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  1. Qt
  2. QTBUG-112759

Application crashes on QAbstractButton::setChecked if button destroyed in toggled signal

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    • Icon: Bug Bug
    • Resolution: Fixed
    • Icon: P1: Critical P1: Critical
    • 6.5.1, 6.6.0
    • 5.15, 6.5.0
    • Widgets: Widgets and Dialogs
    • None
    • Ubuntu 20.04, KDE, Qt 5.15
    • All
    • d953bc76b (dev), fbc3fd7d6 (6.5)

      https://github.com/qt/qtbase/blob/5.15/src/widgets/widgets/qabstractbutton.cpp : 689

      There is no check for quard before call to QAccessible::updateAccessibility(&event);

      If a button is destroyed in emitToggled() application craches in QAccessibleEvent::accessibleInterface(), because
      QAccessibleStateChangeEvent::m_object is invalid.

       

      In attached example application crashes in 4 seconds after button pressed

       

       

       

        1. main.cpp
          0.8 kB
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            axelspoerl Axel Spoerl
            seege Sergey Kudryashov
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              Created:
              Updated:
              Resolved:

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