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Missed optimisation/UBSAN in chacha reference implementation

compiler-rt:ubsanUndefined behavior sanitizerUndefined behavior sanitizer

Status: Open.

#144964 In llvm/llvm-project;

· nabijaczleweli opened on Jun 19, 2025

ubsan has stopped identifying a mismatch between static and dynamic type of an argument to typeid() and dynamic_cast

compiler-rt:ubsanUndefined behavior sanitizerUndefined behavior sanitizer

Status: Open.

#143065 In llvm/llvm-project;

· ojhunt opened on Jun 6, 2025

std::sort triggers negate-overflow ubsan

compiler-rt:ubsanUndefined behavior sanitizerUndefined behavior sanitizer

libc++libc++ C++ Standard Library. Not GNU libstdc++. Not libc++abi.libc++ C++ Standard Library. Not GNU libstdc++. Not libc++abi.

Status: Open.

#141550 In llvm/llvm-project;

· kongy opened on May 27, 2025

[clang] lsan is ignored when used with ubsan

compiler-rt:lsanLeak sanitizerLeak sanitizer

compiler-rt:ubsanUndefined behavior sanitizerUndefined behavior sanitizer

Status: Open.

#138982 In llvm/llvm-project;

· jonathanpoelen opened on May 7, 2025

ubsanitizer does not respect file-prefix-map in messages

compiler-rt:ubsanUndefined behavior sanitizerUndefined behavior sanitizer

Status: Open.

#138044 In llvm/llvm-project;

· apache-hb opened on Apr 30, 2025

Clang 20.1.3 UBSAN link on Windows fails on LLVM version update

build-problem

compiler-rt:ubsanUndefined behavior sanitizerUndefined behavior sanitizer

platform:windows

Status: Open.

#137762 In llvm/llvm-project;

· MisterBMisterB opened on Apr 29, 2025

UBSAN is very slow when using print_stacktrace=1

compiler-rt:ubsanUndefined behavior sanitizerUndefined behavior sanitizer

performance

Status: Open.

#135943 In llvm/llvm-project;

· mariadb-RoelVandePaar opened on Apr 16, 2025

UBSan should not warn on integer overflow with downcast or bitwise-AND mask

compiler-rt:ubsanUndefined behavior sanitizerUndefined behavior sanitizer

Status: Open.

#133497 In llvm/llvm-project;

· Explorer09 opened on Mar 28, 2025

excessive compile-time and memory usage with <code>-fsanitize=undefined</code>

compiler-rt:ubsanUndefined behavior sanitizerUndefined behavior sanitizer

incompleteIssue not complete (e.g. missing a reproducer, build arguments, etc.)Issue not complete (e.g. missing a reproducer, build arguments, etc.)

slow-compile

Status: Open.

#132554 In llvm/llvm-project;

· firewave opened on Mar 22, 2025

ubsan: Runtime function suppression for implicit-integer-sign-change does not work unless -fno-inline

compiler-rt:ubsanUndefined behavior sanitizerUndefined behavior sanitizer

Status: Open.

#132533 In llvm/llvm-project;

· maflcko opened on Mar 22, 2025

clang optimization ignores UB (overflow) + standard library bug

chronoIssues related to std::chronoIssues related to std::chrono

clang:diagnosticsNew/improved warning or error message in Clang, but not in clang-tidy or static analyzerNew/improved warning or error message in Clang, but not in clang-tidy or static analyzer

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

compiler-rt:ubsanUndefined behavior sanitizerUndefined behavior sanitizer

libc++libc++ C++ Standard Library. Not GNU libstdc++. Not libc++abi.libc++ C++ Standard Library. Not GNU libstdc++. Not libc++abi.

undefined behaviour

Status: Open.

#130229 In llvm/llvm-project;

· kelbon opened on Mar 7, 2025

More granular UBSAN Frame based filtering

compiler-rt:ubsanUndefined behavior sanitizerUndefined behavior sanitizer

Status: Open.

#118150 In llvm/llvm-project;

· mariadb-RoelVandePaar opened on Nov 30, 2024