[issue43660] Segmentation fault when overriding sys.stderr

[Pablo Galindo Salgado]

Pablo Galindo Salgado <pablogsal at gmail.com> added the comment:

The problem is that https://github.com/python/cpython/blob/master/Python/pythonrun.c#L1074 doesn't take a strong reference to sys.stderr but code underneath can potentially release the GIL and remove the reference that keeps the object alive.

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<https://bugs.python.org/issue43660>
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