Bug 328527

Application: kwrite (4.10.5)
KDE Platform Version: 4.10.5
Qt Version: 4.8.5
Operating System: Linux 3.11.9-100.fc18.i686 i686
Distribution (Platform): Fedora RPMs

-- Information about the crash:
The KatePart crashes when loading a syntax highlighting XML fails due to invalid XML, or at least XML Qt THINKS is invalid (see https://bugreports.qt-project.org/browse/QTBUG-35459), instead of just disabling the offending syntax highlighting file.

- What I was doing when the application crashed:
1. I updated Qt to qt-4.8.5-12.fc18.i686 with the fix for CVE-2013-4549.
2. I created a dummy test.ly file (contents do not matter, it's only related to the highlighting scheme).
3. I started: kwrite test.ly, hitting the https://bugreports.qt-project.org/browse/QTBUG-35459 regression.
4. I got an error dialog:
"The error The XML entity "commands-other" expands too a string that is too large to process (2594 characters > 1024).
has been detected in the file /usr/share/kde4/apps/katepart/syntax/lilypond.xml at 15/56"
(The "expands too" misspelling is Qt's fault and already reported at https://bugreports.qt-project.org/browse/QTBUG-35460 .)
5. I got an information dialog:
"Since there has been an error parsing the highlighting description, this highlighting will be disabled"
6. At this point, KWrite crashed on me.

The crash can be reproduced every time.

-- Backtrace:
Application: KWrite (kwrite), signal: Segmentation fault
Using host libthread_db library "/lib/libthread_db.so.1".
[Current thread is 1 (Thread 0xb481e780 (LWP 8740))]

Thread 3 (Thread 0xb1244b40 (LWP 8741)):
#0  0xb7792424 in __kernel_vsyscall ()
#1  0xb5b1218c in pthread_cond_wait@@GLIBC_2.3.2 () from /lib/libpthread.so.0
#2  0xb189fa0d in QTWTF::TCMalloc_PageHeap::scavengerThread() () from /lib/libQtScript.so.4
#3  0xb189fa40 in QTWTF::TCMalloc_PageHeap::runScavengerThread(void*) () from /lib/libQtScript.so.4
#4  0xb5b0eaff in start_thread () from /lib/libpthread.so.0
#5  0xb58800ee in clone () from /lib/libc.so.6

Thread 2 (Thread 0xaf33ab40 (LWP 8742)):
#0  0xb7792424 in __kernel_vsyscall ()
#1  0xb5b1218c in pthread_cond_wait@@GLIBC_2.3.2 () from /lib/libpthread.so.0
#2  0xb5b8b608 in QWaitCondition::wait(QMutex*, unsigned long) () from /lib/libQtCore.so.4
#3  0xb1a0da7f in KLFKteLatexRunThread::run() () from /usr/lib/kde4/ktexteditor_klf.so
#4  0xb5b8b00a in QThreadPrivate::start(void*) () from /lib/libQtCore.so.4
#5  0xb5b0eaff in start_thread () from /lib/libpthread.so.0
#6  0xb58800ee in clone () from /lib/libc.so.6

Thread 1 (Thread 0xb481e780 (LWP 8740)):
[KCrash Handler]
#6  ref (this=0x0) at /usr/include/QtCore/qatomic_i386.h:120
#7  QString (other=..., this=0xbfd3c5cc) at /usr/include/QtCore/qstring.h:726
#8  hlKeyForAttrib (i=0, this=0x93c8a58) at /usr/src/debug/kate-4.10.5/part/syntax/katehighlight.cpp:1041
#9  KateHighlighting::getCommentStart (this=0x93c8a58, attrib=0) at /usr/src/debug/kate-4.10.5/part/syntax/katehighlight.cpp:1081
#10 0xb15c255f in KateView::slotHlChanged (this=0xb15c5f68 <KateView::qt_static_metacall(QObject*, QMetaObject::Call, int, void**)+3128>) at /usr/src/debug/kate-4.10.5/part/view/kateview.cpp:1836
#11 0xbfd3c738 in ?? ()

Possible duplicates by query: bug 323278.

Reported using DrKonqi