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Clang segfault parsing yyjson::caster<std::vector<bool>>

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

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

Status: Open.

Bug

#176308 In llvm/llvm-project;

· thirtythreeforty opened on Jan 16, 2026

[LifetimeSafety] UAFs via indirect invocations are not diagnosed, as lifetimebound constraint information are lost when converted to function pointer

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)

Status: Open.

#176307 In llvm/llvm-project;

· SidneyCogdill opened on Jan 16, 2026

[LifetimeSafety] lifetime annotation suggestion and inference does not work with <code>-std=c++23</code> or <code>-std=c++26</code>

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)

Status: Open.

#176292 In llvm/llvm-project;

· SidneyCogdill opened on Jan 16, 2026

[LifetimeSafety] UAFs via pointer-to-pointer and reference-to-pointer dereferencing are not diagnosed

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)

Status: Open.

#176291 In llvm/llvm-project;

· SidneyCogdill opened on Jan 16, 2026

[Flang] Assignment to a C_PTR type variable causes an internal error at a reference of SHAPE intrinsic function

flang:ir

Status: Open.

#176284 In llvm/llvm-project;

· boo-aboutme opened on Jan 16, 2026

[Flang] Question on SUM result differences between -O0 and -O1

flangFlang issues not falling into any other categoryFlang issues not falling into any other category

Status: Open.

#176282 In llvm/llvm-project;

· nakazawa-fj opened on Jan 16, 2026

[Flang] Power operator (<code>**</code>) result differs between -O0 and -O1 when the exponent is a variable

flangFlang issues not falling into any other categoryFlang issues not falling into any other category

Status: Open.

#176281 In llvm/llvm-project;

· nakazawa-fj opened on Jan 16, 2026

[Flang][OpenMP] Compilation error when type-list in declare reduction directive is a derived type accessed by use association

flang:frontend

flang:openmp

Status: Open.

#176279 In llvm/llvm-project;

· ohno-fj opened on Jan 16, 2026

[Flang][OpenMP] Compilation error when type-list in declare reduction directive is derived type name

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

flang:ir

flang:openmp

Status: Open.

Bug

#176278 In llvm/llvm-project;

· ohno-fj opened on Jan 16, 2026

[flang] Segmentation fault when parsing nested loop in OpenMP region

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

flang:ir

flang:openmp

Status: Open.

Bug

#176275 In llvm/llvm-project;

· ivan-pi opened on Jan 16, 2026

[clang][bytecode] SIGSEGV where shift count is negative

clang:bytecodeIssues for the clang bytecode constexpr interpreterIssues for the clang bytecode constexpr interpreter

regression:19Regression in 19 releaseRegression in 19 release

Status: Open.

Bug

#176271 In llvm/llvm-project;

· k-arrows opened on Jan 15, 2026

clang-tidy: modernize-use-using wrongly modifies typedef of parenthesized function

clang-tidy

invalid-code-generationTool (e.g. clang-format) produced invalid code that no longer compilesTool (e.g. clang-format) produced invalid code that no longer compiles

Status: Open.

Bug

#176267 In llvm/llvm-project;

· e-kwsm opened on Jan 15, 2026