Application: kdevelop (3.9.99 (using KDevPlatform 0.9.99))
KDE Platform Version: 4.4.2 (KDE 4.4.2)
Qt Version: 4.6.2
Operating System: Linux 2.6.32-19-generic x86_64
Distribution: Ubuntu lucid (development branch)

-- Information about the crash:
This happens everytime I close Kdevelop. I am using a beta version, so I expect some things to still be sorted out. The only thing that I can think of is I have the set of source files open in the editor when I exit. Nothing really happens, the KDE Crash Reporting Assistant just shows up. All of my files that I was working on are unaffected.

The crash can be reproduced every time.

 -- Backtrace:
Application: KDevelop (kdevelop.bin), signal: Segmentation fault
[Current thread is 1 (Thread 0x7f3ca326e760 (LWP 2730))]

Thread 4 (Thread 0x7f3c8f4ff710 (LWP 2731)):
#0  pthread_cond_timedwait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_timedwait.S:211
#1  0x00007f3ca1a14692 in QWaitConditionPrivate::wait (this=<value optimized out>, mutex=0x198e0a0, time=200000) at thread/qwaitcondition_unix.cpp:85
#2  QWaitCondition::wait (this=<value optimized out>, mutex=0x198e0a0, time=200000) at thread/qwaitcondition_unix.cpp:159
#3  0x00007f3c9d49f2be in ?? () from /usr/lib/libkdevplatformlanguage.so.1
#4  0x00007f3ca1a13775 in QThreadPrivate::start (arg=0x198e080) at thread/qthread_unix.cpp:248
#5  0x00007f3ca04569ca in start_thread (arg=<value optimized out>) at pthread_create.c:300
#6  0x00007f3ca07536dd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#7  0x0000000000000000 in ?? ()

Thread 3 (Thread 0x7f3c8526b710 (LWP 2732)):
#0  __lll_lock_wait_private () at ../nptl/sysdeps/unix/sysv/linux/x86_64/lowlevellock.S:97
#1  0x00007f3ca06ec3ac in _L_lock_12430 () from /lib/libc.so.6
#2  0x00007f3ca06eae48 in *__GI___libc_free (mem=0x7f3ca09eae40) at malloc.c:3736
#3  0x00007f3c9ae391ba in ?? () from /lib/libglib-2.0.so.0
#4  0x00007f3ca1b32013 in ~QEventDispatcherGlib (this=0x226dbb0, __in_chrg=<value optimized out>) at kernel/qeventdispatcher_glib.cpp:366
#5  0x00007f3ca1a13364 in QThreadPrivate::finish (arg=<value optimized out>) at thread/qthread_unix.cpp:284
#6  0x00007f3ca1a1377d in ~__pthread_cleanup_class (arg=0x7f3ca1e1bf20) at /usr/include/pthread.h:535
#7  QThreadPrivate::start (arg=0x7f3ca1e1bf20) at thread/qthread_unix.cpp:253
#8  0x00007f3ca04569ca in start_thread (arg=<value optimized out>) at pthread_create.c:300
#9  0x00007f3ca07536dd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#10 0x0000000000000000 in ?? ()

Thread 2 (Thread 0x7f3c8485d710 (LWP 2737)):
#0  0x00007fff923ff904 in clock_gettime ()
#1  0x00007f3c9b0dc09f in *__GI_clock_gettime (clock_id=1, tp=0x7f3c8485cb00) at ../sysdeps/unix/clock_gettime.c:100
#2  0x00007f3ca1b2e99f in qt_gettime () at kernel/qcore_unix.cpp:111
#3  0x00007f3ca1b336ad in QTimerInfoList::updateCurrentTime (this=0x1) at kernel/qeventdispatcher_unix.cpp:340
#4  0x00007f3ca1b336d5 in QTimerInfoList::timerWait (this=0x1, tm=...) at kernel/qeventdispatcher_unix.cpp:443
#5  0x00007f3ca1b3175d in timerSourcePrepareHelper (src=<value optimized out>, timeout=0x7f3c8485cc1c) at kernel/qeventdispatcher_glib.cpp:136
#6  0x00007f3ca1b31805 in timerSourcePrepare (source=0x1, timeout=0x7f3c8485cb00) at kernel/qeventdispatcher_glib.cpp:169
#7  0x00007f3c9ae3ceb1 in g_main_context_prepare () from /lib/libglib-2.0.so.0
#8  0x00007f3c9ae3d318 in ?? () from /lib/libglib-2.0.so.0
#9  0x00007f3c9ae3d8fc in g_main_context_iteration () from /lib/libglib-2.0.so.0
#10 0x00007f3ca1b31566 in QEventDispatcherGlib::processEvents (this=0x2469fa0, flags=<value optimized out>) at kernel/qeventdispatcher_glib.cpp:414
#11 0x00007f3ca1b06992 in QEventLoop::processEvents (this=<value optimized out>, flags=) at kernel/qeventloop.cpp:149
#12 0x00007f3ca1b06d6c in QEventLoop::exec (this=0x7f3c8485cdb0, flags=) at kernel/qeventloop.cpp:201
#13 0x00007f3ca1a10d59 in QThread::exec (this=<value optimized out>) at thread/qthread.cpp:487
#14 0x00007f3ca1ae7178 in QInotifyFileSystemWatcherEngine::run (this=0x24629f0) at io/qfilesystemwatcher_inotify.cpp:248
#15 0x00007f3ca1a13775 in QThreadPrivate::start (arg=0x24629f0) at thread/qthread_unix.cpp:248
#16 0x00007f3ca04569ca in start_thread (arg=<value optimized out>) at pthread_create.c:300
#17 0x00007f3ca07536dd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#18 0x0000000000000000 in ?? ()

Thread 1 (Thread 0x7f3ca326e760 (LWP 2730)):
[KCrash Handler]
#5  0x00007f3ca06e476c in malloc_consolidate (av=0x7f3ca09eae40) at malloc.c:5142
#6  0x00007f3ca06e7460 in _int_free (av=0x7f3ca09eae40, p=0x29e5300) at malloc.c:5015
#7  0x00007f3ca06eae53 in *__GI___libc_free (mem=<value optimized out>) at malloc.c:3738
#8  0x00007f3ca1a2f9c8 in QHashData::free_helper (this=0x44a72a0, node_delete=0x7f3ca109d230 <QHash<unsigned long long, QGradientCache::CacheInfo>::deleteNode2(QHashData::Node*)>)
    at tools/qhash.cpp:276
#9  0x00007f3ca109cd8f in QGlobalStaticDeleter<QGradientCache>::~QGlobalStaticDeleter() () from /usr/lib/libQtGui.so.4
#10 0x00007f3ca06a6262 in __run_exit_handlers (status=0) at exit.c:78
#11 *__GI_exit (status=0) at exit.c:100
#12 0x00007f3ca068bc54 in __libc_start_main (main=<value optimized out>, argc=<value optimized out>, ubp_av=<value optimized out>, init=<value optimized out>, fini=<value optimized out>, 
    rtld_fini=<value optimized out>, stack_end=0x7fff92397298) at libc-start.c:258
#13 0x0000000000404359 in _start ()

Reported using DrKonqi