Crash in PyQt6 / pytest

[Philippe Fremy]

Hi,

I am getting a crash while running some tests with pytest and pyqt6. I 
have managed to isolate the problem into a single source file, but the 
crash only appears when launching with pytest. Attached is the source 
file. To reproduce, put the file into a directory and launch pytest.

The output looks like:

D:\work\example> pytest
================================================= test session starts 
=================================================
platform win32 -- Python 3.8.9, pytest-6.2.5, py-1.11.0, pluggy-1.0.0
rootdir: d:\work\example, configfile: tox.ini
collected 1 item

test_qobject.py Windows fatal exception: access violation

Current thread 0x00005548 (most recent call first):
   File "d:\work\example\env_pyqt6\lib\site-packages\_pytest\python.py", 
line 183 in pytest_pyfunc_call
   File 
"d:\work\example\env_pyqt6\lib\site-packages\pluggy\_callers.py", line 
39 in _multicall
   File 
"d:\work\example\env_pyqt6\lib\site-packages\pluggy\_manager.py", line 
80 in _hookexec
   File "d:\work\example\env_pyqt6\lib\site-packages\pluggy\_hooks.py", 
line 265 in __call__
   File "d:\work\example\env_pyqt6\lib\site-packages\_pytest\python.py", 
line 1641 in runtest
   File "d:\work\example\env_pyqt6\lib\site-packages\_pytest\runner.py", 
line 162 in pytest_runtest_call
   File 
"d:\work\example\env_pyqt6\lib\site-packages\pluggy\_callers.py", line 
39 in _multicall
   File 
"d:\work\example\env_pyqt6\lib\site-packages\pluggy\_manager.py", line 
80 in _hookexec
   File "d:\work\example\env_pyqt6\lib\site-packages\pluggy\_hooks.py", 
line 265 in __call__
   File "d:\work\example\env_pyqt6\lib\site-packages\_pytest\runner.py", 
line 255 in <lambda>
   File "d:\work\example\env_pyqt6\lib\site-packages\_pytest\runner.py", 
line 311 in from_call
   File "d:\work\example\env_pyqt6\lib\site-packages\_pytest\runner.py", 
line 254 in call_runtest_hook
   File "d:\work\example\env_pyqt6\lib\site-packages\_pytest\runner.py", 
line 215 in call_and_report
   File "d:\work\example\env_pyqt6\lib\site-packages\_pytest\runner.py", 
line 126 in runtestprotocol
   File "d:\work\example\env_pyqt6\lib\site-packages\_pytest\runner.py", 
line 109 in pytest_runtest_protocol
   File 
"d:\work\example\env_pyqt6\lib\site-packages\pluggy\_callers.py", line 
39 in _multicall
   File 
"d:\work\example\env_pyqt6\lib\site-packages\pluggy\_manager.py", line 
80 in _hookexec
   File "d:\work\example\env_pyqt6\lib\site-packages\pluggy\_hooks.py", 
line 265 in __call__
   File "d:\work\example\env_pyqt6\lib\site-packages\_pytest\main.py", 
line 348 in pytest_runtestloop
   File 
"d:\work\example\env_pyqt6\lib\site-packages\pluggy\_callers.py", line 
39 in _multicall
   File 
"d:\work\example\env_pyqt6\lib\site-packages\pluggy\_manager.py", line 
80 in _hookexec
   File "d:\work\example\env_pyqt6\lib\site-packages\pluggy\_hooks.py", 
line 265 in __call__
   File "d:\work\example\env_pyqt6\lib\site-packages\_pytest\main.py", 
line 323 in _main
   File "d:\work\example\env_pyqt6\lib\site-packages\_pytest\main.py", 
line 269 in wrap_session
   File "d:\work\example\env_pyqt6\lib\site-packages\_pytest\main.py", 
line 316 in pytest_cmdline_main
   File 
"d:\work\example\env_pyqt6\lib\site-packages\pluggy\_callers.py", line 
39 in _multicall
   File 
"d:\work\example\env_pyqt6\lib\site-packages\pluggy\_manager.py", line 
80 in _hookexec
   File "d:\work\example\env_pyqt6\lib\site-packages\pluggy\_hooks.py", 
line 265 in __call__
   File 
"d:\work\example\env_pyqt6\lib\site-packages\_pytest\config\__init__.py", 
line 162 in main
   File 
"d:\work\example\env_pyqt6\lib\site-packages\_pytest\config\__init__.py", 
line 185 in console_main
   File "d:\work\example\env_pyqt6\Scripts\pytest.exe\__main__.py", line 
7 in <module>
   File "D:\program\python38\lib\runpy.py", line 87 in _run_code
   File "D:\program\python38\lib\runpy.py", line 194 in _run_module_as_main

Cheers,

Philippe
-------------- next part --------------
from PyQt6.QtWidgets import QApplication

def test_me():
    app = QApplication([])

app = QApplication([])