List of issues - WG21 LWG Issues
ID Activity Section Status Title
4572 6 days ago [associative.reqmts.general] [map.modifiers] [set.modifiers] new Key ordering requirements of associative containers are poorly specified
4571 1 week ago [atomics.ref.generic.general] [atomics.types.generic.general] new Disallow specializing `std::atomic` and `std::atomic_ref`
4570 1 week ago [exec.snd.expos] new COMMON-DOMAIN should test for convertibility to `default_domain`
4569 1 week ago [mdspan.mdspan.overview] new mdspan should Mandates the relationship between element_type and reference
3417 1 week ago [atomics.types.operations] ready Missing volatile atomic deprecations
4531 1 week ago [version.syn] new Should there be a feature-test macro update for constexpr `std::to_(w)string`?
4538 1 week ago [meta.reflection.layout] new `member_offset::total_bits` should be `noexcept`
4539 1 week ago [bit.cast] new Undefined behavior in `std::bit_cast` should be diagnosed during constant evaluation
4541 1 week ago [locale.time.get.virtuals][time.parse] open Unclear behavior for parsing locale-dependent format
4543 1 week ago [simd.class][simd.mask.class] new Incorrect cast between `simd::vec` and `simd::mask` via conversion to and from impl-defined vector types
3402 1 week ago [rand.dist.bern.negbin] open Wording for negative_binomial_distribution is unclear as a consequence of LWG 2406 resolution
4568 2 weeks ago [exec.spawn.future] new `std::execution::spawn_future` is mishandling dependent senders
4567 2 weeks ago [version.syn] new Feature test macro value for `apply_result`, `is_applicable`
4566 2 weeks ago [linalg.scaled.scaledaccessor] [linalg.conj.conjugatedaccessor] new The element_type definition of scaled_accessor and conjugated_accessor are not quite right
3081 2 weeks ago [charconv.from.chars] open Floating point from_chars API does not distinguish between overflow and underflow
3082 2 weeks ago [charconv.from.chars] open from_chars specification regarding floating point rounding is inconsistent
3456 2 weeks ago [charconv.from.chars] new Pattern used by std::from_chars is underspecified
4565 3 weeks ago [range.subrange.general] new subrange should prevent slicing for contiguous iterators
4564 3 weeks ago [meta.reflection.queries] new Clarify when `constant_of` throws
4563 3 weeks ago [round.style] new Missing "round to nearest, ties away from zero" mode
4561 3 weeks ago [range.reverse.view] new reverse_view does not consider simple-view
4560 3 weeks ago [time.format] new Explicitly specify effects of precision specification in `duration` formatter
4562 1 month ago [mdspan.layout.stride.obs] new `layout_stride::is_exhaustive` specification is problematic when there's an extent equal to 1
4559 1 month ago [range.zip.view] [range.zip.transform.view] [range.cartesian.view] new zip_view, zip_transform_view, and cartesian_product_view should provide reserve_hint
4558 1 month ago [range.drop.view] [range.drop.while.view] new drop_view and drop_while_view should be const-iterable for input-only range
4206 1 month ago [execution.syn] new Alias template `connect_result_t` should be constrained with `sender_to`
4515 1 month ago [format.string.std] open `format`: `a` and `A` should insert the `0x` or `0X` prefix
4530 1 month ago [format.formatter.spec] new Unclear specification for formatter<charT[N], charT>
4551 1 month ago [exec.on] new Fix the customization domain of the `on` algorithm
4521 1 month ago [atomics.order] new Improve [atomics.order] p10 to have a consistent way with [intro.races]
4547 1 month ago [exec.as.awaitable] new sender-awaitable needs a deduction guide
4546 1 month ago [iterator.concept.winc] new Integer-class type should be structural type
4545 1 month ago [mdspan.layout.leftpad.cons][mdspan.layout.rightpad.cons] new Some converting constructors of `layout_left_padded::mapping` and `layout_right_padded::mapping` are missing a representability precondition for the padded stride
4519 1 month ago [thread.mutex.requirements.mutex.general] open No formal rule associates the total order of a mutex object with the rule for modification order
4524 1 month ago [exec.schedule.from] new Wrong deduced return type in [exec.schedule.from]
4320 2 months ago [hive] new `hive` operations involving insertion/erasure should have 𝒪(log n) time complexity
4503 2 months ago [concept.assignable] lewg Use of `std::common_reference_with` in `std::assignable_from` seems incorrect
4505 2 months ago [optional.specalg] new The `std::make_optional` overload taking `std::initializer_list` should not accept a reference type as its template argument
4507 2 months ago [input.output] core The order of side effects initiated by I/O functions is not described by happen-before
4508 2 months ago [cstdarg.syn] new Meaning of "compatible" and C++ desire for C23 changes unclear for `va_arg`
4509 2 months ago [optional.monadic] lewg std::optional<T>::transform cannot be implemented while supporting program-defined specializations
4516 2 months ago [algorithms] new `ranges` namespace is used inconsistently in [algorithms]
4502 2 months ago [exec.when.all] new std::execution::when_all Is Never Nothrow Connectable
4498 2 months ago [atomics.order] open §[atomics.order] The total order should be intended to be a strict total order
4513 2 months ago [meta.reflection.exception] new `meta::exception::what()` should be `consteval`
4490 2 months ago [algorithms.requirements] open Allow calling `std::ranges::size` in ranges algorithms
4489 3 months ago [range.concat.iterator] new concat_view::iterator's `iter_swap` has tautologically `false noexcept` specification
4487 3 months ago [time.clock.req] new Is member `is_steady` of a Cpp17Clock type required to be usable in constant expressions?
4359 3 months ago [exec.as.awaitable] new `as_awaitable(expr, p)` does not define semantics of call if `p` is not an lvalue
4471 3 months ago [exec.inline.scheduler] new Remove test for `get_env noexcept`-ness from `inline_scheduler`
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