Avoid ctypes callbacks when listing libraries on Linux. - #242
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Importing ctypes.util or using CFUNCTYPE with dl_iterate_phdr creates libffi closures that can abort after fork on some Linux libffi builds. Enumerate libraries from /proc/self/maps and load libc via CDLL(None). Co-authored-by: Cursor <cursoragent@cursor.com>
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Workaround for #225 on some system:
Importing ctypes.util or using CFUNCTYPE with dl_iterate_phdr creates libffi closures that can abort after fork on some Linux libffi builds. Enumerate libraries from /proc/self/maps and load libc via CDLL(None).
Disclaimer: this PR was vibecoded although I did ask the agent to use a container to check that it actually workaround the problem on AlmaLinux 9.8 (Olive Jaguar) with libffi-3.4.2-8.el9.
Still, I find the extra complexity in threadpoolctl not justified. I would rather wait for upstream ctypes to fix the problem or wait for all impacted linux distributions to upgrade to a newer libffi.