Python interpreter crash executing pyQgis through debugger

[cbdj]

What is the bug or the crash?

Assuming environment variables are correctly set, this code:

import qgis
qgs=qgis.core.QgsApplication([], False)
qgs.initQgis()
print('OK !')
qgs.exit()

runs fine when run through commandline or PyCharm/VScode in non debug mode.

Result:

"C:\Program Files\QGIS 3.42.2\apps\Python312\python3.exe" "E:\WORKSPACE\test.py" 
OK !

Process finished with exit code 0

When executed through a python debugger, it crashes during qgs.initQgis() if QGIS version > 3.38:

"C:\Program Files\QGIS 3.42.2\apps\Python312\python3.exe" -X pycache_prefix=C:\Users\<username>\AppData\Local\JetBrains\PyCharm2025.1\cpython-cache "C:/Program Files/JetBrains/PyCharm 2025.1/plugins/python-ce/helpers/pydev/pydevd.py" --multiprocess --qt-support=auto --client 127.0.0.1 --port 3656 --file "E:\WORKSPACE\test.py" 
Connected to pydev debugger (build 251.23774.444)

Process finished with exit code -1073741819 (0xC0000005)

Steps to reproduce the issue

1. Install QGIS 3.40 or superior

2. Install PyCharm or VSCODE

3. Configure PyCharm to use QGIS' python interpreter:
   

4. Create a .env file in your workspace with following content:

PATH=C:\Program Files\QGIS 3.42.2\apps\qgis\bin;C:\Program Files\QGIS 3.42.2\apps\qt5\bin;C:\Program Files\QGIS 3.42.2\apps\Python312\Scripts;C:\Program Files\QGIS 3.42.2\bin;C:\WINDOWS\system32;C:\WINDOWS;C:\WINDOWS\system32\WBem;C:/Program Files/QGIS 3.42.2/apps/qgis/python;C:/Users/<username>/AppData/Roaming/QGIS/QGIS3\profiles\default\python;C:/Users/<username>/AppData/Roaming/QGIS/QGIS3\profiles\default\python\plugins;C:/Program Files/QGIS 3.42.2/apps/qgis/python/plugins;C:\Program Files\QGIS 3.42.2\apps\grass\grass83\etc\python;C:\Program Files\QGIS 3.42.2\bin\python312.zip;C:\Program Files\QGIS 3.42.2\apps\Python312\DLLs;C:\Program Files\QGIS 3.42.2\apps\Python312\Lib;C:\Program Files\QGIS 3.42.2\bin;C:\Users\<username>\AppData\Roaming\Python\Python312\site-packages;C:\Program Files\QGIS 3.42.2\apps\Python312;C:\Program Files\QGIS 3.42.2\apps\Python312\Lib\site-packages;C:\Program Files\QGIS 3.42.2\apps\Python312\Lib\site-packages\win32;C:\Program Files\QGIS 3.42.2\apps\Python312\Lib\site-packages\win32\lib;C:\Program Files\QGIS 3.42.2\apps\Python312\Lib\site-packages\Pythonwin;C:\Program Files\QGIS 3.42.2\apps\Python312\Lib\site-packages;C:/Users/<username>/AppData/Roaming/QGIS/QGIS3\profiles\default\python
GDAL_DATA=C:\Program Files\QGIS 3.42.2\apps\gdal\share\gdal
GDAL_DRIVER_PATH=C:\Program Files\QGIS 3.42.2\apps\gdal\lib\gdalplugins
GDAL_FILENAME_IS_UTF8=YES
PROJ_DATA=C:\Program Files\QGIS 3.42.2\share\proj
GS_LIB=C:\Program Files\QGIS 3.42.2\apps\gs\lib
PYTHONHOME=C:\Program Files\QGIS 3.42.2\apps\Python312
PYTHONUTF8=1
PYTHONPATH=.;C:/Program Files/QGIS 3.42.2/apps/qgis/python;C:/Users/<username>/AppData/Roaming/QGIS/QGIS3\profiles\default\python\plugins;C:/Program Files/QGIS 3.42.2/apps/qgis/python/plugins;C:\Program Files\QGIS 3.42.2\apps\grass\grass83\etc\python;C:\Program Files\QGIS 3.42.2\bin\python312.zip;C:\Program Files\QGIS 3.42.2\apps\Python312\DLLs;C:\Program Files\QGIS 3.42.2\apps\Python312\Lib;C:\Program Files\QGIS 3.42.2\bin;C:\Users\<username>\AppData\Roaming\Python\Python312\site-packages;C:\Program Files\QGIS 3.42.2\apps\Python312;C:\Program Files\QGIS 3.42.2\apps\Python312\Lib\site-packages;C:\Program Files\QGIS 3.42.2\apps\Python312\Lib\site-packages\win32;C:\Program Files\QGIS 3.42.2\apps\Python312\Lib\site-packages\win32\lib;C:\Program Files\QGIS 3.42.2\apps\Python312\Lib\site-packages\Pythonwin;C:\Program Files\QGIS 3.42.2\apps\Python312\Lib\site-packages;C:/Users/<username>/AppData/Roaming/QGIS/QGIS3\profiles\default\python
OPENSSL_ENGINES=C:\Program Files\QGIS 3.42.2\lib\engines-3
SSL_CERT_FILE=C:\Program Files\QGIS 3.42.2\bin\curl-ca-bundle.crt
SSL_CERT_DIR=C:\Program Files\QGIS 3.42.2\apps\openssl\certs
PDAL_DRIVER_PATH=C:\Program Files\QGIS 3.42.2\apps\pdal\plugins
QGIS_PREFIX_PATH=C:\Program Files\QGIS 3.42.2\apps\qgis
QT_PLUGIN_PATH=C:\Program Files\QGIS 3.42.2\apps\qgis\qtplugins;C:\Program Files\QGIS 3.42.2\apps\qt5\plugins
O4W_QT_PREFIX=C:/Program Files/QGIS 3.42.2/apps/Qt5
O4W_QT_BINARIES=C:/Program Files/QGIS 3.42.2/apps/Qt5/bin
O4W_QT_PLUGINS=C:/Program Files/QGIS 3.42.2/apps/Qt5/plugins
O4W_QT_LIBRARIES=C:/Program Files/QGIS 3.42.2/apps/Qt5/lib
O4W_QT_TRANSLATIONS=C:/Program Files/QGIS 3.42.2/apps/Qt5/translations
O4W_QT_HEADERS=C:/Program Files/QGIS 3.42.2/apps/Qt5/include
O4W_QT_DOC=C:/Program Files/QGIS 3.42.2/apps/Qt5/doc
VSI_CACHE=TRUE
VSI_CACHE_SIZE=1000000

5. Create a Run/Debug config as such:

6. Click on "Run" or "Debug"

Versions

Version de QGIS	3.42.2-Münster
Révision du code	402273f8c2
Libraries
Version de Qt	5.15.13
Version de Python	3.12.10
GDAL version	3.10.3
Version de Proj	9.6.0
Version de la base de données du registre EPSG	v12.004 (2025-03-02)
Version de GEOS	3.13.1-CAPI-1.19.2
Version de SQLite	3.46.1
Version de PDAL	2.8.3
Version du client PostgreSQL	17.3
Version de SpatiaLite	5.1.0
Version de QWT	6.3.0
Version de QScintilla2	2.14.1
Version de l'OS	Windows 10 Version 2009
Extensions Python actives
db_manager	0.1.20
grassprovider	2.12.99
MetaSearch	0.3.6
processing	2.12.99

Supported QGIS version

• I'm running a supported QGIS version according to the roadmap.

New profile

• I tried with a new QGIS profile

Additional context

No response