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  1. Qt
  2. QTBUG-136485

QDockWidgets sends visibilityChanged on destruction

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    • 786959311 (dev), 31f1c78b0 (6.9.1), e30e358ce (6.9)

    Description

      Probably since https://codereview.qt-project.org/c/qt/qtbase/+/636265 by mmutz and richard QDockWidget sends visibilityChanged signal on destruction.

      This can lead to crashes in user code when a main widget is supposed to be reacting to changed visibility and e.g. hide/show/modify other data members of same widget.

      This is seen in Okular auto tests as part of the tests for Qt Next.

      There is also a quite small example in

      https://invent.kde.org/sune/windows-test-thingie/-/blob/34f78089876756d1fe662fd7e589da901ba3d6d8/main.cpp

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          Bug - A problem which impairs or prevents the functions of the product. QTCREATORBUG-32966 Segmentation fault when closing Creator

          • P1: Critical - Urgent and Important, will STOP the release if matched with set FixVersion field. This includes regressions from the last version that are not edge cases; Data loss; Build issues; Flaky tests; All but the most unlikely crashes/lockups/hanging; Serious usability issues and embarrassing bugs & Bugs critical to a deliverable. This is the highest possible priority for requirements.
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              vhilshei Volker Hilsheimer
              svuorela Sune Vuorela
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