[New-bugs-announce] [issue30169] test_multiprocessing_spawn crashed on AMD64 Windows8.1 Non-Debug 3.x buildbot

[STINNER Victor]

New submission from STINNER Victor:

http://buildbot.python.org/all/builders/AMD64%20Windows8.1%20Non-Debug%203.x/builds/670/steps/test/logs/stdio

0:05:37 [255/404/1] test_multiprocessing_spawn crashed (Exit code 3221225477)
Windows fatal exception: access violation

Current thread 0x00001644 (most recent call first):
  File "D:\buildarea\3.x.ware-win81-release\build\lib\test\_test_multiprocessing.py", line 3997 in ManagerMixin
  File "D:\buildarea\3.x.ware-win81-release\build\lib\test\_test_multiprocessing.py", line 3988 in <module>
  File "<frozen importlib._bootstrap>", line 205 in _call_with_frames_removed
  File "<frozen importlib._bootstrap_external>", line 679 in exec_module
  File "<frozen importlib._bootstrap>", line 655 in _load_unlocked
  File "<frozen importlib._bootstrap>", line 950 in _find_and_load_unlocked
  File "<frozen importlib._bootstrap>", line 961 in _find_and_load
  File "D:\buildarea\3.x.ware-win81-release\build\lib\test\test_multiprocessing_spawn.py", line 2 in <module>
  File "<frozen importlib._bootstrap>", line 205 in _call_with_frames_removed
  File "<frozen importlib._bootstrap_external>", line 679 in exec_module
  File "<frozen importlib._bootstrap>", line 655 in _load_unlocked
  File "<frozen importlib._bootstrap>", line 950 in _find_and_load_unlocked
  File "<frozen importlib._bootstrap>", line 961 in _find_and_load
  File "<frozen importlib._bootstrap>", line 978 in _gcd_import
  File "D:\buildarea\3.x.ware-win81-release\build\lib\importlib\__init__.py", line 127 in import_module
  File "D:\buildarea\3.x.ware-win81-release\build\lib\test\libregrtest\runtest.py", line 152 in runtest_inner
  File "D:\buildarea\3.x.ware-win81-release\build\lib\test\libregrtest\runtest.py", line 119 in runtest
  File "D:\buildarea\3.x.ware-win81-release\build\lib\test\libregrtest\runtest_mp.py", line 71 in run_tests_slave
  File "D:\buildarea\3.x.ware-win81-release\build\lib\test\libregrtest\main.py", line 470 in _main
  File "D:\buildarea\3.x.ware-win81-release\build\lib\test\libregrtest\main.py", line 463 in main
  File "D:\buildarea\3.x.ware-win81-release\build\lib\test\libregrtest\main.py", line 527 in main
  File "D:\buildarea\3.x.ware-win81-release\build\lib\test\regrtest.py", line 46 in _main
  File "D:\buildarea\3.x.ware-win81-release\build\lib\test\regrtest.py", line 50 in <module>
  File "D:\buildarea\3.x.ware-win81-release\build\lib\runpy.py", line 85 in _run_code
  File "D:\buildarea\3.x.ware-win81-release\build\lib\runpy.py", line 193 in _run_module_as_main

Note: same crash in test_multiprocessing_fork, even if Windows has no os.fork(): the crash occurs at lib\test\test_multiprocessing_fork.py:2 "import test._test_multiprocessing", before check if os.fork() exists.

----------
components: Library (Lib), Tests, Windows
messages: 292337
nosy: davin, haypo, paul.moore, steve.dower, tim.golden, zach.ware
priority: normal
severity: normal
status: open
title: test_multiprocessing_spawn crashed on AMD64 Windows8.1 Non-Debug 3.x buildbot
type: crash
versions: Python 3.7

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Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue30169>
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