Application: kdevelop (3.9.98 (using KDevPlatform 0.9.98))
KDE Platform Version: 4.4.1 (KDE 4.4.1)
Qt Version: 4.6.2
Operating System: Linux 2.6.32-ARCH x86_64
Distribution: "Arch Linux - A simple, lightweight linux distribution."

-- Information about the crash:
I had my little python project open and was typing along, then, in the middle of an expression, kdevelop just crashed.

 -- Backtrace:
Application: KDevelop (kdevelop.bin), signal: Segmentation fault
[Current thread is 1 (Thread 0x7f1991f61760 (LWP 10399))]

Thread 5 (Thread 0x7f197cd59710 (LWP 10546)):
#0  0x00007f198f1e43e9 in pthread_cond_timedwait@@GLIBC_2.3.2 () from /lib/libpthread.so.0
#1  0x00007f199074f082 in QWaitCondition::wait(QMutex*, unsigned long) () from /usr/lib/libQtCore.so.4
#2  0x00007f198bd13bae in KDevelop::DUChainPrivate::CleanupThread::run() () from /usr/lib/libkdevplatformlanguage.so.1
#3  0x00007f199074e155 in ?? () from /usr/lib/libQtCore.so.4
#4  0x00007f198f1df81a in start_thread () from /lib/libpthread.so.0
#5  0x00007f198f4c3c7d in clone () from /lib/libc.so.6
#6  0x0000000000000000 in ?? ()

Thread 4 (Thread 0x7f196e616710 (LWP 10802)):
#0  0x00007f198f1e407c in pthread_cond_wait@@GLIBC_2.3.2 () from /lib/libpthread.so.0
#1  0x00007f19878dc7a6 in ?? () from /usr/lib/libQtScript.so.4
#2  0x00007f19878dc7e9 in ?? () from /usr/lib/libQtScript.so.4
#3  0x00007f198f1df81a in start_thread () from /lib/libpthread.so.0
#4  0x00007f198f4c3c7d in clone () from /lib/libc.so.6
#5  0x0000000000000000 in ?? ()

Thread 3 (Thread 0x7f196ee17710 (LWP 21749)):
#0  0x00007f198f1e407c in pthread_cond_wait@@GLIBC_2.3.2 () from /lib/libpthread.so.0
#1  0x00007f199074f11b in QWaitCondition::wait(QMutex*, unsigned long) () from /usr/lib/libQtCore.so.4
#2  0x00007f198641d796 in ThreadWeaver::WeaverImpl::blockThreadUntilJobsAreBeingAssigned(ThreadWeaver::Thread*) () from /usr/lib/libthreadweaver.so.4
#3  0x00007f198641fdab in ThreadWeaver::WorkingHardState::applyForWork(ThreadWeaver::Thread*, ThreadWeaver::Job*) () from /usr/lib/libthreadweaver.so.4
#4  0x00007f198641e2ff in ThreadWeaver::ThreadRunHelper::run(ThreadWeaver::WeaverImpl*, ThreadWeaver::Thread*) () from /usr/lib/libthreadweaver.so.4
#5  0x00007f198641e868 in ThreadWeaver::Thread::run() () from /usr/lib/libthreadweaver.so.4
#6  0x00007f199074e155 in ?? () from /usr/lib/libQtCore.so.4
#7  0x00007f198f1df81a in start_thread () from /lib/libpthread.so.0
#8  0x00007f198f4c3c7d in clone () from /lib/libc.so.6
#9  0x0000000000000000 in ?? ()

Thread 2 (Thread 0x7f1968cef710 (LWP 21750)):
#0  0x00007f198f1e407c in pthread_cond_wait@@GLIBC_2.3.2 () from /lib/libpthread.so.0
#1  0x00007f199074f11b in QWaitCondition::wait(QMutex*, unsigned long) () from /usr/lib/libQtCore.so.4
#2  0x00007f198641d796 in ThreadWeaver::WeaverImpl::blockThreadUntilJobsAreBeingAssigned(ThreadWeaver::Thread*) () from /usr/lib/libthreadweaver.so.4
#3  0x00007f198641fdab in ThreadWeaver::WorkingHardState::applyForWork(ThreadWeaver::Thread*, ThreadWeaver::Job*) () from /usr/lib/libthreadweaver.so.4
#4  0x00007f198641e2ff in ThreadWeaver::ThreadRunHelper::run(ThreadWeaver::WeaverImpl*, ThreadWeaver::Thread*) () from /usr/lib/libthreadweaver.so.4
#5  0x00007f198641e868 in ThreadWeaver::Thread::run() () from /usr/lib/libthreadweaver.so.4
#6  0x00007f199074e155 in ?? () from /usr/lib/libQtCore.so.4
#7  0x00007f198f1df81a in start_thread () from /lib/libpthread.so.0
#8  0x00007f198f4c3c7d in clone () from /lib/libc.so.6
#9  0x0000000000000000 in ?? ()

Thread 1 (Thread 0x7f1991f61760 (LWP 10399)):
[KCrash Handler]
#5  0x00007f196c3546cf in KateCodeFoldingTree::removeOpening(KateCodeFoldingNode*, unsigned int) () from /usr/lib/kde4/katepart.so
#6  0x00007f196c35498e in KateCodeFoldingTree::cleanupUnneededNodes(unsigned int) () from /usr/lib/kde4/katepart.so
#7  0x00007f196c35511c in KateCodeFoldingTree::updateLine(unsigned int, QVector<int>*, bool*, bool, bool) () from /usr/lib/kde4/katepart.so
#8  0x00007f196c2e6e13 in KateBuffer::doHighlight(int, int, bool) () from /usr/lib/kde4/katepart.so
#9  0x00007f196c2e9061 in KateBuffer::editEnd() () from /usr/lib/kde4/katepart.so
#10 0x00007f196c2cd8fc in KateDocument::editEnd() () from /usr/lib/kde4/katepart.so
#11 0x00007f196c2cfc10 in KateDocument::typeChars(KateView*, QString const&) () from /usr/lib/kde4/katepart.so
#12 0x00007f196c373180 in KateViewInternal::keyPressEvent(QKeyEvent*) () from /usr/lib/kde4/katepart.so
#13 0x00007f196c3723c2 in KateViewInternal::eventFilter(QObject*, QEvent*) () from /usr/lib/kde4/katepart.so
#14 0x00007f1990841bb7 in QCoreApplicationPrivate::sendThroughObjectEventFilters(QObject*, QEvent*) () from /usr/lib/libQtCore.so.4
#15 0x00007f198fc065bc in QApplicationPrivate::notify_helper(QObject*, QEvent*) () from /usr/lib/libQtGui.so.4
#16 0x00007f198fc0e395 in QApplication::notify(QObject*, QEvent*) () from /usr/lib/libQtGui.so.4
#17 0x00007f1990d74d36 in KApplication::notify(QObject*, QEvent*) () from /usr/lib/libkdeui.so.5
#18 0x00007f199084279c in QCoreApplication::notifyInternal(QObject*, QEvent*) () from /usr/lib/libQtCore.so.4
#19 0x00007f198fcafaaa in ?? () from /usr/lib/libQtGui.so.4
#20 0x00007f198fcb2001 in ?? () from /usr/lib/libQtGui.so.4
#21 0x00007f198fc8aa74 in QApplication::x11ProcessEvent(_XEvent*) () from /usr/lib/libQtGui.so.4
#22 0x00007f198fcb5172 in ?? () from /usr/lib/libQtGui.so.4
#23 0x00007f198940626e in g_main_context_dispatch () from /usr/lib/libglib-2.0.so.0
#24 0x00007f1989409c28 in g_main_context_iterate () from /usr/lib/libglib-2.0.so.0
#25 0x00007f1989409d50 in g_main_context_iteration () from /usr/lib/libglib-2.0.so.0
#26 0x00007f199086bc13 in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/libQtCore.so.4
#27 0x00007f198fcb4d6e in ?? () from /usr/lib/libQtGui.so.4
#28 0x00007f19908410c2 in QEventLoop::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/libQtCore.so.4
#29 0x00007f199084149c in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/libQtCore.so.4
#30 0x00007f19908451db in QCoreApplication::exec() () from /usr/lib/libQtCore.so.4
#31 0x0000000000405d47 in _start ()

Reported using DrKonqi