Bug 293149

Application: konsole (2.8)
KDE Platform Version: 4.8.00 (4.8.0
Qt Version: 4.7.4
Operating System: Linux 3.0.0-16-generic x86_64
Distribution: Ubuntu 11.10

-- Information about the crash:
- What I was doing when the application crashed:
I wrote a small C application that uses recursive calls and also outputs data, to the console, (stdout with printf)
when i scrolled up i noticed that the history was inconsistent (at a cetain point the screen
was just empty, like only the last 100 lines were saved) 

- Unusual behavior I noticed:
history inconsistent after just a few lines of scrolling up the history (previous output) was missing

The crash does not seem to be reproducible.

-- Backtrace:
Application: Konsole (konsole), signal: Segmentation fault
[KCrash Handler]
#6  0x00007f4e94e87f2f in Konsole::Screen::fillWithDefaultChar (dest=0xfffffffa2b09cef0, count=<optimized out>) at ../../src/Screen.cpp:1412
#7  0x00007f4e94e8a6e6 in Konsole::ScreenWindow::getImage (this=0x13b8ac0) at ../../src/ScreenWindow.cpp:79
#8  0x00007f4e94eb060c in Konsole::TerminalDisplay::updateImage (this=0x1373d40) at ../../src/TerminalDisplay.cpp:945
#9  0x00007f4e94eb126b in Konsole::TerminalDisplay::qt_metacall (this=0x1373d40, _c=QMetaObject::InvokeMetaMethod, _id=22, _a=0x7ffffed5dc40) at ./TerminalDisplay.moc:150
#10 0x00007f4e93da2eba in QMetaObject::activate (sender=0x136ed10, m=<optimized out>, local_signal_index=<optimized out>, argv=0x7ffffed5dc40) at kernel/qobject.cpp:3278
#11 0x00007f4e937b0b0e in QAbstractSlider::valueChanged (this=<optimized out>, _t1=75059825) at .moc/release-shared/moc_qabstractslider.cpp:182
#12 0x00007f4e93588dfb in QScrollBar::mouseMoveEvent (this=0x136ed10, e=0x7ffffed5e3f0) at widgets/qscrollbar.cpp:673
#13 0x00007f4e9318fd1e in QWidget::event (this=0x136ed10, event=0x7ffffed5e3f0) at kernel/qwidget.cpp:8280
#14 0x00007f4e935881da in QScrollBar::event (this=0x136ed10, event=0x7ffffed5e3f0) at widgets/qscrollbar.cpp:545
#15 0x00007f4e9313f474 in notify_helper (e=0x7ffffed5e3f0, receiver=0x136ed10, this=0xedd050) at kernel/qapplication.cpp:4486
#16 QApplicationPrivate::notify_helper (this=0xedd050, receiver=0x136ed10, e=0x7ffffed5e3f0) at kernel/qapplication.cpp:4458
#17 0x00007f4e93144cbb in QApplication::notify (this=<optimized out>, receiver=0x136ed10, e=0x7ffffed5e3f0) at kernel/qapplication.cpp:4047
#18 0x00007f4e947c6ae6 in KApplication::notify (this=0x7ffffed5f050, receiver=0x136ed10, event=0x7ffffed5e3f0) at ../../kdeui/kernel/kapplication.cpp:311
#19 0x00007f4e93d8fafc in QCoreApplication::notifyInternal (this=0x7ffffed5f050, receiver=0x136ed10, event=0x7ffffed5e3f0) at kernel/qcoreapplication.cpp:787
#20 0x00007f4e93140442 in sendEvent (event=<optimized out>, receiver=<optimized out>) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:215
#21 QApplicationPrivate::sendMouseEvent (receiver=0x136ed10, event=0x7ffffed5e3f0, alienWidget=0x136ed10, nativeWidget=0x109f630, buttonDown=0x136ed10, lastMouseReceiver=..., spontaneous=true) at kernel/qapplication.cpp:3146
#22 0x00007f4e931bf9d5 in QETWidget::translateMouseEvent (this=0x109f630, event=<optimized out>) at kernel/qapplication_x11.cpp:4571
#23 0x00007f4e931be94e in QApplication::x11ProcessEvent (this=0x7ffffed5f050, event=0x7ffffed5ec10) at kernel/qapplication_x11.cpp:3693
#24 0x00007f4e931e74a2 in x11EventSourceDispatch (s=0xeda610, callback=0, user_data=0x0) at kernel/qguieventdispatcher_glib.cpp:146
#25 0x00007f4e8f293a5d in g_main_context_dispatch () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#26 0x00007f4e8f294258 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#27 0x00007f4e8f294429 in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#28 0x00007f4e93dbaed6 in QEventDispatcherGlib::processEvents (this=0xea7f40, flags=<optimized out>) at kernel/qeventdispatcher_glib.cpp:422
#29 0x00007f4e931e710e in QGuiEventDispatcherGlib::processEvents (this=<optimized out>, flags=<optimized out>) at kernel/qguieventdispatcher_glib.cpp:204
#30 0x00007f4e93d8ecf2 in QEventLoop::processEvents (this=<optimized out>, flags=...) at kernel/qeventloop.cpp:149
#31 0x00007f4e93d8eef7 in QEventLoop::exec (this=0x7ffffed5efe0, flags=...) at kernel/qeventloop.cpp:201
#32 0x00007f4e93d93789 in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1064
#33 0x00007f4e954abd22 in kdemain (argc=3, argv=0x7ffffed5f2a8) at ../../src/main.cpp:89
#34 0x00007f4e9511a30d in __libc_start_main (main=0x400630 <main(int, char**)>, argc=3, ubp_av=0x7ffffed5f2a8, init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>, stack_end=0x7ffffed5f298) at libc-start.c:226
#35 0x0000000000400661 in _start ()

This bug may be a duplicate of or related to bug 246484.

Possible duplicates by query: bug 278903, bug 272878.

Reported using DrKonqi