[issue46070] [subinterpreters] asyncio crash when importing _asyncio in subinterpreter (Python 3.8 regression)

[STINNER Victor]

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

Even with PR 30454, I can still reproduce the crash on Python 3.9 (randomly, it takes a few attempts to reproduce the crash):

vstinner at DESKTOP-DK7VBIL C:\vstinner\python\3.9>python -X dev win_py399_crash_reproducer.py 
Running Debug|x64 interpreter...
exit subinterpreter
exit subinterpreter
exit subinterpreter
Windows fatal exception: access violation

Thread 0x00002230 (most recent call first):
<no Python frame>

Thread 0x00002124 (most recent call first):
  File "C:\vstinner\python\3.9\win_py399_crash_reproducer.py", line 13 in doIt
  File "C:\vstinner\python\3.9\lib\threading.py", line 910 in run
  File "C:\vstinner\python\3.9\lib\threading.py", line 973 in _bootstrap_inner
  File "C:\vstinner\python\3.9\lib\threading.py", line 930 in _bootstrap

Current thread 0x000027f0 (most recent call first):
  File "C:\vstinner\python\3.9\win_py399_crash_reproducer.py", line 13 in doIt
  File "C:\vstinner\python\3.9\lib\threading.py", line 910 in run
  File "C:\vstinner\python\3.9\lib\threading.py", line 973 in _bootstrap_inner
  File "C:\vstinner\python\3.9\lib\threading.py", line 930 in _bootstrap

Thread 0x00001c18 (most recent call first):
  File "C:\vstinner\python\3.9\lib\threading.py", line 312 in wait
  File "C:\vstinner\python\3.9\lib\threading.py", line 574 in wait
  File "C:\vstinner\python\3.9\lib\threading.py", line 897 in start
  File "C:\vstinner\python\3.9\win_py399_crash_reproducer.py", line 19 in <module>

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Python tracker <report at bugs.python.org>
<https://bugs.python.org/issue46070>
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