Application: kmail (4.14.9)
KDE Platform Version: 4.14.9
Qt Version: 4.8.6
Operating System: Linux 3.16.7-29-desktop x86_64
Distribution: "openSUSE 13.2 (Harlequin) (x86_64)"

-- Information about the crash:
- What I was doing when the application crashed:
I pressed "spell checking" 
This bug is triggered from time to time
I use the german lanuage for spell checking

The crash can be reproduced every time.

-- Backtrace:
Application: KMail (kmail), signal: Segmentation fault
Using host libthread_db library "/lib64/libthread_db.so.1".
[Current thread is 1 (Thread 0x7f6f7742f800 (LWP 25676))]

Thread 4 (Thread 0x7f6f506e7700 (LWP 25690)):
#0  0x00007f6f7258d05f in pthread_cond_wait@@GLIBC_2.3.2 () at /lib64/libpthread.so.0
#1  0x00007f6f67c8a686 in WTF::TCMalloc_PageHeap::scavengerThread() () at /usr/lib64/libQtWebKit.so.4
#2  0x00007f6f67c8a6b9 in  () at /usr/lib64/libQtWebKit.so.4
#3  0x00007f6f725890a4 in start_thread () at /lib64/libpthread.so.0
#4  0x00007f6f7478808d in clone () at /lib64/libc.so.6

Thread 3 (Thread 0x7f6f0f554700 (LWP 25691)):
#0  0x00007f6f7258d05f in pthread_cond_wait@@GLIBC_2.3.2 () at /lib64/libpthread.so.0
#1  0x00007f6f679fce7d in JSC::BlockAllocator::blockFreeingThreadMain() () at /usr/lib64/libQtWebKit.so.4
#2  0x00007f6f67cb21e6 in WTF::wtfThreadEntryPoint(void*) () at /usr/lib64/libQtWebKit.so.4
#3  0x00007f6f725890a4 in start_thread () at /lib64/libpthread.so.0
#4  0x00007f6f7478808d in clone () at /lib64/libc.so.6

Thread 2 (Thread 0x7f6f0e915700 (LWP 25692)):
#0  0x00007f6f7477fc5d in poll () at /lib64/libc.so.6
#1  0x00007f6f6c4b6be4 in  () at /usr/lib64/libglib-2.0.so.0
#2  0x00007f6f6c4b6cec in g_main_context_iteration () at /usr/lib64/libglib-2.0.so.0
#3  0x00007f6f75dda0de in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQtCore.so.4
#4  0x00007f6f75dabe6f in QEventLoop::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQtCore.so.4
#5  0x00007f6f75dac165 in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQtCore.so.4
#6  0x00007f6f75ca90bf in QThread::exec() () at /usr/lib64/libQtCore.so.4
#7  0x00007f6f75cab79f in  () at /usr/lib64/libQtCore.so.4
#8  0x00007f6f725890a4 in start_thread () at /lib64/libpthread.so.0
#9  0x00007f6f7478808d in clone () at /lib64/libc.so.6

Thread 1 (Thread 0x7f6f7742f800 (LWP 25676)):
[KCrash Handler]
#5  0x00007f6f521218f4 in aspeller::AffixMgr::suffix_check(aspeller::LookupInfo const&, acommon::ParmString, acommon::CheckInfo&, aspeller::GuessInfo*, int, aspeller::AffEntry*) const () at /usr/lib64/libaspell.so.15
#6  0x00007f6f52121fad in aspeller::AffixMgr::affix_check(aspeller::LookupInfo const&, acommon::ParmString, acommon::CheckInfo&, aspeller::GuessInfo*) const () at /usr/lib64/libaspell.so.15
#7  0x00007f6f520fa226 in  () at /usr/lib64/libaspell.so.15
#8  0x00007f6f520ffe0d in  () at /usr/lib64/libaspell.so.15
#9  0x00007f6f5210df74 in aspeller::SpellerImpl::suggest(acommon::MutableString) () at /usr/lib64/libaspell.so.15
#10 0x00007f6f5213933f in aspell_speller_suggest () at /usr/lib64/libaspell.so.15
#11 0x00007f6f52395539 in  () at /usr/lib64/enchant/libenchant_aspell.so
#12 0x00007f6f5259ba1b in enchant_dict_suggest () at /usr/lib64/libenchant.so.1
#13 0x00007f6f527dcea2 in  () at /usr/lib64/kde4/kspell_enchant.so
#14 0x00007f6f76946185 in Sonnet::Speller::suggest(QString const&) const () at /usr/lib64/libkdecore.so.5
#15 0x00007f6f7694988d in  () at /usr/lib64/libkdecore.so.5
#16 0x00007f6f76949370 in Sonnet::BackgroundChecker::suggest(QString const&) const () at /usr/lib64/libkdecore.so.5
#17 0x00007f6f76f02bce in Sonnet::Dialog::updateDialog(QString const&) () at /usr/lib64/libkdeui.so.5
#18 0x00007f6f76f03ac6 in Sonnet::Dialog::slotMisspelling(QString const&, int) () at /usr/lib64/libkdeui.so.5
#19 0x00007f6f75dc11fa in QMetaObject::activate(QObject*, QMetaObject const*, int, void**) () at /usr/lib64/libQtCore.so.4
#20 0x00007f6f76949453 in Sonnet::BackgroundChecker::misspelling(QString const&, int) () at /usr/lib64/libkdecore.so.5
#21 0x00007f6f75dc11fa in QMetaObject::activate(QObject*, QMetaObject const*, int, void**) () at /usr/lib64/libQtCore.so.4
#22 0x00007f6f769498d3 in  () at /usr/lib64/libkdecore.so.5
#23 0x00007f6f7694997b in  () at /usr/lib64/libkdecore.so.5
#24 0x00007f6f75dc559e in QObject::event(QEvent*) () at /usr/lib64/libQtCore.so.4
#25 0x00007f6f7514676c in QApplicationPrivate::notify_helper(QObject*, QEvent*) () at /usr/lib64/libQtGui.so.4
#26 0x00007f6f7514ccad in QApplication::notify(QObject*, QEvent*) () at /usr/lib64/libQtGui.so.4
#27 0x00007f6f76eb2e0a in KApplication::notify(QObject*, QEvent*) () at /usr/lib64/libkdeui.so.5
#28 0x00007f6f75dad2ad in QCoreApplication::notifyInternal(QObject*, QEvent*) () at /usr/lib64/libQtCore.so.4
#29 0x00007f6f75db057d in QCoreApplicationPrivate::sendPostedEvents(QObject*, int, QThreadData*) () at /usr/lib64/libQtCore.so.4
#30 0x00007f6f75dda8fe in  () at /usr/lib64/libQtCore.so.4
#31 0x00007f6f6c4b6a04 in g_main_context_dispatch () at /usr/lib64/libglib-2.0.so.0
#32 0x00007f6f6c4b6c48 in  () at /usr/lib64/libglib-2.0.so.0
#33 0x00007f6f6c4b6cec in g_main_context_iteration () at /usr/lib64/libglib-2.0.so.0
#34 0x00007f6f75dda0be in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQtCore.so.4
#35 0x00007f6f751e3676 in  () at /usr/lib64/libQtGui.so.4
#36 0x00007f6f75dabe6f in QEventLoop::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQtCore.so.4
#37 0x00007f6f75dac165 in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQtCore.so.4
#38 0x00007f6f75db15b9 in QCoreApplication::exec() () at /usr/lib64/libQtCore.so.4
#39 0x0000000000402f3f in  ()
#40 0x00007f6f746c4b05 in __libc_start_main () at /lib64/libc.so.6
#41 0x0000000000403414 in _start ()

Reported using DrKonqi