Application: umbrello (2.5.1)
KDE Platform Version: 4.5.1 (KDE 4.5.1)
Qt Version: 4.7.0
Operating System: Linux 2.6.35-24-generic i686
Distribution: Ubuntu 10.10

-- Information about the crash:
After loading xmi file to program no errors appeared. However when I added/modified some parameters in operations of object's classes (between which a synchronous signal was set up)  and tried to click on lifeline - crash happened.

-- Backtrace:
Application: Umbrello UML Modeller (umbrello), signal: Segmentation fault
[Current thread is 1 (Thread 0xb776b930 (LWP 5585))]

Thread 2 (Thread 0xb751db70 (LWP 5586)):
#0  0x00a08416 in __kernel_vsyscall ()
#1  0x0254adf6 in __poll (fds=0x25e1ff4, nfds=1, timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:87
#2  0x078e3a1b in g_poll () from /lib/libglib-2.0.so.0
#3  0x078d643c in ?? () from /lib/libglib-2.0.so.0
#4  0x078d6ba7 in g_main_loop_run () from /lib/libglib-2.0.so.0
#5  0x012426b4 in ?? () from /usr/lib/libgio-2.0.so.0
#6  0x078fd48f in ?? () from /lib/libglib-2.0.so.0
#7  0x0099dcc9 in start_thread (arg=0xb751db70) at pthread_create.c:304
#8  0x0255969e in clone () at ../sysdeps/unix/sysv/linux/i386/clone.S:130

Thread 1 (Thread 0xb776b930 (LWP 5585)):
[KCrash Handler]
#7  0x00000000 in ?? ()
#8  0x085fd606 in UMLView::getWidgetAt (this=0x92b7b60, p=...) at ../../../umbrello/umbrello/umlview.cpp:742
#9  0x08539f49 in UMLWidget::setSelected (this=0x92ba8b0, _select=false) at ../../../umbrello/umbrello/widgets/umlwidget.cpp:765
#10 0x08537af9 in UMLWidget::slotClearAllSelected (this=0x92ba8b0) at ../../../umbrello/umbrello/widgets/umlwidget.cpp:782
#11 0x08537e40 in UMLWidget::qt_metacall (this=0x92ba8b0, _c=QMetaObject::InvokeMetaMethod, _id=153764880, _a=0xbfc3cc7c) at ./umlwidget.moc:97
#12 0x085297ff in ObjectWidget::qt_metacall (this=0x92ba8b0, _c=QMetaObject::InvokeMetaMethod, _id=11, _a=0xbfc3cc7c) at ./objectwidget.moc:71
#13 0x01d398ca in QMetaObject::metacall (object=0x92ba8b0, cl=533, idx=11, argv=0xbfc3cc7c) at kernel/qmetaobject.cpp:237
#14 0x01d4c6ad in QMetaObject::activate (sender=0x92b7b60, m=0x867945c, local_signal_index=3, argv=0x92a4410) at kernel/qobject.cpp:3280
#15 0x085fadc9 in UMLView::sigClearAllSelected (this=0x92b7b60) at ./umlview.moc:179
#16 0x0808f750 in UMLWidgetController::selectSingle (this=0x9291fa0, me=0x90889d0) at ../../../umbrello/umbrello/controller/umlwidgetcontroller.cpp:537
#17 0x08090b6a in UMLWidgetController::mousePressEvent (this=0x9291fa0, me=0x90889d0) at ../../../umbrello/umbrello/controller/umlwidgetcontroller.cpp:151
#18 0x085a77b7 in ToolBarStateArrow::mousePressWidget (this=0x92b85e0) at ../../../umbrello/umbrello/toolbarstatearrow.cpp:70
#19 0x085a70d3 in ToolBarState::mousePress (this=0x92b85e0, ome=0xbfc3cdc0) at ../../../umbrello/umbrello/toolbarstate.cpp:95
#20 0x085fb37f in UMLView::contentsMousePressEvent (this=0x92b7b60, ome=0xbfc3cdc0) at ../../../umbrello/umbrello/umlview.cpp:1233
#21 0x04f1d318 in Q3ScrollView::viewportMousePressEvent (this=0x92b7b60, e=0xbfc3d350) at widgets/q3scrollview.cpp:1746
#22 0x04f1f078 in Q3ScrollView::eventFilter (this=0x92b7b60, obj=0x92b8c40, e=0xbfc3d350) at widgets/q3scrollview.cpp:1474
#23 0x01d3329a in QCoreApplicationPrivate::sendThroughObjectEventFilters (this=0x8d80b98, receiver=0x92b8c40, event=0xbfc3d350) at kernel/qcoreapplication.cpp:847
#24 0x0601ffb9 in QApplicationPrivate::notify_helper (this=0x8d80b98, receiver=0x92b8c40, e=0xbfc3d350) at kernel/qapplication.cpp:4392
#25 0x06026c2e in QApplication::notify (this=0xbfc3dc00, receiver=0x92b8c40, e=0xbfc3d350) at kernel/qapplication.cpp:3959
#26 0x007b968a in KApplication::notify (this=0xbfc3dc00, receiver=0x92b8c40, event=0xbfc3d350) at ../../kdeui/kernel/kapplication.cpp:310
#27 0x01d33b3b in QCoreApplication::notifyInternal (this=0xbfc3dc00, receiver=0x92b8c40, event=0xbfc3d350) at kernel/qcoreapplication.cpp:732
#28 0x06025094 in sendEvent (receiver=0x92b8c40, event=0xbfc3d350, alienWidget=0x92b8c40, nativeWidget=0x902aad0, buttonDown=0x69ba3c0, lastMouseReceiver=..., spontaneous=true) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:215
#29 QApplicationPrivate::sendMouseEvent (receiver=0x92b8c40, event=0xbfc3d350, alienWidget=0x92b8c40, nativeWidget=0x902aad0, buttonDown=0x69ba3c0, lastMouseReceiver=..., spontaneous=true) at kernel/qapplication.cpp:3058
#30 0x060b3d10 in QETWidget::translateMouseEvent (this=0x902aad0, event=0xbfc3d86c) at kernel/qapplication_x11.cpp:4403
#31 0x060b3151 in QApplication::x11ProcessEvent (this=0xbfc3dc00, event=0xbfc3d86c) at kernel/qapplication_x11.cpp:3414
#32 0x060e236a in x11EventSourceDispatch (s=0x8d83da8, callback=0, user_data=0x0) at kernel/qguieventdispatcher_glib.cpp:146
#33 0x078d2855 in g_main_context_dispatch () from /lib/libglib-2.0.so.0
#34 0x078d6668 in ?? () from /lib/libglib-2.0.so.0
#35 0x078d6848 in g_main_context_iteration () from /lib/libglib-2.0.so.0
#36 0x01d62565 in QEventDispatcherGlib::processEvents (this=0x8d633c8, flags=...) at kernel/qeventdispatcher_glib.cpp:415
#37 0x060e1be5 in QGuiEventDispatcherGlib::processEvents (this=0x8d633c8, flags=...) at kernel/qguieventdispatcher_glib.cpp:204
#38 0x01d32609 in QEventLoop::processEvents (this=0xbfc3db64, flags=) at kernel/qeventloop.cpp:149
#39 0x01d32a8a in QEventLoop::exec (this=0xbfc3db64, flags=...) at kernel/qeventloop.cpp:201
#40 0x01d3700f in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1009
#41 0x0601ee07 in QApplication::exec () at kernel/qapplication.cpp:3672
#42 0x0858b785 in main (argc=3, argv=0xbfc3ddb4) at ../../../umbrello/umbrello/main.cpp:111

Possible duplicates by query: bug 188340.

Reported using DrKonqi