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  1. Qt
  2. QTBUG-42059

Crash in [QNsWindow sendEvent] after setParent()

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Details

    • macOS
    • aeb169a48869f4f50237e384e57ccb406228f620

    Description

      When calling setParent on a widget i sometimes gets this crash. Using the minimal example below i can reproduce the issue usually after having double clicked about 3-4 times - sometimes it crashed on 1st snap in, sometimes after tenth attempt.

      This is most likely to be a dangling pointer problem.

      Applying the patch of QTBUG-39628 did not help to solve the problem.

      Calling toggleParent() by event loop using QMetaObject::invokeMethod() does not solve the problem but makes it more difficult to reproduce.

      Attachments

        1. crash.png
          crash.png
          355 kB
        2. main.cpp
          1.0 kB
        3. vars.txt
          5 kB
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            tpochep Timur Pocheptsov
            hrabowski-old Maximilian Hrabowski (Inactive)
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            Dates

              Created:
              Updated:
              Resolved: