segfault using PyQt6 version 6.10.1

Federico Bruni fede at inventati.org
Sun Dec 21 20:55:49 GMT 2025


Hello

Frescobaldi, an application using PyQt6, has recently hit a serious bug
(causing a crash) which can be easily reproduced with PyQt 6.10.1,
while version 6.10.0 works fine. In this link you can find some stack
traces:
https://github.com/frescobaldi/frescobaldi/issues/2126

I noticed - unless I've done something wrong - that PyQt6 6.10.1 is
using Qt 6.10.0 while PyQt6 6.10.0 is using Qt 6.10.1. Perhaps the bug
we've found has been fixed already in Qt 6.10.1, but PyQt 6.10.1 is not
using the last Qt6 version for some reasons.

Best regards
Federico


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