Bug 266821

Application: kmplot (1.2.1)
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:
- What I was doing when the application crashed:
I was calculating the area of a function. It worked great but after I closed the window the whole program crashed.

-- Backtrace:
Application: KmPlot (kmplot), signal: Segmentation fault
[Current thread is 1 (Thread 0xb78df710 (LWP 1966))]

Thread 2 (Thread 0xb764cb70 (LWP 1967)):
#0  0x0076a416 in __kernel_vsyscall ()
#1  0x0525adf6 in poll () from /lib/libc.so.6
#2  0x04772a1b in g_poll () from /lib/libglib-2.0.so.0
#3  0x0476543c in ?? () from /lib/libglib-2.0.so.0
#4  0x04765ba7 in g_main_loop_run () from /lib/libglib-2.0.so.0
#5  0x01b2a6b4 in ?? () from /usr/lib/libgio-2.0.so.0
#6  0x0478c48f in ?? () from /lib/libglib-2.0.so.0
#7  0x00404cc9 in start_thread () from /lib/libpthread.so.0
#8  0x0526969e in clone () from /lib/libc.so.6

Thread 1 (Thread 0xb78df710 (LWP 1966)):
[KCrash Handler]
#7  operator!= (this=0x8d713f4) at /usr/include/qt4/QtCore/qbasicatomic.h:75
#8  detach (this=0x8d713f4) at /usr/include/qt4/QtCore/qvector.h:134
#9  data (this=0x8d713f4) at /usr/include/qt4/QtCore/qvector.h:139
#10 operator[] (this=0x8d713f4) at /usr/include/qt4/QtCore/qvector.h:348
#11 Plot::updateFunction (this=0x8d713f4) at ../../../kmplot/kmplot/function.cpp:1034
#12 0x0873efdc in View::updateCrosshairPosition (this=0x8d713b8) at ../../../kmplot/kmplot/view.cpp:3440
#13 0x0873fb35 in View::paintEvent (this=0x8d713b8) at ../../../kmplot/kmplot/view.cpp:2646
#14 0x00e40cc6 in QWidget::event (this=0x8d713b8, event=0xbf86f014) at kernel/qwidget.cpp:8333
#15 0x087301eb in View::event (this=0x8d713f4, e=0x10000) at ../../../kmplot/kmplot/view.cpp:4204
#16 0x00de2fdc in QApplicationPrivate::notify_helper (this=0x8ba08a0, receiver=0x8d713b8, e=0xbf86f014) at kernel/qapplication.cpp:4396
#17 0x00de90e9 in QApplication::notify (this=0xbf870080, receiver=0x8d713b8, e=0xbf86f014) at kernel/qapplication.cpp:4361
#18 0x0094368a in KApplication::notify (this=0xbf870080, receiver=0x8d713b8, event=0xbf86f014) at ../../kdeui/kernel/kapplication.cpp:310
#19 0x054c6b3b in QCoreApplication::notifyInternal (this=0xbf870080, receiver=0x8d713b8, event=0xbf86f014) at kernel/qcoreapplication.cpp:732
#20 0x00e47ee6 in sendSpontaneousEvent (this=0x8d71f88, pdev=0x8d455c4, rgn=..., offset=..., flags=<value optimized out>, sharedPainter=0x0, backingStore=0x8e73de8) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:218
#21 QWidgetPrivate::drawWidget (this=0x8d71f88, pdev=0x8d455c4, rgn=..., offset=..., flags=<value optimized out>, sharedPainter=0x0, backingStore=0x8e73de8) at kernel/qwidget.cpp:5420
#22 0x00e48cff in QWidgetPrivate::paintSiblingsRecursive (this=0x8d26278, pdev=0x8d455c4, siblings=..., index=28, rgn=..., offset=..., flags=4, sharedPainter=0x0, backingStore=0x8e73de8) at kernel/qwidget.cpp:5627
#23 0x00e47c35 in QWidgetPrivate::drawWidget (this=0x8d26278, pdev=0x8d455c4, rgn=..., offset=..., flags=<value optimized out>, sharedPainter=0x0, backingStore=0x8e73de8) at kernel/qwidget.cpp:5473
#24 0x01038c74 in QWidgetBackingStore::sync (this=0x8e73de8) at painting/qbackingstore.cpp:1328
#25 0x00e3a2b3 in QWidgetPrivate::syncBackingStore (this=0x8d26278) at kernel/qwidget.cpp:1805
#26 0x00e41466 in QWidget::event (this=0x8d23360, event=0x905bf88) at kernel/qwidget.cpp:8480
#27 0x01281917 in QMainWindow::event (this=0x8d23360, event=0x905bf88) at widgets/qmainwindow.cpp:1417
#28 0x00a398a4 in KMainWindow::event (this=0x8d23360, ev=0x905bf88) at ../../kdeui/widgets/kmainwindow.cpp:1100
#29 0x00a8214f in KXmlGuiWindow::event (this=0x8d23360, ev=0x905bf88) at ../../kdeui/xmlgui/kxmlguiwindow.cpp:130
#30 0x00de2fdc in QApplicationPrivate::notify_helper (this=0x8ba08a0, receiver=0x8d23360, e=0x905bf88) at kernel/qapplication.cpp:4396
#31 0x00de90e9 in QApplication::notify (this=0xbf870080, receiver=0x8d23360, e=0x905bf88) at kernel/qapplication.cpp:4361
#32 0x0094368a in KApplication::notify (this=0xbf870080, receiver=0x8d23360, event=0x905bf88) at ../../kdeui/kernel/kapplication.cpp:310
#33 0x054c6b3b in QCoreApplication::notifyInternal (this=0xbf870080, receiver=0x8d23360, event=0x905bf88) at kernel/qcoreapplication.cpp:732
#34 0x054c9d8b in sendEvent (receiver=0x0, event_type=0, data=0x8b8be98) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:215
#35 QCoreApplicationPrivate::sendPostedEvents (receiver=0x0, event_type=0, data=0x8b8be98) at kernel/qcoreapplication.cpp:1373
#36 0x054c9f4d in QCoreApplication::sendPostedEvents (receiver=0x0, event_type=0) at kernel/qcoreapplication.cpp:1266
#37 0x054f5a74 in sendPostedEvents (s=0x8ba2d10) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:220
#38 postEventSourceDispatch (s=0x8ba2d10) at kernel/qeventdispatcher_glib.cpp:277
#39 0x04761855 in g_main_context_dispatch () from /lib/libglib-2.0.so.0
#40 0x04765668 in ?? () from /lib/libglib-2.0.so.0
#41 0x04765848 in g_main_context_iteration () from /lib/libglib-2.0.so.0
#42 0x054f5565 in QEventDispatcherGlib::processEvents (this=0x8b8bb58, flags=...) at kernel/qeventdispatcher_glib.cpp:415
#43 0x00ea4be5 in QGuiEventDispatcherGlib::processEvents (this=0x8b8bb58, flags=...) at kernel/qguieventdispatcher_glib.cpp:204
#44 0x054c5609 in QEventLoop::processEvents (this=0xbf86ffe4, flags=) at kernel/qeventloop.cpp:149
#45 0x054c5a8a in QEventLoop::exec (this=0xbf86ffe4, flags=...) at kernel/qeventloop.cpp:201
#46 0x054ca00f in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1009
#47 0x00de1e07 in QApplication::exec () at kernel/qapplication.cpp:3672
#48 0x0804f3a8 in main (argc=1, argv=0xbf870224) at ../../../kmplot/kmplot/main.cpp:79

Possible duplicates by query: bug 262340, bug 257926, bug 236910, bug 236183.

Reported using DrKonqi