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llvm / llvm-project / 08de00ad22e71d74bcfdecd61502d0caea7eefb0
commit08de00ad22e71d74bcfdecd61502d0caea7eefb0[log] [tgz]
authorMarco Elver <elver@google.com>Tue Sep 23 09:57:35 2025 +0200
committerGitHub <noreply@github.com>Tue Sep 23 09:57:35 2025 +0200
treebd5a20ecda5e8a4b56bda77edd41688c59250ba0
parent242a1e2fb1b2ddefc8dcde73e22ce3f06f6a8188 [diff]
Thread Safety Analysis: Fix recursive capability alias resolution (#159921)

Fix a false positive in thread safety alias analysis caused by incorrect
late resolution of aliases. The analysis previously failed to
distinguish between an alias and its defining expression; reassigning a
variable within that expression (e.g., `ptr` in `alias = ptr->field`)
would incorrectly change the dependent alias as well.

The fix is to properly use LocalVariableMap::lookupExpr's updated
context in a recursive lookup.

Reported-by: Christoph Hellwig <hch@lst.de>
Link: https://lkml.kernel.org/r/20250919140803.GA23745@lst.de
4 files changed
tree: bd5a20ecda5e8a4b56bda77edd41688c59250ba0
  1. .ci/
  2. .github/
  3. bolt/
  4. clang/
  5. clang-tools-extra/
  6. cmake/
  7. compiler-rt/
  8. cross-project-tests/
  9. flang/
  10. flang-rt/
  11. libc/
  12. libclc/
  13. libcxx/
  14. libcxxabi/
  15. libsycl/
  16. libunwind/
  17. lld/
  18. lldb/
  19. llvm/
  20. llvm-libgcc/
  21. mlir/
  22. offload/
  23. openmp/
  24. orc-rt/
  25. polly/
  26. runtimes/
  27. third-party/
  28. utils/
  29. .clang-format
  30. .clang-format-ignore
  31. .clang-tidy
  32. .git-blame-ignore-revs
  33. .gitattributes
  34. .gitignore
  35. .mailmap
  36. CODE_OF_CONDUCT.md
  37. CONTRIBUTING.md
  38. LICENSE.TXT
  39. pyproject.toml
  40. README.md
  41. SECURITY.md
README.md

The LLVM Compiler Infrastructure

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Welcome to the LLVM project!

This repository contains the source code for LLVM, a toolkit for the construction of highly optimized compilers, optimizers, and run-time environments.

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