Python 3.10
Qt 6.3.1 (x86_64-little_endian-lp64 shared (dynamic) debug build; by GCC 11.2.0)
metaObject() 0x55aa0b4b6820  C++ address....... PySide6.QtCore.QObject/0x55aa0b4b6820 
hasOwnership...... 1
containsCppWrapper 1
validCppObject.... 1
wasCreatedByPython 1

metaObject() 0x55aa0b4b7060  C++ address....... PySide6.QtCore.QObject/0x55aa0b4b7060 
hasOwnership...... 1
containsCppWrapper 1
validCppObject.... 1
wasCreatedByPython 1

metaObject() 0x55aa0b4b6820 child C++ address....... PySide6.QtCore.QObject/0x55aa0b4b6820 
hasOwnership...... 1
containsCppWrapper 1
validCppObject.... 1
wasCreatedByPython 1

metaObject() 0x55aa0b4b7060 parent C++ address....... PySide6.QtCore.QObject/0x55aa0b4b7060 
hasOwnership...... 1
containsCppWrapper 1
validCppObject.... 1
wasCreatedByPython 1

metaObject() 0x55aa0b4b7060 parent C++ address....... PySide6.QtCore.QObject/0x55aa0b4b7060 
hasOwnership...... 1
containsCppWrapper 1
validCppObject.... 1
wasCreatedByPython 1

metaObject() 0x55aa0b4b6820 child C++ address....... PySide6.QtCore.QObject/0x55aa0b4b6820 
hasOwnership...... 1
containsCppWrapper 1
validCppObject.... 1
wasCreatedByPython 1

metaObject() 0x55aa0b4b7060 parent C++ address....... PySide6.QtCore.QObject/0x55aa0b4b7060 
hasOwnership...... 1
containsCppWrapper 1
validCppObject.... 1
wasCreatedByPython 1

before gc del child
before gc del parent
before gc.collect()
~QObjectWrapper 0x55aa0b4b7060 parent
metaObject() 0x55aa0b4b6820 child C++ address....... PySide6.QtCore.QObject/0x55aa0b4b6820 
hasOwnership...... 1
containsCppWrapper 1
validCppObject.... 1
wasCreatedByPython 1

Fatal Python error: _PyInterpreterState_GET: the function must be called with the GIL held, but the GIL is released (the current Python thread state is NULL)
Python runtime state: initialized

Current thread 0x00007f226cefeb80 (most recent call first):
  Garbage-collecting
  File "/home/frkleint/samples/pyside1919.py", line 30 in <module>

Extension modules: shiboken6.Shiboken, PySide6.QtCore (total: 2)
Aborted (core dumped)