[issue31426] Segfault during GC of generator object; invalid gi_frame?

Tue Sep 12 05:22:31 EDT 2017

STINNER Victor added the comment:

Python 3.5 moved to security only fixes recently, it doesn't accept bug fixes anymore:
https://devguide.python.org/#status-of-python-branches

It would be nice to Python 3.5.4 at least, or better: Python 3.6.x.

> (gdb) print *gen->gi_frame
> $112 = {ob_base = {ob_base = {ob_refcnt = 2, ob_type = 0x0}, ob_size = 0}, f_back = 0x0, f_code = 0xca3e4fd8950fef91, ...

ob_type should never be NULL for an object still reachable and with a reference count different than zero. It seems like a bug in a C extension. It would help to test your application on a Python compiled in debug mode.

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nosy: +haypo

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