Segmentation Fault - wait_signal.wait & _WaitWidgetContextManager.__exit__

Hi,

With python 3.8 I am getting a segmentation fault at some wait functions when using macOS and WIndows. I could not reproduce it with Linux. With Python 3.7 and 2.7 everything works fine for all OS flavors.

Versions:

OS: macOS 10.14.6 Qt: 5.12.5 (conda-forge) PyQt: 5.12.3 (conda-forge) pytest-qt: master pytest: 5.4.1 (conda-forge)

Stacktrace - wait_signal.wait

For this particular test I am using qtbot.waitSignal.

Fatal Python error: Segmentation fault

Current thread 0x00000001098155c0 (most recent call first):
  File "/Users/slepicka/mc/envs/py38/lib/python3.8/site-packages/pytestqt/wait_signal.py", line 51 in wait
  File "/Users/slepicka/sandbox/git-slaclab/pydm-git/pydm/tests/widgets/test_rules.py", line 97 in test_rules_full
  File "/Users/slepicka/mc/envs/py38/lib/python3.8/site-packages/_pytest/python.py", line 184 in pytest_pyfunc_call
  File "/Users/slepicka/mc/envs/py38/lib/python3.8/site-packages/pluggy/callers.py", line 187 in _multicall
  File "/Users/slepicka/mc/envs/py38/lib/python3.8/site-packages/pluggy/manager.py", line 84 in <lambda>
  File "/Users/slepicka/mc/envs/py38/lib/python3.8/site-packages/pluggy/manager.py", line 93 in _hookexec
  File "/Users/slepicka/mc/envs/py38/lib/python3.8/site-packages/pluggy/hooks.py", line 286 in __call__
  File "/Users/slepicka/mc/envs/py38/lib/python3.8/site-packages/_pytest/python.py", line 1479 in runtest
  File "/Users/slepicka/mc/envs/py38/lib/python3.8/site-packages/_pytest/runner.py", line 135 in pytest_runtest_call
  File "/Users/slepicka/mc/envs/py38/lib/python3.8/site-packages/pluggy/callers.py", line 187 in _multicall
  File "/Users/slepicka/mc/envs/py38/lib/python3.8/site-packages/pluggy/manager.py", line 84 in <lambda>
  File "/Users/slepicka/mc/envs/py38/lib/python3.8/site-packages/pluggy/manager.py", line 93 in _hookexec
  File "/Users/slepicka/mc/envs/py38/lib/python3.8/site-packages/pluggy/hooks.py", line 286 in __call__
  File "/Users/slepicka/mc/envs/py38/lib/python3.8/site-packages/_pytest/runner.py", line 217 in <lambda>
  File "/Users/slepicka/mc/envs/py38/lib/python3.8/site-packages/_pytest/runner.py", line 244 in from_call
  File "/Users/slepicka/mc/envs/py38/lib/python3.8/site-packages/_pytest/runner.py", line 216 in call_runtest_hook
  File "/Users/slepicka/mc/envs/py38/lib/python3.8/site-packages/_pytest/runner.py", line 186 in call_and_report
  File "/Users/slepicka/mc/envs/py38/lib/python3.8/site-packages/_pytest/runner.py", line 100 in runtestprotocol
  File "/Users/slepicka/mc/envs/py38/lib/python3.8/site-packages/_pytest/runner.py", line 85 in pytest_runtest_protocol
  File "/Users/slepicka/mc/envs/py38/lib/python3.8/site-packages/pluggy/callers.py", line 187 in _multicall
  File "/Users/slepicka/mc/envs/py38/lib/python3.8/site-packages/pluggy/manager.py", line 84 in <lambda>
  File "/Users/slepicka/mc/envs/py38/lib/python3.8/site-packages/pluggy/manager.py", line 93 in _hookexec
  File "/Users/slepicka/mc/envs/py38/lib/python3.8/site-packages/pluggy/hooks.py", line 286 in __call__
  File "/Users/slepicka/mc/envs/py38/lib/python3.8/site-packages/_pytest/main.py", line 272 in pytest_runtestloop
  File "/Users/slepicka/mc/envs/py38/lib/python3.8/site-packages/pluggy/callers.py", line 187 in _multicall
  File "/Users/slepicka/mc/envs/py38/lib/python3.8/site-packages/pluggy/manager.py", line 84 in <lambda>
  File "/Users/slepicka/mc/envs/py38/lib/python3.8/site-packages/pluggy/manager.py", line 93 in _hookexec
  File "/Users/slepicka/mc/envs/py38/lib/python3.8/site-packages/pluggy/hooks.py", line 286 in __call__
  File "/Users/slepicka/mc/envs/py38/lib/python3.8/site-packages/_pytest/main.py", line 247 in _main
  File "/Users/slepicka/mc/envs/py38/lib/python3.8/site-packages/_pytest/main.py", line 191 in wrap_session
  File "/Users/slepicka/mc/envs/py38/lib/python3.8/site-packages/_pytest/main.py", line 240 in pytest_cmdline_main
  File "/Users/slepicka/mc/envs/py38/lib/python3.8/site-packages/pluggy/callers.py", line 187 in _multicall
  File "/Users/slepicka/mc/envs/py38/lib/python3.8/site-packages/pluggy/manager.py", line 84 in <lambda>
  File "/Users/slepicka/mc/envs/py38/lib/python3.8/site-packages/pluggy/manager.py", line 93 in _hookexec
  File "/Users/slepicka/mc/envs/py38/lib/python3.8/site-packages/pluggy/hooks.py", line 286 in __call__
  File "/Users/slepicka/mc/envs/py38/lib/python3.8/site-packages/_pytest/config/__init__.py", line 124 in main
  File "run_tests.py", line 21 in <module>
Segmentation fault: 11

Stacktrace.- _WaitWidgetContextManager.exit

In this case my test was using qtbot.waitExposed.

Current thread 0x000000010f0e35c0 (most recent call first):
  File "/usr/local/miniconda/envs/test-environment-3.8/lib/python3.8/site-packages/pytestqt/qtbot.py", line 723 in __exit__
  File "/Users/runner/runners/2.165.2/work/1/s/pydm/tests/widgets/test_drawing.py", line 508 in test_pydmdrawingline_draw_item
  File "/usr/local/miniconda/envs/test-environment-3.8/lib/python3.8/site-packages/_pytest/python.py", line 184 in pytest_pyfunc_call
  File "/usr/local/miniconda/envs/test-environment-3.8/lib/python3.8/site-packages/pluggy/callers.py", line 187 in _multicall
  File "/usr/local/miniconda/envs/test-environment-3.8/lib/python3.8/site-packages/pluggy/manager.py", line 84 in <lambda>
  File "/usr/local/miniconda/envs/test-environment-3.8/lib/python3.8/site-packages/pluggy/manager.py", line 93 in _hookexec
  File "/usr/local/miniconda/envs/test-environment-3.8/lib/python3.8/site-packages/pluggy/hooks.py", line 286 in __call__
  File "/usr/local/miniconda/envs/test-environment-3.8/lib/python3.8/site-packages/_pytest/python.py", line 1479 in runtest
  File "/usr/local/miniconda/envs/test-environment-3.8/lib/python3.8/site-packages/_pytest/runner.py", line 135 in pytest_runtest_call
  File "/usr/local/miniconda/envs/test-environment-3.8/lib/python3.8/site-packages/pluggy/callers.py", line 187 in _multicall
  File "/usr/local/miniconda/envs/test-environment-3.8/lib/python3.8/site-packages/pluggy/manager.py", line 84 in <lambda>
  File "/usr/local/miniconda/envs/test-environment-3.8/lib/python3.8/site-packages/pluggy/manager.py", line 93 in _hookexec
  File "/usr/local/miniconda/envs/test-environment-3.8/lib/python3.8/site-packages/pluggy/hooks.py", line 286 in __call__
  File "/usr/local/miniconda/envs/test-environment-3.8/lib/python3.8/site-packages/_pytest/runner.py", line 217 in <lambda>
  File "/usr/local/miniconda/envs/test-environment-3.8/lib/python3.8/site-packages/_pytest/runner.py", line 244 in from_call
  File "/usr/local/miniconda/envs/test-environment-3.8/lib/python3.8/site-packages/_pytest/runner.py", line 216 in call_runtest_hook
  File "/usr/local/miniconda/envs/test-environment-3.8/lib/python3.8/site-packages/_pytest/runner.py", line 186 in call_and_report
  File "/usr/local/miniconda/envs/test-environment-3.8/lib/python3.8/site-packages/_pytest/runner.py", line 100 in runtestprotocol
  File "/usr/local/miniconda/envs/test-environment-3.8/lib/python3.8/site-packages/_pytest/runner.py", line 85 in pytest_runtest_protocol
  File "/usr/local/miniconda/envs/test-environment-3.8/lib/python3.8/site-packages/pluggy/callers.py", line 187 in _multicall
  File "/usr/local/miniconda/envs/test-environment-3.8/lib/python3.8/site-packages/pluggy/manager.py", line 84 in <lambda>
  File "/usr/local/miniconda/envs/test-environment-3.8/lib/python3.8/site-packages/pluggy/manager.py", line 93 in _hookexec
  File "/usr/local/miniconda/envs/test-environment-3.8/lib/python3.8/site-packages/pluggy/hooks.py", line 286 in __call__
  File "/usr/local/miniconda/envs/test-environment-3.8/lib/python3.8/site-packages/_pytest/main.py", line 272 in pytest_runtestloop
  File "/usr/local/miniconda/envs/test-environment-3.8/lib/python3.8/site-packages/pluggy/callers.py", line 187 in _multicall
  File "/usr/local/miniconda/envs/test-environment-3.8/lib/python3.8/site-packages/pluggy/manager.py", line 84 in <lambda>
  File "/usr/local/miniconda/envs/test-environment-3.8/lib/python3.8/site-packages/pluggy/manager.py", line 93 in _hookexec
  File "/usr/local/miniconda/envs/test-environment-3.8/lib/python3.8/site-packages/pluggy/hooks.py", line 286 in __call__
  File "/usr/local/miniconda/envs/test-environment-3.8/lib/python3.8/site-packages/_pytest/main.py", line 247 in _main
  File "/usr/local/miniconda/envs/test-environment-3.8/lib/python3.8/site-packages/_pytest/main.py", line 191 in wrap_session
  File "/usr/local/miniconda/envs/test-environment-3.8/lib/python3.8/site-packages/_pytest/main.py", line 240 in pytest_cmdline_main
  File "/usr/local/miniconda/envs/test-environment-3.8/lib/python3.8/site-packages/pluggy/callers.py", line 187 in _multicall
  File "/usr/local/miniconda/envs/test-environment-3.8/lib/python3.8/site-packages/pluggy/manager.py", line 84 in <lambda>
  File "/usr/local/miniconda/envs/test-environment-3.8/lib/python3.8/site-packages/pluggy/manager.py", line 93 in _hookexec
  File "/usr/local/miniconda/envs/test-environment-3.8/lib/python3.8/site-packages/pluggy/hooks.py", line 286 in __call__
  File "/usr/local/miniconda/envs/test-environment-3.8/lib/python3.8/site-packages/_pytest/config/__init__.py", line 124 in main
  File "run_tests.py", line 21 in <module>
/Users/runner/runners/2.165.2/work/_temp/7e5f89e4-e30b-455e-83d2-e2695b1f105e.sh: line 2:   955 Segmentation fault: 11 

[hhslepicka]

@The-Compiler I will try to set up a minimal working example that breaks and try to track it down.

[hhslepicka]

@The-Compiler I had no time to look into this Python 3.8 issue yet. I will close the issue and get back to it in case I can reduce it to a minimal working example. Thank you for your time.