Bug 250335

Application: cantor (0.2)
KDE Platform Version: 4.5.1 (KDE 4.5.1)
Qt Version: 4.7.0
Operating System: Linux 2.6.32-25-generic i686
Distribution: Ubuntu 10.04.1 LTS

-- Information about the crash:
- What I was doing when the application crashed:
start cantor, open a large sage/cantor  document 
it will crash.

The crash can be reproduced every time.

-- Backtrace:
Application: Cantor (cantor), signal: Segmentation fault
[Current thread is 1 (Thread 0xb78a1930 (LWP 19733))]

Thread 2 (Thread 0xb447eb70 (LWP 19735)):
#0  0x00d02422 in __kernel_vsyscall ()
#1  0x01b39b86 in poll () from /lib/tls/i686/cmov/libc.so.6
#2  0x05f1d4eb in g_poll () from /lib/libglib-2.0.so.0
#3  0x05f100ac in ?? () from /lib/libglib-2.0.so.0
#4  0x05f104b8 in g_main_context_iteration () from /lib/libglib-2.0.so.0
#5  0x0575f82f in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr//lib/libQtCore.so.4
#6  0x0572fa99 in QEventLoop::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr//lib/libQtCore.so.4
#7  0x0572ff1a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr//lib/libQtCore.so.4
#8  0x0562cc5e in QThread::exec() () from /usr//lib/libQtCore.so.4
#9  0x0570e9ab in ?? () from /usr//lib/libQtCore.so.4
#10 0x0562ff39 in ?? () from /usr//lib/libQtCore.so.4
#11 0x004df96e in start_thread () from /lib/tls/i686/cmov/libpthread.so.0
#12 0x01b47a4e in clone () from /lib/tls/i686/cmov/libc.so.6

Thread 1 (Thread 0xb78a1930 (LWP 19733)):
[KCrash Handler]
#7  0x012a07f8 in QTextTable::cellAt(int, int) const () from /usr//lib/libQtGui.so.4
#8  0x05d6fd90 in CommandEntry::updatePrompt() () from /usr/lib/kde4/libcantorpart.so
#9  0x05d5edd3 in CommandEntry::qt_metacall(QMetaObject::Call, int, void**) () from /usr/lib/kde4/libcantorpart.so
#10 0x05736d4a in QMetaObject::metacall(QObject*, QMetaObject::Call, int, void**) () from /usr//lib/libQtCore.so.4
#11 0x05749ab5 in QMetaObject::activate(QObject*, QMetaObject const*, int, void**) () from /usr//lib/libQtCore.so.4
#12 0x05d68358 in Worksheet::updatePrompt() () from /usr/lib/kde4/libcantorpart.so
#13 0x05d685f3 in Worksheet::loginToSession() () from /usr/lib/kde4/libcantorpart.so
#14 0x05d6ceb3 in Worksheet::qt_metacall(QMetaObject::Call, int, void**) () from /usr/lib/kde4/libcantorpart.so
#15 0x05736d4a in QMetaObject::metacall(QObject*, QMetaObject::Call, int, void**) () from /usr//lib/libQtCore.so.4
#16 0x05742226 in QMetaCallEvent::placeMetaCall(QObject*) () from /usr//lib/libQtCore.so.4
#17 0x05743ac2 in QObject::event(QEvent*) () from /usr//lib/libQtCore.so.4
#18 0x00ff2e36 in QWidget::event(QEvent*) () from /usr//lib/libQtGui.so.4
#19 0x01412fb3 in QFrame::event(QEvent*) () from /usr//lib/libQtGui.so.4
#20 0x014b0857 in QAbstractScrollArea::event(QEvent*) () from /usr//lib/libQtGui.so.4
#21 0x0149967d in QTextEdit::event(QEvent*) () from /usr//lib/libQtGui.so.4
#22 0x0041d893 in KTextEdit::event(QEvent*) () from /usr//lib/libkdeui.so.5
#23 0x05d68824 in Worksheet::event(QEvent*) () from /usr/lib/kde4/libcantorpart.so
#24 0x00f9577c in QApplicationPrivate::notify_helper(QObject*, QEvent*) () from /usr//lib/libQtGui.so.4
#25 0x00f9b869 in QApplication::notify(QObject*, QEvent*) () from /usr//lib/libQtGui.so.4
#26 0x002faa9a in KApplication::notify(QObject*, QEvent*) () from /usr//lib/libkdeui.so.5
#27 0x05730feb in QCoreApplication::notifyInternal(QObject*, QEvent*) () from /usr//lib/libQtCore.so.4
#28 0x0573424b in QCoreApplicationPrivate::sendPostedEvents(QObject*, int, QThreadData*) () from /usr//lib/libQtCore.so.4
#29 0x0573440d in QCoreApplication::sendPostedEvents(QObject*, int) () from /usr//lib/libQtCore.so.4
#30 0x0575fd04 in ?? () from /usr//lib/libQtCore.so.4
#31 0x05f0c5e5 in g_main_context_dispatch () from /lib/libglib-2.0.so.0
#32 0x05f102d8 in ?? () from /lib/libglib-2.0.so.0
#33 0x05f104b8 in g_main_context_iteration () from /lib/libglib-2.0.so.0
#34 0x0575f7f5 in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr//lib/libQtCore.so.4
#35 0x01056de5 in ?? () from /usr//lib/libQtGui.so.4
#36 0x0572fa99 in QEventLoop::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr//lib/libQtCore.so.4
#37 0x0572ff1a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr//lib/libQtCore.so.4
#38 0x057344cf in QCoreApplication::exec() () from /usr//lib/libQtCore.so.4
#39 0x00f945a7 in QApplication::exec() () from /usr//lib/libQtGui.so.4
#40 0x0805050d in main ()

Reported using DrKonqi