C++ Standard Library Issues List (Revision D125)

Index by Section

Reference ISO/IEC IS 14882:2024(E)

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

Index by Section

(view only non-Ready open issues)

Revised 2024-11-14 at 11:34:10 UTC

Section 17 (2 issues)

(view only non-Ready open issues)

Issue	Status	Section	Title	Proposed Resolution	Priority	Duplicates
4126⁽ⁱ⁾	Tentatively Ready	17.3.2 [version.syn]	Some feature-test macros for fully freestanding features are not yet marked freestanding	Yes	2
4157⁽ⁱ⁾	Tentatively Ready	17.11.6 [cmp.alg]	The resolution of LWG3465 was damaged by P2167R3	Yes

Section 20 (4 issues)

(view only non-Ready open issues)

Issue	Status	Section	Title	Proposed Resolution	Priority	Duplicates
4144⁽ⁱ⁾	Tentatively Ready	20.3.1.3.1 [unique.ptr.single.general]	Disallow `unique_ptr<T&, D>`	Yes
4148⁽ⁱ⁾	Tentatively Ready	20.3.1.3.5 [unique.ptr.single.observers]	`unique_ptr::operator*` should not allow dangling references	Yes
4024⁽ⁱ⁾	Ready	20.3.2.2.7 [util.smartptr.shared.create]	Underspecified destruction of objects created in `std::make_shared_for_overwrite/std::allocate_shared_for_overwrite`	Yes	2
3216⁽ⁱ⁾	Tentatively Ready	20.3.2.2.7 [util.smartptr.shared.create]	Rebinding the allocator before calling `construct`/`destroy` in `allocate_shared`	Yes	3

Section 21 (1 issues)

(view only non-Ready open issues)

Issue	Status	Section	Title	Proposed Resolution	Priority	Duplicates
4113⁽ⁱ⁾	Tentatively Ready	21.3.5.4 [meta.unary.prop]	Disallow `has_unique_object_representations<Incomplete[]>`	Yes

Section 22 (4 issues)

(view only non-Ready open issues)

Issue	Status	Section	Title	Proposed Resolution	Priority	Duplicates
3886⁽ⁱ⁾	Tentatively Ready	22.5.3.1 [optional.optional.general]	Monad mo' problems	Yes	3
4141⁽ⁱ⁾	Tentatively Ready	22.5.3.1 [optional.optional.general]	Improve prohibitions on "additional storage"	Yes
4072⁽ⁱ⁾	Ready	22.5.8 [optional.comp.with.t]	`std::optional` comparisons: constrain harder	Yes	1
4140⁽ⁱ⁾	Tentatively Ready	22.9.2.1 [template.bitset.general]	Useless default constructors for bit reference types	Yes

Section 23 (3 issues)

(view only non-Ready open issues)

Issue	Status	Section	Title	Proposed Resolution	Priority	Duplicates
4147⁽ⁱ⁾	Tentatively Ready	23.2.4 [sequence.reqmts]	Precondition on `inplace_vector::emplace`	Yes
4164⁽ⁱ⁾	Ready	23.3.7.5 [forward.list.modifiers]	Missing guarantees for `forward_list` modifiers	Yes	3
4135⁽ⁱ⁾	Tentatively Ready	23.3.7.7 [forward.list.erasure]	The helper lambda of `std::erase` for `list` should specify return type as `bool`	Yes

Section 24 (1 issues)

(view only non-Ready open issues)

Issue	Status	Section	Title	Proposed Resolution	Priority	Duplicates
4170⁽ⁱ⁾	Tentatively Ready	24.3.4.14 [iterator.concept.contiguous]	`contiguous_iterator` should require `to_address(I{})`	Yes

Section 25 (5 issues)

(view only non-Ready open issues)

Issue	Status	Section	Title	Proposed Resolution	Priority	Duplicates
4027⁽ⁱ⁾	Ready	25.2 [ranges.syn]	`possibly-const-range` should prefer returning `const R&`	Yes	2
4112⁽ⁱ⁾	Ready	25.5.2 [range.utility.helpers]	`has-arrow` should required `operator->()` to be `const`-qualified	Yes
3899⁽ⁱ⁾	Ready	25.8.5 [coro.generator.promise]	`co_yield`ing elements of an lvalue `generator` is unnecessarily inefficient	Yes	3
3900⁽ⁱ⁾	Ready	25.8.5 [coro.generator.promise]	The `allocator_arg_t` overloads of `generator::promise_type::operator new` should not be constrained	Yes	3
4119⁽ⁱ⁾	Tentatively Ready	25.8.5 [coro.generator.promise]	`generator::promise_type::yield_value(ranges::elements_of<R, Alloc>)`'s nested `generator` may be ill-formed	Yes

Section 26 (3 issues)

Issue	Status	Section	Title	Proposed Resolution	Priority	Duplicates
3918⁽ⁱ⁾	Ready	26.11.6 [uninitialized.move]	`std::uninitialized_move/_n` and guaranteed copy elision	Yes	3
3436⁽ⁱ⁾	Ready	26.11.8 [specialized.construct]	`std::construct_at` should support arrays	Yes	2
4085⁽ⁱ⁾	Ready	26.12.2 [alg.rand.generate]	`ranges::generate_random`'s helper lambda should specify the return type	Yes	2

Section 27 (1 issues)

Issue	Status	Section	Title	Proposed Resolution	Priority	Duplicates
4064⁽ⁱ⁾	Ready	27.5.1 [cstring.syn]	Clarify that `std::launder` is not needed when using the result of `std::memcpy`	Yes	3

Section 28 (2 issues)

(view only non-Ready open issues)

Issue	Status	Section	Title	Proposed Resolution	Priority	Duplicates
4084⁽ⁱ⁾	Tentatively Ready	28.3.4.3.3.3 [facet.num.put.virtuals]	`std::fixed` ignores `std::uppercase`	Yes	3
4142⁽ⁱ⁾	Tentatively Ready	28.5.6.6 [format.parse.ctx]	`format_parse_context::check_dynamic_spec` should require at least one type	Yes

Section 29 (3 issues)

(view only non-Ready open issues)

Issue	Status	Section	Title	Proposed Resolution	Priority	Duplicates
4014⁽ⁱ⁾	Ready	29.5.4.4 [rand.eng.sub]	LWG 3809 changes behavior of some existing `std::subtract_with_carry_engine` code	Yes	2
4134⁽ⁱ⁾	Ready	29.5.4.5 [rand.eng.philox]	Issue with Philox algorithm specification	Yes	1
4153⁽ⁱ⁾	Tentatively Ready	29.5.4.5 [rand.eng.philox]	Fix extra "-1" for `philox_engine::max()`	Yes

Section 30 (1 issues)

(view only non-Ready open issues)

Issue	Status	Section	Title	Proposed Resolution	Priority	Duplicates
4124⁽ⁱ⁾	Tentatively Ready	30.12 [time.format]	Cannot format `zoned_time` with resolution coarser than seconds	Yes

Section 31 (2 issues)

(view only non-Ready open issues)

Issue	Status	Section	Title	Proposed Resolution	Priority	Duplicates
4088⁽ⁱ⁾	Tentatively Ready	31.7.6.3.5 [ostream.formatted.print]	`println` ignores the locale imbued in `std::ostream`	Yes
4044⁽ⁱ⁾	Ready	31.7.10 [print.fun]	Confusing requirements for `std::print` on POSIX platforms	Yes	3

Section 32 (2 issues)

(view only non-Ready open issues)

Issue	Status	Section	Title	Proposed Resolution	Priority	Duplicates
4169⁽ⁱ⁾	Tentatively Ready	32.5.8.2 [atomics.types.operations]	`std::atomic<T>`'s default constructor should be constrained	Yes
4154⁽ⁱ⁾	Ready	32.10.10.2 [futures.task.members]	The Mandates for `std::packaged_task`'s constructor from a callable entity should consider decaying	Yes	3