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LWG-4490 Allow calling std::ranges::size in ranges algorithms

LWGLibrary Working Group issueLibrary Working Group issue

performanceMust go fasterMust go faster

rangesC++20/23 rangesC++20/23 ranges

Status: Open.

#6320 In microsoft/STL;

· StephanTLavavej opened on Jun 17, 2026

LWG-4487 Is member is_steady of a Cpp17Clock type required to be usable in constant expressions?

chronoC++20 chronoC++20 chrono

LWGLibrary Working Group issueLibrary Working Group issue

Status: Open.

#6319 In microsoft/STL;

· StephanTLavavej opened on Jun 17, 2026

LWG-4267 Uses-allocator construction is meaningless for tuple of references

LWGLibrary Working Group issueLibrary Working Group issue

Status: Open.

#6318 In microsoft/STL;

· StephanTLavavej opened on Jun 17, 2026

LWG-4249 The past end issue for lazy_split_view

LWGLibrary Working Group issueLibrary Working Group issue

rangesC++20/23 rangesC++20/23 ranges

Status: Open.

#6317 In microsoft/STL;

· StephanTLavavej opened on Jun 17, 2026

LWG-4218 Constraint recursion in basic_const_iterator's relational operators due to ADL + CWG-2369

LWGLibrary Working Group issueLibrary Working Group issue

Status: Open.

#6316 In microsoft/STL;

· StephanTLavavej opened on Jun 17, 2026

LWG-4158 packaged_task::operator= should abandon its shared state

LWGLibrary Working Group issueLibrary Working Group issue

Status: Open.

#6315 In microsoft/STL;

· StephanTLavavej opened on Jun 17, 2026

LWG-4125 move_iterator's default constructor should be constrained

LWGLibrary Working Group issueLibrary Working Group issue

Status: Open.

#6314 In microsoft/STL;

· StephanTLavavej opened on Jun 17, 2026

LWG-4121 ranges::to constructs associative containers via c.emplace(c.end(), *it)

LWGLibrary Working Group issueLibrary Working Group issue

rangesC++20/23 rangesC++20/23 ranges

Status: Open.

#6313 In microsoft/STL;

· StephanTLavavej opened on Jun 17, 2026

LWG-3417 Missing volatile atomic deprecations

LWGLibrary Working Group issueLibrary Working Group issue

Status: Open.

#6312 In microsoft/STL;

· StephanTLavavej opened on Jun 17, 2026

<algorithm>: Manually vectorised implementations of algorithms can be much slower than the basic implementation

performanceMust go fasterMust go faster

Status: Open.

#6308 In microsoft/STL;

· AnyOldName3 opened on Jun 14, 2026

<variant>: Add type() and value() intrinsics to STL.natvis?

enhancementSomething can be improvedSomething can be improved

visualizerHow the VS debugger displays STL typesHow the VS debugger displays STL types

Status: Open.

#6304 In microsoft/STL;

· puetzk opened on Jun 7, 2026

Explicit template argument barrier for algorithms that are function templates

questionFurther information is requestedFurther information is requested

Status: Open.

#6303 In microsoft/STL;

· frederick-vs-ja opened on Jun 2, 2026