[$] Using LLMs to find Python C-extension bugs
Date:
Tue, 21 Apr 2026 14:24:53 +0000
Description:
The open-source world is currently awash in
reports of LLM-discovered bugs and vulnerabilities , which makes for a lot more
work for maintainers, but many of the current crop are being reported responsibly with an eye toward minimizing that impact. A recent report on an effort to systematically find bugs in Python extensions
written in C has followed that approach. Hobbyist Daniel Diniz used Claude Code to find more than 500 bugs of various sorts across nearly a million
lines of code in 44 extensions; he has been working with maintainers to get fixes upstream and his methodology serves as a great example of how to keep
the human in the loopand the maintainers out of burnoutwhen employing LLMs.
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Link to news story:
https://lwn.net/Articles/1067234/
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