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  1. Qt
  2. QTBUG-80562

QWaylandXdgSurfaceV6::setGrabPopup crashes if the popups parent is deleted

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    Details

    • Platform/s:
      Linux/Wayland
    • Commits:
      7c0833f4bc22d2d947c793f0711e3f1e1a09012c (qt/qtwayland/5.14) 1e1f692dbdb0b1b8a1bbed99b5ff550dc978cdcd (qt/qtwayland/5.12)

      Description

      // 1. create and show a QWaylandXdgSurfaceV6::Popup (e.g. QMenu),
      parented to parent.
      auto pMenu = new QMenu("test", parent);
      pMenu->show();
      
      // 2. close the parent.
      QTimer::singleShot(100, [parent]() {parent->close(); });
      
      // 3. Next time a popup is shown it will crash in
      QWaylandXdgSurfaceV6::setGrabPopup.
      

      It seems a popup has a m_parent pointer to it's parent surface. Assuming the popup is closed first - the code works.
      But if the parent surface is closed first - the surface does not seem to have any
      knowledge of it's child popup(s) - and does nothing to destroy them first.

      In previous QT versions and windowing systems could be expected that closing a parent window will automatically close any child windows (especially without crashing).

      It seems to happen also only when the window decorations are disabled.

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            • Assignee:
              johanhelsing Johan Helsing
              Reporter:
              karimpinter Karim Pinter
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              Dates

              • Created:
                Updated:
                Resolved:

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