Application: cantor (0.2)
KDE Platform Version: 4.7.2 (4.7.2)
Qt Version: 4.7.4
Operating System: Linux 3.0.0-12-generic x86_64
Distribution: Ubuntu 11.10

-- Information about the crash:
- What I was doing when the application crashed:

Opening a file previously created using Maxima infrastructure; but it also crashes opening Octave files.

The crash can be reproduced every time.

-- Backtrace:
Application: Cantor (cantor), signal: Segmentation fault
[Current thread is 1 (Thread 0x7f70acc00780 (LWP 6239))]

Thread 3 (Thread 0x7f70926ed700 (LWP 6281)):
#0  0x00007f70a6b4a03e in __pthread_mutex_lock (mutex=0x2224fd8) at pthread_mutex_lock.c:62
#1  0x00007f70a667575f in g_main_context_check () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f70a6675f82 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f70a6676429 in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007f70aa168f3e in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQtCore.so.4
#5  0x00007f70aa13ccf2 in QEventLoop::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQtCore.so.4
#6  0x00007f70aa13cef7 in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQtCore.so.4
#7  0x00007f70aa05427f in QThread::exec() () from /usr/lib/x86_64-linux-gnu/libQtCore.so.4
#8  0x00007f70aa11fcbf in ?? () from /usr/lib/x86_64-linux-gnu/libQtCore.so.4
#9  0x00007f70aa056d05 in ?? () from /usr/lib/x86_64-linux-gnu/libQtCore.so.4
#10 0x00007f70a6b47efc in start_thread (arg=0x7f70926ed700) at pthread_create.c:304
#11 0x00007f70a9a0c89d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#12 0x0000000000000000 in ?? ()

Thread 2 (Thread 0x7f7091a40700 (LWP 6303)):
#0  0x00007f70a6b4a034 in __pthread_mutex_lock (mutex=0x22c9198) at pthread_mutex_lock.c:61
#1  0x00007f70a6675023 in g_main_context_prepare () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f70a6675dfd in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f70a6676429 in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007f70aa168f3e in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQtCore.so.4
#5  0x00007f70aa13ccf2 in QEventLoop::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQtCore.so.4
#6  0x00007f70aa13cef7 in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQtCore.so.4
#7  0x00007f70aa05427f in QThread::exec() () from /usr/lib/x86_64-linux-gnu/libQtCore.so.4
#8  0x00007f70aa11fcbf in ?? () from /usr/lib/x86_64-linux-gnu/libQtCore.so.4
#9  0x00007f70aa056d05 in ?? () from /usr/lib/x86_64-linux-gnu/libQtCore.so.4
#10 0x00007f70a6b47efc in start_thread (arg=0x7f7091a40700) at pthread_create.c:304
#11 0x00007f70a9a0c89d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#12 0x0000000000000000 in ?? ()

Thread 1 (Thread 0x7f70acc00780 (LWP 6239)):
[KCrash Handler]
#6  0x00007f70aadee298 in QTextTable::cellAt(int, int) const () from /usr/lib/x86_64-linux-gnu/libQtGui.so.4
#7  0x00007f709b5ce0d8 in CommandEntry::updatePrompt (this=0x21939a0) at ../../src/commandentry.cpp:823
#8  0x00007f709b5beb4c in CommandEntry::qt_metacall (this=0x21939a0, _c=QMetaObject::InvokeMetaMethod, _id=<optimized out>, _a=0x7fff2210ac10) at moc_commandentry.cpp:88
#9  0x00007f70aa150eba in QMetaObject::activate(QObject*, QMetaObject const*, int, void**) () from /usr/lib/x86_64-linux-gnu/libQtCore.so.4
#10 0x00007f709b5c76d6 in enableExpressionNumbering (enable=<optimized out>, this=0x1944170) at ../../src/worksheet.cpp:824
#11 Worksheet::loginToSession (this=0x1944170) at ../../src/worksheet.cpp:107
#12 0x00007f709b5cb3f2 in Worksheet::qt_metacall (this=0x1944170, _c=QMetaObject::InvokeMetaMethod, _id=38, _a=0x2479a50) at ./worksheet.moc:193
#13 0x00007f70aa154a5e in QObject::event(QEvent*) () from /usr/lib/x86_64-linux-gnu/libQtCore.so.4
#14 0x00007f70aab8e6eb in QWidget::event(QEvent*) () from /usr/lib/x86_64-linux-gnu/libQtGui.so.4
#15 0x00007f70aaf374f6 in QFrame::event(QEvent*) () from /usr/lib/x86_64-linux-gnu/libQtGui.so.4
#16 0x00007f70aafb923b in QAbstractScrollArea::event(QEvent*) () from /usr/lib/x86_64-linux-gnu/libQtGui.so.4
#17 0x00007f70aafa59d0 in QTextEdit::event(QEvent*) () from /usr/lib/x86_64-linux-gnu/libQtGui.so.4
#18 0x00007f709b5c6f10 in Worksheet::event (this=0x1944170, event=0x18a44b0) at ../../src/worksheet.cpp:148
#19 0x00007f70aab3e424 in QApplicationPrivate::notify_helper(QObject*, QEvent*) () from /usr/lib/x86_64-linux-gnu/libQtGui.so.4
#20 0x00007f70aab43291 in QApplication::notify(QObject*, QEvent*) () from /usr/lib/x86_64-linux-gnu/libQtGui.so.4
#21 0x00007f70ac601126 in KApplication::notify(QObject*, QEvent*) () from /usr/lib/libkdeui.so.5
#22 0x00007f70aa13dafc in QCoreApplication::notifyInternal(QObject*, QEvent*) () from /usr/lib/x86_64-linux-gnu/libQtCore.so.4
#23 0x00007f70aa14151f in QCoreApplicationPrivate::sendPostedEvents(QObject*, int, QThreadData*) () from /usr/lib/x86_64-linux-gnu/libQtCore.so.4
#24 0x00007f70aa168a73 in ?? () from /usr/lib/x86_64-linux-gnu/libQtCore.so.4
#25 0x00007f70a6675a5d in g_main_context_dispatch () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#26 0x00007f70a6676258 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#27 0x00007f70a6676429 in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#28 0x00007f70aa168ed6 in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQtCore.so.4
#29 0x00007f70aabe607e in ?? () from /usr/lib/x86_64-linux-gnu/libQtGui.so.4
#30 0x00007f70aa13ccf2 in QEventLoop::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQtCore.so.4
#31 0x00007f70aa13cef7 in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQtCore.so.4
#32 0x00007f70aa141789 in QCoreApplication::exec() () from /usr/lib/x86_64-linux-gnu/libQtCore.so.4
#33 0x000000000040a227 in main (argc=5, argv=0x7fff2210bc68) at ../../src/main.cpp:87

Possible duplicates by query: bug 272551, bug 271158, bug 262049, bug 259868, bug 258286.

Reported using DrKonqi