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[clang] crash in CodeGen with <code>-std=c89 -O1</code>

clang:codegenIR generation bugs: mangling, exceptions, etc.IR generation bugs: mangling, exceptions, etc.

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

Status: Open.

Bug

#170243 In llvm/llvm-project;

· k-arrows opened on Dec 2, 2025

[OpenCL][NVPTX] Don't set calling convention for OpenCL kernel

backend:AMDGPU

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

clang:codegenIR generation bugs: mangling, exceptions, etc.IR generation bugs: mangling, exceptions, etc.

Status: Open (in progress).

llvm/llvm-projectnumber 170170

#170170 In llvm/llvm-project;

· XChy opened on Dec 1, 2025

clang crashes with assertion failure in llvm::Align when __atomic_always_lock_free is called with size 0

clang:codegenIR generation bugs: mangling, exceptions, etc.IR generation bugs: mangling, exceptions, etc.

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

Status: Open.

Bug

#170139 In llvm/llvm-project;

· AbyssStaror opened on Dec 1, 2025

clang trunk: crash in IRBuilder::CreateCast / ScalarExprEmitter::VisitCastExpr for vector long double comparison return

clang:codegenIR generation bugs: mangling, exceptions, etc.IR generation bugs: mangling, exceptions, etc.

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

generated by fuzzer

Status: Open.

Bug

#170073 In llvm/llvm-project;

· Theaamadu opened on Dec 1, 2025

clang mislowers C function parameters that are arrays with <code>static</code> length into LLVM's <code>dereferenceable</code>

clang:codegenIR generation bugs: mangling, exceptions, etc.IR generation bugs: mangling, exceptions, etc.

miscompilation

Status: Open.

#170026 In llvm/llvm-project;

· ais523 opened on Nov 30, 2025

[ICE] Inline assembly with struct containing flexible array member as register operand

clang:codegenIR generation bugs: mangling, exceptions, etc.IR generation bugs: mangling, exceptions, etc.

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

inline-asm

Status: Open.

Bug

#169882 In llvm/llvm-project;

· AbyssStaror opened on Nov 28, 2025

[CoroEarly] Infer presplitcoroutine attribute for Switch-Resumed ABI

clang:codegenIR generation bugs: mangling, exceptions, etc.IR generation bugs: mangling, exceptions, etc.

coroutinesC++20 coroutinesC++20 coroutines

llvm:transforms

Status: Draft (not ready).

llvm/llvm-projectnumber 169866

#169866 In llvm/llvm-project;

· NewSigma opened on Nov 28, 2025

[SPIRV] Use AMDGPU ABI for AMDGCN flavoured SPIRV

backend:AMDGPU

backend:SPIR-V

clang:codegenIR generation bugs: mangling, exceptions, etc.IR generation bugs: mangling, exceptions, etc.

Status: Open (in progress).

llvm/llvm-projectnumber 169865

#169865 In llvm/llvm-project;

· AlexVlx opened on Nov 28, 2025

[clang] Add [[clang::returns_argument]]

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

clang:codegenIR generation bugs: mangling, exceptions, etc.IR generation bugs: mangling, exceptions, etc.

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

Status: Open (in progress).

llvm/llvm-projectnumber 169815

#169815 In llvm/llvm-project;

· philnik777 opened on Nov 27, 2025

[Clang] [C++26] Expansion Statements (Part 11: Final Touches and Tests)

c++26

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

clang:codegenIR generation bugs: mangling, exceptions, etc.IR generation bugs: mangling, exceptions, etc.

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

Status: Open (in progress).

llvm/llvm-projectnumber 169690

#169690 In llvm/llvm-project;

· Sirraide opened on Nov 26, 2025

[Clang] [C++26] Expansion Statements (Part 10: Expansion Limit)

c++26

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

clang:codegenIR generation bugs: mangling, exceptions, etc.IR generation bugs: mangling, exceptions, etc.

clang:driver'clang' and 'clang++' user-facing binaries. Not 'clang-cl''clang' and 'clang++' user-facing binaries. Not 'clang-cl'

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

Status: Open (in progress).

llvm/llvm-projectnumber 169689

#169689 In llvm/llvm-project;

· Sirraide opened on Nov 26, 2025

[Clang] [C++26] Expansion Statements (Part 9: Control Flow)

c++26

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

clang:codegenIR generation bugs: mangling, exceptions, etc.IR generation bugs: mangling, exceptions, etc.

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

Status: Open (in progress).

llvm/llvm-projectnumber 169688

#169688 In llvm/llvm-project;

· Sirraide opened on Nov 26, 2025