Qt exec bug

[waiter]

#0 0x00007f9884cf09f4 in ?? () from /usr/lib64/libQtCore.so.4
#1 0x00007f9884cbe582 in QBasicTimer::stop() () from /usr/lib64/libQtCore.so.4
#2 0x00007f9884cbe5b1 in QBasicTimer::start(int, QObject*) () from /usr/lib64/libQtCore.so.4
#3 0x00007f98851fb904 in QApplication::notify(QObject*, QEvent*) () from /usr/lib64/libQtGui.so.4
#4 0x00007f9884cbf73e in QCoreApplication::notifyInternal(QObject*, QEvent*) () from /usr/lib64/libQtCore.so.4
#5 0x00007f98851f658b in QApplicationPrivate::sendMouseEvent(QWidget*, QMouseEvent*, QWidget*, QWidget*, QWidget**, QPointer<QWidget>&, bool) () from /usr/lib64/libQtGui.so.4
#6 0x00007f9885270bd4 in ?? () from /usr/lib64/libQtGui.so.4
#7 0x00007f988526f961 in QApplication::x11ProcessEvent(_XEvent*) () from /usr/lib64/libQtGui.so.4
#8 0x00007f9885295c32 in ?? () from /usr/lib64/libQtGui.so.4
#9 0x00007f9882c2f3b5 in g_main_context_dispatch () from /usr/lib64/libglib-2.0.so.0
#10 0x00007f9882c2f6e8 in ?? () from /usr/lib64/libglib-2.0.so.0
#11 0x00007f9882c2f7a4 in g_main_context_iteration () from /usr/lib64/libglib-2.0.so.0
#12 0x00007f9884ced936 in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) ()
from /usr/lib64/libQtCore.so.4
#13 0x00007f98852958ae in ?? () from /usr/lib64/libQtGui.so.4
#14 0x00007f9884cbe73f in QEventLoop::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) ()
from /usr/lib64/libQtCore.so.4
#15 0x00007f9884cbe9c8 in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) ()
from /usr/lib64/libQtCore.so.4
#16 0x00007f9884cc33a8 in QCoreApplication::exec() () from /usr/lib64/libQtCore.so.4
#17 0x000000000043514a in main (argc=6, argv=0x7fff11f9c878)


I don't know why?

[wysota]

Where do you see a bug here?