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state:open label:clang:codegen type:Bug
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label
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clang:codegen
type
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state:open label:clang:codegen type:Bug
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Closed
clang is crash
clang:codegen
IR generation bugs: mangling, exceptions, etc.
IR generation bugs: mangling, exceptions, etc.
crash
Prefer [crash-on-valid] or [crash-on-invalid]
Prefer [crash-on-valid] or [crash-on-invalid]
needs-reduction
Large reproducer that should be reduced into a simpler form
Large reproducer that should be reduced into a simpler form
Status: Open.
Bug
#165152
In llvm/llvm-project;
·
akemihomura0105
opened
on Oct 26, 2025
[clang][bytecode] CodeGen crash in presence of <code>-fexperimental-new-constant-interpreter</code>
clang:bytecode
Issues for the clang bytecode constexpr interpreter
Issues for the clang bytecode constexpr interpreter
clang:codegen
IR generation bugs: mangling, exceptions, etc.
IR generation bugs: mangling, exceptions, etc.
crash
Prefer [crash-on-valid] or [crash-on-invalid]
Prefer [crash-on-valid] or [crash-on-invalid]
Status: Open.
Bug
#165125
In llvm/llvm-project;
·
k-arrows
opened
on Oct 26, 2025
[clang] Assertion `CGF.getContext().hasSameUnqualifiedType(E->getSubExpr()->getType(), E->getType()) && "Implicit cast types must be compatible"' failed.
clang:codegen
IR generation bugs: mangling, exceptions, etc.
IR generation bugs: mangling, exceptions, etc.
crash
Prefer [crash-on-valid] or [crash-on-invalid]
Prefer [crash-on-valid] or [crash-on-invalid]
Status: Open.
Bug
#164062
In llvm/llvm-project;
·
k-arrows
opened
on Oct 18, 2025
[clang] -fsanitize=undefined causes Assertion `(!isa<llvm::Constant>(EvaluatedGEP.TotalOffset) || EvaluatedGEP.OffsetOverflows == Builder.getFalse()) && "If the offset got constant-folded, we don't expect that there was an " "overflow."' failed.
clang:codegen
IR generation bugs: mangling, exceptions, etc.
IR generation bugs: mangling, exceptions, etc.
crash
Prefer [crash-on-valid] or [crash-on-invalid]
Prefer [crash-on-valid] or [crash-on-invalid]
Status: Open.
Bug
#163033
In llvm/llvm-project;
·
k-arrows
opened
on Oct 12, 2025
[clang] -fsanitize=undefined causes Assertion `vlaSize && "no size for VLA!"' failed.
clang:codegen
IR generation bugs: mangling, exceptions, etc.
IR generation bugs: mangling, exceptions, etc.
crash
Prefer [crash-on-valid] or [crash-on-invalid]
Prefer [crash-on-valid] or [crash-on-invalid]
Status: Open.
Bug
#163032
In llvm/llvm-project;
·
k-arrows
opened
on Oct 12, 2025
[clang] fatal error: error in backend: Cannot implicitly convert a scalable size to a fixed-width size in <code>TypeSize::operator ScalarTy()</code>
clang:codegen
IR generation bugs: mangling, exceptions, etc.
IR generation bugs: mangling, exceptions, etc.
crash
Prefer [crash-on-valid] or [crash-on-invalid]
Prefer [crash-on-valid] or [crash-on-invalid]
Status: Open.
Bug
#162973
In llvm/llvm-project;
·
k-arrows
opened
on Oct 11, 2025
[clang] Assertion `UD.shadow_size() && "We shouldn't be codegening an invalid UsingEnumDecl" " containing no decls"' failed.
clang:codegen
IR generation bugs: mangling, exceptions, etc.
IR generation bugs: mangling, exceptions, etc.
crash
Prefer [crash-on-valid] or [crash-on-invalid]
Prefer [crash-on-valid] or [crash-on-invalid]
Status: Open.
Bug
#162485
In llvm/llvm-project;
·
k-arrows
opened
on Oct 8, 2025
Assertion `V && "Dereferencing deleted ValueHandle"' failed.
clang:codegen
IR generation bugs: mangling, exceptions, etc.
IR generation bugs: mangling, exceptions, etc.
crash
Prefer [crash-on-valid] or [crash-on-invalid]
Prefer [crash-on-valid] or [crash-on-invalid]
Status: Open.
Bug
#162228
In llvm/llvm-project;
·
k-arrows
opened
on Oct 7, 2025
[Clang] <code>-mlink-builtin-bitcode</code> may change FP32 denormal mode of linked module
backend:NVPTX
clang:codegen
IR generation bugs: mangling, exceptions, etc.
IR generation bugs: mangling, exceptions, etc.
Status: Open.
Bug
#161342
In llvm/llvm-project;
·
Maetveis
opened
on Sep 30, 2025
[clang] Assertion `getContext().hasSameUnqualifiedType( AlignValT->castAsEnumDecl()->getIntegerType(), sizeType) && "wrong type for alignment parameter"' failed.
clang:codegen
IR generation bugs: mangling, exceptions, etc.
IR generation bugs: mangling, exceptions, etc.
crash
Prefer [crash-on-valid] or [crash-on-invalid]
Prefer [crash-on-valid] or [crash-on-invalid]
Status: Open.
Bug
#161167
In llvm/llvm-project;
·
k-arrows
opened
on Sep 29, 2025
[X86] Unexpected builtin UNREACHABLE executed at /root/llvm-project/llvm/tools/clang/lib/CodeGen/TargetBuiltins/X86.cpp:2681!
clang:codegen
IR generation bugs: mangling, exceptions, etc.
IR generation bugs: mangling, exceptions, etc.
crash
Prefer [crash-on-valid] or [crash-on-invalid]
Prefer [crash-on-valid] or [crash-on-invalid]
Status: Open.
Bug
#161139
In llvm/llvm-project;
·
k-arrows
opened
on Sep 29, 2025
[clang] [crash] crashed during compilation of a module file
clang:codegen
IR generation bugs: mangling, exceptions, etc.
IR generation bugs: mangling, exceptions, etc.
clang:modules
C++20 modules and Clang Header Modules
C++20 modules and Clang Header Modules
crash
Prefer [crash-on-valid] or [crash-on-invalid]
Prefer [crash-on-valid] or [crash-on-invalid]
needs-reduction
Large reproducer that should be reduced into a simpler form
Large reproducer that should be reduced into a simpler form
Status: Open.
Bug
#159146
In llvm/llvm-project;
·
mikomikotaishi
opened
on Sep 16, 2025
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