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Thread: I'm confused with this crash problem

  1. 20th July 2010, 16:13 #1
    kellen851105
    kellen851105 is offline Beginner
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    Default I'm confused with this crash problem

    In my application, I called a Google library 's login function, it's in anotherthread, and after I get the response of login, the application seems freeze. I use gdb to get the following stack info , some body please help me know what's the meaning of it, how does it happen
    Qt Code: 
    1. #0 0x414d34d4 in QMetaObject::cast(QObject*) const () 
    2. from /opt/Qt/lib/libQtCore.so.4 
    3. #1 0x40891298 in QWidgetPrivate::paintBackground(QPainter*, QRegion const&, int) const () from /opt/Qt/lib/libQtGui.so.4 
    4. #2 0x4089c4bc in QWidgetPrivate::drawWidget(QPaintDevice*, QRegion const&, QPoint const&, int, QPainter*, QWidgetBackingStore*) () 
    5. from /opt/Qt/lib/libQtGui.so.4 
    6. #3 0x4089cd40 in QWidgetPrivate::paintSiblingsRecursive(QPaintDevice*, QList<QObject*> const&, int, QRegion const&, QPoint const&, int, QPainter*, QWidgetBackingStore*) () from /opt/Qt/lib/libQtGui.so.4 
    7. #4 0x4089cbe4 in QWidgetPrivate::paintSiblingsRecursive(QPaintDevice*, QList<QObject*> const&, int, QRegion const&, QPoint const&, int, QPainter*, QWidgetBackingStore*) () from /opt/Qt/lib/libQtGui.so.4 
    8. #5 0x4089cbe4 in QWidgetPrivate::paintSiblingsRecursive(QPaintDevice*, QList<QObject*> const&, int, QRegion const&, QPoint const&, int, QPainter*, QWidgetBackingStore*) () from /opt/Qt/lib/libQtGui.so.4 
    9. #6 0x4089cbe4 in QWidgetPrivate::paintSiblingsRecursive(QPaintDevice*, QList<QObject*> const&, int, QRegion const&, QPoint const&, int, QPainter*, QWidgetBackingStore*) () from /opt/Qt/lib/libQtGui.so.4 
    10. #7 0x4089cbe4 in QWidgetPrivate::paintSiblingsRecursive(QPaintDevice*, QList<QObject*> const&, int, QRegion const&, QPoint const&, int, QPainter*, QWidgetBackingStore*) () from /opt/Qt/lib/libQtGui.so.4 
    11. #8 0x4089cbe4 in QWidgetPrivate::paintSiblingsRecursive(QPaintDevice*, QList<QObject*> const&, int, QRegion const&, QPoint const&, int, QPainter*, QWidgetBackingStore*) () from /opt/Qt/lib/libQtGui.so.4 
    12. #9 0x4089cbe4 in QWidgetPrivate::paintSiblingsRecursive(QPaintDevice*, QList<QObject*> const&, int, QRegion const&, QPoint const&, int, QPainter*, QWidgetBackingStore*) () from /opt/Qt/lib/libQtGui.so.4 
    13. #10 0x4089cbe4 in QWidgetPrivate::paintSiblingsRecursive(QPaintDevice*, QList<QObject*> const&, int, QRegion const&, QPoint const&, int, QPainter*, QWidgetBackingStore*) () from /opt/Qt/lib/libQtGui.so.4 
    14. #11 0x4089cbe4 in QWidgetPrivate::paintSiblingsRecursive(QPaintDevice*, QList<QObject*> const&, int, QRegion const&, QPoint const&, int, QPainter*, QWidgetBackingStore*) () from /opt/Qt/lib/libQtGui.so.4 
    15. #12 0x4089cbe4 in QWidgetPrivate::paintSiblingsRecursive(QPaintDevice*, QList<QObject*> const&, int, QRegion const&, QPoint const&, int, QPainter*, QWidgetBackingStore*) () from /opt/Qt/lib/libQtGui.so.4 
    16. #13 0x4089cbe4 in QWidgetPrivate::paintSiblingsRecursive(QPaintDevice*, QList<QObject*> const&, int, QRegion const&, QPoint const&, int, QPainter*, QWidgetBackingStore*) () from /opt/Qt/lib/libQtGui.so.4 
    17. #14 0x4089c1f4 in QWidgetPrivate::drawWidget(QPaintDevice*, QRegion const&, QPoint const&, int, QPainter*, QWidgetBackingStore*) () 
    18. from /opt/Qt/lib/libQtGui.so.4 
    19. #15 0x40a9e040 in QWidgetBackingStore::sync() () 
    20. from /opt/Qt/lib/libQtGui.so.4 
    21. #16 0x4088ccd4 in QWidgetPrivate::syncBackingStore() () 
    22. from /opt/Qt/lib/libQtGui.so.4 
    23. #17 0x4089de10 in QWidget::event(QEvent*) () from /opt/Qt/lib/libQtGui.so.4 
    24. #18 0x40d0c270 in QFrame::event(QEvent*) () from /opt/Qt/lib/libQtGui.so.4 
    25. #19 0x40d7aa04 in QStackedWidget::event(QEvent*) () 
    26. from /opt/Qt/lib/libQtGui.so.4 
    27. #20 0x40839d70 in QApplicationPrivate::notify_helper(QObject*, QEvent*) () 
    28. from /opt/Qt/lib/libQtGui.so.4 
    29. #21 0x4083f438 in QApplication::notify(QObject*, QEvent*) () 
    30. from /opt/Qt/lib/libQtGui.so.4 
    31. #22 0x414cbd00 in QCoreApplication::notifyInternal(QObject*, QEvent*) () 
    32. from /opt/Qt/lib/libQtCore.so.4 
    33. #23 0x414cd070 in QCoreApplicationPrivate::sendPostedEvents(QObject*, int, QThreadData*) () from /opt/Qt/lib/libQtCore.so.4 
    34. #24 0x00000000 in ?? ()
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  2. 20th July 2010, 19:06 #2
    squidge
    squidge is offline Expert
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    Default Re: I'm confused with this crash problem

    You want us to solve your crashing problem with just a backtrace?

    We would have a better idea by reading your mind...
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