[New-bugs-announce] [issue36894] test_multiprocessing_spawn regression on Windows

[Antoine Pitrou]

New submission from Antoine Pitrou <pitrou at free.fr>:

After bpo-36867, test_multiprocessing_spawn fails running any test on Windows (but it isn't noticed as a fail build).

https://ci.appveyor.com/project/python/cpython/builds/24485897#L1264

0:04:05 load avg: 5.39 [389/421] test_multiprocessing_spawn run no tests
ERROR
======================================================================
ERROR: setUpModule (test.test_multiprocessing_spawn)
----------------------------------------------------------------------
Traceback (most recent call last):
  File "C:\projects\cpython\lib\test\_test_multiprocessing.py", line 5498, in setUpModule
    multiprocessing.set_forkserver_preload(PRELOAD)
  File "C:\projects\cpython\lib\multiprocessing\context.py", line 183, in set_forkserver_preload
    from .forkserver import set_forkserver_preload
  File "C:\projects\cpython\lib\multiprocessing\forkserver.py", line 14, in <module>
    from . import resource_tracker
  File "C:\projects\cpython\lib\multiprocessing\resource_tracker.py", line 24, in <module>
    import _posixshmem
ModuleNotFoundError: No module named '_posixshmem'
----------------------------------------------------------------------
Ran 0 tests in 0.005s
FAILED (errors=1)

----------
components: Library (Lib), Tests
messages: 342262
nosy: pierreglaser, pitrou
priority: deferred blocker
severity: normal
stage: needs patch
status: open
title: test_multiprocessing_spawn regression on Windows
type: behavior
versions: Python 3.8

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Python tracker <report at bugs.python.org>
<https://bugs.python.org/issue36894>
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