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  1. Qt
  2. QTBUG-45760

Some Qt apps crashs if they are compiled with gcc5

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    • Icon: Bug Bug
    • Resolution: Duplicate
    • Icon: P1: Critical P1: Critical
    • None
    • 5.4.2
    • Core: Other
    • None
    • Debian SID + gcc 5 from eperimental

      I've tried a few examples and some of them are crashing (e.g. examples/widgets/mainwindows/application).

      From what I've seen it seems that (sometimes) gcc5 fails to static_cast QCoreAppication to QGuiApplication, qGuiApp macro (static_cast<QGuiApplication *>(QCoreApplication::instance())) is 0.

      I realy have no idea why somethimes qGuiApp works and sometime doesn't, and I have no idea if its gcc's fault or Qt's.

      I attached the full backtrace.

        1. gcc5_crash_qt5.4.txt
          12 kB
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            thiago Thiago Macieira
            taipan BogDan Vatra
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