses-allocator construction functions missing constexpr and noexcept Yes 0
3187(i) C++20 [allocator.uses.construction] P0591R4 reverted DR 2586 fixes to scoped_allocator_adaptor::construct() Yes
3321(i) C++20 [allocator.uses.construction] uninitialized_construct_using_allocator should use construct_at Yes 0
3035(i) C++20 20.2.10 [default.allocator] std::allocator's constructors should be constexpr Yes 0
3307(i) C++20 20.2.10 [default.allocator] std::allocator<void>().allocate(n) Yes 0
3190(i) C++20 [allocator.members] std::allocator::allocate sometimes returns too little storage Yes 3
2948(i) C++20 20.3.1 [unique.ptr] unique_ptr does not define operator<< for stream output Yes 0
2944(i) C++20 [unique.ptr.single.ctor] LWG 2905 accidentally removed requirement that construction of the deleter doesn't throw an exception Yes 0
2996(i) C++20 [util.smartptr.shared] Missing rvalue overloads for shared_ptr operations Yes
3018(i) C++20 [util.smartptr.shared] shared_ptr of function type Yes 3
3233(i) C++20 [util.smartptr.shared.const] Broken requirements for shared_ptr converting constructors Yes 0
3005(i) C++20 [util.smartptr.shared.create] Destruction order of arrays by make_shared/allocate_shared only recommended? Yes 0
3007(i) C++20 [util.smartptr.shared.create] allocate_shared should rebind allocator to cv-unqualified value_type for construction Yes 0
3008(i) C++20 [util.smartptr.shared.create] make_shared (sub)object destruction semantics are not specified Yes 2
2964(i) C++20 [util.smartptr.shared.cast] Apparently redundant requirement for dynamic_pointer_cast Yes 0
3001(i) C++20 [util.smartptr.weak] weak_ptr::element_type needs remove_extent_t Yes 0
2942(i) C++20 [util.smartptr.weak.obs] LWG 2873's resolution missed weak_ptr::owner_before Yes
2843(i) C++20 [mem.res.private] Unclear behavior of std::pmr::memory_resource::do_allocate() Yes 3
3037(i) C++20 20.4.3 [mem.poly.allocator.class] polymorphic_allocator and incomplete types Yes 2
3304(i) C++20 20.4.3 [mem.poly.allocator.class] Allocate functions of std::polymorphic_allocator should require [[nodiscard]] Yes 3
2969(i) C++20 [mem.poly.allocator.mem] polymorphic_allocator::construct() shouldn't pass resource() Yes 2
2975(i) C++20 [mem.poly.allocator.mem] Missing case for pair construction in scoped and polymorphic allocators Yes 3
3038(i) C++20 [mem.poly.allocator.mem] polymorphic_allocator::allocate should not allow integer overflow to create vulnerabilities Yes 2
3237(i) C++20 [mem.poly.allocator.mem] LWG 3038 and 3190 have inconsistent PRs Yes 2
3310(i) C++20 [mem.poly.allocator.mem] Replace SIZE_MAX with numeric_limits<size_t>::max() Yes 0
2961(i) C++20 20.4.4 [mem.res.global] Bad postcondition for set_default_resource Yes
3000(i) C++20 [mem.res.monotonic.buffer.mem] monotonic_memory_resource::do_is_equal uses dynamic_cast unnecessarily Yes 0
3116(i) C++20 20.5.4 [allocator.adaptor.members] OUTERMOST_ALLOC_TRAITS needs remove_reference_t Yes 0
2972(i) C++20 [meta.unary.prop] What is is_trivially_destructible_v<int>? Yes
3354(i) C++20 [meta.unary.prop] has_strong_structural_equality has a meaningless definition Yes 1
2979(i) C++20 [meta.trans.other] aligned_union should require complete object types Yes 0
3034(i) C++20 [meta.trans.other] P0767R1 breaks previously-standard-layout types Yes 0
3140(i) C++20 [meta.trans.other] COMMON_REF is unimplementable as specified Yes 0
3380(i) C++20 [meta.trans.other] common_type and comparison categories Yes 0
2958(i) C++20 22.3.2 [pairs.pair] Moves improperly defined as deleted Yes 2
3346(i) C++20 22.3.2 [pairs.pair] pair and tuple copy and move constructor have backwards specification Yes 0
3382(i) C++20 22.3.2 [pairs.pair] NTTP for pair and array Yes 2
3347(i) C++20 22.3.3 [pairs.spec] std::pair<T, U> now requires T and U to be less-than-comparable Yes 1
2974(i) C++20 22.3.4 [pair.astuple] Diagnose out of bounds tuple_element/variant_alternative Yes
2899(i) C++20 22.4 [tuple] is_(nothrow_)move_constructible and tuple, optional and unique_ptr Yes 2
3158(i) C++20 [tuple.cnstr] tuple(allocator_arg_t, const Alloc&) should be conditionally explicit Yes 3
3196(i) C++20 22.5.3 [optional.optional] std::optional<T> is ill-formed is T is an array Yes 0
2945(i) C++20 22.5.8 [optional.comp.with.t] Order of template parameters in optional comparisons Yes 2
3024(i) C++20 [variant.ctor] variant's copies must be deleted instead of disabled via SFINAE Yes
2970(i) C++20 22.6.7 [variant.visit] Return type of std::visit misspecified Yes 2
3199(i) C++20 22.9.4 [bitset.operators] istream >> bitset<0> fails Yes
3202(i) C++20 22.10.2 [functional.syn] P0318R1 was supposed to be revised Yes 0
2981(i) C++20 22.10.6 [refwrap] Remove redundant deduction guides from standard library Yes 0
2993(i) C++20 22.10.6 [refwrap] reference_wrapper<T> conversion from T&& Yes 3
3041(i) C++20 [refwrap.const] Unnecessary decay in reference_wrapper Yes 0
3184(i) C++20 22.10.14 [func.bind.partial] Inconsistencies in bind_front wording Yes 0
3238(i) C++20 [func.wrap.func.con] Insufficiently-defined behavior of std::function deduction guides Yes
3266(i) C++20 22.13.1 [charconv.syn] to_chars(bool) should be deleted Yes 0
3373(i) C++20 22.13.1 [charconv.syn] {to,from}_chars_result and format_to_n_result need the "we really mean what we say" wording Yes 0
3080(i) C++20 22.13.3 [charconv.from.chars] Floating point from_chars pattern specification breaks round-tripping Yes 0
3243(i) C++20 22.14.2 [format.string] std::format and negative zeroes Yes 2
3251(i) C++20 22.14.2 [format.string] Are std::format alignment specifiers applied to string arguments? Yes 2
3242(i) C++20 [format.string.std] std::format: missing rules for arg-id in width and precision Yes 1
3248(i) C++20 [format.string.std] std::format #b, #B, #o, #x, and #X presentation types misformat negative numbers Yes 2
3250(i) C++20 [format.string.std] std::format: # (alternate form) for NaN and inf Yes 0
3290(i) C++20 [format.string.std] Are std::format field widths code units, code points, or something else? Yes
3327(i) C++20 [format.string.std] Format alignment specifiers vs. text direction Yes 0
3340(i) C++20 22.14.5 [format.functions] Formatting functions should throw on argument/format string mismatch in §[format.functions] Yes
3372(i) C++20 22.14.5 [format.functions] vformat_to should not try to deduce Out twice Yes 0
3246(i) C++20 [format.arg] What are the constraints on the template parameter of basic_format_arg? Yes 0
3371(i) C++20 [format.arg] visit_format_arg and make_format_args are not hidden friends Yes 0
3040(i) C++20 [string.view.ops] basic_string_view::starts_with Effects are incorrect Yes 0
3075(i) C++20 23.4.3 [basic.string] basic_string needs deduction guides from basic_string_view Yes
2946(i) C++20 [string.cons] LWG 2758's resolution missed further corrections Yes 2
3076(i) C++20 [string.cons] basic_string CTAD ambiguity Yes
3004(i) C++20 [string.capacity] §[string.capacity] and §[vector.capacity] should specify time complexity for capacity() Yes 0
2978(i) C++20 23.4.6 [basic.string.hash] Hash support for pmr::string and friends Yes 0
3352(i) C++20 24.2.2 [container.requirements.general] strong_equality isn't a thing Yes 1
2977(i) C++20 24.2.8 [unord.req] unordered_meow::merge() has incorrect Throws: clause Yes 0
2953(i) C++20 [deque.modifiers] LWG 2853 should apply to deque::erase too Yes 0
3017(i) C++20 [forward.list.ops] list splice functions should use addressof Yes 0
2998(i) C++20 [list.ops] Requirements on function objects passed to {forward_,}list-specific algorithms Yes 0
3087(i) C++20 [list.ops] One final &x in §[list.ops] Yes 3
2164(i) C++20 [vector.modifiers] What are the semantics of vector.emplace(vector.begin(), vector.back())? Yes 2
3077(i) C++20 [vector.modifiers] (push|emplace)_back should invalidate the end iterator Yes 3
3025(i) C++20 [map.overview] Map-like container deduction guides should use pair<Key, T>, not pair<const Key, T> Yes 2
2982(i) C++20 [unord.set.overview] Making size_type consistent in associative container deduction guides Yes 2
2783(i) C++20 [queue.defn] stack::emplace() and queue::emplace() should return decltype(auto) Yes 2
3102(i) C++20 [span.overview] Clarify span iterator and const_iterator behavior Yes 0
3144(i) C++20 [span.overview] span does not have a const_pointer typedef Yes 0
3369(i) C++20 [span.overview] span's deduction-guide for built-in arrays doesn't work Yes 0
3100(i) C++20 [span.cons] Unnecessary and confusing "empty span" wording Yes 0
3101(i) C++20 [span.cons] span's Container constructors need another constraint Yes 1
3198(i) C++20 [span.cons] Bad constraint on std::span::span() Yes
3255(i) C++20 [span.cons] span's array constructor is too strict Yes 2
3358(i) C++20 [span.cons] §[span.cons] is mistaken that to_address can throw Yes 0
3103(i) C++20 [span.sub] Errors in taking subview of span should be ill-formed where possible Yes 3
3320(i) C++20 [span.iterators] span::cbegin/cend methods produce different results than std::[ranges::]cbegin/cend Yes 0
3259(i) C++20 25.3.1 [iterator.requirements.general] The definition of constexpr iterators should be adjusted Yes 0
2952(i) C++20 [iterator.traits] iterator_traits should work for pointers to cv T Yes 0
3247(i) C++20 [iterator.cust.move] ranges::iter_move should perform ADL-only lookup of iter_move Yes 2
3299(i) C++20 [iterator.cust.move] Pointers don't need customized iterator behavior Yes 0
3367(i) C++20 [iterator.concept.winc] Integer-class conversions should not throw Yes 0
3183(i) C++20 [iterator.concept.sizedsentinel] Normative permission to specialize Ranges variable templates Yes 0
3277(i) C++20 [iterator.concept.random.access] Pre-increment on prvalues is not a requirement of weakly_incrementable Yes 0
3284(i) C++20 [iterator.concept.random.access] random_access_iterator semantic constraints accidentally promote difference type using unary negate Yes 0
3390(i) C++20 [move.iter.nonmember] make_move_iterator() cannot be used to construct a move_iterator for a move-only iterator Yes 0
3385(i) C++20 [common.iterator] common_iterator is not sufficiently constrained for non-copyable iterators Yes 0
3389(i) C++20 [counted.iter.const] A move-only iterator still does not have a counted_iterator Yes 0
3009(i) C++20 25.7 [iterator.range] Including <string_view> doesn't provide std::size/empty/data Yes 0
3208(i) C++20 25.7 [iterator.range] Boolean's expression requirements are ordered inconsistently Yes 0
3300(i) C++20 25.7 [iterator.range] Non-array ssize overload is underconstrained Yes 3
3302(i) C++20 26.2 [ranges.syn] Range adaptor objects keys and values are unspecified Yes 1
3335(i) C++20 26.2 [ranges.syn] Resolve C++20 NB comments US 273 and GB 274 Yes 1
3351(i) C++20 26.2 [ranges.syn] ranges::enable_safe_range should not be constrained Yes 0
3379(i) C++20 26.2 [ranges.syn] "safe" in several library names is misleading Yes 1
3398(i) C++20 26.2 [ranges.syn] tuple_element_t is also wrong for const subrange Yes 0
3264(i) C++20 26.4.3 [range.sized] sized_range and ranges::size redundantly use disable_sized_range Yes 1
3326(i) C++20 26.4.4 [range.view] enable_view has false positives Yes 0
3375(i) C++20 26.4.5 [range.refinements] decay in viewable_range should be remove_cvref Yes 0
3381(i) C++20 26.4.5 [range.refinements] begin and data must agree for contiguous_range Yes 0
3281(i) C++20 26.5.4 [range.subrange] Conversion from pair-like types to subrange is a silent semantic promotion Yes 1
3282(i) C++20 26.5.4 [range.subrange] subrange converting constructor should disallow derived to base conversions Yes 1
3179(i) C++20 [range.subrange.ctor] subrange should always model Range Yes 0
3292(i) C++20 [range.iota.view] iota_view is under-constrained Yes
3291(i) C++20 [range.iota.iterator] iota_view::iterator has the wrong iterator_category Yes 0
3388(i) C++20 [range.iota.iterator] view iterator types have ill-formed <=> operators Yes 0
3397(i) C++20 [range.istream.iterator] ranges::basic_istream_view::iterator should not provide iterator_category Yes 1
3173(i) C++20 [range.ref.view] Enable CTAD for ref-view Yes 0
3280(i) C++20 [range.filter.view] View converting constructors can cause constraint recursion and are unneeded Yes 1
3325(i) C++20 [range.transform.view] Constrain return type of transformation function for transform_view Yes 0
3301(i) C++20 [range.transform.iterator] transform_view::iterator has incorrect iterator_category Yes 1
3384(i) C++20 [range.transform.sentinel] transform_view::sentinel has an incorrect operator- Yes 0
3286(i) C++20 [range.take.view] ranges::size is not required to be valid after a call to ranges::begin on an input range Yes 0
3364(i) C++20 [range.take.while.view] Initialize data members of ranges and their iterators Yes 0
3363(i) C++20 [range.drop.while.view] drop_while_view should opt-out of sized_range Yes 1
3313(i) C++20 [range.join.iterator] join_view::iterator::operator-- is incorrectly constrained Yes 0
3276(i) C++20 [range.lazy.split.outer.value] Class split_view::outer_iterator::value_type should inherit from view_interface Yes 0
3387(i) C++20 [range.reverse.view] §[range.reverse.view] reverse_view<V> unintentionally requires range<const V> Yes 0
3386(i) C++20 26.7.23 [range.elements] elements_view needs its own sentinel type Yes 1
3323(i) C++20 [range.elements.view] has-tuple-element helper concept needs convertible_to Yes 0
3377(i) C++20 [range.elements.iterator] elements_view::iterator befriends a specialization of itself Yes 0
2932(i) C++20 27.3.3 [algorithms.parallel.exec] Constraints on parallel algorithm implementations are underspecified Yes
3062(i) C++20 27.3.5 [algorithms.parallel.overloads] Unnecessary decay_t in is_execution_policy_v should be remove_cvref_t Yes 0
3180(i) C++20 27.4 [algorithm.syn] Inconsistently named return type for ranges::minmax_element Yes 0
3186(i) C++20 27.7.8 [alg.remove] ranges removal, partition, and partial_sort_copy algorithms discard useful information Yes 1
3191(i) C++20 27.7.13 [alg.random.shuffle] std::ranges::shuffle synopsis does not match algorithm definition Yes 1
3031(i) C++20 27.8 [alg.sorting] Algorithms and predicates with non-const reference arguments Yes 2
2444(i) C++20 [sort.heap] Inconsistent complexity for std::sort_heap Yes 3
3350(i) C++20 27.8.12 [alg.three.way] Simplify return type of lexicographical_compare_three_way Yes 0
3169(i) C++20 27.8.13 [alg.permutation.generators] ranges permutation generators discard useful information Yes 0
3048(i) C++20 27.10.6 [transform.reduce] transform_reduce(exec, first1, last1, first2, init) discards execution policy Yes 0
3222(i) C++20 27.10.9 [inclusive.scan] P0574R1 introduced preconditions on non-existent parameters Yes 0
3058(i) C++20 27.10.12 [adjacent.difference] Parallel adjacent_difference shouldn't require creating temporaries Yes 3
3200(i) C++20 27.10.16 [numeric.ops.midpoint] midpoint should not constrain T is complete Yes 2
3054(i) C++20 27.11.5 [uninitialized.copy] uninitialized_copy appears to not be able to meet its exception-safety guarantee Yes 2
3355(i) C++20 27.11.5 [uninitialized.copy] The memory algorithms should support move-only input iterators introduced by P1207 Yes 2
3133(i) C++20 28.2 [numeric.requirements] Modernizing numeric type requirements Yes 0
2870(i) C++20 28.4.7 [complex.value.ops] Default value of parameter theta of polar should be dependent Yes
2597(i) C++20 28.4.8 [complex.transcendentals] std::log misspecified for complex numbers Yes 3
3150(i) C++20 [rand.req.urng] UniformRandomBitGenerator should validate min and max Yes 3
3074(i) C++20 28.6.3 [valarray.nonmembers] Non-member functions for valarray should only deduce from the valarray Yes 0
3051(i) C++20 28.7.1 [cmath.syn] Floating point classifications were inadvertently changed in P0175 Yes 0
3201(i) C++20 28.7.4 [c.math.lerp] lerp should be marked as noexcept Yes 2
3050(i) C++20 29.5.2 [time.duration.cons] Conversion specification problem in chrono::duration constructor Yes 3
3104(i) C++20 29.5.6 [time.duration.nonmember] Fixing duration division Yes 0
3094(i) C++20 29.5.11 [time.duration.io] §[time.duration.io]p4 makes surprising claims about encoding Yes 0
3314(i) C++20 29.5.11 [time.duration.io] Is stream insertion behavior locale dependent when Period::type is micro? Yes 2
3317(i) C++20 29.5.11 [time.duration.io] Incorrect operator<< for floating-point durations Yes 0
3318(i) C++20 [time.clock.system.overview] Clarify whether clocks can represent time before their epoch Yes 0
3316(i) C++20 [time.clock.utc.overview] Correctly define epoch for utc_clock / utc_timepoint Yes 0
3145(i) C++20 29.7.6 [time.clock.file] file_clock breaks ABI for C++17 implementations Yes 1
3260(i) C++20 29.8 [time.cal] year_month* arithmetic rejects durations convertible to years Yes 2
3209(i) C++20 [time.cal.year.members] Expression in year::ok() returns clause is ill-formed Yes 0
3273(i) C++20 [time.cal.wdidx.members] Specify weekday_indexed to range of [0, 7] Yes 0
3221(i) C++20 [time.cal.ym.nonmembers] Result of year_month arithmetic with months is ambiguous Yes 0
3206(i) C++20 [time.cal.ymd.members] year_month_day conversion to sys_days uses not-existing member function Yes 0
3231(i) C++20 [time.cal.ymdlast.members] year_month_day_last::day specification does not cover !ok() values Yes 0
3319(i) C++20 29.11.1 [time.zone.general] Properly reference specification of IANA time zone database Yes 0
3232(i) C++20 [time.zone.zonedtime.overview] Inconsistency in zoned_time deduction guides Yes 0
3294(i) C++20 [time.zone.zonedtime.overview] zoned_time deduction guides misinterprets string/char* Yes 0
3224(i) C++20 [time.zone.zonedtime.ctor] zoned_time constructor from TimeZonePtr does not specify initialization of tp_ Yes 0
3225(i) C++20 [time.zone.zonedtime.ctor] zoned_time converting constructor shall not be noexcept Yes 0
3226(i) C++20 [time.zone.zonedtime.ctor] zoned_time constructor from string_view should accept zoned_time<Duration2, TimeZonePtr2> Yes 2
3359(i) C++20 29.11.8 [time.zone.leap] <chrono> leap second support should allow for negative leap seconds Yes 3
3383(i) C++20 [time.zone.leap.nonmembers] §[time.zone.leap.nonmembers] sys_seconds should be replaced with seconds Yes 1
3241(i) C++20 29.12 [time.format] chrono-spec grammar ambiguity in §[time.format] Yes 0
3262(i) C++20 29.12 [time.format] Formatting of negative durations is not specified Yes 2
3270(i) C++20 29.12 [time.format] Parsing and formatting %j with durations Yes 2
3272(i) C++20 29.12 [time.format] %I%p should parse/format duration since midnight Yes 0
3332(i) C++20 29.12 [time.format] Issue in §[time.format] Yes 0
3131(i) C++20 29.13 [time.parse] addressof all the things Yes 0
3218(i) C++20 29.13 [time.parse] Modifier for %d parse flag does not match POSIX and format specification Yes 0
3230(i) C++20 29.13 [time.parse] Format specifier %y/%Y is missing locale alternative versions Yes 0
3235(i) C++20 29.13 [time.parse] parse manipulator without abbreviation is not callable Yes 0
3245(i) C++20 29.13 [time.parse] Unnecessary restriction on '%p' parse specifier Yes 0
3252(i) C++20 29.13 [time.parse] Parse locale's aware modifiers for commands are not consistent with POSIX spec Yes 2
3269(i) C++20 29.13 [time.parse] Parse manipulators do not specify the result of the extraction from stream Yes 2
3130(i) C++20 31 [input.output] §[input.output] needs many addressof Yes 0
3083(i) C++20 [ios.base.storage] What should ios::iword(-1) do? Yes 0
2243(i) C++20 [istream.unformatted] istream::putback problem Yes 3
1203(i) C++20 [ostream.rvalue] More useful rvalue stream insertion Yes 2
2995(i) C++20 [stringbuf.cons] basic_stringbuf default constructor forbids it from using SSO capacity Yes 3
2943(i) C++20 [filebuf.members] Problematic specification of the wide version of basic_filebuf::open Yes 2
3253(i) C++20 [syncstream.syncbuf.overview] basic_syncbuf::basic_syncbuf() should not be explicit Yes 0
3334(i) C++20 31.11.3 [syncstream.osyncstream] basic_osyncstream move assignment and destruction calls basic_syncbuf::emit() twice Yes 3
3127(i) C++20 [syncstream.osyncstream.overview] basic_osyncstream::rdbuf needs a const_cast Yes 0
3244(i) C++20 [fs.path.req] Constraints for Source in §[fs.path.req] insufficiently constrainty Yes 0
3055(i) C++20 [fs.path.concat] path::operator+=(single-character) misspecified Yes 3
2966(i) C++20 [fs.path.native.obs] Incomplete resolution of US 74 Yes
2936(i) C++20 [fs.path.compare] Path comparison is defined in terms of the generic format Yes 2
3070(i) C++20 [fs.path.gen] path::lexically_relative causes surprising results if a filename can also be a root-name Yes 2
3096(i) C++20 [fs.path.gen] path::lexically_relative is confused by trailing slashes Yes 2
2989(i) C++20 [fs.path.io] path's stream insertion operator lets you insert everything under the sun Yes 2
3065(i) C++20 [fs.path.nonmember] LWG 2989 missed that all path's other operators should be hidden friends as well Yes 2
2965(i) C++20 [fs.filesystem.error.members] Non-existing path::native_string() in filesystem_error::what() specification Yes 0
3043(i) C++20 [fs.filesystem.error.members] Bogus postcondition for filesystem_error constructor Yes 0
2851(i) C++20 [fs.enum.file.type] std::filesystem enum classes are now underspecified Yes 2
3013(i) C++20 [fs.dir.itr.members] (recursive_)directory_iterator construction and traversal should not be noexcept Yes 0
3067(i) C++20 [fs.rec.dir.itr.members] recursive_directory_iterator::pop must invalidate Yes 0
2682(i) C++20 [fs.op.copy] filesystem::copy() won't create a symlink to a directory Yes 2
3015(i) C++20 [fs.op.copy] copy_options::unspecified underspecified Yes 3
2849(i) C++20 [fs.op.copy.file] Why does !is_regular_file(from) cause copy_file to report a "file already exists" error? Yes 2
3014(i) C++20 [fs.op.copy.file] More noexcept issues with filesystem operations Yes
2935(i) C++20 [fs.op.create.directories] What should create_directories do when p already exists but is not a directory? Yes 0
3079(i) C++20 [fs.op.create.directory] LWG 2935 forgot to fix the existing_p overloads of create_directory Yes 0
2937(i) C++20 [fs.op.equivalent] Is equivalent("existing_thing", "not_existing_thing") an error? Yes 0
2816(i) C++20 [fs.op.resize.file] resize_file has impossible postcondition Yes 3
3026(i) C++20 [fs.op.weakly.canonical] filesystem::weakly_canonical still defined in terms of canonical(p, base) Yes 0
3296(i) C++20 32.7 [re.regex] Inconsistent default argument for basic_regex<>::assign Yes 0
2183(i) C++20 32.9.2 [re.results.const] Muddled allocator requirements for match_results constructors Yes 3
2184(i) C++20 32.9.2 [re.results.const] Muddled allocator requirements for match_results assignments Yes 3
3129(i) C++20 [re.tokiter.cnstr] regex_token_iterator constructor uses wrong pointer arithmetic Yes 0
2941(i) C++20 33.2.4 [thread.req.timing] §[thread.req.timing] wording should apply to both member and namespace-level functions Yes 0
3254(i) C++20 33.3.3 [stoptoken] Strike stop_token's operator!= Yes 0
3362(i) C++20 33.3.4 [stopsource] Strike stop_source's operator!= Yes 0
3039(i) C++20 [thread.thread.constr] Unnecessary decay in thread and packaged_task Yes 0
2988(i) C++20 33.5.2 [atomics.syn] Clause 32 cleanup missed one typename Yes 0
3160(i) C++20 33.5.7 [atomics.ref.generic] atomic_ref() = delete; should be deleted Yes 0
3012(i) C++20 33.5.8 [atomics.types.generic] atomic<T> is unimplementable for non-is_trivially_copy_constructible T Yes 2
3045(i) C++20 [atomics.types.float] atomic<floating-point> doesn't have value_type or difference_type Yes 0
3030(i) C++20 33.6.6 [thread.lock.algorithm] Who shall meet the requirements of try_lock? Yes 0
2412(i) C++20 33.10.6 [futures.promise] promise::set_value() and promise::get_future() should not race Yes 3
2976(i) C++20 33.10.10 [futures.task] Dangling uses_allocator specialization for packaged_task Yes 3
3395(i) C++20 99 [defns.comparison] Definition for three-way comparison needs to be updated (US 152) Yes 1
3128(i) C++20 99 [depr.strstream.oper] strstream::rdbuf needs a const_cast Yes 0
2980(i) C++20 99 [depr.util.smartptr.shared.atomic] Cannot compare_exchange empty pointers Yes
2940(i) C++20 D.14 [depr.meta.types] result_of specification also needs a little cleanup Yes 3
3042(i) C++20 D.14 [depr.meta.types] is_literal_type_v should be inline Yes 0
3328(i) C++20 D.21 [depr.fs.path.factory] Clarify that std::string is not good for UTF-8 Yes 0

C++17 (283 issues)

Issue Status Section Title Proposed Resolution Priority Duplicates
2872(i) C++17 3 [intro.defs] Add definition for direct-non-list-initialization Yes
2679(i) C++17 [structure.specifications] Inconsistent Use of Effects and Equivalent To Yes 3
2710(i) C++17 [structure.specifications] "Effects: Equivalent to ..." doesn't count "Synchronization:" as determined semantics Yes 0
2380(i) C++17 [headers] May <cstdlib> provide long ::abs(long) and long long ::abs(long long)? Yes 2
2428(i) C++17 [using.headers] "External declaration" used without being defined Yes 0
2170(i) C++17 [utility.arg.requirements] Aggregates cannot be DefaultConstructible Yes 2
2016(i) C++17 [allocator.requirements] Allocators must be no-throw swappable Yes 2
2260(i) C++17 [allocator.requirements] Missing requirement for Allocator::pointer Yes 3
2384(i) C++17 [allocator.requirements] Allocator's deallocate function needs better specification Yes 3
2447(i) C++17 [allocator.requirements] Allocators and volatile-qualified value types Yes 4
2455(i) C++17 [allocator.requirements] Allocator default construction should be allowed to throw Yes
2466(i) C++17 [allocator.requirements] allocator_traits::max_size() default behavior is incorrect Yes 3
2467(i) C++17 [allocator.requirements] is_always_equal has slightly inconsistent default Yes 0
2470(i) C++17 [allocator.requirements] Allocator's destroy function should be allowed to fail to instantiate Yes
2129(i) C++17 [namespace.std] User specializations of std::initializer_list Yes 3
2340(i) C++17 [replacement.functions] Replacement allocation functions declared as inline Yes 2
2468(i) C++17 [res.on.arguments] Self-move-assignment of library types Yes 2
2224(i) C++17 [res.on.objects] Ambiguous status of access to non-live objects Yes 2
2133(i) C++17 [global.functions] Attitude to overloaded comma for iterators Yes 3
2795(i) C++17 [global.functions] §[global.functions] provides incorrect example of ADL use Yes
2259(i) C++17 [member.functions] Issues in rules for member functions Yes 3
2866(i) C++17 [derivation] Incorrect derived classes constraints Yes
2709(i) C++17 17.2 [support.types] offsetof is unnecessarily imprecise Yes 2
2422(i) C++17 [numeric.limits.members] std::numeric_limits<T>::is_modulo description: "most machines" errata Yes 2
2458(i) C++17 17.6 [support.dynamic] N3778 and new library deallocation signatures Yes 2
2510(i) C++17 17.6 [support.dynamic] Tag types should not be DefaultConstructible Yes 2
2425(i) C++17 17.6.3 [new.delete] operator delete(void*, size_t) doesn't invalidate pointers sufficiently Yes 0
2378(i) C++17 [bad.alloc] Behaviour of standard exception types Yes 0
2111(i) C++17 [terminate] Which unexpected/terminate handler is called from the exception handling runtime? Yes 3
2855(i) C++17 17.9.8 [except.nested] std::throw_with_nested("string_literal") Yes 0
2483(i) C++17 17.9.8 [except.nested] throw_with_nested() should use is_final Yes 2
2484(i) C++17 17.9.8 [except.nested] rethrow_if_nested() is doubly unimplementable Yes 2
2784(i) C++17 17.9.8 [except.nested] Resolution to LWG 2484 is missing "otherwise, no effects" and is hard to parse Yes 0
2536(i) C++17 17.14 [support.c.headers] What should <complex.h> do? Yes 2
2835(i) C++17 17.14 [support.c.headers] LWG 2536 seems to misspecify <tgmath.h> Yes 0
2234(i) C++17 19.3 [assertions] assert() should allow usage in constant expressions Yes 2
2559(i) C++17 19.3 [assertions] Error in LWG 2234's resolution Yes 0
2686(i) C++17 19.5.2 [system.error.syn] Why is std::hash specialized for error_code, but not error_condition? Yes 3
2377(i) C++17 20.2.5 [ptr.align] std::align requirements overly strict Yes 0
2296(i) C++17 20.2.11 [specialized.addressof] std::addressof should be constexpr Yes 3
2598(i) C++17 20.2.11 [specialized.addressof] addressof works on temporaries Yes 3
2361(i) C++17 [unique.ptr.single] Apply 2299 resolution throughout library Yes
2801(i) C++17 [unique.ptr.single.ctor] Default-constructibility of unique_ptr Yes 2
2905(i) C++17 [unique.ptr.single.ctor] is_constructible_v<unique_ptr<P, D>, P, D const &> should be false when D is not copy constructible Yes
2520(i) C++17 [unique.ptr.runtime.ctor] N4089 broke initializing unique_ptr<T[]> from a nullptr Yes 2
2376(i) C++17 [util.smartptr.weak.bad] bad_weak_ptr::what() overspecified Yes
2873(i) C++17 [util.smartptr.shared] Add noexcept to several shared_ptr related functions Yes
2365(i) C++17 [util.smartptr.shared] Missing noexcept in shared_ptr::shared_ptr(nullptr_t) Yes
2411(i) C++17 [util.smartptr.shared] shared_ptr is only contextually convertible to bool Yes 0
2802(i) C++17 [util.smartptr.shared.const] shared_ptr constructor requirements for a deleter Yes 2
2874(i) C++17 [util.smartptr.shared.const] Constructor shared_ptr::shared_ptr(Y*) should be constrained Yes
2875(i) C++17 [util.smartptr.shared.const] shared_ptr::shared_ptr(Y*, D, […]) constructors should be constrained Yes
2876(i) C++17 [util.smartptr.shared.const] shared_ptr::shared_ptr(const weak_ptr<Y>&) constructor should be constrained Yes
2399(i) C++17 [util.smartptr.shared.const] shared_ptr's constructor from unique_ptr should be constrained Yes 0
2415(i) C++17 [util.smartptr.shared.const] Inconsistency between unique_ptr and shared_ptr Yes 2
2495(i) C++17 [util.smartptr.shared.const] There is no such thing as an Exception Safety element Yes 0
2685(i) C++17 [util.smartptr.shared.const] shared_ptr deleters must not not throw on move construction Yes 0
2434(i) C++17 [util.smartptr.shared.obs] shared_ptr::use_count() is efficient Yes 0
2572(i) C++17 [util.smartptr.shared.obs] The remarks for shared_ptr::operator* should apply to cv-qualified void as well Yes 0
2696(i) C++17 [util.smartptr.shared.create] Interaction between make_shared and enable_shared_from_this is underspecified Yes 2
2908(i) C++17 [util.smartptr.shared.cmp] The less-than operator for shared pointers could do more Yes
2400(i) C++17 [util.smartptr.getdeleter] shared_ptr's get_deleter() should use addressof() Yes 0
2724(i) C++17 20.4.2 [mem.res.class] The protected virtual member functions of memory_resource should be private Yes 4
2476(i) C++17 20.5.1 [allocator.adaptor.syn] scoped_allocator_adaptor is not assignable Yes 0
2782(i) C++17 20.5.3 [allocator.adaptor.cnstr] scoped_allocator_adaptor constructors must be constrained Yes 0
2586(i) C++17 20.5.4 [allocator.adaptor.members] Wrong value category used in scoped_allocator_adaptor::construct() Yes 0
2582(i) C++17 21 [meta] §[res.on.functions]/2's prohibition against incomplete types shouldn't apply to type traits Yes 0
2514(i) C++17 21.3.2 [meta.rqmts] Type traits must not be final Yes 3
2581(i) C++17 21.3.3 [meta.type.synop] Specialization of <type_traits> variable templates should be prohibited Yes 0
2911(i) C++17 [meta.unary.prop] An is_aggregate type trait is needed Yes
2336(i) C++17 [meta.unary.prop] is_trivially_constructible/is_trivially_assignable traits are always false Yes 3
2367(i) C++17 [meta.unary.prop] pair and tuple are not correctly implemented for is_constructible with no args Yes 3
2560(i) C++17 [meta.unary.prop] is_constructible underspecified when applied to a function type Yes 0
2738(i) C++17 [meta.unary.prop] is_constructible with void types Yes
2101(i) C++17 21.3.8 [meta.trans] Some transformation types can produce impossible types Yes 3
2396(i) C++17 [meta.trans.other] underlying_type doesn't say what to do for an incomplete enumeration type Yes 0
2408(i) C++17 [meta.trans.other] SFINAE-friendly common_type/iterator_traits is missing in C++14 Yes
2460(i) C++17 [meta.trans.other] LWG issue 2408 and value categories Yes 2
2569(i) C++17 21.3.9 [meta.logical] conjunction and disjunction requirements are too strict Yes 2
2587(i) C++17 21.3.9 [meta.logical] "Convertible to bool" requirement in conjunction and disjunction Yes 3
2557(i) C++17 21.3.9 [meta.logical] Logical operator traits are broken in the zero-argument case Yes 0
2567(i) C++17 21.3.9 [meta.logical] Specification of logical operator traits uses BaseCharacteristic, which is defined only for UnaryTypeTraits and BinaryTypeTraits Yes 2
2212(i) C++17 22.2 [utility] tuple_size for const pair request <tuple> header Yes 3
2729(i) C++17 22.3.2 [pairs.pair] Missing SFINAE on std::pair::operator= Yes 2
2773(i) C++17 22.4.1 [tuple.general] Making std::ignore constexpr Yes 0
2796(i) C++17 22.4.1 [tuple.general] tuple should be a literal type Yes 2
2312(i) C++17 [tuple.cnstr] tuple's constructor constraints need to be phrased more precisely Yes 2
2549(i) C++17 [tuple.cnstr] Tuple EXPLICIT constructor templates that take tuple parameters end up taking references to temporaries and will create dangling references Yes 2
2770(i) C++17 22.4.7 [tuple.helper] tuple_size<const T> specialization is not SFINAE compatible and breaks decomposition declarations Yes 1
2485(i) C++17 22.4.8 [tuple.elem] get() should be overloaded for const tuple&& Yes 1
2857(i) C++17 22.5 [optional] {variant,optional,any}::emplace should return the constructed value Yes 1
2900(i) C++17 22.5.3 [optional.optional] The copy and move constructors of optional are not constexpr Yes
2756(i) C++17 22.5.3 [optional.optional] C++ WP optional<T> should 'forward' T's implicit conversions Yes 1
2842(i) C++17 [optional.ctor] in_place_t check for optional::optional(U&&) should decay U Yes 0
2748(i) C++17 [optional.swap] swappable traits for optionals Yes 0
2740(i) C++17 [optional.observe] constexpr optional<T>::operator-> Yes 0
2736(i) C++17 22.5.4 [optional.nullopt] nullopt_t insufficiently constrained Yes 2
2806(i) C++17 22.5.5 [optional.bad.access] Base class of bad_optional_access Yes 1
2934(i) C++17 22.5.8 [optional.comp.with.t] optional<const T> doesn't compare with T Yes
2901(i) C++17 22.6.3 [variant.variant] Variants cannot properly support allocators Yes 0
2903(i) C++17 [variant.ctor] The form of initialization for the emplace-constructors is not specified Yes
2904(i) C++17 [variant.assign] Make variant move-assignment more exception safe Yes
2749(i) C++17 [variant.swap] swappable traits for variants Yes 1
2868(i) C++17 22.7.3 [any.bad.any.cast] Missing specification of bad_any_cast::what() Yes
2789(i) C++17 22.7.4 [any.class] Equivalence of contained objects Yes 0
2744(i) C++17 [any.cons] any's in_place constructors Yes 0
2768(i) C++17 22.7.5 [any.nonmembers] any_cast and move semantics Yes 0
2769(i) C++17 22.7.5 [any.nonmembers] Redundant const in the return type of any_cast(const any&) Yes 0
2250(i) C++17 [bitset.cons] Follow-up On Library Issue 2207 Yes 3
2219(i) C++17 22.10.4 [func.require] INVOKE-ing a pointer to member with a reference_wrapper as the object expression Yes 2
2387(i) C++17 22.10.4 [func.require] More nested types that must be accessible and unambiguous Yes
2486(i) C++17 22.10.4 [func.require] mem_fn() should be required to use perfect forwarding Yes 0
2807(i) C++17 22.10.5 [func.invoke] std::invoke should use std::is_nothrow_callable Yes 3
2435(i) C++17 [refwrap.invoke] reference_wrapper::operator()'s Remark should be deleted Yes 4
2450(i) C++17 22.10.8 [comparisons] (greater|less|greater_equal|less_equal)<void> do not yield a total order for pointers Yes 2
2562(i) C++17 22.10.8 [comparisons] Consistent total ordering of pointers by comparison functors Yes 3
2767(i) C++17 22.10.13 [func.not.fn] not_fn call_wrapper can form invalid types Yes 0
2487(i) C++17 [func.bind.bind] bind() should be const-overloaded, not cv-overloaded Yes 2
2545(i) C++17 [func.bind.bind] Simplify wording for bind without explicitly specified return type Yes 3
2488(i) C++17 [func.bind.place] Placeholders should be allowed and encouraged to be constexpr Yes 2
2489(i) C++17 22.10.16 [func.memfn] mem_fn() should be noexcept Yes 0
2233(i) C++17 [func.wrap.badcall] bad_function_call::what() unhelpful Yes 3
2062(i) C++17 [func.wrap.func] Effect contradictions w/o no-throw guarantee of std::function swaps Yes 2
2385(i) C++17 [func.wrap.func] function::assign allocator argument doesn't make sense Yes 2
2393(i) C++17 [func.wrap.func] std::function's Callable definition is broken Yes 2
2401(i) C++17 [func.wrap.func] std::function needs more noexcept Yes 0
2420(i) C++17 [func.wrap.func] function<void(ArgTypes...)> does not discard the return value of the target object Yes 1
2850(i) C++17 [func.wrap.func.con] std::function move constructor does unnecessary work Yes 0
2565(i) C++17 [func.wrap.func.con] std::function's move constructor should guarantee nothrow for reference_wrappers and function pointers Yes 0
2781(i) C++17 [func.wrap.func.con] Contradictory requirements for std::function and std::reference_wrapper Yes 0
2591(i) C++17 [func.wrap.func.targ] std::function's member template target() should not lead to undefined behaviour Yes 3
2119(i) C++17 22.10.19 [unord.hash] Missing hash specializations for extended integer types Yes 3
2778(i) C++17 23.3 [string.view] basic_string_view is missing constexpr Yes 0
2826(i) C++17 [string.view.iterators] string_view iterators use old wording Yes 0
2777(i) C++17 [string.view.ops] basic_string_view::copy should use char_traits::copy Yes 0
2755(i) C++17 23.3.5 [string.view.io] §[string.view.io] uses non-existent basic_string_view::to_string function Yes 0
2063(i) C++17 23.4.3 [basic.string] Contradictory requirements for string move assignment Yes 3
2861(i) C++17 [string.require] basic_string should require that charT match traits::char_type Yes
2760(i) C++17 [string.require] non-const basic_string::data should not invalidate iterators Yes
2742(i) C++17 [string.cons] Inconsistent string interface taking string_view Yes 1
2583(i) C++17 [string.cons] There is no way to supply an allocator for basic_string(str, pos) Yes 0
2834(i) C++17 [string.capacity] Resolution LWG 2223 is missing wording about end iterators Yes 0
2475(i) C++17 [string.access] Allow overwriting of std::basic_string terminator with charT() to allow cleaner interoperation with legacy APIs Yes 3
2788(i) C++17 [string.append] basic_string range mutators unintentionally require a default constructible allocator Yes 2
2758(i) C++17 [string.assign] std::string{}.assign("ABCDE", 0, 1) is ambiguous Yes 1
2579(i) C++17 [string.assign] Inconsistency wrt Allocators in basic_string assignment vs. basic_string::assign Yes 0
2771(i) C++17 [string.compare] Broken Effects of some basic_string::compare functions in terms of basic_string_view Yes 1
2403(i) C++17 23.4.5 [string.conversions] stof() should call strtof() and wcstof() Yes 2
2482(i) C++17 23.5 [c.strings] §[c.strings] Table 73 mentions nonexistent functions Yes
2261(i) C++17 24.2 [container.requirements] Are containers required to use their 'pointer' type internally? Yes 2
2218(i) C++17 24.2.2 [container.requirements.general] Unclear how containers use allocator_traits::construct() Yes 3
2448(i) C++17 24.2.2 [container.requirements.general] Non-normative Container destructor specification Yes 0
2794(i) C++17 24.2.2 [container.requirements.general] Missing requirements for allocator pointers Yes 0
2266(i) C++17 24.2.4 [sequence.reqmts] vector and deque have incorrect insert requirements Yes 2
2698(i) C++17 24.2.4 [sequence.reqmts] Effect of assign() on iterators/pointers/references Yes 0
2436(i) C++17 24.2.7 [associative.reqmts] Comparators for associative containers should always be CopyConstructible Yes 2
2542(i) C++17 24.2.7 [associative.reqmts] Missing const requirements for associative containers Yes 1
2156(i) C++17 24.2.8 [unord.req] Unordered containers' reserve(n) reserves for n-1 elements Yes 3
2540(i) C++17 24.2.8 [unord.req] unordered_multimap::insert hint iterator Yes 3
2550(i) C++17 24.2.8 [unord.req] Wording of unordered container's clear() method complexity Yes 2
2427(i) C++17 24.3.1 [sequences.general] Container adaptors as sequence containers, redux Yes 0
2310(i) C++17 [array.overview] Public exposition only member in std::array Yes 4
2590(i) C++17 [array.overview] Aggregate initialization for std::array Yes 0
2364(i) C++17 [deque.modifiers] deque and vector pop_back don't specify iterator invalidation requirements Yes 0
2477(i) C++17 [deque.modifiers] Inconsistency of wordings in std::vector::erase() and std::deque::erase() Yes 0
2585(i) C++17 [forward.list.modifiers] forward_list::resize(size_type, const value_type&) effects incorrect Yes 0
2824(i) C++17 [list.ops] list::sort should say that the order of elements is unspecified if an exception is thrown Yes 0
2160(i) C++17 [vector.capacity] Unintended destruction ordering-specification of resize Yes 1
2223(i) C++17 [vector.capacity] shrink_to_fit effect on iterator validity Yes 2
2596(i) C++17 [vector.data] vector::data() should use addressof Yes 0
2853(i) C++17 [vector.modifiers] Possible inconsistency in specification of erase in [vector.modifiers] Yes 0
2059(i) C++17 24.4.4 [map] C++0x ambiguity problem with map::erase Yes 3
2354(i) C++17 [map.overview] Unnecessary copying when inserting into maps with braced-init syntax Yes 2
2469(i) C++17 [map.access] Wrong specification of Requires clause of operator[] for map and unordered_map Yes 3
2464(i) C++17 [map.modifiers] try_emplace and insert_or_assign misspecified Yes 2
2571(i) C++17 [map.modifiers] §[map.modifiers]/2 imposes nonsensical requirement on insert(InputIterator, InputIterator) Yes 0
2076(i) C++17 [set.cons] Bad CopyConstructible requirement in set constructors Yes 3
2230(i) C++17 24.5 [unord] "see below" for initializer-list constructors of unordered containers Yes 4
2566(i) C++17 24.6 [container.adaptors] Requirements on the first template parameter of container adaptors Yes 0
2684(i) C++17 24.6.7 [priority.queue] priority_queue lacking comparator typedef Yes 0
2537(i) C++17 [priqueue.cons.alloc] Constructors for priority_queue taking allocators should call make_heap Yes 0
2578(i) C++17 25.3 [iterator.requirements] Iterator requirements should reference iterator traits Yes 3
2437(i) C++17 [iterator.iterators] iterator_traits<OutIt>::reference can and can't be void Yes 3
2519(i) C++17 [random.access.iterators] Iterator operator-= has gratuitous undefined behaviour Yes 2
2353(i) C++17 25.4.3 [iterator.operations] std::next is over-constrained Yes 4
2106(i) C++17 25.5.4 [move.iterators] move_iterator wrapping iterators returning prvalues Yes 3
2576(i) C++17 25.6 [stream.iterators] istream_iterator and ostream_iterator should use std::addressof Yes 0
2793(i) C++17 [istream.iterator.cons] Awkward conflation of trivial special members of istream_iterator Yes
2878(i) C++17 [istream.iterator.cons] Missing DefaultConstructible requirement for istream_iterator default constructor Yes
2804(i) C++17 [istream.iterator.cons] Unconditional constexpr default constructor for istream_iterator Yes 0
2790(i) C++17 25.6.4 [istreambuf.iterator] Missing specification of istreambuf_iterator::operator-> Yes 3
2544(i) C++17 [istreambuf.iterator.cons] istreambuf_iterator(basic_streambuf<charT, traits>* s) effects unclear when s is 0 Yes 3
2812(i) C++17 25.7 [iterator.range] Range access is available with <string_view> Yes 0
2727(i) C++17 27.1 [algorithms.general] Parallel algorithms with constexpr specifier Yes 0
2718(i) C++17 27.3.3 [algorithms.parallel.exec] Parallelism bug in [algorithms.parallel.exec] p2 Yes
2747(i) C++17 27.6.5 [alg.foreach] Possibly redundant std::move in [alg.foreach] Yes 0
2689(i) C++17 27.7.1 [alg.copy] Parallel versions of std::copy and std::move shouldn't be in order Yes 0
2439(i) C++17 27.7.9 [alg.unique] unique_copy() sometimes can't fall back to reading its output Yes 3
2716(i) C++17 27.7.12 [alg.random.sample] Specification of shuffle and sample disallows lvalue URNGs Yes 0
2492(i) C++17 27.8 [alg.sorting] Clarify requirements for comp Yes 0
2166(i) C++17 27.8.8 [alg.heap.operations] Heap property underspecified? Yes 3
2239(i) C++17 27.8.9 [alg.min.max] min/max/minmax requirements Yes 3
2325(i) C++17 27.8.9 [alg.min.max] minmax_element()'s behavior differing from max_element()'s should be noted Yes 3
2369(i) C++17 27.8.9 [alg.min.max] constexpr max(initializer_list) vs max_element Yes 3
2688(i) C++17 27.8.10 [alg.clamp] clamp misses preconditions and has extraneous condition on result Yes 0
2687(i) C++17 27.10.8 [exclusive.scan] {inclusive,exclusive}_scan misspecified Yes 1
2837(i) C++17 27.10.14 [numeric.ops.gcd] gcd and lcm should support a wider range of input values Yes 0
2759(i) C++17 27.10.14 [numeric.ops.gcd] gcd / lcm and bool for the WP Yes
2433(i) C++17 27.11 [specialized.algorithms] uninitialized_copy()/etc. should tolerate overloaded operator& Yes 0
2699(i) C++17 28.2 [numeric.requirements] Missing restriction in [numeric.requirements] Yes 3
2459(i) C++17 28.4.7 [complex.value.ops] std::polar should require a non-negative rho Yes 0
2181(i) C++17 [rand.req.seedseq] Exceptions from seed sequence operations Yes 3
2440(i) C++17 [rand.util.seedseq] seed_seq::size() should be noexcept Yes 0
2168(i) C++17 [rand.dist.uni.real] Inconsistent specification of uniform_real_distribution constructor Yes 3
2406(i) C++17 [rand.dist.bern.negbin] negative_binomial_distribution should reject p == 1 Yes 3
2192(i) C++17 28.7 [c.math] Validity and return type of std::abs(0u) is unclear Yes 2
2735(i) C++17 28.7 [c.math] std::abs(short), std::abs(signed char) and others should return int instead of double in order to be compatible with C++98 and C Yes 3
2739(i) C++17 29.6.6 [time.point.nonmember] Issue with time_point non-member subtraction with an unsigned duration Yes 0
2694(i) C++17 [locale.facet] Application of LWG 436 accidentally deleted definition of "facet" Yes 3
2394(i) C++17 [locale.members] locale::name specification unclear — what is implementation-defined? Yes 3
1169(i) C++17 [facet.num.get.virtuals] num_get not fully compatible with strto* Yes 3
2462(i) C++17 31.5.2 [ios.base] std::ios_base::failure is overspecified Yes 3
2765(i) C++17 [ios.init] Did LWG 1123 go too far? Yes 0
2244(i) C++17 [istream.unformatted] Issue on basic_istream::seekg Yes 3
2328(i) C++17 [istream.rvalue] Rvalue stream extraction should use perfect forwarding Yes 3
2221(i) C++17 31.7.6 [output.streams] No formatted output operator for nullptr Yes 3
2534(i) C++17 [ostream.rvalue] Constrain rvalue stream operators Yes 3
2785(i) C++17 31.7.9 [quoted.manip] quoted should work with basic_string_view Yes 0
2676(i) C++17 31.10 [file.streams] Provide filesystem::path overloads for File-based streams Yes 2
2473(i) C++17 [filebuf.virtuals] basic_filebuf's relation to C FILE semantics Yes 2
2680(i) C++17 31.12 [filesystems] Add "Equivalent to" to filesystem Yes 2
2707(i) C++17 31.12.6 [fs.class.path] path construction and assignment should have "string_type&&" overloads Yes 0
2711(i) C++17 [fs.path.construct] path is convertible from approximately everything under the sun Yes 1
2664(i) C++17 [fs.path.append] operator/ (and other append) semantics not useful if argument has root Yes 2
2732(i) C++17 [fs.path.append] Questionable specification of path::operator/= and path::append Yes 2
2667(i) C++17 [fs.path.decompose] path::root_directory() description is confusing Yes 0
2674(i) C++17 [fs.path.itr] Bidirectional iterator requirement on path::iterator is very expensive Yes 2
2678(i) C++17 [fs.enum.file.type] std::filesystem enum classes overspecified Yes 3
2787(i) C++17 31.12.9 [fs.class.file.status] §[fs.file_status.cons] doesn't match class definition Yes 0
2723(i) C++17 31.12.11 [fs.class.directory.iterator] Do directory_iterator and recursive_directory_iterator become the end iterator upon error? Yes 0
2726(i) C++17 [fs.dir.itr.members] [recursive_]directory_iterator::increment(error_code&) is underspecified Yes 0
2706(i) C++17 31.12.12 [fs.class.rec.dir.itr] Error reporting for recursive_directory_iterator::pop() is under-specified Yes 0
2669(i) C++17 [fs.rec.dir.itr.members] recursive_directory_iterator effects refers to non-existent functions Yes 0
2704(i) C++17 [fs.rec.dir.itr.members] recursive_directory_iterator's members should require '*this is dereferenceable' Yes 1
2956(i) C++17 [fs.op.canonical] filesystem::canonical() still defined in terms of absolute(p, base) Yes 1
2671(i) C++17 [fs.op.copy] Errors in Copy Yes 0
2681(i) C++17 [fs.op.copy] filesystem::copy() cannot copy symlinks Yes 2
2683(i) C++17 [fs.op.copy] filesystem::copy() says "no effects" Yes 3
2712(i) C++17 [fs.op.copy.file] copy_file(from, to, ...) has a number of unspecified error conditions Yes 2
2722(i) C++17 [fs.op.equivalent] equivalent incorrectly specifies throws clause Yes 3
2725(i) C++17 [fs.op.exists] filesystem::exists(const path&, error_code&) error reporting Yes 1
2672(i) C++17 [fs.op.is.empty] Should is_empty use error_code in its specification? Yes 3
2719(i) C++17 [fs.op.permissions] permissions function should not be noexcept due to narrow contract Yes 0
2720(i) C++17 [fs.op.permissions] permissions function incorrectly specified for symlinks Yes 2
2721(i) C++17 [fs.op.remove.all] remove_all has incorrect post conditions Yes 3
2728(i) C++17 [fs.op.status] status(p).permissions() and symlink_status(p).permissions() are not specified Yes 0
2673(i) C++17 [fs.op.status] status() effects cannot be implemented as specified Yes 0
2503(i) C++17 32.4.2 [re.synopt] multiline option should be added to syntax_option_type Yes 2
2217(i) C++17 32.8.3 [re.submatch.op] operator==(sub_match, string) slices on embedded '\0's Yes 2
2589(i) C++17 32.9 [re.results] match_results can't satisfy the requirements of a container Yes 3
2273(i) C++17 32.10.2 [re.alg.match] regex_match ambiguity Yes 2
2584(i) C++17 32.12 [re.grammar] <regex> ECMAScript IdentityEscape is ambiguous Yes 2
2441(i) C++17 33.5.8 [atomics.types.generic] Exact-width atomic typedefs should be provided Yes 0
2426(i) C++17 [atomics.types.operations] Issue about compare_exchange Yes 1
2309(i) C++17 [thread.mutex.requirements.mutex] mutex::lock() should not throw device_or_resource_busy Yes 0
2577(i) C++17 [thread.lock.unique.cons] {shared,unique}_lock should use std::addressof Yes 0
2442(i) C++17 [thread.once.callonce] call_once() shouldn't DECAY_COPY() Yes
2276(i) C++17 33.10 [futures] Missing requirement on std::promise::set_exception Yes
2523(i) C++17 33.10.6 [futures.promise] std::promise synopsis shows two set_value_at_thread_exit()'s for no apparent reason Yes 0
2531(i) C++17 33.10.7 [futures.unique.future] future::get should explicitly state that the shared state is released Yes 3
2556(i) C++17 33.10.7 [futures.unique.future] Wide contract for future::share() Yes 3
2752(i) C++17 33.10.9 [futures.async] "Throws:" clauses of async and packaged_task are unimplementable Yes 3
2921(i) C++17 33.10.10 [futures.task] packaged_task and type-erased allocators Yes
2407(i) C++17 [futures.task.members] packaged_task(allocator_arg_t, const Allocator&, F&&) should neither be constrained nor explicit Yes
2890(i) C++17 99 [defns.obj.state] The definition of 'object state' applies only to class types Yes
2127(i) C++17 99 [depr.storage.iterator] Move-construction with raw_storage_iterator Yes 3
2454(i) C++17 99 [depr.storage.iterator] Add raw_storage_iterator::base() member Yes 0
2072(i) C++17 99 [depr.temporary.buffer] Unclear wording about capacity of temporary buffers Yes 3
2670(i) C++17 99 [fs.op.system_complete] system_complete refers to undefined variable 'base' Yes 0
2404(i) C++17 99 [mismatch] mismatch()'s complexity needs to be updated Yes 0
2786(i) C++17 C.4.9 [diff.cpp14.utilities] Annex C should mention shared_ptr changes for array support Yes 0
2838(i) C++17 D.14 [depr.meta.types] is_literal_type specification needs a little cleanup Yes 0
2438(i) C++17 D.17 [depr.iterator] std::iterator inheritance shouldn't be mandated Yes 3

C++14 (149 issues)

Issue Status Section Title Proposed Resolution Priority Duplicates
2225(i) C++14 [using.headers] Unrealistic header inclusion checks required Yes
2291(i) C++14 [hash.requirements] std::hash is vulnerable to collision DoS attack Yes
2065(i) C++14 [allocator.requirements] Minimal allocator interface Yes
2081(i) C++14 [allocator.requirements] Allocator requirements should include CopyConstructible Yes
2147(i) C++14 [allocator.requirements] Unclear hint type in Allocator's allocate function Yes
2162(i) C++14 [allocator.requirements] allocator_traits::max_size missing noexcept Yes
2263(i) C++14 [allocator.requirements] Comparing iterators and allocator pointers with different const-character Yes 1
2112(i) C++14 16.4.6 [conforming] User-defined classes that cannot be derived from Yes 1
2013(i) C++14 [constexpr.functions] Do library implementers have the freedom to add constexpr? Yes
2044(i) C++14 [algorithm.stable] No definition of "Stable" for copy algorithms Yes
2099(i) C++14 17.13 [support.runtime] Unnecessary constraints of va_start() usage Yes
2145(i) C++14 19.5.3 [syserr.errcat] error_category default constructor Yes
2109(i) C++14 19.5.7 [syserr.hash] Incorrect requirements for hash specializations Yes
2284(i) C++14 20.2.9 [allocator.traits] Inconsistency in allocator_traits::max_size Yes
2103(i) C++14 20.2.10 [default.allocator] std::allocator_traits<std::allocator<T>>::propagate_on_container_move_assignment Yes
2047(i) C++14 [unique.ptr.single.asgn] Incorrect "mixed" move-assignment semantics of unique_ptr Yes
2246(i) C++14 [unique.ptr.single.asgn] unique_ptr assignment effects w.r.t. deleter Yes
2169(i) C++14 [unique.ptr.runtime.modifiers] Missing reset() requirements in unique_ptr specialization Yes
2083(i) C++14 [util.smartptr.weak] const-qualification on weak_ptr::owner_before Yes
2315(i) C++14 [util.smartptr.weak] weak_ptr should be movable Yes 2
2316(i) C++14 [util.smartptr.weak.obs] weak_ptr::lock() should be atomic Yes 0
2203(i) C++14 20.5.4 [allocator.adaptor.members] scoped_allocator_adaptor uses wrong argument types for piecewise construction Yes
2314(i) C++14 21.2.1 [intseq.general] apply() should return decltype(auto) and use decay_t before tuple_size Yes 0
2346(i) C++14 21.3.4 [meta.help] integral_constant's member functions should be marked noexcept Yes 0
2015(i) C++14 21.3.5 [meta.unary] Incorrect pre-conditions for some type traits Yes
2247(i) C++14 [meta.unary.cat] Type traits and std::nullptr_t Yes
2049(i) C++14 [meta.unary.prop] is_destructible is underspecified Yes
2196(i) C++14 [meta.unary.prop] Specification of is_*[copy/move]_[constructible/assignable] unclear for non-referencable types Yes
2197(i) C++14 [meta.unary.prop] Specification of is_[un]signed unclear for non-arithmetic types Yes
2298(i) C++14 [meta.unary.prop] [CD] is_nothrow_constructible is always false because of create<> Yes
2317(i) C++14 21.3.6 [meta.unary.prop.query] The type property queries should be UnaryTypeTraits returning size_t Yes 0
2141(i) C++14 [meta.trans.other] common_type trait produces reference types Yes
2275(i) C++14 22.4.5 [tuple.creation] [CD] Why is forward_as_tuple not constexpr? Yes
2301(i) C++14 22.4.5 [tuple.creation] Why is std::tie not constexpr? Yes 2
2313(i) C++14 22.4.7 [tuple.helper] tuple_size should always derive from integral_constant<size_t, N> Yes 2
2048(i) C++14 22.10 [function.objects] Unnecessary mem_fn overloads Yes
2149(i) C++14 22.10 [function.objects] Concerns about 20.8/5 Yes
2010(i) C++14 [func.bind.isbind] is_* traits for binding operations can't be meaningfully specialized Yes
2021(i) C++14 [func.bind.bind] Further incorrect usages of result_of Yes
2132(i) C++14 [func.wrap.func.con] std::function ambiguity Yes 2
2148(i) C++14 22.10.19 [unord.hash] Hashing enums should be supported directly by std::hash Yes
2144(i) C++14 22.11 [type.index] Missing noexcept specification in type_index Yes
2064(i) C++14 23.4.3 [basic.string] More noexcept issues in basic_string Yes
2268(i) C++14 23.4.3 [basic.string] Setting a default argument in the declaration of a member function assign of std::basic_string Yes
2003(i) C++14 [string.require] String exception inconsistency in erase. Yes 0
2069(i) C++14 [string.cons] Inconsistent exception spec for basic_string move constructor Yes
2235(i) C++14 [string.cons] Undefined behavior without proper requirements on basic_string constructors Yes
2207(i) C++14 [string.access] basic_string::at should not have a Requires clause Yes
2011(i) C++14 [string.io] Unexpected output required of strings Yes
2009(i) C++14 23.4.5 [string.conversions] Reporting out-of-bound values on numeric string conversions Yes
2193(i) C++14 24 [containers] Default constructors for standard library containers are explicit Yes 1
2177(i) C++14 24.2.2 [container.requirements.general] Requirements on Copy/MoveInsertable Yes
2182(i) C++14 24.2.2 [container.requirements.general] Container::[const_]reference types are misleadingly specified Yes 0
2308(i) C++14 24.2.2 [container.requirements.general] Clarify container destructor requirements w.r.t. std::array Yes 0
2320(i) C++14 24.2.2 [container.requirements.general] select_on_container_copy_construction() takes allocators, not containers Yes 0
2105(i) C++14 24.2.2 [container.requirements.general] Inconsistent requirements on const_iterator's value_type Yes
2211(i) C++14 24.2.2 [container.requirements.general] Replace ambiguous use of "Allocator" in container requirements Yes
2257(i) C++14 24.2.2 [container.requirements.general] Simplify container requirements with the new algorithms Yes
2200(i) C++14 24.2.3 [container.requirements.dataraces] Data race avoidance for all containers, not only for sequences Yes
2231(i) C++14 24.2.4 [sequence.reqmts] DR 704 removes complexity guarantee for clear() Yes
2322(i) C++14 24.2.7 [associative.reqmts] Associative(initializer_list, stuff) constructors are underspecified Yes 0
1214(i) C++14 24.2.7 [associative.reqmts] Insufficient/inconsistent key immutability requirements for associative containers Yes
2258(i) C++14 24.2.7 [associative.reqmts] a.erase(q1, q2) unable to directly return q2 Yes 0
2299(i) C++14 24.2.7 [associative.reqmts] [CD] Effects of inaccessible key_compare::is_transparent type are not clear Yes 1
2304(i) C++14 24.2.8 [unord.req] Complexity of count in unordered associative containers Yes 0
2356(i) C++14 24.2.8 [unord.req] Stability of erasure in unordered associative containers Yes 2
2209(i) C++14 24.3 [sequences] assign() overspecified for sequence containers Yes
2210(i) C++14 24.3 [sequences] Missing allocator-extended constructor for allocator-aware containers Yes
2045(i) C++14 [forward.list.ops] forward_list::merge and forward_list::splice_after with unequal allocators Yes
2123(i) C++14 [forward.list.ops] merge() allocator requirements for lists versus forward lists Yes
2222(i) C++14 [forward.list.ops] Inconsistency in description of forward_list::splice_after single-element overload Yes
2122(i) C++14 [list.ops] merge() stability for lists versus forward lists Yes
2323(i) C++14 [vector.capacity] vector::resize(n, t)'s specification should be simplified Yes 0
2033(i) C++14 [vector.capacity] Preconditions of reserve, shrink_to_fit, and resize functions Yes
2252(i) C++14 [vector.modifiers] Strong guarantee on vector::push_back() still broken with C++11? Yes
2187(i) C++14 24.3.13 [vector.bool] vector<bool> is missing emplace and emplace_back member functions Yes
2300(i) C++14 24.4.4 [map] [CD] Redundant sections for map and multimap members should be removed Yes
2005(i) C++14 [map.modifiers] unordered_map::insert(T&&) protection should apply to map too Yes
2050(i) C++14 24.5 [unord] Unordered associative containers do not use allocator_traits to define member types Yes
2194(i) C++14 24.6 [container.adaptors] Impossible container requirements for adaptor types Yes
2061(i) C++14 25.2 [iterator.synopsis] make_move_iterator and arrays Yes
2128(i) C++14 25.2 [iterator.synopsis] Absence of global functions cbegin/cend Yes
2285(i) C++14 25.5.1 [reverse.iterators] make_reverse_iterator Yes
2360(i) C++14 [reverse.iterator] reverse_iterator::operator*() is unimplementable Yes 1
2188(i) C++14 [reverse.iter.elem] Reverse iterator does not fully support targets that overload operator& Yes 1
2324(i) C++14 [back.insert.iter.ops] Insert iterator constructors should use addressof() Yes 0
2280(i) C++14 25.7 [iterator.range] begin/end for arrays should be constexpr and noexcept Yes
2150(i) C++14 27.6.8 [alg.find.end] Unclear specification of find_end Yes
2039(i) C++14 27.7.1 [alg.copy] Issues with std::reverse and std::copy_if Yes
2110(i) C++14 27.7.8 [alg.remove] remove can't swap but note says it might Yes
2074(i) C++14 27.7.10 [alg.reverse] Off by one error in std::reverse_copy Yes
2339(i) C++14 27.8.3 [alg.nth.element] Wording issue in nth_element Yes 0
2163(i) C++14 27.8.3 [alg.nth.element] nth_element requires inconsistent post-conditions Yes
2357(i) C++14 27.8.5 [alg.partitions] Remaining "Assignable" requirement Yes 0
2350(i) C++14 27.8.9 [alg.min.max] min, max, and minmax should be constexpr Yes 1
2180(i) C++14 [rand.util.seedseq] Exceptions from std::seed_seq operations Yes
2058(i) C++14 28.6 [numarray] valarray and begin/end Yes
2071(i) C++14 [valarray.assign] std::valarray move-assignment Yes
2086(i) C++14 28.7 [c.math] Overly generic type support for math functions Yes
2278(i) C++14 29.2 [time.syn] User-defined literals for Standard Library types Yes
2094(i) C++14 29.5.2 [time.duration.cons] duration conversion overflow shouldn't participate in overload resolution Yes
2293(i) C++14 [facet.num.put.virtuals] Wrong facet used by num_put::do_put Yes 0
2028(i) C++14 [locale.messages] messages_base::catalog overspecified Yes
2087(i) C++14 31.5 [iostreams.base] iostream_category() and noexcept Yes
2143(i) C++14 31.5.2 [ios.base] ios_base::xalloc should be thread-safe Yes
2085(i) C++14 [istream.unformatted] Wrong description of effect 1 of basic_istream::ignore Yes
2341(i) C++14 [ostream.seeks] Inconsistency between basic_ostream::seekp(pos) and basic_ostream::seekp(off, dir) Yes 0
2272(i) C++14 31.7.9 [quoted.manip] quoted should use char_traits::eq for character comparison Yes
2344(i) C++14 31.7.9 [quoted.manip] quoted()'s interaction with padding is unclear Yes 1
2329(i) C++14 32.3 [re.syn] regex_match()/regex_search() with match_results should forbid temporary strings Yes 2
2053(i) C++14 32.4 [re.const] Errors in regex bitmask types Yes
2359(i) C++14 32.4.2 [re.synopt] How does regex_constants::nosubs affect basic_regex::mark_count()? Yes 0
2330(i) C++14 32.4.2 [re.synopt] regex("meow", regex::icase) is technically forbidden but should be permitted Yes 0
1450(i) C++14 32.4.3 [re.matchflag] Contradiction in regex_constants Yes 3
2018(i) C++14 32.6 [re.traits] [CD] regex_traits::isctype Returns clause is wrong Yes
2271(i) C++14 32.6 [re.traits] regex_traits::lookup_classname specification unclear Yes
2306(i) C++14 32.9 [re.results] match_results::reference should be value_type&, not const value_type& Yes 4
2205(i) C++14 32.10.2 [re.alg.match] Problematic postconditions of regex_match and regex_search Yes 0
2213(i) C++14 32.10.4 [re.alg.replace] Return value of std::regex_replace Yes 0
2332(i) C++14 32.11 [re.iter] regex_iterator/regex_token_iterator should forbid temporary regexes Yes 2
2130(i) C++14 33.5.4 [atomics.order] Missing ordering constraints Yes
2138(i) C++14 33.5.10 [atomics.flag] atomic_flag::clear should not accept memory_order_consume Yes
2159(i) C++14 33.5.10 [atomics.flag] atomic_flag initialization Yes
2091(i) C++14 [thread.timedmutex.requirements] Misplaced effect in m.try_lock_for() Yes
2288(i) C++14 [thread.sharedmutex.requirements] Inconsistent requirements for shared mutexes Yes
2104(i) C++14 [thread.lock.unique] unique_lock move-assignment should not be noexcept Yes
2080(i) C++14 33.6.7 [thread.once] Specify when once_flag becomes invalid Yes
2140(i) C++14 33.7 [thread.condition] Meaning of notify_all_at_thread_exit synchronization requirement? Yes
2190(i) C++14 33.7 [thread.condition] Condition variable specification Yes
2093(i) C++14 33.7.4 [thread.condition.condvar] Throws clause of condition_variable::wait with predicate Yes
2135(i) C++14 33.7.4 [thread.condition.condvar] Unclear requirement for exceptions thrown in condition_variable::wait() Yes
2092(i) C++14 33.7.5 [thread.condition.condvarany] Vague Wording for condition_variable_any Yes
2056(i) C++14 33.10.1 [futures.overview] future_errc enums start with value 0 (invalid value for broken_promise) Yes
2102(i) C++14 33.10.1 [futures.overview] Why is std::launch an implementation-defined type? Yes
2098(i) C++14 33.10.6 [futures.promise] Minor Inconsistency between promise::set_value and promise::set_value_at_thread_exit Yes
2096(i) C++14 33.10.7 [futures.unique.future] Incorrect constraints of future::get in regard to MoveAssignable Yes
2185(i) C++14 33.10.7 [futures.unique.future] Missing throws clause for future/shared_future::wait_for/wait_until Yes
2186(i) C++14 33.10.9 [futures.async] Incomplete action on async/launch::deferred Yes
2078(i) C++14 33.10.9 [futures.async] Throw specification of async() incomplete Yes
2100(i) C++14 33.10.9 [futures.async] timed waiting functions cannot timeout if launch::async policy used Yes
2120(i) C++14 33.10.9 [futures.async] What should async do if neither 'async' nor 'deferred' is set in policy? Yes
2067(i) C++14 33.10.10 [futures.task] packaged_task should have deleted copy c'tor with const parameter Yes
2097(i) C++14 [futures.task.members] packaged_task constructors should be constrained Yes
2142(i) C++14 [futures.task.members] packaged_task::operator() synchronization too broad? Yes
2175(i) C++14 99 [depr.conversions.string] wstring_convert and wbuffer_convert validity Yes
2176(i) C++14 99 [depr.conversions.string] Special members for wstring_convert and wbuffer_convert Yes
2174(i) C++14 99 [depr.conversions.string] wstring_convert::converted() should be noexcept Yes
2229(i) C++14 99 [depr.locale.stdcvt] Standard code conversion facets underspecified Yes
2172(i) C++14 99 [depr.util.smartptr.shared.atomic] Does atomic_compare_exchange_* accept v == nullptr arguments? Yes

C++11 (322 issues)

Issue Status Section Title Proposed Resolution Priority Duplicates
1354(i) C++11 3.15 [defns.deadlock] The definition of deadlock excludes cases involving a single thread Yes
1195(i) C++11 16 [library] "Diagnostic required" wording is insufficient to prevent UB Yes
1349(i) C++11 16 [library] swap should not throw Yes
997(i) C++11 [structure.specifications] "Effects: Equivalent to" is underspecified Yes
1065(i) C++11 [contents] Allow inline namespaces within namespace std for implementations Yes
1264(i) C++11 [compliance] quick_exit support for freestanding implementations Yes
1360(i) C++11 [compliance] Add <atomic> to free-standing implementations Yes
724(i) C++11 [utility.arg.requirements] DefaultConstructible is not defined Yes
753(i) C++11 [utility.arg.requirements] Move constructor in draft Yes
1309(i) C++11 [utility.arg.requirements] Missing expressions for Move/CopyConstructible Yes
1332(i) C++11 [hash.requirements] Let Hash objects throw! Yes
752(i) C++11 [allocator.requirements] Allocator complexity requirement Yes
1157(i) C++11 [namespace.std] Local types can now instantiate templates Yes
2014(i) C++11 [macro.names] More restrictions on macro names Yes
1004(i) C++11 [res.on.functions] Clarify "throws an exception" Yes
1362(i) C++11 [res.on.arguments] Description of binding to rvalue-references should use the new 'xvalue' vocabulary Yes
1204(i) C++11 [res.on.arguments] Global permission to move Yes
1095(i) C++11 [res.on.objects] Shared objects and the library wording unclear Yes
1178(i) C++11 [res.on.headers] Header dependencies Yes
1066(i) C++11 17 [support] Use [[noreturn]] attribute in the library Yes
1097(i) C++11 17.2 [support.types] #define __STDCPP_THREADS Yes
1363(i) C++11 17.2 [support.types] offsetof should be marked noexcept Yes
993(i) C++11 17.5 [support.start.term] _Exit needs better specification Yes
1144(i) C++11 17.5 [support.start.term] "thread safe" is undefined Yes
1006(i) C++11 17.6.3 [new.delete] operator delete in garbage collected implementation Yes
1524(i) C++11 [new.delete.dataraces] Allocation functions are missing happens-before requirements and guarantees Yes
994(i) C++11 [new.handler] quick_exit should terminate well-defined Yes
471(i) C++11 17.9.3 [exception] result of what() implementation-defined Yes
1130(i) C++11 17.9.7 [propagation] copy_exception name misleading Yes
819(i) C++11 17.9.8 [except.nested] rethrow_if_nested Yes
1136(i) C++11 17.9.8 [except.nested] Incomplete specification of nested_exception::rethrow_nested() Yes
1216(i) C++11 17.9.8 [except.nested] LWG 1066 Incomplete? Yes
1370(i) C++11 17.9.8 [except.nested] throw_with_nested should not use perfect forwarding Yes
894(i) C++11 17.13 [support.runtime] longjmp and destructors Yes
1237(i) C++11 19.5 [syserr] Constrained error_code/error_condition members Yes
890(i) C++11 19.5.3 [syserr.errcat] Improving <system_error> initialization Yes
1372(i) C++11 [syserr.errcat.objects] Adopt recommended practice for standard error categories Yes
1103(i) C++11 [syserr.syserr.members] system_error constructor postcondition overly strict Yes
1073(i) C++11 20.2 [memory] Declaration of allocator_arg should be constexpr Yes
1401(i) C++11 20.2 [memory] Provide support for unique_ptr<T> == nullptr Yes
1402(i) C++11 20.2 [memory] nullptr constructors for smart pointers should be constexpr Yes
1404(i) C++11 20.2.3 [pointer.traits] pointer_traits should have a size_type member Yes
1403(i) C++11 20.2.7 [allocator.tag] Inconsistent definitions for allocator_arg Yes
1285(i) C++11 [allocator.traits.members] allocator_traits call to new Yes
1286(i) C++11 [allocator.traits.members] allocator_traits::select_on_container_copy_construction type-o Yes
970(i) C++11 20.2.11 [specialized.addressof] addressof overload unneeded Yes
1193(i) C++11 [unique.ptr.dltr] default_delete cannot be instantiated with incomplete types Yes
854(i) C++11 [unique.ptr.dltr.dflt] default_delete converting constructor underspecified Yes
1517(i) C++11 [unique.ptr.dltr.dflt] default_delete's default constructor should be trivial Yes
938(i) C++11 [unique.ptr.dltr.dflt1] default_delete<T[]>::operator() should only accept T* Yes
1303(i) C++11 [unique.ptr.single] shared_ptr, unique_ptr, and rvalue references v2 Yes
1021(i) C++11 [unique.ptr.single.asgn] Allow nullptr_t assignments to unique_ptr Yes
998(i) C++11 [unique.ptr.single.modifiers] Smart pointer referencing its owner Yes
821(i) C++11 [unique.ptr.runtime.modifiers] Minor cleanup : unique_ptr Yes
758(i) C++11 [util.smartptr.shared] shared_ptr and nullptr Yes
896(i) C++11 [util.smartptr.shared] Library thread safety issue Yes
881(i) C++11 [util.smartptr.shared.const] shared_ptr conversion issue Yes
925(i) C++11 [util.smartptr.shared.const] shared_ptr's explicit conversion from unique_ptr Yes
899(i) C++11 [util.smartptr.shared.dest] Adjusting shared_ptr for nullptr_t Yes
711(i) C++11 [util.smartptr.shared.obs] Contradiction in empty shared_ptr Yes
1262(i) C++11 [util.smartptr.shared.cmp] std::less<std::shared_ptr<T>> is underspecified Yes
1256(i) C++11 [util.smartptr.weak] weak_ptr comparison functions should be removed Yes
1231(i) C++11 [util.smartptr.weak.obs] weak_ptr comparisons incompletely resolved Yes
949(i) C++11 [util.smartptr.ownerless] owner_less Yes
1316(i) C++11 20.5 [allocator.adaptor] scoped_allocator_adaptor operator== has no definition Yes
1114(i) C++11 21 [meta] Type traits underspecified Yes
1019(i) C++11 21.3.4 [meta.help] Make integral_constant objects useable in integral-constant-expressions Yes
931(i) C++11 [meta.unary.prop] type trait extent<T, I> Yes
1131(i) C++11 [meta.unary.prop] C++0x does not need alignment_of Yes
975(i) C++11 21.3.7 [meta.rel] is_convertible cannot be instantiated for non-convertible types Yes
1187(i) C++11 [meta.trans.other] std::decay Yes
921(i) C++11 21.4.3 [ratio.ratio] Rational Arithmetic should use template aliases Yes
1388(i) C++11 21.4.3 [ratio.ratio] LWG 1281 incorrectly accepted Yes
948(i) C++11 21.4.4 [ratio.arithmetic] ratio arithmetic tweak Yes
1255(i) C++11 22.2 [utility] declval should be added to the library Yes
939(i) C++11 22.2.4 [forward] Problem with std::identity and reference-to-temporaries Yes
296(i) C++11 22.3 [pairs] Missing descriptions and requirements of pair operators Yes
811(i) C++11 22.3 [pairs] pair of pointers no longer works with literal 0 Yes
885(i) C++11 22.3 [pairs] pair assignment Yes
886(i) C++11 [tuple.cnstr] tuple construction Yes
1384(i) C++11 22.4.5 [tuple.creation] Function pack_arguments is poorly named Yes
1385(i) C++11 22.4.5 [tuple.creation] tuple_cat should be a single variadic signature Yes
1386(i) C++11 22.4.5 [tuple.creation] pack_arguments overly complex Yes
1118(i) C++11 22.4.7 [tuple.helper] tuple query APIs do not support cv-qualification Yes
1191(i) C++11 22.4.8 [tuple.elem] tuple get API should respect rvalues Yes
1335(i) C++11 22.4.9 [tuple.rel] Insufficient requirements for tuple::operator<() Yes
853(i) C++11 22.9.2 [template.bitset] to_string needs updating with zero and one Yes
1113(i) C++11 22.9.2 [template.bitset] bitset::to_string could be simplified Yes
1227(i) C++11 22.9.2 [template.bitset] <bitset> synopsis overspecified Yes
1250(i) C++11 22.9.2 [template.bitset] <bitset> still overspecified Yes
1325(i) C++11 [bitset.cons] bitset Yes
907(i) C++11 [bitset.members] Bitset's immutable element retrieval is inconsistently defined Yes
1294(i) C++11 22.10.4 [func.require] Difference between callable wrapper and forwarding call wrapper unclear Yes
1295(i) C++11 22.10.4 [func.require] Contradictory call wrapper requirements Yes
1520(i) C++11 22.10.4 [func.require] INVOKE on member data pointer with too many arguments Yes
987(i) C++11 22.10.6 [refwrap] reference_wrapper and function types Yes
2017(i) C++11 22.10.6 [refwrap] std::reference_wrapper makes incorrect usage of std::result_of Yes
2022(i) C++11 22.10.6 [refwrap] reference_wrapper<T>::result_type is underspecified Yes
688(i) C++11 [refwrap.const] reference_wrapper, cref unsafe, allow binding to rvalues Yes
1071(i) C++11 [func.bind.isbind] is_bind_expression should derive from integral_constant<bool> Yes
817(i) C++11 [func.bind.bind] bind needs to be moved Yes
920(i) C++11 22.10.16 [func.memfn] Ref-qualification support in the library Yes 1230
1070(i) C++11 [func.wrap.func] Ambiguous move overloads in function Yes
1240(i) C++11 [func.wrap.func] Deleted comparison functions of std::function not needed Yes
1399(i) C++11 [func.wrap.func] function does not need an explicit default constructor Yes
1287(i) C++11 [func.wrap.func.con] std::function requires CopyConstructible target object Yes
1288(i) C++11 [func.wrap.func.con] std::function assignment from rvalues Yes
1292(i) C++11 [func.wrap.func.con] std::function should support all callable types Yes
1400(i) C++11 [func.wrap.func.con] FCD function does not need an explicit default constructor Yes
1333(i) C++11 [func.wrap.func.inv] Missing forwarding during std::function invocation Yes
978(i) C++11 22.10.19 [unord.hash] Hashing smart pointers Yes
1182(i) C++11 22.10.19 [unord.hash] Unfortunate hash dependencies Yes
1245(i) C++11 22.10.19 [unord.hash] std::hash<string> & co Yes
1170(i) C++11 23.1 [strings.general] String char-like types no longer PODs Yes
1414(i) C++11 [char.traits.specializations.char16.t] Fixing remaining dead links to POS_T and OFF_T Yes 1444
876(i) C++11 23.4.3 [basic.string] basic_string access operations should give stronger guarantees Yes
847(i) C++11 [string.require] string exception safety guarantees Yes
1192(i) C++11 [string.iterators] basic_string missing definitions for cbegin / cend / crbegin / crend Yes
1323(i) C++11 [string.replace] basic_string::replace should use const_iterator Yes
1138(i) C++11 [string.op.plus] Unusual return value for operator+ Yes
1261(i) C++11 23.4.5 [string.conversions] Insufficent overloads for to_string / to_wstring Yes
774(i) C++11 24 [containers] Member swap undefined for most containers Yes
868(i) C++11 24 [containers] Default construction and value-initialization Yes
883(i) C++11 24 [containers] swap circular definition Yes
704(i) C++11 24.2 [container.requirements] MoveAssignable requirement for container value type overly strict Yes
861(i) C++11 24.2 [container.requirements] Incomplete specification of EqualityComparable for std::forward_list Yes
1416(i) C++11 24.2 [container.requirements] forward_list::erase_after should not be allowed to throw Yes
1034(i) C++11 24.2.2 [container.requirements.general] Clarify generality of Container Requirement tables Yes
1319(i) C++11 24.2.2 [container.requirements.general] Containers should require an iterator that is at least a Forward Iterator Yes
149(i) C++11 24.2.4 [sequence.reqmts] Insert should return iterator to first element inserted Yes
1037(i) C++11 24.2.4 [sequence.reqmts] Unclear status of match_results as library container Yes
1038(i) C++11 24.2.4 [sequence.reqmts] Sequence requirement table needs to reference several new containers Yes
1039(i) C++11 24.2.4 [sequence.reqmts] Sequence container back function should also support const_iterator Yes
1234(i) C++11 24.2.4 [sequence.reqmts] "Do the right thing" and NULL Yes
982(i) C++11 24.2.7 [associative.reqmts] Wrong complexity for initializer_list assignment in Table 85 Yes
1040(i) C++11 24.2.7 [associative.reqmts] Clarify possible sameness of associative container's iterator and const_iterator Yes
1253(i) C++11 24.2.7 [associative.reqmts] invalidation of iterators and emplace vs. insert inconsistence in assoc. containers Yes
869(i) C++11 24.2.8 [unord.req] Bucket (local) iterators and iterating past end Yes
870(i) C++11 24.2.8 [unord.req] Do unordered containers not support function pointers for predicate/hasher? Yes
981(i) C++11 24.2.8 [unord.req] Unordered container requirements should add initializer_list support Yes
1189(i) C++11 24.2.8 [unord.req] Awkward interface for changing the number of buckets in an unordered associative container Yes
1197(i) C++11 24.2.8 [unord.req] Can unordered containers have bucket_count() == 0? Yes
1306(i) C++11 24.3.8 [array] pointer and const_pointer for <array> Yes
1417(i) C++11 [array.zero] front/back on a zero-sized array should be undefined Yes
1418(i) C++11 [deque.capacity] Effects of resize(size()) on a deque Yes
878(i) C++11 24.3.10 [forward.list] forward_list preconditions Yes
1276(i) C++11 24.3.10 [forward.list] forwardlist missing allocator constructors Yes
2042(i) C++11 [forward.list.iter] Comparing forward_list::before_begin() to forward_list::end() Yes
1278(i) C++11 [forward.list.modifiers] Inconsistent return values for forward_list::insert_after Yes
1340(i) C++11 [forward.list.modifiers] Why does forward_list::resize take the object to be copied by value? Yes
898(i) C++11 [forward.list.ops] Small contradiction in n2723 to forward to committee Yes
1133(i) C++11 [forward.list.ops] Does N2844 break current specification of list::splice? Yes
1310(i) C++11 [forward.list.ops] forward_list splice_after from lvalues Yes
1420(i) C++11 [list.capacity] Effects of resize(size()) on a list Yes
1207(i) C++11 [list.ops] Underspecified std::list operations? Yes
1215(i) C++11 [list.ops] list::merge with unequal allocators Yes
1525(i) C++11 [vector.capacity] Effects of resize(size()) on a vector Yes
1312(i) C++11 [vector.data] vector::data no longer returns a raw pointer Yes
814(i) C++11 24.3.13 [vector.bool] vector<bool>::swap(reference, reference) not defined Yes
1254(i) C++11 24.3.13 [vector.bool] Misleading sentence in vector<bool>::flip Yes
1284(i) C++11 24.3.13 [vector.bool] vector<bool> initializer_list constructor missing an allocator argument Yes
1423(i) C++11 24.4.4 [map] map constructor accepting an allocator as single parameter should be explicit Yes
2007(i) C++11 [map.access] Incorrect specification of return value for map<>::at() Yes
1424(i) C++11 24.4.5 [multimap] multimap constructor accepting an allocator as a single parameter should be explicit Yes
1425(i) C++11 24.4.6 [set] set constructor accepting an allocator as a single parameter should be explicit Yes
1426(i) C++11 24.4.7 [multiset] multiset constructor accepting an allocator as a single parameter should be explicit Yes
676(i) C++11 24.5 [unord] Moving the unordered containers Yes
1427(i) C++11 24.5.4 [unord.map] unordered_map constructor accepting an allocator as a single parameter should be explicit Yes
1519(i) C++11 24.5.4 [unord.map] bucketsize() const only for unordered set Yes
1428(i) C++11 24.5.5 [unord.multimap] unordered_multimap constructor accepting an allocator as a single parameter should be explicit Yes
1429(i) C++11 24.5.6 [unord.set] unordered_set constructor accepting an allocator as a single parameter should be explicit Yes
1430(i) C++11 24.5.7 [unord.multiset] unordered_multiset constructor accepting an allocator as a single parameter should be explicit Yes
1199(i) C++11 24.6 [container.adaptors] Missing extended copy constructor in container adaptors Yes
1194(i) C++11 24.6 [container.adaptors] Unintended queue constructor Yes
1198(i) C++11 24.6 [container.adaptors] Container adaptor swap: member or non-member? Yes
765(i) C++11 25.3.4 [iterator.concepts] More on iterator validity Yes
1079(i) C++11 [random.access.iterators] UK-265: RandomAccessIterator's operator- has nonsensical effects clause Yes
1011(i) C++11 25.4.3 [iterator.operations] next/prev wrong iterator type Yes
1012(i) C++11 [reverse.iter.cons] reverse_iterator default ctor should value initialize Yes
1334(i) C++11 [back.insert.iter.ops] Insert iterators are broken for some proxy containers compared to C++03 Yes
872(i) C++11 [move.iter.elem] move_iterator::operator[] has wrong return type Yes
788(i) C++11 25.6.2 [istream.iterator] Ambiguity in [istream.iterator] Yes
838(i) C++11 25.6.2 [istream.iterator] Can an end-of-stream iterator become a non-end-of-stream one? Yes
1280(i) C++11 [istream.iterator.cons] Initialization of stream iterators Yes
659(i) C++11 25.6.4 [istreambuf.iterator] istreambuf_iterator should have an operator->() Yes
1126(i) C++11 [istreambuf.iterator.ops] istreambuff_iterator::equal needs a const & parameter Yes
1205(i) C++11 27 [algorithms] Some algorithms could more clearly document their handling of empty ranges Yes
1110(i) C++11 27.6.5 [alg.foreach] Is for_each overconstrained? Yes
1431(i) C++11 27.6.14 [alg.is.permutation] is_permutation must be more restrictive Yes
1338(i) C++11 27.6.15 [alg.search] LWG 1205 incorrectly applied Yes
1206(i) C++11 27.7.2 [alg.move] Incorrect requires for move_backward and copy_backward Yes
865(i) C++11 27.7.6 [alg.fill] More algorithms that throw away information Yes
1241(i) C++11 27.7.9 [alg.unique] unique_copy needs to require EquivalenceRelation Yes
1432(i) C++11 27.7.13 [alg.random.shuffle] random_shuffle signatures are inconsistent Yes 1433
556(i) C++11 27.8 [alg.sorting] Is Compare a BinaryPredicate? Yes
498(i) C++11 27.8.5 [alg.partitions] Requirements for partition() and stable_partition() too strong Yes
780(i) C++11 27.8.6 [alg.merge] std::merge() specification incorrect/insufficient Yes
539(i) C++11 27.10.7 [partial.sum] partial_sum and adjacent_difference should mention requirements Yes
871(i) C++11 27.10.13 [numeric.iota] Iota's requirements on T are too strong Yes
866(i) C++11 27.11 [specialized.algorithms] Qualification of placement new-expressions Yes
999(i) C++11 27.11 [specialized.algorithms] Taking the address of a function Yes
1339(i) C++11 27.11.7 [uninitialized.fill] uninitialized_fill_n should return the end of its range Yes
860(i) C++11 28 [numerics] Floating-Point State Yes
1435(i) C++11 28.4.7 [complex.value.ops] Unclear returns specifications for C99 complex number functions Yes
1137(i) C++11 28.4.10 [cmplx.over] Return type of conj and proj Yes
1522(i) C++11 28.4.10 [cmplx.over] conj specification is now nonsense Yes
1436(i) C++11 28.5.4 [rand.eng] Random number engine constructor concerns Yes
1437(i) C++11 [rand.eng.mers] Mersenne twister meaningless for word sizes less than two Yes
1438(i) C++11 [rand.adapt.disc] No definition for base() Yes
1439(i) C++11 [rand.dist.samp.pconst] Return from densities() functions? Yes
1440(i) C++11 [rand.dist.samp.plinear] Incorrect specification for piecewise_linear_distribution Yes
630(i) C++11 [valarray.cons] arrays of valarray Yes
1208(i) C++11 [valarray.cons] valarray initializer_list constructor has incorrect effects Yes
430(i) C++11 [valarray.sub] valarray subset operations Yes
1134(i) C++11 28.7 [c.math] Redundant specification of <stdint.h>, <fenv.h>, <tgmath.h>, and maybe <complex.h> Yes
1441(i) C++11 28.7 [c.math] Floating-point test functions are incorrectly specified Yes
954(i) C++11 29.3 [time.clock.req] Various threading bugs #4 Yes
956(i) C++11 29.3 [time.clock.req] Various threading bugs #6 Yes
951(i) C++11 29.4.1 [time.traits.is.fp] Various threading bugs #1 Yes
934(i) C++11 29.5 [time.duration] duration is missing operator% Yes
1171(i) C++11 29.5 [time.duration] duration types should be literal Yes
1177(i) C++11 29.5 [time.duration] Improve "diagnostic required" wording Yes
974(i) C++11 29.5.2 [time.duration.cons] duration<double> should not implicitly convert to duration<int> Yes
1271(i) C++11 29.5.6 [time.duration.nonmember] CR undefined in duration operators Yes
2004(i) C++11 29.5.6 [time.duration.nonmember] duration::operator* has template parameters in funny order Yes
2020(i) C++11 29.5.6 [time.duration.nonmember] Time utility arithmetic constexpr functions have invalid effects Yes
957(i) C++11 29.7.2 [time.clock.system] Various threading bugs #7 Yes
1298(i) C++11 30.2 [locale.syn] Missing specialization of ctype_byname<char> Yes
2019(i) C++11 [classification] isblank not supported by std::locale Yes
473(i) C++11 [locale.ctype] underspecified ctype calls Yes
427(i) C++11 [facet.num.get.virtuals] Stage 2 and rationale of DR 221 Yes
2041(i) C++11 [facet.num.get.virtuals] Stage 2 accumulate incompatibilty Yes
671(i) C++11 [facet.num.put.virtuals] precision of hexfloat Yes
1152(i) C++11 [facet.num.put.virtuals] Expressions parsed differently than intended Yes
836(i) C++11 [locale.money.get.virtuals] Effects of money_base::space and money_base::none on money_get Yes 670
1257(i) C++11 31.5 [iostreams.base] Header <ios> still contains a concept_map Yes
1123(i) C++11 [ios.init] No requirement that standard streams be flushed Yes
1249(i) C++11 [basic.ios.cons] basic_ios default ctor Yes
835(i) C++11 [basic.ios.members] Tying two streams together (correction to DR 581) Yes
1104(i) C++11 [basic.ios.members] basic_ios::move should accept lvalues Yes
1183(i) C++11 [basic.ios.members] basic_ios::set_rdbuf may break class invariants Yes
1094(i) C++11 [iostate.flags] Replace "unspecified-bool-type" by "explicit operator bool() const" in I/O library Yes
565(i) C++11 [streambuf.virt.put] xsputn inefficient Yes
911(i) C++11 31.7.5 [input.streams] I/O streams and move/swap semantic Yes
419(i) C++11 [istream.sentry] istream extractors not setting failbit if eofbit is already set Yes
696(i) C++11 [istream.formatted.arithmetic] istream::operator>>(int&) broken Yes
810(i) C++11 31.7.8 [ext.manip] Missing traits dependencies in operational semantics of extended manipulators Yes
1299(i) C++11 31.7.8 [ext.manip] Confusing typo in specification for get_time Yes
1448(i) C++11 [stringbuf.members] Concerns about basic_stringbuf::str(basic_string) postconditions Yes
564(i) C++11 [stringbuf.virtuals] stringbuf seekpos underspecified Yes
1449(i) C++11 31.8.3 [istringstream] Incomplete specification of header <cinttypes> Yes
900(i) C++11 31.10.4 [ifstream] Stream move-assignment Yes
984(i) C++11 31.13 [c.files] Does <cinttypes> have macro guards? Yes
1337(i) C++11 32.6 [re.traits] Swapped arguments in regex_traits::isctype Yes
723(i) C++11 32.7 [re.regex] basic_regex should be moveable Yes
2029(i) C++11 32.7 [re.regex] Missing 'noexcept' on basic_regex move-assignment operator Yes
1014(i) C++11 32.7.2 [re.regex.construct] basic_regex should be created/assigned from initializer lists Yes
2001(i) C++11 32.7.3 [re.regex.assign] Class template basic_regex uses non existent string_type Yes
1180(i) C++11 32.8.2 [re.submatch.members] Missing string_type member typedef in class sub_match Yes
1181(i) C++11 32.8.3 [re.submatch.op] Invalid sub_match comparison operators Yes
1209(i) C++11 32.9.2 [re.results.const] match_results should be moveable Yes
727(i) C++11 32.10.4 [re.alg.replace] regex_replace() doesn't accept basic_strings with custom traits and allocators Yes
909(i) C++11 32.11.2 [re.tokiter] regex_token_iterator should use initializer_list Yes
716(i) C++11 32.12 [re.grammar] Production in [re.grammar] not actually modified Yes
1089(i) C++11 33 [thread] Unify "Throws: Nothing." specifications Yes
1108(i) C++11 33.2.2 [thread.req.exception] thread.req.exception overly constrains implementations Yes
1158(i) C++11 33.2.4 [thread.req.timing] Encouragement to use monotonic clock Yes
1277(i) C++11 [thread.thread.id] std::thread::id should be trivially copyable Yes
891(i) C++11 [thread.thread.constr] std::thread, std::call_once issue Yes
929(i) C++11 [thread.thread.constr] Thread constructor Yes
967(i) C++11 [thread.thread.constr] Various threading bugs #17 Yes
963(i) C++11 [thread.thread.member] Various threading bugs #13 Yes
1033(i) C++11 [thread.thread.member] thread::join() effects? Yes
888(i) C++11 33.4.5 [thread.thread.this] this_thread::yield too strong Yes
1487(i) C++11 33.4.5 [thread.thread.this] Clock related operations exception specifications conflict Yes
1474(i) C++11 [atomics.types.operations] weak compare-and-exchange confusion Yes 1470, 1475, 1476, 1477
1478(i) C++11 [atomics.types.operations] Clarify race conditions in atomics initialization Yes
1479(i) C++11 33.5.11 [atomics.fences] Fence functions should be extern "C" Yes
1480(i) C++11 33.5.11 [atomics.fences] Atomic fences don't have synchronizes with relation Yes
1044(i) C++11 33.6 [thread.mutex] Empty tag types should be constexpr literals Yes
960(i) C++11 33.6.4 [thread.mutex.requirements] Various threading bugs #10 Yes
968(i) C++11 33.6.4 [thread.mutex.requirements] Various threading bugs #18 Yes
1218(i) C++11 33.6.4 [thread.mutex.requirements] mutex destructor synchronization Yes
893(i) C++11 [thread.mutex.class] std::mutex issue Yes 905
1045(i) C++11 [thread.lock.unique.cons] Remove unnecessary preconditions from unique_lock constructor Yes
962(i) C++11 [thread.lock.unique.locking] Various threading bugs #12 Yes
1159(i) C++11 [thread.lock.unique.locking] Unclear spec for resource_deadlock_would_occur Yes 1219
986(i) C++11 33.6.6 [thread.lock.algorithm] Generic try_lock contradiction Yes
1494(i) C++11 [thread.once.callonce] Term "are serialized" not defined Yes
859(i) C++11 33.7 [thread.condition] Monotonic Clock is Conditionally Supported? Yes
1220(i) C++11 33.7 [thread.condition] What does condition_variable wait on? Yes
1222(i) C++11 33.7 [thread.condition] condition_variable incorrect effects for exception safety Yes
1497(i) C++11 33.7 [thread.condition] lock() postcondition can not be generally achieved Yes
857(i) C++11 33.7.4 [thread.condition.condvar] condition_variable::time_wait return bool error prone Yes
965(i) C++11 33.7.4 [thread.condition.condvar] Various threading bugs #15 Yes
1221(i) C++11 33.7.4 [thread.condition.condvar] condition_variable wording Yes
1267(i) C++11 33.7.5 [thread.condition.condvarany] Incorrect wording for condition_variable_any::wait_for Yes
1518(i) C++11 33.10 [futures] Waiting for deferred functions Yes
2031(i) C++11 33.10.7 [futures.unique.future] std::future<>::share() only applies to rvalues Yes
2032(i) C++11 33.10.9 [futures.async] Incorrect synchronization clause of async function Yes
2030(i) C++11 33.10.10 [futures.task] packaged_task::result_type should be removed Yes
1514(i) C++11 [futures.task.members] packaged_task constructors need review Yes
2008(i) C++11 [futures.task.members] Conflicting Error Conditions for packaged_task::operator() Yes
2027(i) C++11 [futures.task.members] Initialization of the stored task of a packaged_task Yes
2000(i) C++11 [futures.task.nonmembers] Missing definition of packaged_task specialization of uses_allocator Yes
943(i) C++11 99 [atomics.types.address] ssize_t undefined Yes
1247(i) C++11 99 [auto.ptr] auto_ptr is overspecified Yes
1516(i) C++11 99 [depr.auto.ptr] No specification for which header contains auto_ptr Yes
1279(i) C++11 99 [depr.base] forbid [u|bi]nary_function specialization Yes
1252(i) C++11 99 [depr.conversions.buffer] wbuffer_convert::state_type inconsistency Yes
991(i) C++11 99 [depr.conversions.string] Provide allocator for wstring_convert Yes
1368(i) C++11 99 [depr.uncaught] Thread safety of std::uncaught_exception() Yes
1030(i) C++11 99 [depr.util.smartptr.shared.atomic] Missing requirements for smart-pointer safety API Yes
1367(i) C++11 99 [exception.unexpected] Deprecate library support for checking dynamic exception specifications Yes
904(i) C++11 99 [func.ret] result_of argument types Yes
1270(i) C++11 99 [func.ret] result_of should be moved to <type_traits> Yes
1381(i) C++11 99 [pair.range] Replace pair's range support by proper range facility Yes
990(i) C++11 99 [time.clock.monotonic] monotonic_clock::is_monotonic must be true Yes
1387(i) C++11 99 [tuple.range] Range support by tuple should be removed Yes
1098(i) C++11 99 [util.dynamic.safety] definition of get_pointer_safety() Yes
1408(i) C++11 99 [util.dynamic.safety] Allow recycling of pointers after undeclare_no_pointers Yes
922(i) C++11 B [implimits] §[func.bind.place] Number of placeholders Yes

CD1 (363 issues)

Issue Status Section Title Proposed Resolution Priority Duplicates
182(i) CD1 16 [library] Ambiguous references to size_t Yes
230(i) CD1 16 [library] Assignable specified without also specifying CopyConstructible Yes
336(i) CD1 16 [library] Clause 17 lack of references to deprecated headers Yes
262(i) CD1 [bitmask.types] Bitmask operator ~ specified incorrectly Yes
229(i) CD1 [contents] Unqualified references of other library entities Yes
310(i) CD1 [headers] Is errno a macro? Yes
456(i) CD1 [headers] Traditional C header files are overspecified Yes
465(i) CD1 [headers] Contents of <ciso646> Yes
672(i) CD1 [utility.arg.requirements] Swappable requirements need updating Yes
258(i) CD1 [allocator.requirements] Missing allocator requirement Yes
274(i) CD1 [allocator.requirements] a missing/impossible allocator requirement Yes
401(i) CD1 [allocator.requirements] incorrect type casts in table 32 in lib.allocator.requirements Yes
402(i) CD1 [allocator.requirements] wrong new expression in [some_]allocator::construct Yes
120(i) CD1 [reserved.names] Can an implementor add specializations? Yes
226(i) CD1 [reserved.names] User supplied specializations or overloads of namespace std function templates Yes
232(i) CD1 [reserved.names] "depends" poorly defined in Yes
422(i) CD1 [reserved.names] explicit specializations of member functions of class templates Yes
294(i) CD1 [macro.names] User defined macros and standard headers Yes
404(i) CD1 [replacement.functions] May a replacement allocation function be declared inline? Yes
611(i) CD1 [res.on.functions] Standard library templates and incomplete types Yes
225(i) CD1 [global.functions] std:: algorithms use of other unqualified algorithms Yes
306(i) CD1 17.2 [support.types] offsetof macro and non-POD types Yes
449(i) CD1 17.2 [support.types] Library Issue 306 Goes Too Far Yes
201(i) CD1 17.3 [support.limits] Numeric limits terminology wrong Yes
559(i) CD1 17.3.5 [numeric.limits] numeric_limits<const T> Yes
497(i) CD1 [numeric.limits.members] meaning of numeric_limits::traps for floating point types Yes
612(i) CD1 [numeric.limits.members] numeric_limits::is_modulo insufficiently defined Yes
184(i) CD1 [numeric.special] numeric_limits<bool> wording problems Yes
613(i) CD1 [numeric.special] max_digits10 missing from numeric_limits Yes
416(i) CD1 17.3.6 [climits.syn] definitions of XXX_MIN and XXX_MAX macros in climits Yes
593(i) CD1 17.4.1 [cstdint.syn] __STDC_CONSTANT_MACROS Yes
206(i) CD1 [new.delete.single] operator new(size_t, nothrow) may become unlinked to ordinary operator new if ordinary version replaced Yes
319(i) CD1 [new.delete.single] Storage allocation wording confuses "Required behavior", "Requires" Yes
298(i) CD1 [new.delete.array] ::operator delete[] requirement incorrect/insufficient Yes
266(i) CD1 17.9.4 [bad.exception] bad_exception::~bad_exception() missing Effects clause Yes
744(i) CD1 17.9.7 [propagation] What is the lifetime of an exception pointed to by an exception_ptr? Yes
746(i) CD1 17.9.7 [propagation] current_exception may fail with bad_alloc Yes
820(i) CD1 17.9.7 [propagation] current_exception()'s interaction with throwing copy ctors Yes
829(i) CD1 17.9.7 [propagation] current_exception wording unclear about exception type Yes
619(i) CD1 17.13 [support.runtime] Longjmp wording problem Yes
551(i) CD1 17.14 [support.c.headers] <ccomplex> Yes
254(i) CD1 19.2 [std.exceptions] Exception types in clause 19 are constructed from std::string Yes
288(i) CD1 19.4 [errno] <cerrno> requirements missing macro EILSEQ Yes
804(i) CD1 19.5 [syserr] Some problems with classes error_code/error_condition Yes
805(i) CD1 19.5 [syserr] posix_error::posix_errno concerns Yes
698(i) CD1 [syserr.syserr.overview] system_error needs const char* constructors Yes
234(i) CD1 [allocator.members] Typos in allocator definition Yes
400(i) CD1 [allocator.members] redundant type cast in lib.allocator.members Yes
578(i) CD1 [allocator.members] purpose of hint to allocator::allocate() Yes
634(i) CD1 [allocator.members] allocator.address() doesn't work for types overloading operator& Yes 350
673(i) CD1 20.3.1 [unique.ptr] unique_ptr update Yes
740(i) CD1 20.3.1 [unique.ptr] Please remove *_ptr<T[N]> Yes
762(i) CD1 20.3.1 [unique.ptr] std::unique_ptr requires complete type? Yes
806(i) CD1 [unique.ptr.single.modifiers] unique_ptr::reset effects incorrect, too permissive Yes
541(i) CD1 [util.smartptr.shared] shared_ptr template assignment and void Yes
674(i) CD1 [util.smartptr.shared] shared_ptr interface changes for consistency with N1856 Yes
710(i) CD1 [util.smartptr.shared] Missing postconditions Yes
813(i) CD1 [util.smartptr.shared] "empty" undefined for shared_ptr Yes
687(i) CD1 [util.smartptr.shared.const] shared_ptr conversion constructor not constrained Yes
575(i) CD1 [util.smartptr.shared.dest] the specification of ~shared_ptr is MT-unfriendly, makes implementation assumptions Yes
540(i) CD1 [util.smartptr.shared.obs] shared_ptr<void>::operator*() Yes
542(i) CD1 [util.smartptr.shared.obs] shared_ptr observers Yes
743(i) CD1 [util.smartptr.shared.spec] rvalue swap for shared_ptr Yes
533(i) CD1 [util.smartptr.getdeleter] typo in Yes
545(i) CD1 [util.smartptr.getdeleter] When is a deleter deleted? Yes
749(i) CD1 [meta.unary.prop] Currently has_nothrow_copy_constructor<T>::value is true if T has 'a' nothrow copy constructor. Yes
705(i) CD1 [meta.trans.other] type-trait decay incompletely specified Yes
856(i) CD1 [meta.trans.other] Removal of aligned_union Yes
312(i) CD1 22 [utilities] Table 27 is missing headers Yes
808(i) CD1 22.2.4 [forward] §[forward] incorrect redundant specification Yes
700(i) CD1 22.2.4 [forward] N1856 defines struct identity Yes
265(i) CD1 22.3 [pairs] std::pair::pair() effects overly restrictive Yes
706(i) CD1 22.3 [pairs] make_pair() should behave as make_tuple() wrt. reference_wrapper() Yes
522(i) CD1 22.4 [tuple] Tuple doesn't define swap Yes
807(i) CD1 [tuple.cnstr] tuple construction should not fail unless its element's construction fails Yes
775(i) CD1 22.4.7 [tuple.helper] Tuple indexing should be unsigned? Yes
693(i) CD1 22.9.2 [template.bitset] std::bitset::all() missing Yes
694(i) CD1 22.9.2 [template.bitset] std::bitset and long long Yes
396(i) CD1 [bitset.cons] what are characters zero and one Yes
457(i) CD1 [bitset.cons] bitset constructor: incorrect number of initialized bits Yes
778(i) CD1 [bitset.cons] std::bitset does not have any constructor taking a string literal Yes 116
186(i) CD1 [bitset.members] bitset::set() second parameter should be bool Yes
434(i) CD1 [bitset.members] bitset::to_string() hard to use Yes
303(i) CD1 22.9.4 [bitset.operators] Bitset input operator underspecified Yes
185(i) CD1 22.10 [function.objects] Questionable use of term "inline" Yes
660(i) CD1 22.10 [function.objects] Missing Bitwise Operations Yes
521(i) CD1 22.10.6 [refwrap] Garbled requirements for argument_type in reference_wrapper Yes
689(i) CD1 [refwrap.const] reference_wrapper constructor overly constrained Yes
284(i) CD1 22.10.8 [comparisons] unportable example in 20.3.7, p6 Yes
297(i) CD1 22.10.10 [logical.operations] const_mem_fun_t<>::argument_type should be const T* Yes
520(i) CD1 22.10.15 [func.bind] Result_of and pointers to data members Yes
527(i) CD1 [func.bind.bind] tr1::bind has lost its Throws clause Yes
770(i) CD1 22.10.17 [func.wrap] std::function should use rvalue swap Yes
769(i) CD1 [func.wrap.func] std::function should use nullptr_t instead of "unspecified-null-pointer-type" Yes
610(i) CD1 [func.wrap.func.con] Suggested non-normative note for C++0x Yes
848(i) CD1 22.10.19 [unord.hash] Missing std::hash specializations for std::bitset/std::vector<bool> Yes
335(i) CD1 23.2.2 [char.traits.require] minor issue with char_traits, table 37 Yes
352(i) CD1 23.2.3 [char.traits.typedefs] missing fpos requirements Yes
709(i) CD1 23.2.4 [char.traits.specializations] char_traits::not_eof has wrong signature Yes
467(i) CD1 [char.traits.specializations.char] char_traits::lt(), compare(), and memcmp() Yes
180(i) CD1 23.4.3 [basic.string] Container member iterator arguments constness has unintended consequences Yes
263(i) CD1 23.4.3 [basic.string] Severe restriction on basic_string reference counting Yes
530(i) CD1 23.4.3 [basic.string] Must elements of a string be contiguous? Yes
534(i) CD1 23.4.3 [basic.string] Missing basic_string members Yes
301(i) CD1 [string.require] basic_string template ctor effects clause omits allocator argument Yes
259(i) CD1 [string.capacity] basic_string::operator[] and const correctness Yes
428(i) CD1 [string.erase] string::erase(iterator) validity Yes
403(i) CD1 [string.swap] basic_string::swap should not throw exceptions Yes
535(i) CD1 [string.swap] std::string::swap specification poorly worded Yes
91(i) CD1 [string.io] Description of operator>> and getline() for string<> might cause endless loop Yes
435(i) CD1 [string.io] bug in DR 25 Yes
586(i) CD1 [string.io] string inserter not a formatted function Yes
824(i) CD1 [string.io] rvalue ref issue with basic_string inserter Yes
771(i) CD1 23.4.5 [string.conversions] Impossible throws clause in [string.conversions] Yes
772(i) CD1 23.4.5 [string.conversions] Impossible return clause in [string.conversions] Yes
345(i) CD1 23.5 [c.strings] type tm in <cwchar> Yes
179(i) CD1 24.2 [container.requirements] Comparison of const_iterators to iterators doesn't work Yes
276(i) CD1 24.2 [container.requirements] Assignable requirement for container value type overly strict Yes
322(i) CD1 24.2 [container.requirements] iterator and const_iterator should have the same value type Yes
371(i) CD1 24.2 [container.requirements] Stability of multiset and multimap member functions Yes
589(i) CD1 24.2 [container.requirements] Requirements on iterators of member template functions of containers Yes 536
675(i) CD1 24.2 [container.requirements] Move assignment of containers Yes
759(i) CD1 24.2 [container.requirements] A reference is not an object Yes
766(i) CD1 24.2 [container.requirements] Inconsistent exception guarantees between ordered and unordered associative containers Yes
842(i) CD1 24.2 [container.requirements] ConstructibleAsElement and bit containers Yes
355(i) CD1 24.2.4 [sequence.reqmts] Operational semantics for a.back() Yes
438(i) CD1 24.2.4 [sequence.reqmts] Ambiguity in the "do the right thing" clause Yes
103(i) CD1 24.2.7 [associative.reqmts] set::iterator is required to be modifiable, but this allows modification of keys Yes
130(i) CD1 24.2.7 [associative.reqmts] Return type of container::erase(iterator) differs for associative containers Yes 451
233(i) CD1 24.2.7 [associative.reqmts] Insertion hints in associative containers Yes 192, 246
264(i) CD1 24.2.7 [associative.reqmts] Associative container insert(i, j) complexity requirements are not feasible. Yes 102
316(i) CD1 24.2.7 [associative.reqmts] Vague text in Table 69 Yes
354(i) CD1 24.2.7 [associative.reqmts] Associative container lower/upper bound requirements Yes
518(i) CD1 24.2.8 [unord.req] Are insert and erase stable for unordered_multiset and unordered_multimap? Yes
679(i) CD1 24.3 [sequences] resize parameter by value Yes
519(i) CD1 24.3.8 [array] Data() undocumented Yes
720(i) CD1 24.3.8 [array] Omissions in constexpr usages Yes
776(i) CD1 24.3.8 [array] Undescribed assign function of std::array Yes
237(i) CD1 [deque.cons] Undefined expression in complexity specification Yes
850(i) CD1 [deque.capacity] Should shrink_to_fit apply to std::deque? Yes
638(i) CD1 [deque.modifiers] deque end invalidation during erase Yes
307(i) CD1 24.3.11 [list] Lack of reference typedefs in container adaptors Yes
320(i) CD1 [list.cons] list::assign overspecified Yes
410(i) CD1 [list.cons] Missing semantics for stack and queue comparison operators Yes
250(i) CD1 [list.ops] splicing invalidates iterators Yes
278(i) CD1 [list.ops] What does iterator validity mean? Yes
300(i) CD1 [list.ops] list::merge() specification incomplete Yes
315(i) CD1 [list.ops] Bad "range" in list::unique complexity Yes
464(i) CD1 24.3.12 [vector] Suggestion for new member functions in standard containers Yes
469(i) CD1 24.3.12 [vector] vector<bool> ill-formed relational operators Yes
496(i) CD1 24.3.12 [vector] Illegal use of "T" in vector<bool> Yes
329(i) CD1 [vector.capacity] vector capacity, reserve and reallocation Yes
341(i) CD1 [vector.capacity] Vector reallocation and swap Yes
755(i) CD1 [vector.capacity] std::vector and std:string lack explicit shrink-to-fit operations Yes
247(i) CD1 [vector.modifiers] vector, deque::insert complexity Yes
406(i) CD1 [vector.modifiers] vector::insert(s) exception safety Yes
414(i) CD1 [vector.modifiers] Which iterators are invalidated by v.erase()? Yes
334(i) CD1 [map.access] map::operator[] specification forces inefficient implementation Yes
703(i) CD1 [map.access] map::at() need a complexity specification Yes
214(i) CD1 24.4.6 [set] set::find() missing const overload Yes 450
691(i) CD1 24.5 [unord] const_local_iterator cbegin, cend missing from TR1 Yes
852(i) CD1 24.5 [unord] unordered containers begin(n) mistakenly const Yes
761(i) CD1 [unord.map.elem] unordered_map needs an at() member function Yes
445(i) CD1 [iterator.traits] iterator_traits::reference unspecified for some iterator categories Yes
198(i) CD1 25.3.4 [iterator.concepts] Validity of pointers and references unspecified after iterator destruction Yes
346(i) CD1 25.3.4 [iterator.concepts] Some iterator member functions should be const Yes
407(i) CD1 25.3.4 [iterator.concepts] Can singular iterators be destroyed? Yes
98(i) CD1 [input.iterators] Input iterator requirements are badly written Yes
324(i) CD1 [output.iterators] Do output iterators have value types? Yes
200(i) CD1 [forward.iterators] Forward iterator requirements don't allow constant iterators Yes
478(i) CD1 [forward.iterators] Should forward iterator requirements table have a line for r->m? Yes 477
383(i) CD1 [bidirectional.iterators] Bidirectional iterator assertion typo Yes
448(i) CD1 [random.access.iterators] Random Access Iterators over abstract classes Yes
280(i) CD1 25.5.1 [reverse.iterators] Comparison of reverse_iterator to const reverse_iterator Yes
235(i) CD1 [reverse.iterator] No specification of default ctor for reverse_iterator Yes
386(i) CD1 [reverse.iter.elem] Reverse iterator's operator[] has impossible return type Yes
685(i) CD1 [reverse.iter.nonmember] reverse_iterator/move_iterator difference has invalid signatures Yes
561(i) CD1 [inserter] inserter overly generic Yes
680(i) CD1 [move.iterator] move_iterator operator-> return Yes
260(i) CD1 [istream.iterator.ops] Inconsistent return type of istream_iterator::operator++(int) Yes
261(i) CD1 [istream.iterator.ops] Missing description of istream_iterator::operator!= Yes
349(i) CD1 25.6.3 [ostream.iterator] Minor typographical error in ostream_iterator Yes
92(i) CD1 27 [algorithms] Incomplete Algorithm Requirements Yes
475(i) CD1 27.6.5 [alg.foreach] May the function object passed to for_each modify the elements of the iterated sequence? Yes
576(i) CD1 27.6.9 [alg.find.first.of] find_first_of is overconstrained Yes
240(i) CD1 27.6.10 [alg.adjacent.find] Complexity of adjacent_find() is meaningless Yes
426(i) CD1 27.6.15 [alg.search] search_n(), fill_n(), and generate_n() with negative n Yes
714(i) CD1 27.6.15 [alg.search] search_n complexity is too lax Yes
187(i) CD1 27.7.3 [alg.swap] iter_swap underspecified Yes
809(i) CD1 27.7.3 [alg.swap] std::swap should be overloaded for array types Yes
242(i) CD1 27.7.4 [alg.transform] Side effects of function objects Yes
283(i) CD1 27.7.5 [alg.replace] std::replace() requirement incorrect/insufficient Yes 483
337(i) CD1 27.7.5 [alg.replace] replace_copy_if's template parameter should be InputIterator Yes
779(i) CD1 27.7.8 [alg.remove] Resolution of #283 incomplete Yes
202(i) CD1 27.7.9 [alg.unique] unique() effects unclear when predicate not an equivalence relation Yes
239(i) CD1 27.7.9 [alg.unique] Complexity of unique() and/or unique_copy incorrect Yes
241(i) CD1 27.7.9 [alg.unique] Does unique_copy() require CopyConstructible and Assignable? Yes
538(i) CD1 27.7.9 [alg.unique] 241 again: Does unique_copy() require CopyConstructible and Assignable? Yes
488(i) CD1 27.7.11 [alg.rotate] rotate throws away useful information Yes
552(i) CD1 27.7.13 [alg.random.shuffle] random_shuffle and its generator Yes
713(i) CD1 [sort] sort() complexity is too lax Yes
270(i) CD1 27.8.4 [alg.binary.search] Binary search requirements overly strict Yes 472
577(i) CD1 [upper.bound] upper_bound(first, last, ...) cannot return last Yes
384(i) CD1 [equal.range] equal_range has unimplementable runtime complexity Yes
787(i) CD1 [binary.search] complexity of binary_search Yes
291(i) CD1 27.8.7 [alg.set.operations] Underspecification of set algorithms Yes
411(i) CD1 27.8.7 [alg.set.operations] Wrong names of set member functions Yes
281(i) CD1 27.8.9 [alg.min.max] std::min() and max() requirements overly restrictive Yes 486
715(i) CD1 27.8.9 [alg.min.max] minmax_element complexity is too lax Yes
286(i) CD1 27.13 [alg.c.library] <cstdlib> requirements missing size_t typedef Yes
405(i) CD1 27.13 [alg.c.library] qsort and POD Yes
387(i) CD1 28.4 [complex.numbers] std::complex over-encapsulated Yes
629(i) CD1 28.4.6 [complex.ops] complex<T> insertion and locale dependence Yes
595(i) CD1 28.4.7 [complex.value.ops] TR1/C++0x: fabs(complex<T>) redundant / wrongly specified Yes
781(i) CD1 28.4.7 [complex.value.ops] std::complex should add missing C99 functions Yes
844(i) CD1 28.4.10 [cmplx.over] complex pow return type is ambiguous Yes
507(i) CD1 28.5 [rand] Missing requirement for variate_generator::operator() Yes
699(i) CD1 28.5 [rand] N2111 changes min/max Yes
505(i) CD1 28.5.3 [rand.req] Result_type in random distribution requirements Yes
654(i) CD1 [rand.req.eng] Missing IO roundtrip for random number engines Yes
678(i) CD1 [rand.req.eng] Changes for [rand.req.eng] Yes
728(i) CD1 [rand.eng.mers] Problem in [rand.eng.mers]/6 Yes
609(i) CD1 [rand.adapt.ibits] missing static const Yes
508(i) CD1 28.5.6 [rand.predef] Bad parameters for ranlux64_base_01 Yes
607(i) CD1 [rand.util.seedseq] Concern about short seed vectors Yes
608(i) CD1 [rand.util.seedseq] Unclear seed_seq construction details Yes
677(i) CD1 [rand.util.seedseq] Weaknesses in seed_seq::randomize [rand.util.seedseq] Yes
712(i) CD1 [rand.util.seedseq] seed_seq::size no longer useful Yes
782(i) CD1 [rand.util.seedseq] Extended seed_seq constructor is useless Yes
655(i) CD1 [rand.util.canonical] Signature of generate_canonical not useful Yes
734(i) CD1 [rand.dist.norm.chisq] Unnecessary restriction in [rand.dist.norm.chisq] Yes
792(i) CD1 [rand.dist.samp.pconst] piecewise_constant_distribution is undefined for a range with just one endpoint Yes
621(i) CD1 28.6 [numarray] non-const copy assignment operators of helper arrays Yes
253(i) CD1 [valarray.cons] valarray helper functions are almost entirely useless Yes
620(i) CD1 [valarray.cons] valid uses of empty valarrays Yes
624(i) CD1 [valarray.assign] valarray assignment and arrays of unequal length Yes
389(i) CD1 [valarray.access] Const overload of valarray::operator[] returns by value Yes 77
618(i) CD1 [valarray.members] valarray::cshift() effects on empty array Yes
543(i) CD1 28.6.4 [class.slice] valarray slice default constructor Yes
123(i) CD1 [slice.arr.fill] Should valarray helper arrays fill functions be const? Yes
295(i) CD1 28.7 [c.math] Is abs defined in <cmath>? Yes
395(i) CD1 28.7 [c.math] inconsistencies in the definitions of rand() and random_shuffle() Yes
550(i) CD1 28.7 [c.math] What should the return type of pow(float,int) be? Yes
722(i) CD1 28.7 [c.math] Missing [c.math] functions nanf and nanl Yes
882(i) CD1 29.5.6 [time.duration.nonmember] duration non-member arithmetic requirements Yes
317(i) CD1 30 [localization] Instantiation vs. specialization of facets Yes
495(i) CD1 30 [localization] Clause 22 template parameter requirements Yes
268(i) CD1 30.3.1 [locale] Typo in locale synopsis Yes
360(i) CD1 30.3.1 [locale] locale mandates inefficient implementation Yes
327(i) CD1 [locale.category] Typo in time_get facet in table 52 Yes 447
340(i) CD1 [locale.category] interpretation of has_facet<Facet>(loc) Yes
347(i) CD1 [locale.category] locale::category and bitmask requirements Yes
436(i) CD1 [locale.facet] are cv-qualified facet types valid facets? Yes
391(i) CD1 [conversions.character] non-member functions specified as const Yes
228(i) CD1 30.4 [locale.categories] Incorrect specification of "..._byname" facets Yes
338(i) CD1 30.4 [locale.categories] is whitespace allowed between `-' and a digit? Yes
339(i) CD1 30.4.2 [category.ctype] definition of bitmask type restricted to clause 27 Yes
379(i) CD1 [locale.ctype.virtuals] nonsensical ctype::do_widen() requirement Yes
616(i) CD1 [locale.ctype.byname] missing 'typename' in ctype_byname Yes
695(i) CD1 [facet.ctype.special] ctype<char>::classic_table() not accessible Yes
153(i) CD1 [facet.ctype.char.members] Typo in narrow() semantics Yes 207
76(i) CD1 [locale.codecvt] Can a codecvt facet always convert one internal character at a time? Yes
664(i) CD1 [locale.codecvt.virtuals] do_unshift for codecvt<char, char, mbstate_t> Yes
665(i) CD1 [locale.codecvt.virtuals] do_unshift return value Yes
305(i) CD1 [locale.codecvt.byname] Default behavior of codecvt<wchar_t, char, mbstate_t>::length() Yes
380(i) CD1 [locale.codecvt.byname] typos in codecvt tables 53 and 54 Yes
381(i) CD1 [locale.codecvt.byname] detection of invalid mbstate_t in codecvt Yes
275(i) CD1 [facet.num.get.members] Wrong type in num_get::get() overloads Yes
23(i) CD1 [facet.num.get.virtuals] Num_get overflow result Yes
221(i) CD1 [facet.num.get.virtuals] num_get<>::do_get stage 2 processing broken Yes
321(i) CD1 [facet.num.get.virtuals] Typo in num_get Yes
358(i) CD1 [facet.num.get.virtuals] interpreting thousands_sep after a decimal_point Yes
359(i) CD1 [facet.num.put.members] num_put<>::do_put (..., bool) undocumented Yes
231(i) CD1 [facet.num.put.virtuals] Precision in iostream? Yes
282(i) CD1 [facet.num.put.virtuals] What types does numpunct grouping refer to? Yes
318(i) CD1 [locale.numpunct.byname] Misleading comment in definition of numpunct_byname Yes
248(i) CD1 30.4.6 [category.time] time_get fails to set eofbit Yes
461(i) CD1 [locale.time.get.virtuals] time_get hard or impossible to implement Yes
328(i) CD1 [locale.money.put.virtuals] Bad sprintf format modifier in money_put<>::do_put() Yes
325(i) CD1 [locale.moneypunct.virtuals] Misleading text in moneypunct<>::do_grouping Yes
666(i) CD1 [locale.moneypunct.virtuals] moneypunct::do_curr_symbol() Yes
44(i) CD1 31 [input.output] Iostreams use operator== on int_type values Yes
273(i) CD1 31 [input.output] Missing ios_base qualification on members of a dependent class Yes
308(i) CD1 31 [input.output] Table 82 mentions unrelated headers Yes
365(i) CD1 31 [input.output] Lack of const-qualification in clause 27 Yes
623(i) CD1 31.2.1 [iostream.limits.imbue] pubimbue forbidden to call imbue Yes
369(i) CD1 31.4 [iostream.objects] io stream objects and static ctors Yes
455(i) CD1 31.4 [iostream.objects] cerr::tie() and wcerr::tie() are overspecified Yes
574(i) CD1 31.4 [iostream.objects] DR 369 Contradicts Text Yes
331(i) CD1 [ios.failure] bad declaration of destructor for ios_base::failure Yes
363(i) CD1 [ios.failure] Missing exception specification in Yes
49(i) CD1 [ios.members.static] Underspecification of ios_base::sync_with_stdio Yes
441(i) CD1 31.5.3 [fpos] Is fpos::state const? Yes
256(i) CD1 [basic.ios.members] typo in, p17: copy_event does not exist Yes
292(i) CD1 [basic.ios.members] effects of a.copyfmt (a) Yes
272(i) CD1 [iostate.flags] Missing parentheses around subexpression Yes 569
412(i) CD1 [iostate.flags] Typo in Yes 429
468(i) CD1 [iostate.flags] unexpected consequences of ios_base::operator void*() Yes
364(i) CD1 [streambuf.virt.buffer] Inconsistent wording in Yes
567(i) CD1 31.7 [iostream.format] streambuf inserter and extractor should be unformatted Yes
373(i) CD1 [istream.formatted.reqmts] Are basic_istream and basic_ostream to use (exceptions()&badbit) != 0 ? Yes
118(i) CD1 [istream.formatted.arithmetic] basic_istream uses nonexistent num_get member functions Yes
661(i) CD1 [istream.formatted.arithmetic] New changes make special extractions useless Yes
413(i) CD1 [istream.extractors] Proposed resolution to LDR#64 still wrong Yes
136(i) CD1 [istream.unformatted] seekp, seekg setting wrong streams? Yes
243(i) CD1 [istream.unformatted] get and getline when sentry reports failure Yes
370(i) CD1 [istream.unformatted] Minor error in basic_istream::get Yes
531(i) CD1 [istream.unformatted] array forms of unformatted input functions Yes
537(i) CD1 [istream.unformatted] Typos in the signatures in and Yes
566(i) CD1 [istream.unformatted] array forms of unformatted input function undefined for zero-element arrays Yes
415(i) CD1 [istream.manip] behavior of std::ws Yes
271(i) CD1 [iostreamclass] basic_iostream missing typedefs Yes
165(i) CD1 [ostream] xsputn(), pubsync() never called by basic_ostream members? Yes
311(i) CD1 [ostream] Incorrect wording in basic_ostream class synopsis Yes
442(i) CD1 [ostream.sentry] sentry::operator bool() inconsistent signature Yes
117(i) CD1 [ostream.inserters.arithmetic] basic_ostream uses nonexistent num_put member functions Yes
640(i) CD1 [ostream.inserters.arithmetic] does not handle (unsigned) long long Yes
167(i) CD1 [ostream.inserters.character] Improper use of traits_type::length() Yes
474(i) CD1 [ostream.inserters.character] confusing Footnote 297 Yes
581(i) CD1 [ostream.unformatted] flush() not unformatted function Yes
333(i) CD1 [ostream.manip] does endl imply synchronization with the device? Yes
183(i) CD1 31.7.7 [std.manip] I/O stream manipulators don't work for wide character streams Yes
692(i) CD1 31.7.8 [ext.manip] get_money and put_money should be formatted I/O functions Yes
252(i) CD1 31.8 [string.streams] missing casts/C-style casts used in iostreams Yes
562(i) CD1 31.8 [string.streams] stringbuf ctor inefficient Yes
251(i) CD1 31.8.2 [stringbuf] basic_stringbuf missing allocator_type Yes
238(i) CD1 [stringbuf.cons] Contradictory results of stringbuf initialization. Yes
375(i) CD1 [stringbuf.virtuals] basic_ios should be ios_base in Yes
376(i) CD1 [stringbuf.virtuals] basic_streambuf semantics Yes
432(i) CD1 [stringbuf.virtuals] stringbuf::overflow() makes only one write position available Yes
453(i) CD1 [stringbuf.virtuals] basic_stringbuf::seekoff need not always fail for an empty stream Yes
563(i) CD1 [stringbuf.virtuals] stringbuf seeking from end Yes
420(i) CD1 31.10 [file.streams] is std::FILE a complete type? Yes
444(i) CD1 31.10 [file.streams] Bad use of casts in fstream Yes
460(i) CD1 31.10 [file.streams] Default modes missing from basic_fstream member specifications Yes
643(i) CD1 31.10.3 [filebuf] Impossible "as if" clauses Yes
443(i) CD1 [filebuf.members] filebuf::close() inconsistent use of EOF Yes
596(i) CD1 [filebuf.members] Table 112 omits "a+" and "a+b" modes Yes
171(i) CD1 [filebuf.virtuals] Strange seekpos() semantics due to joint position Yes
285(i) CD1 [ifstream.cons] minor editorial errors in fstream ctors Yes
409(i) CD1 [ifstream.members] Closing an fstream should clear error state Yes
622(i) CD1 [fstream.members] behavior of filebuf dtor and close on error Yes
524(i) CD1 32 [re] regex named character classes and case-insensitivity don't mix Yes
628(i) CD1 32.7 [re.regex] Inconsistent definition of basic_regex constructor Yes
682(i) CD1 32.7.2 [re.regex.construct] basic_regex ctor takes InputIterator or ForwardIterator? Yes
681(i) CD1 32.8.3 [re.submatch.op] Operator functions impossible to compare are defined in [re.submatch.op] Yes
646(i) CD1 32.9.6 [re.results.form] const incorrect match_result members Yes
652(i) CD1 32.11.1 [re.regiter] regex_iterator and const correctness Yes
650(i) CD1 32.11.2 [re.tokiter] regex_token_iterator and const correctness Yes
651(i) CD1 [re.tokiter.cnstr] Missing preconditions for regex_token_iterator c'tors Yes
783(i) CD1 [thread.thread.id] thread::id reuse Yes
818(i) CD1 33.5.4 [atomics.order] wording for memory ordering Yes
768(i) CD1 33.5.8 [atomics.types.generic] Typos in [atomics]? Yes
845(i) CD1 33.5.8 [atomics.types.generic] atomics cannot support aggregate initialization Yes
777(i) CD1 [atomics.types.operations] Atomics Library Issue Yes
846(i) CD1 [atomics.types.operations] No definition for constructor Yes
109(i) CD1 99 [depr.lib.binders] Missing binders for non-const sequence elements Yes
362(i) CD1 99 [depr.lib.binders] bind1st/bind2nd type safety Yes
798(i) CD1 99 [depr.lib.binders] Refactoring of binders lead to interface breakage Yes
425(i) CD1 99 [depr.temporary.buffer] return value of std::get_temporary_buffer Yes
843(i) CD1 99 [func.referenceclosure.cons] Reference Closure Yes
789(i) CD1 99 [rand.adapt.xor] xor_combine_engine(result_type) should be explicit Yes
858(i) CD1 99 [util.dynamic.safety] Wording for Minimal Support for Garbage Collection Yes

TC1 (125 issues)

Issue Status Section Title Proposed Resolution Priority Duplicates
222(i) TC1 [structure.specifications] Are throw clauses necessary if a throw is already implied by the effects clause? Yes
1(i) TC1 [using.linkage] C library linkage editing oversight Yes
199(i) TC1 [allocator.requirements] What does allocate(0) return? Yes
147(i) TC1 [global.functions] Library Intro refers to global functions that aren't global Yes
119(i) TC1 [res.on.exception.handling] Should virtual functions be allowed to strengthen the exception specification? Yes
3(i) TC1 17.5 [support.start.term] Atexit registration during atexit() call is not described Yes
9(i) TC1 17.6.3 [new.delete] Operator new(0) calls should not yield the same pointer Yes
114(i) TC1 [new.delete.placement] Placement forms example in error twice Yes 196
108(i) TC1 17.7.3 [type.info] Lifetime of exception::what() return unspecified Yes
70(i) TC1 17.9 [support.exception] Uncaught_exception() missing throw() specification Yes
181(i) TC1 22.3 [pairs] make_pair() unintended behavior Yes
11(i) TC1 22.9.2 [template.bitset] Bitset minor problems Yes
7(i) TC1 23 [strings] String clause minor problems Yes
57(i) TC1 [char.traits.specializations.wchar.t] Mistake in char_traits Yes
42(i) TC1 23.4.3 [basic.string] String ctors specify wrong default allocator Yes
83(i) TC1 23.4.3 [basic.string] String::npos vs. string::max_size() Yes 89
209(i) TC1 23.4.3 [basic.string] basic_string declarations inconsistent Yes
86(i) TC1 [string.require] String constructors don't describe exceptions Yes
141(i) TC1 [string.insert] basic_string::find_last_of, find_last_not_of say pos instead of xpos Yes
27(i) TC1 [string.erase] String::erase(range) yields wrong iterator Yes
5(i) TC1 [string.swap] String::compare specification questionable Yes 87
25(i) TC1 [string.io] String operator<< uses width() value wrong Yes 67
90(i) TC1 [string.io] Incorrect description of operator >> for strings Yes
211(i) TC1 [string.io] operator>>(istream&, string&) doesn't set failbit Yes
51(i) TC1 24.2 [container.requirements] Requirement to not invalidate iterators missing Yes
139(i) TC1 24.2.4 [sequence.reqmts] Optional sequence operation table description unclear Yes
151(i) TC1 24.2.4 [sequence.reqmts] Can't currently clear() empty container Yes
224(i) TC1 24.2.7 [associative.reqmts] clear() complexity for associative containers refers to undefined N Yes
144(i) TC1 [deque.cons] Deque constructor complexity wrong Yes
132(i) TC1 [list.capacity] list::resize description uses random access iterators Yes
69(i) TC1 24.3.12 [vector] Must elements of a vector be contiguous? Yes
134(i) TC1 [vector.cons] vector constructors over specified Yes
133(i) TC1 24.4.4 [map] map missing get_allocator() Yes
208(i) TC1 25.3.4 [iterator.concepts] Unnecessary restriction on past-the-end iterators Yes
110(i) TC1 25.6.4 [istreambuf.iterator] istreambuf_iterator::equal not const Yes
39(i) TC1 [istreambuf.iterator.ops] istreambuf_iterator<>::operator++(int) definition garbled Yes
112(i) TC1 [ostreambuf.iter.cons] Minor typo in ostreambuf_iterator constructor Yes
210(i) TC1 27 [algorithms] distance first and last confused Yes
150(i) TC1 27.6.9 [alg.find.first.of] Find_first_of says integer instead of iterator Yes
227(i) TC1 27.7.3 [alg.swap] std::swap() should require CopyConstructible or DefaultConstructible arguments Yes
223(i) TC1 27.7.10 [alg.reverse] reverse algorithm should use iter_swap rather than swap Yes
193(i) TC1 27.8.8 [alg.heap.operations] Heap operations description incorrect Yes 216
212(i) TC1 27.8.9 [alg.min.max] Empty range behavior unclear for several algorithms Yes
142(i) TC1 27.8.11 [alg.lex.comparison] lexicographical_compare complexity wrong Yes
79(i) TC1 28.4.2 [complex.syn] Inconsistent declaration of polar() Yes
80(i) TC1 28.4.2 [complex.syn] Global Operators of complex declared twice Yes
146(i) TC1 28.4.6 [complex.ops] complex<T> Inserter and Extractor need sentries Yes
125(i) TC1 28.6.2 [template.valarray] valarray<T>::operator!() return type is inconsistent Yes
106(i) TC1 28.6.5 [template.slice.array] Numeric library private members are implementation defined Yes
31(i) TC1 30.3.1 [locale] Immutable locale values Yes 378
37(i) TC1 30.3.1 [locale] Leftover "global" reference Yes
137(i) TC1 30.3.1 [locale] Do use_facet and has_facet look in the global locale? Yes
21(i) TC1 [locale.category] Codecvt_byname<> instantiations Yes
30(i) TC1 [locale.category] Wrong header for LC_* Yes
14(i) TC1 [locale.members] Locale::combine should be const Yes
15(i) TC1 [locale.members] Locale::name requirement inconsistent Yes
8(i) TC1 [locale.statics] Locale::global lacks guarantee Yes
38(i) TC1 30.3.2 [locale.global.templates] Facet definition incomplete Yes
126(i) TC1 [locale.ctype.virtuals] typos in Effects clause of ctype::do_narrow() Yes
152(i) TC1 [locale.ctype.virtuals] Typo in scan_is() semantics Yes
124(i) TC1 [locale.ctype.byname] ctype_byname<charT>::do_scan_is & do_scan_not return type should be const charT* Yes
28(i) TC1 [facet.ctype.char.members] Ctype<char>is ambiguous Yes 236
75(i) TC1 [locale.codecvt] Contradiction in codecvt::length's argument types Yes
16(i) TC1 [locale.codecvt] Bad ctype_byname<char> decl Yes
19(i) TC1 [locale.codecvt] "Noconv" definition too vague Yes 10
24(i) TC1 [locale.codecvt] "do_convert" doesn't exist Yes 72
33(i) TC1 [locale.codecvt] Codecvt<> mentions from_type Yes 43
74(i) TC1 [locale.codecvt] Garbled text for codecvt::do_max_length Yes
18(i) TC1 [facet.num.get.members] Get(...bool&) omitted Yes
17(i) TC1 [facet.num.get.virtuals] Bad bool parsing Yes
154(i) TC1 [facet.num.get.virtuals] Missing double specifier for do_get() Yes
34(i) TC1 [facet.num.put.virtuals] True/falsename() not in ctype<> Yes
20(i) TC1 [facet.numpunct.virtuals] Thousands_sep returns wrong type Yes
71(i) TC1 [locale.time.get] Do_get_monthname synopsis missing argument Yes
164(i) TC1 [locale.time.put.virtuals] do_put() has apparently unused fill argument Yes
55(i) TC1 31 [input.output] Invalid stream position is undefined Yes
155(i) TC1 31.4 [iostream.objects] Typo in naming the class defining the class Init Yes
29(i) TC1 31.4.3 [narrow.stream.objects] Ios_base::init doesn't exist Yes
35(i) TC1 31.5 [iostreams.base] No manipulator unitbuf in synopsis Yes
41(i) TC1 31.5.2 [ios.base] Ios_base needs clear(), exceptions() Yes 157
50(i) TC1 31.5.2 [ios.base] Copy constructor and assignment operator of ios_base Yes
78(i) TC1 31.5.2 [ios.base] Typo: event_call_back Yes
48(i) TC1 [ios.failure] Use of non-existent exception constructor Yes
189(i) TC1 [fmtflags.state] setprecision() not specified correctly Yes
47(i) TC1 [ios.base.locales] Imbue() and getloc() Returns clauses swapped Yes
156(i) TC1 [ios.base.locales] Typo in imbue() description Yes
36(i) TC1 [ios.base.storage] Iword & pword storage lifetime omitted Yes
220(i) TC1 [ios.base.cons] ~ios_base() usage valid? Yes
52(i) TC1 [fpos.operations] Small I/O problems Yes
53(i) TC1 [basic.ios.cons] Basic_ios destructor unspecified Yes
56(i) TC1 31.6.3 [streambuf] Showmanyc's return type Yes
122(i) TC1 31.6.3 [streambuf] streambuf/wstreambuf description should not say they are specializations Yes
54(i) TC1 [streambuf.cons] Basic_streambuf's destructor Yes
59(i) TC1 [streambuf.get.area] Ambiguity in specification of gbump Yes
158(i) TC1 [streambuf.virt.buffer] Underspecified semantics for setbuf() Yes
159(i) TC1 [streambuf.virt.get] Strange use of underflow() Yes
32(i) TC1 [streambuf.virt.pback] Pbackfail description inconsistent Yes
160(i) TC1 [istream] Typo: Use of non-existing function exception() Yes
26(i) TC1 [istream.sentry] Bad sentry example Yes
195(i) TC1 [istream.sentry] Should basic_istream::sentry's constructor ever set eofbit? Yes
60(i) TC1 [istream.formatted.reqmts] What is a formatted input function? Yes 162, 163, 166
161(i) TC1 [istream.formatted.arithmetic] Typo: istream_iterator vs. istreambuf_iterator Yes
13(i) TC1 [istream.extractors] Eos refuses to die Yes
64(i) TC1 [istream.extractors] Exception handling in basic_istream::operator>>(basic_streambuf*) Yes
68(i) TC1 [istream.extractors] Extractors for char* should store null at end Yes
61(i) TC1 [istream.unformatted] Ambiguity in iostreams exception policy Yes
62(i) TC1 [istream.unformatted] Sync's return value Yes
129(i) TC1 [istream.unformatted] Need error indication from seekp() and seekg() Yes
172(i) TC1 [istream.unformatted] Inconsistent types for basic_istream::ignore() Yes
63(i) TC1 [ostream.unformatted] Exception-handling policy for unformatted output Yes
168(i) TC1 [ostream.unformatted] Typo: formatted vs. unformatted Yes
169(i) TC1 [stringbuf.virtuals] Bad efficiency of overflow() mandated Yes
170(i) TC1 31.8.5 [stringstream] Inconsistent definition of traits_type Yes
173(i) TC1 [filebuf.virtuals] Inconsistent types for basic_filebuf::setbuf() Yes
22(i) TC1 [ifstream.members] Member open vs. flags Yes
127(i) TC1 99 [auto.ptr] auto_ptr<> conversion issues Yes
174(i) TC1 99 [depr.ios.members] Typo: OFF_T vs. POS_T Yes
175(i) TC1 99 [depr.ios.members] Ambiguity for basic_streambuf::pubseekpos() and a few other functions. Yes
176(i) TC1 99 [depr.ios.members] exceptions() in ios_base...? Yes
46(i) TC1 99 [depr.str.strstreams] Minor Annex D errors Yes
115(i) TC1 99 [depr.strstream.cons] Typo in strstream constructors Yes
66(i) TC1 99 [depr.strstreambuf.virtuals] Strstreambuf::setbuf Yes
40(i) TC1 99 [facets.examples] Meaningless normative paragraph in examples Yes
148(i) TC1 99 [facets.examples] Functions in the example facet BoolNames should be const Yes
217(i) TC1 99 [facets.examples] Facets example (Classifying Japanese characters) contains errors Yes

Resolved (389 issues)

Issue Status Section Title Proposed Resolution Priority Duplicates
2075(i) Resolved 6.9.2 [intro.multithread] Progress guarantees, lock-free property, and scheduling assumptions Yes