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[clang] Assertion failure in getASTRecordLayout when declaring global register variable with incomplete struct type

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

crash-on-invalid

inline-asm

regression

Status: Open.

Bug

#169792 In llvm/llvm-project;

· AbyssStaror opened on Nov 27, 2025

[clang] _Pragma() in macro interfering with macro return type

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

regression

Status: Open.

#169494 In llvm/llvm-project;

· alexveden opened on Nov 25, 2025

Compile time regression after #154336

llvm:instcombineCovers the InstCombine, InstSimplify and AggressiveInstCombine passesCovers the InstCombine, InstSimplify and AggressiveInstCombine passes

regression

slow-compile

Status: Open.

#168849 In llvm/llvm-project;

· piotrAMD opened on Nov 20, 2025

[clang] Optimisation regression in trunk for x86-64 AVX2 shuffle

backend:X86

regression

Status: Open.

#165813 In llvm/llvm-project;

· desal opened on Oct 31, 2025

[Clang][Regression] Crash on invalid <code>int decltype {}</code>

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

crash-on-invalid

regression

Status: Open.

Bug

#165246 In llvm/llvm-project;

· MagentaTreehouse opened on Oct 27, 2025

[Clang 22][ICE] "cannot compile this l-value expression yet" when using std::array inside consteval lambda

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

confirmedVerified by a second partyVerified by a second party

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

needs-reductionLarge reproducer that should be reduced into a simpler formLarge reproducer that should be reduced into a simpler form

regression

Status: Open.

Bug

#165039 In llvm/llvm-project;

· Prevter opened on Oct 24, 2025

clang crashes at -O1 and above on x86_64-linux-gnu: error in backend: Broken function found, compilation aborted!

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

confirmedVerified by a second partyVerified by a second party

regression

Status: Open.

#164140 In llvm/llvm-project;

· zhendongsu opened on Oct 19, 2025

[flang] Regression with Fujitsu test 0727_0008

flang:ir

regression

Status: Open.

Bug

#157763 In llvm/llvm-project;

· eugeneepshteyn opened on Sep 9, 2025

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

[Clang] Clang crashed when compiling with <code>-mllvm -print-changed=dot-cfg</code>

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

llvm:optimizations

regression

Status: Open.

Bug

#148579 In llvm/llvm-project;

· cabbaken opened on Jul 14, 2025

[clang] Assertion "Type &lt;= 3 &amp;&amp; "unexpected type". failed in bool {anonymous}::IntExprEvaluator::VisitBuiltinCallExpr(const clang::CallExpr*, unsigned int)

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

crash-on-invalid

generated by fuzzer

regression

Status: Open.

Bug

#147009 In llvm/llvm-project;

· Rush10233 opened on Jul 4, 2025

clang crash for fopenmp statement(parallel for) inside lambda function while generating llvm-ir

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

crash-on-valid

openmp

regression

Status: Open.

Bug

#146335 In llvm/llvm-project;

· suganyat14 opened on Jun 30, 2025