[issue30604] co_extra_freefuncs is stored thread locally and can lead to crashes

[STINNER Victor]

STINNER Victor added the comment:

If a test requires ctypes, please skip your test if ctypes is missing. The new test fails on the "x86 Ubuntu Shared 3.x" buildbot which lacks the _ctypes module (for an unknown reason, but does it really matter here? ;-)).

http://buildbot.python.org/all/builders/x86%20Ubuntu%20Shared%203.x/builds/924/steps/test/logs/stdio

test test_code crashed -- Traceback (most recent call last):
  File "/srv/buildbot/buildarea/3.x.bolen-ubuntu/build/Lib/test/libregrtest/runtest.py", line 156, in runtest_inner
    the_module = importlib.import_module(abstest)
  File "/srv/buildbot/buildarea/3.x.bolen-ubuntu/build/Lib/importlib/__init__.py", line 127, in import_module
    return _bootstrap._gcd_import(name[level:], package, level)
  File "<frozen importlib._bootstrap>", line 978, in _gcd_import
  File "<frozen importlib._bootstrap>", line 961, in _find_and_load
  File "<frozen importlib._bootstrap>", line 950, in _find_and_load_unlocked
  File "<frozen importlib._bootstrap>", line 655, in _load_unlocked
  File "<frozen importlib._bootstrap_external>", line 679, in exec_module
  File "<frozen importlib._bootstrap>", line 205, in _call_with_frames_removed
  File "/srv/buildbot/buildarea/3.x.bolen-ubuntu/build/Lib/test/test_code.py", line 218, in <module>
    import ctypes
  File "/srv/buildbot/buildarea/3.x.bolen-ubuntu/build/Lib/ctypes/__init__.py", line 7, in <module>
    from _ctypes import Union, Structure, Array
ModuleNotFoundError: No module named '_ctypes'

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resolution: fixed -> 
status: closed -> open

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Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue30604>
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