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llvm / llvm-project / cbf10bcbb3f43ec035d6ba9cb2f23d7ea7c34c1f
commitcbf10bcbb3f43ec035d6ba9cb2f23d7ea7c34c1f[log] [tgz]
authorDaniel Rodríguez Troitiño <danielrodriguez@meta.com>Fri Aug 29 17:08:35 2025 -0700
committerGitHub <noreply@github.com>Fri Aug 29 17:08:35 2025 -0700
treed63ee1e096898faab9f9d9e2905f2bb946794b8f
parent1532116a25573bfc12a43894928974cddb8660e1 [diff]
[lld-macho] Avoid infinite recursion when parsing corrupted export tries (#152569)

If an export trie is encoded incorrectly, and one of the children
offsets points back to one of the nodes earlier in the serialization,
the current code will end up in an infinite recursion, and eventually
fail exhausting the available memory.

The failure can be avoided if, before recursing, one checks that the
offset is valid, that is, that the offset is beyond the current
position. This is similar to a check done by llvm-objdump which reports
the trie being corrupted.
5 files changed
tree: d63ee1e096898faab9f9d9e2905f2bb946794b8f
  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.

The LLVM project has multiple components. The core of the project is itself called “LLVM”. This contains all of the tools, libraries, and header files needed to process intermediate representations and convert them into object files. Tools include an assembler, disassembler, bitcode analyzer, and bitcode optimizer.

C-like languages use the Clang frontend. This component compiles C, C++, Objective-C, and Objective-C++ code into LLVM bitcode -- and from there into object files, using LLVM.

Other components include: the libc++ C++ standard library, the LLD linker, and more.

Getting the Source Code and Building LLVM

Consult the Getting Started with LLVM page for information on building and running LLVM.

For information on how to contribute to the LLVM project, please take a look at the Contributing to LLVM guide.

Getting in touch

Join the LLVM Discourse forums, Discord chat, LLVM Office Hours or Regular sync-ups.

The LLVM project has adopted a code of conduct for participants to all modes of communication within the project.