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Nested replacement field in format string fails to compile on Clang + libstdc++

clang:frontendLanguage frontend issues, e.g. anything involving "Sema"Language frontend issues, e.g. anything involving "Sema"

confirmedVerified by a second partyVerified by a second party

libstdc++GNU libstdc++ C++ standard libraryGNU libstdc++ C++ standard library

regression

Status: Open.

#151371 In llvm/llvm-project;

· namniav opened on Jul 30, 2025

TSan seems to ignore std::shared_timed_mutex

compiler-rt:tsanThread sanitizerThread sanitizer

libstdc++GNU libstdc++ C++ standard libraryGNU libstdc++ C++ standard library

Status: Open.

#142370 In llvm/llvm-project;

· mhier opened on Jun 2, 2025

[clang] [[nodiscard]] ignored in std::function due to warning suppression in system headers

clang:frontendLanguage frontend issues, e.g. anything involving "Sema"Language frontend issues, e.g. anything involving "Sema"

libstdc++GNU libstdc++ C++ standard libraryGNU libstdc++ C++ standard library

Status: Open.

#141791 In llvm/llvm-project;

· avikivity opened on May 28, 2025

Document supported libstdc++ versions

clang:frontendLanguage frontend issues, e.g. anything involving "Sema"Language frontend issues, e.g. anything involving "Sema"

documentation

libstdc++GNU libstdc++ C++ standard libraryGNU libstdc++ C++ standard library

Status: Open.

Task

#139588 In llvm/llvm-project;

· cor3ntin opened on May 12, 2025

ABI break for <code>_Atomic</code> in C++23 when using libstdc++

ABIApplication Binary InterfaceApplication Binary Interface

c++23

clangClang issues not falling into any other categoryClang issues not falling into any other category

diverges-from:gccDoes the clang frontend diverge from gcc on this issueDoes the clang frontend diverge from gcc on this issue

libstdc++GNU libstdc++ C++ standard libraryGNU libstdc++ C++ standard library

Status: Open.

Bug

#132998 In llvm/llvm-project;

· zygoloid opened on Mar 25, 2025

Clang crash when using stdc++ features in OpenMP offloaded regions

backend:NVPTX

libstdc++GNU libstdc++ C++ standard libraryGNU libstdc++ C++ standard library

llvm:codegen

llvm:crash

openmp

Status: Open.

Bug

#132429 In llvm/llvm-project;

· KaruroChori opened on Mar 21, 2025

std::variant of inner class cannot be created if inner class has initializers

clang:frontendLanguage frontend issues, e.g. anything involving "Sema"Language frontend issues, e.g. anything involving "Sema"

conceptsC++20 conceptsC++20 concepts

cwg-issueAn issue that was filed to the Core Working GroupAn issue that was filed to the Core Working Group

libstdc++GNU libstdc++ C++ standard libraryGNU libstdc++ C++ standard library

Status: Open.

#124088 In llvm/llvm-project;

· tbleher opened on Jan 23, 2025

[Clang] FE crash on <code>std::greater&lt;void&gt;{}(ext_vector_type, ext_vector_type)</code>

clang:frontendLanguage frontend issues, e.g. anything involving "Sema"Language frontend issues, e.g. anything involving "Sema"

crashPrefer [crash-on-valid] or [crash-on-invalid]Prefer [crash-on-valid] or [crash-on-invalid]

libstdc++GNU libstdc++ C++ standard libraryGNU libstdc++ C++ standard library

Status: Open.

Bug

#119617 In llvm/llvm-project;

· aelovikov-intel opened on Dec 11, 2024

[clang++][precision] Cannot use float sqrt with cmath

floating-pointFloating-point mathFloating-point math

libstdc++GNU libstdc++ C++ standard libraryGNU libstdc++ C++ standard library

questionA question, not bug report. Check out https://llvm.org/docs/GettingInvolved.html instead!A question, not bug report. Check out https://llvm.org/docs/GettingInvolved.html instead!

Status: Open.

#118936 In llvm/llvm-project;

· whokeke opened on Dec 6, 2024

std::format create undefined-behavior [UndefinedBehaviorSanitizer] [c++20]

formatC++20 std::format or std::print, and anything related to themC++20 std::format or std::print, and anything related to them

libstdc++GNU libstdc++ C++ standard libraryGNU libstdc++ C++ standard library

Status: Open.

#118805 In llvm/llvm-project;

· nathan-in-code opened on Dec 5, 2024

[Clang] <code>-Wdangling</code> breaks when <code>-D_GLIBCXX_DEBUG</code> is used with <code>libstdc++</code>

clang:diagnosticsNew/improved warning or error message in Clang, but not in clang-tidy or static analyzerNew/improved warning or error message in Clang, but not in clang-tidy or static analyzer

libstdc++GNU libstdc++ C++ standard libraryGNU libstdc++ C++ standard library

Status: Open.

#109627 In llvm/llvm-project;

· dfrvfmst opened on Sep 23, 2024

[Clang] libstdc++’s <code>std::forward_like</code> doesn’t compile

c++23

clang:frontendLanguage frontend issues, e.g. anything involving "Sema"Language frontend issues, e.g. anything involving "Sema"

confirmedVerified by a second partyVerified by a second party

libstdc++GNU libstdc++ C++ standard libraryGNU libstdc++ C++ standard library

Status: Open.

#101614 In llvm/llvm-project;

· Sirraide opened on Aug 2, 2024