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[Clang] unused <code>std::set</code> require <code>-flto</code> to be optimized out

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

Status: Open.

#183994 In llvm/llvm-project;

· tinnamchoi opened on Mar 1, 2026

Do you still need commit access?

infra:commit-access

Status: Open.

#183986 In llvm/llvm-project;

· github-actions opened on Mar 1, 2026

[Clang] assertion failure on invalid template template parameter syntax

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

Status: Open.

#183983 In llvm/llvm-project;

· YuchangSu opened on Mar 1, 2026

[clang] Crash in C mode with -fblocks after invalid global __block declaration

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

crash-on-invalid

Status: Open.

Bug

#183974 In llvm/llvm-project;

· k-arrows opened on Mar 1, 2026

Request Commit Access For Arya-Golkari

infra:commit-access-request

Status: Open.

#183973 In llvm/llvm-project;

· Arya-Golkari opened on Mar 1, 2026

[SLP] Missed SLP Vectorize Regression at -O3 (trunk vs 15)

backend:X86

llvm:SLPVectorizer

missed-optimization

Status: Open.

Feature

#183956 In llvm/llvm-project;

· zxt5 opened on Feb 28, 2026

[arm32] [bug] Weak Symbols as Function Pointer Fails to be overrided by Strong Symbol

backend:ARM

Status: Open.

#183916 In llvm/llvm-project;

· Zhenhang1213 opened on Feb 28, 2026

[libc++ 22] After updating to llvm-22.1.0 both llvm-20 and llvm-21 fails to build with static assertion failed due to requirement

libc++libc++ C++ Standard Library. Not GNU libstdc++. Not libc++abi.libc++ C++ Standard Library. Not GNU libstdc++. Not libc++abi.

Status: Open.

#183908 In llvm/llvm-project;

· listout opened on Feb 28, 2026

[IndVar] Miscompile due to removal of an infinite loop

loopoptim

miscompilation

Status: Open.

#183906 In llvm/llvm-project;

· pitust opened on Feb 28, 2026

[RISCV] Migrate llvm.riscv.clmul to llvm.clmul

backend:RISC-V

Status: Open.

#183904 In llvm/llvm-project;

· RKSimon opened on Feb 28, 2026

[C++20 Modules] [Regression] lambda has different definitions in different modules

clang:modulesC++20 modules and Clang Header ModulesC++20 modules and Clang Header Modules

lambdaC++11 lambda expressionsC++11 lambda expressions

Status: Open.

#183902 In llvm/llvm-project;

· TroyKomodo opened on Feb 28, 2026

[LifetimeSafety] Assertion `Src &amp;&amp; "Dst is non-null but Src is null. List must have the same length"' failed.

clang:temporal-safetyIssue/FR relating to the lifetime analysis in Clang (-Wdangling, -Wreturn-local-addr)Issue/FR relating to the lifetime analysis in Clang (-Wdangling, -Wreturn-local-addr)

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

Status: Open.

Bug

#183895 In llvm/llvm-project;

· k-arrows opened on Feb 28, 2026