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  1. Qt
  2. QTBUG-132695

Crash in QGuiApplication::applicationStateChanged() when quitting app

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    • Android
    • 81ffb8c32 (dev), cb972cd5f (dev), 23c490f92 (6.10), adb9455c0 (6.10), dcc4736d5 (6.9), 7bb195a3b (6.9), d14231b25 (tqtc/lts-6.5), 2f391c66e (tqtc/lts-6.8), 57bf784d2 (tqtc/lts-6.8), 68172fa5a (tqtc/lts-6.5), c73d47b0c (tqtc/lts-6.5)
    • 2025wk34s2QtforAndroid

      Since updating to Qt 6.8.1 we’re seeing crashes triggered by QGuiApplication::applicationStateChanged() when quitting the app (e.g. by swiping up in the Android app switcher). We can reproduce this about 10% of tries on various Android devices and OS versions simply by launching and then quitting the app.

      The full stack trace is attached and also available here with relative offsets (select "Full Stack Trace").

        1. crash.log
          5 kB
        2. Qt-6.9.0-applicationStateChanged-crash-1.txt
          3 kB
        3. Qt-6.9.0-applicationStateChanged-crash-2.txt
          5 kB
        4. image-2025-05-30-12-28-39-888.png
          image-2025-05-30-12-28-39-888.png
          43 kB
        5. image-2025-07-02-15-34-50-142.png
          image-2025-07-02-15-34-50-142.png
          105 kB
        For Gerrit Dashboard: QTBUG-132695
        # Subject Branch Project Status CR V
        670302,3 Android: ensure valid focus object before native input context actions dev qt/qtbase Status: MERGED +2 0
        670303,10 Android: fix deadlock protector locking in QAndroidEventDispatcher dev qt/qtbase Status: MERGED +2 0
        670406,2 Android: ensure valid focus object before native input context actions 6.10 qt/qtbase Status: MERGED +2 0
        670456,2 Android: ensure valid focus object before native input context actions 6.9 qt/qtbase Status: MERGED +2 0
        670470,2 Android: ensure valid focus object before native input context actions tqtc/lts-6.8 qt/tqtc-qtbase Status: MERGED +2 0
        670478,3 Android: ensure valid focus object before native input context actions tqtc/lts-6.5 qt/tqtc-qtbase Status: MERGED +2 0
        670700,6 Android: check if focus object has input method hints dev qt/qtbase Status: MERGED +2 0
        671083,2 Android: check if focus object has input method hints 6.10 qt/qtbase Status: MERGED +2 0
        671108,2 Android: fix deadlock protector locking in QAndroidEventDispatcher 6.10 qt/qtbase Status: MERGED +2 0
        671130,2 Android: fix deadlock protector locking in QAndroidEventDispatcher 6.9 qt/qtbase Status: MERGED +2 0
        671132,2 Android: check if focus object has input method hints 6.9 qt/qtbase Status: MERGED +2 0
        671270,2 Android: fix deadlock protector locking in QAndroidEventDispatcher tqtc/lts-6.8 qt/tqtc-qtbase Status: MERGED +2 0
        671271,2 Android: check if focus object has input method hints tqtc/lts-6.8 qt/tqtc-qtbase Status: MERGED +2 0
        671433,2 Android: check if focus object has input method hints tqtc/lts-6.5 qt/tqtc-qtbase Status: MERGED +2 0
        671434,2 Android: fix deadlock protector locking in QAndroidEventDispatcher tqtc/lts-6.5 qt/tqtc-qtbase Status: MERGED +2 0

            assam Assam Boudjelthia
            fseiffert Frederik Seiffert
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              Created:
              Updated:
              Resolved: