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GeezerVison is showing github.com — gh-149879: Fix test_concurrent_futures on Cygwin by vstinner · Pull Request #150415 · python/cpython

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@vstinner

@vstinner vstinner commented May 25, 2026 •
edited by bedevere-app Bot
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On Cygwin, skip tests using "forkserver" start method.

  • Issue: Enhance Cygwin support #149879

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@vstinner
pythongh-149879: Fix test_concurrent_futures on Cygwin
192e1fd 
On Cygwin, skip tests using "forkserver" start method.
@vstinner vstinner added the skip news label May 25, 2026
@bedevere-app bedevere-app Bot mentioned this pull request May 25, 2026
Enhance Cygwin support #149879
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@bedevere-app bedevere-app Bot added the awaiting core review label May 25, 2026
@vstinner

vstinner commented May 25, 2026

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The CI is incomplete, 3 tests are still failing:

  • test_force_shutdown_workers_stops_pool() hangs
  • FAIL: test_traceback_when_child_process_terminates_abruptly (test.test_concurrent_futures.test_process_pool.ProcessPoolForkProcessPoolExecutorTest.test_traceback_when_child_process_terminates_abruptly)
  • FAIL: test_traceback_when_child_process_terminates_abruptly (test.test_concurrent_futures.test_process_pool.ProcessPoolSpawnProcessPoolExecutorTest.test_traceback_when_child_process_terminates_abruptly)
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@vstinner
Don't check BrokenProcessPool.__cause__
c0ea488 
On Cygwin, the cause is not set.
@vstinner

vstinner commented May 25, 2026

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test_traceback_when_child_process_terminates_abruptly

I modified the test to skip the check on Cygwin.
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@vstinner
vstinner merged commit 5cb54c9 into python:main May 25, 2026
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@vstinner
vstinner deleted the concurrent_futures branch May 25, 2026 21:04
@bedevere-app bedevere-app Bot removed the awaiting core review label May 25, 2026
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@vstinner
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