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[clang][bytecode] crash on large multi-dimensional array in new expression

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

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

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

regression:18Regression in 18 releaseRegression in 18 release

Status: Open.

Bug

#152951 In llvm/llvm-project;

· k-arrows opened on Aug 11, 2025

[Clang] Clang crashes when compiling nested lambdas with default parameter capture since <code>18.1.0</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

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

generated by fuzzer

lambdaC++11 lambda expressionsC++11 lambda expressions

regression:18Regression in 18 releaseRegression in 18 release

Status: Open.

Bug

#151813 In llvm/llvm-project;

· Xniao opened on Aug 2, 2025

[clang] Assertion `CAT &amp;&amp; "vla in literal type?"' failed.

c++20

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

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

regression:18Regression in 18 releaseRegression in 18 release

Status: Open.

Bug

#151716 In llvm/llvm-project;

· k-arrows opened on Aug 1, 2025

[clang] crash on invalid lambda default argument in templated function

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:18Regression in 18 releaseRegression in 18 release

Status: Open.

Bug

#150738 In llvm/llvm-project;

· k-arrows opened on Jul 26, 2025

Clang crashes: "Out-of-bounds Bit access."

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:18Regression in 18 releaseRegression in 18 release

Status: Open.

Bug

#136813 In llvm/llvm-project;

· wangtz0607 opened on Apr 23, 2025

Crash in c++20 code when lambda is present

c++20

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

lambdaC++11 lambda expressionsC++11 lambda expressions

regression:18Regression in 18 releaseRegression in 18 release

Status: Open.

Bug

#126938 In llvm/llvm-project;

· emmenlau opened on Feb 12, 2025

clang++ 19.1.7 segfault in isPackExpansion()

c++20

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:18Regression in 18 releaseRegression in 18 release

Status: Open.

Bug

#124471 In llvm/llvm-project;

· jehelset opened on Jan 26, 2025

[Clang] Crash when mangling lambda with requires clause

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

conceptsC++20 conceptsC++20 concepts

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]

lambdaC++11 lambda expressionsC++11 lambda expressions

regression:18Regression in 18 releaseRegression in 18 release

Status: Open.

Bug

#123854 In llvm/llvm-project;

· MagentaTreehouse opened on Jan 21, 2025

Crash initializing a static constexpr member of incomplete type in a templated class

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

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

regression:18Regression in 18 releaseRegression in 18 release

Status: Open.

Bug

#120371 In llvm/llvm-project;

· ArcheCadia opened on Dec 18, 2024

Lambda converted to function pointer converted to boolean in the requires clause of a lambda causes a segfault

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]

regression:18Regression in 18 releaseRegression in 18 release

Status: Open.

Bug

#119601 In llvm/llvm-project;

· Bu11etmagnet opened on Dec 11, 2024

[clang] Assertion `ArgIdx &lt; Args.size() &amp;&amp; "no argument for this arg conversion"' failed.

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

generated by fuzzer

regression:18Regression in 18 releaseRegression in 18 release

Status: Open.

#115311 In llvm/llvm-project;

· yijan4845 opened on Nov 7, 2024

[Clang][ICE] crashes when enum class is based on a decltype depending on a static class member

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

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

regression:18Regression in 18 releaseRegression in 18 release

Status: Open.

#114124 In llvm/llvm-project;

· SchrodingerZhu opened on Oct 29, 2024