Data race in `Modules/cjkcodecs/multibytecodec.c`
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extension-modules
topic-free-threading
type-bug
- Dominant language
- Python
- Stars
- 77.2k
- Forks
- 35.9k
- PR merge metrics
- PR metrics pending
Description
Bug report
Bug description:
Functions have MultibyteIncrementalEncoderObject and MultibyteIncrementalDecoderObject argument are not using @critical_section, therefore could have data race on these objects. For more details please see the TSAN-0001 report from parent issue #153852.
CPython versions tested on:
CPython main branch
Operating systems tested on:
No response
Linked PRs
- gh-154578
Contributor guide
First steps
- Read the whole issue, then the project's contributing guide.
- Comment on the issue to say you are picking it up — it saves two people doing the same work.
- Fork the repository and make your change on a branch.
- Open a pull request that references the issue number.
Research direction
Start with Modules/cjkcodecs/multibytecodec.c and the TSAN-0001 report linked from parent issue #153852. Review the functions taking MultibyteIncrementalEncoderObject and MultibyteIncrementalDecoderObject arguments, then inspect linked PR gh-154578. Done means the reported data race is addressed and the relevant checks pass.
Written by the indexing model from the issue text.
Assessment
- Tech stack
- c
- Domain
- backend
- Issue type
- Bug
- Difficulty
- 3/5
- Estimated time
- 1-2 days
- Activity status
- Stale
- Clarity
- Clearly specified
- Newbie friendliness
- 25/100