Crash report

When I runmy project with Python 3.12, sometimes on exit I get the error below.

Given the circumstances, it seems almost impossible to construct a minimal example with this. I'd appreciate more information on how to best track the source of this down... See comments below for a simpler reproducer.

If you want to try reproducing as is, getting a--with-pydebug Python 3.12.0b2 and then installingrequirements.txt andmisc/requirements/requirements-pyqt-6.txt followed by apython3 -m qutebrowser --temp-basedir --debug ":later 2000 quit" should do the trick.

Note that sometimes it segfaults on exit instead, which seems to be a different issue:https://www.riverbankcomputing.com/pipermail/pyqt/2023-June/045331.html

Error messages

./Include/internal/pycore_global_objects_fini_generated.h:15: _PyStaticObject_CheckRefcnt: Assertion failed: immortal object has less refcnt than expected _Py_IMMORTAL_REFCNTEnable tracemalloc to get the memory block allocation tracebackobject address  : 0x55e98b6cb508object refcount : 4294967294object type     : 0x55e98b5cb6c0object type name: bytesobject repr     : b'x'Fatal Python error: _PyObject_AssertFailed: _PyObject_AssertFailedPython runtime state: finalizing (tstate=0x000055e98b737490)Current thread 0x00007fca714f5740 (most recent call first):  <no Python frame>

This is already with-X tracemalloc, I also triedPYTHONTRACEMALLOC=25 instead. It seems I can't get more information about what's happening there. Happy to go dig into this more e.g. via gdb if someone can tell me what to look for.

Your environment

• CPython versions tested on: 3.12.0b2 with--with-pydebug
• Operating system and architecture: Archlinux, amd64

Linked PRs

• gh-105587: Remove assertion from_PyStaticObject_CheckRefcnt #105638
• [3.12] gh-105587: Remove assertion from_PyStaticObject_CheckRefcnt (GH-105638) #105769