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[Clang] Assertion failure in DiagnoseImmediateEscalatingReason: <code>FD-&gt;hasBody() &amp;&amp; "expected the function to have a body"</code>

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

Status: Open.

#176710 In llvm/llvm-project;

· Xniao opened on Jan 19, 2026

Segmentation fault in SPEChpc 2021 sph_exa_t with LTO enabled

new issue

Status: Open.

#176696 In llvm/llvm-project;

· m-saito-fj opened on Jan 19, 2026

[LLC] CodeGenPrepare::runOnFunction hanging because of Bitcast and Phi

hangCompiler hang (infinite loop)Compiler hang (infinite loop)

llvm:codegen

Status: Open.

Bug

#176688 In llvm/llvm-project;

· emu1200tra opened on Jan 19, 2026

Miscompilation during memcpy-to-load conversion which reads uninitialized bytes as poison

generated by fuzzer

llvm:optimizations

miscompilation

Status: Open.

#176685 In llvm/llvm-project;

· sairam2661 opened on Jan 19, 2026

Miscompilation at -O3 with profiled data using PGO

llvm:optimizations

miscompilation

PGOProfile Guided OptimizationsProfile Guided Optimizations

Status: Open.

#176682 In llvm/llvm-project;

· helloqirun opened on Jan 19, 2026

[LLVM] Crash in upgradeAVX512MaskToSelect - "Unexpected intrinsic"

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

llvm:ir

Status: Open.

Bug

#176675 In llvm/llvm-project;

· sairam2661 opened on Jan 19, 2026

[LLVM] Crash in UpgradeIntrinsicCall - "Use still stuck around after Def is destroyed" for llvm.x86.sse2.pshuflw

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

llvm:ir

Status: Open.

Bug

#176674 In llvm/llvm-project;

· sairam2661 opened on Jan 19, 2026

parameter of type libstdc++ std::experimental::simd of 4 x u64 is passed by implicit pointer in clang 21

ABIApplication Binary InterfaceApplication Binary Interface

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

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

regression:21Regression in 21 releaseRegression in 21 release

Status: Open.

#176670 In llvm/llvm-project;

· ImpleLee opened on Jan 18, 2026

cannot select backend error on a variable wrapped in <code>Constant&lt;T&gt;</code> and specified address space

llvm:SelectionDAGSelectionDAGISel as wellSelectionDAGISel as well

openmp

Status: Open.

#176667 In llvm/llvm-project;

· karolzwolak opened on Jan 18, 2026

[LoopVectorize] Assertion `isValidElementType(ElementType) &amp;&amp; "Element type of a VectorType must be an integer..."' failed.

crash-on-valid

generated by fuzzer

vectorizers

Status: Open.

Bug

#176663 In llvm/llvm-project;

· dtcxzyw opened on Jan 18, 2026

Request Triage Role for TatyanaDoubts

infra:commit-access-request

Status: Open.

#176657 In llvm/llvm-project;

· TatyanaDoubts opened on Jan 18, 2026

[GVN] Missing store to load forwarding for memset.pattern

llvm:optimizations

missed-optimization

Status: Open.

#176655 In llvm/llvm-project;

· nikic opened on Jan 18, 2026