[issue40574] segfault causing regression from PEP 573 implementation (PyQt5)

[STINNER Victor]

STINNER Victor <vstinner at python.org> added the comment:

I also with:

   ./configure --prefix=/opt/py39 --with-system-expat --with-system-ffi

I still cannot reproduce the crash. I tested Python at commit 1c2fa781560608aa4be50c748d4b3f403cfa5035. I tested on Fedora 32 (GCC 10.0.1).

$ /opt/py39/bin/python3.9 -m pip freeze
pyflakes==2.2.0
pyperf==2.0.0
PyQt5==5.14.2
PyQt5-sip==12.7.2

$ /opt/py39/bin/python3.9 -VV
Python 3.9.0a6+ (heads/master:1c2fa78156, May 10 2020, 11:37:38) 
[GCC 10.0.1 20200430 (Red Hat 10.0.1-0.14)]

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