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<code>&lt;string&gt;</code>: <code>wstring::find_first_of</code> crashes on some inputs

bugSomething isn't workingSomething isn't working

Status: Open.

#5757 In microsoft/STL;

· AlexGuteniev opened on Oct 4, 2025

LWG-3819 <code>reference_meows_from_temporary</code> should not use <code>is_meowible</code>

compilerCompiler work involvedCompiler work involved

LWGLibrary Working Group issueLibrary Working Group issue

Status: Open.

#5756 In microsoft/STL;

· StephanTLavavej opened on Oct 3, 2025

Implement P2255R2 Type Traits To Detect References Binding To Temporaries for MSVC and EDG

compilerCompiler work involvedCompiler work involved

enhancementSomething can be improvedSomething can be improved

Status: Open.

#5755 In microsoft/STL;

· StephanTLavavej opened on Oct 3, 2025

Q4 2025 priorities

announcementAnnouncements related to the repoAnnouncements related to the repo

Status: Open.

#5751 In microsoft/STL;

· StephanTLavavej opened on Oct 2, 2025

<code>&lt;filesystem&gt;</code>: <code>exists</code> returns true for <code>[file-path]/.</code>

bugSomething isn't workingSomething isn't working

filesystemC++17 filesystemC++17 filesystem

Status: Open.

#5748 In microsoft/STL;

· achabense opened on Oct 1, 2025

_malloc_dbg allocations freed with delete in std::format (debug builds)

bugSomething isn't workingSomething isn't working

Status: Open.

#5747 In microsoft/STL;

· friesofdoom opened on Oct 1, 2025

<code>vector_algorithms.cpp</code>: undefined behavior

bugSomething isn't workingSomething isn't working

Status: Open.

#5741 In microsoft/STL;

· AlexGuteniev opened on Sep 26, 2025

Implement P2674R1 <code>is_implicit_lifetime</code> for MSVC and EDG

compilerCompiler work involvedCompiler work involved

enhancementSomething can be improvedSomething can be improved

Status: Open.

#5738 In microsoft/STL;

· StephanTLavavej opened on Sep 24, 2025

<code>&lt;algorithm&gt;</code>: Investigate further optimizations for <code>shuffle()</code> and <code>sample()</code>

performanceMust go fasterMust go faster

Status: Open.

#5736 In microsoft/STL;

· StephanTLavavej opened on Sep 22, 2025

libcxx: Flaky timing assumption in <code>std/thread/thread.semaphore/timed.pass.cpp</code>

testRelated to test codeRelated to test code

Status: Open.

#5733 In microsoft/STL;

· StephanTLavavej opened on Sep 22, 2025

<code>&lt;print&gt;</code>: Problem printing 128-bit integers

enhancementSomething can be improvedSomething can be improved

Status: Open.

#5727 In microsoft/STL;

· TymianekPL opened on Sep 17, 2025

Introduce <code>usual_23_matrix.lst</code>

testRelated to test codeRelated to test code

Status: Open.

#5723 In microsoft/STL;

· AlexGuteniev opened on Sep 16, 2025