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  1. Qt
  2. QTBUG-77348

Crash (SIGSEGV) in QPlatformWindow::window() when pressed on Qt::ToolTip window border

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    Details

    • Platform/s:
      macOS
    • Commits:
      fc049052812bfa0b63af1f3c5fcadf1eb582e775 (qt/qtbase/5.12)

      Description

      I have a Qt::ToolTip window which should show in a specific place, similar to Qt Creator's LocatorPopup. ( when you pressed cmd + k).

      But the app receives SIGSEGV while trying to access QPlatformWindow::window() in qnsview_mouse.mm:

      QRegion mask = m_platformWindow->window()->mask(); 
      

      To reproduce this (in my case), a user should press on a specific place on the border of windows near Qt::ToolTip window border. See videos.

      The issue not happened if I changed Qt::ToolTip to Qt::Popup. But this is not an option for me. 

      Attached example and videos. (with Qt Creator steps and crash report)

        Attachments

        1. qtbug-crash-on-popup.zip
          7 kB
          Pavlo Shyba
        2. qtbug-crash-release.mov
          3.77 MB
          Pavlo Shyba
        3. qt-bug-debug-session.mov
          3.72 MB
          Pavlo Shyba
        4. Qt Creator_2019-08-07-120540_MacBook-Pro.crash
          82 kB
          Pavlo Shyba
        5. qt-creator-crash.mov
          1.51 MB
          Pavlo Shyba
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            People

            Assignee:
            tpochep Timur Pocheptsov
            Reporter:
            pavloshyba Pavlo Shyba
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              Dates

              Created:
              Updated:
              Resolved:

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