Application: kdevelop (5.2.1)

Qt Version: 5.9.5
Frameworks Version: 5.44.0
Operating System: Linux 4.15.0-30-generic x86_64
Distribution: Ubuntu 18.04.1 LTS

-- Information about the crash:
- What I was doing when the application crashed:
I was hitting Ctrl + space to autocomplete a variable. The type seemd mis-analyzed and everytime I hit enter KDevelop crashed.
I have restarted KDevelop a few times and it kept crashing when doing the same manipulation.

The crash can be reproduced every time.

-- Backtrace:
Application: KDevelop (kdevelop), signal: Segmentation fault
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
[Current thread is 1 (Thread 0x7fc399073940 (LWP 13744))]

Thread 16 (Thread 0x7fc31e7fc700 (LWP 13892)):
#0  0x00007fc38c651cd9 in g_mutex_lock () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#1  0x00007fc38c60c340 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007fc38c60c54c in g_main_context_iteration () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007fc39607890b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007fc39601d9ea in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007fc395e3c22a in QThread::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007fc32efdc3c5 in  () at /usr/lib/x86_64-linux-gnu/qt5/qml/QtQuick/XmlListModel/libqmlxmllistmodelplugin.so
#7  0x00007fc395e4116d in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007fc38eeba6db in start_thread (arg=0x7fc31e7fc700) at pthread_create.c:463
#9  0x00007fc39573788f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 15 (Thread 0x7fc31ffff700 (LWP 13857)):
#0  0x00007fc38eec09f3 in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x55bf91114e84) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  0x00007fc38eec09f3 in __pthread_cond_wait_common (abstime=0x0, mutex=0x55bf91114e30, cond=0x55bf91114e58) at pthread_cond_wait.c:502
#2  0x00007fc38eec09f3 in __pthread_cond_wait (cond=0x55bf91114e58, mutex=0x55bf91114e30) at pthread_cond_wait.c:655
#3  0x00007fc395e4259b in QWaitCondition::wait(QMutex*, unsigned long) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007fc38ac3dad5 in ThreadWeaver::Weaver::takeFirstAvailableJobOrSuspendOrWait(ThreadWeaver::Thread*, bool, bool, bool) () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#5  0x00007fc38ac41ba8 in  () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#6  0x00007fc38ac3cc8d in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#7  0x00007fc38ac41c02 in  () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#8  0x00007fc38ac3cc8d in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#9  0x00007fc38ac3fa6b in ThreadWeaver::Thread::run() () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#10 0x00007fc395e4116d in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#11 0x00007fc38eeba6db in start_thread (arg=0x7fc31ffff700) at pthread_create.c:463
#12 0x00007fc39573788f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 14 (Thread 0x7fc32d01c700 (LWP 13854)):
#0  0x00007fc38eec09f3 in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x55bf91114e84) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  0x00007fc38eec09f3 in __pthread_cond_wait_common (abstime=0x0, mutex=0x55bf91114e30, cond=0x55bf91114e58) at pthread_cond_wait.c:502
#2  0x00007fc38eec09f3 in __pthread_cond_wait (cond=0x55bf91114e58, mutex=0x55bf91114e30) at pthread_cond_wait.c:655
#3  0x00007fc395e4259b in QWaitCondition::wait(QMutex*, unsigned long) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007fc38ac3dad5 in ThreadWeaver::Weaver::takeFirstAvailableJobOrSuspendOrWait(ThreadWeaver::Thread*, bool, bool, bool) () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#5  0x00007fc38ac41ba8 in  () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#6  0x00007fc38ac3cc8d in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#7  0x00007fc38ac41c02 in  () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#8  0x00007fc38ac3cc8d in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#9  0x00007fc38ac41c02 in  () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#10 0x00007fc38ac3cc8d in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#11 0x00007fc38ac41c02 in  () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#12 0x00007fc38ac3cc8d in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#13 0x00007fc38ac3fa6b in ThreadWeaver::Thread::run() () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#14 0x00007fc395e4116d in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#15 0x00007fc38eeba6db in start_thread (arg=0x7fc32d01c700) at pthread_create.c:463
#16 0x00007fc39573788f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 13 (Thread 0x7fc32d81d700 (LWP 13853)):
#0  0x00007fc38eec09f3 in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x55bf91114e84) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  0x00007fc38eec09f3 in __pthread_cond_wait_common (abstime=0x0, mutex=0x55bf91114e30, cond=0x55bf91114e58) at pthread_cond_wait.c:502
#2  0x00007fc38eec09f3 in __pthread_cond_wait (cond=0x55bf91114e58, mutex=0x55bf91114e30) at pthread_cond_wait.c:655
#3  0x00007fc395e4259b in QWaitCondition::wait(QMutex*, unsigned long) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007fc38ac3dad5 in ThreadWeaver::Weaver::takeFirstAvailableJobOrSuspendOrWait(ThreadWeaver::Thread*, bool, bool, bool) () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#5  0x00007fc38ac41ba8 in  () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#6  0x00007fc38ac3cc8d in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#7  0x00007fc38ac41c02 in  () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#8  0x00007fc38ac3cc8d in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#9  0x00007fc38ac41c02 in  () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#10 0x00007fc38ac3cc8d in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#11 0x00007fc38ac41c02 in  () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#12 0x00007fc38ac3cc8d in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#13 0x00007fc38ac41c02 in  () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#14 0x00007fc38ac3cc8d in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#15 0x00007fc38ac3fa6b in ThreadWeaver::Thread::run() () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#16 0x00007fc395e4116d in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#17 0x00007fc38eeba6db in start_thread (arg=0x7fc32d81d700) at pthread_create.c:463
#18 0x00007fc39573788f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 12 (Thread 0x7fc32e01e700 (LWP 13851)):
#0  0x00007fc38eec09f3 in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x55bf91114e84) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  0x00007fc38eec09f3 in __pthread_cond_wait_common (abstime=0x0, mutex=0x55bf91114e30, cond=0x55bf91114e58) at pthread_cond_wait.c:502
#2  0x00007fc38eec09f3 in __pthread_cond_wait (cond=0x55bf91114e58, mutex=0x55bf91114e30) at pthread_cond_wait.c:655
#3  0x00007fc395e4259b in QWaitCondition::wait(QMutex*, unsigned long) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007fc38ac3dad5 in ThreadWeaver::Weaver::takeFirstAvailableJobOrSuspendOrWait(ThreadWeaver::Thread*, bool, bool, bool) () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#5  0x00007fc38ac41ba8 in  () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#6  0x00007fc38ac3cc8d in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#7  0x00007fc38ac3fa6b in ThreadWeaver::Thread::run() () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#8  0x00007fc395e4116d in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#9  0x00007fc38eeba6db in start_thread (arg=0x7fc32e01e700) at pthread_create.c:463
#10 0x00007fc39573788f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 11 (Thread 0x7fc32e81f700 (LWP 13850)):
#0  0x00007fc38eec09f3 in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x55bf91114e84) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  0x00007fc38eec09f3 in __pthread_cond_wait_common (abstime=0x0, mutex=0x55bf91114e30, cond=0x55bf91114e58) at pthread_cond_wait.c:502
#2  0x00007fc38eec09f3 in __pthread_cond_wait (cond=0x55bf91114e58, mutex=0x55bf91114e30) at pthread_cond_wait.c:655
#3  0x00007fc395e4259b in QWaitCondition::wait(QMutex*, unsigned long) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007fc38ac3dad5 in ThreadWeaver::Weaver::takeFirstAvailableJobOrSuspendOrWait(ThreadWeaver::Thread*, bool, bool, bool) () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#5  0x00007fc38ac41ba8 in  () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#6  0x00007fc38ac3cc8d in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#7  0x00007fc38ac41c02 in  () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#8  0x00007fc38ac3cc8d in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#9  0x00007fc38ac41c02 in  () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#10 0x00007fc38ac3cc8d in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#11 0x00007fc38ac41c02 in  () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#12 0x00007fc38ac3cc8d in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#13 0x00007fc38ac41c02 in  () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#14 0x00007fc38ac3cc8d in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#15 0x00007fc38ac3fa6b in ThreadWeaver::Thread::run() () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#16 0x00007fc395e4116d in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#17 0x00007fc38eeba6db in start_thread (arg=0x7fc32e81f700) at pthread_create.c:463
#18 0x00007fc39573788f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 10 (Thread 0x7fc346cde700 (LWP 13776)):
#0  0x00007fc38c651cf4 in g_mutex_unlock () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#1  0x00007fc38c60bc39 in g_main_context_query () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007fc38c60c3b7 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007fc38c60c54c in g_main_context_iteration () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007fc39607890b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007fc39601d9ea in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007fc395e3c22a in QThread::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007fc393935a0f in  () at /usr/lib/x86_64-linux-gnu/libKDevPlatformLanguage.so.52
#8  0x00007fc395e4116d in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#9  0x00007fc38eeba6db in start_thread (arg=0x7fc346cde700) at pthread_create.c:463
#10 0x00007fc39573788f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 9 (Thread 0x7fc3464dd700 (LWP 13766)):
#0  0x00007fc3957260b4 in __GI___libc_read (fd=42, buf=0x7fc3464dca50, nbytes=16) at ../sysdeps/unix/sysv/linux/read.c:27
#1  0x00007fc38c650960 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007fc38c60bf27 in g_main_context_check () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007fc38c60c3e0 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007fc38c60c54c in g_main_context_iteration () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007fc39607890b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007fc39601d9ea in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007fc395e3c22a in QThread::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007fc395e4116d in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#9  0x00007fc38eeba6db in start_thread (arg=0x7fc3464dd700) at pthread_create.c:463
#10 0x00007fc39573788f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 8 (Thread 0x7fc347d8d700 (LWP 13762)):
#0  0x00007fc39572abf9 in __GI___poll (fds=0x7fc340004e10, nfds=1, timeout=10272) at ../sysdeps/unix/sysv/linux/poll.c:29
#1  0x00007fc38c60c439 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007fc38c60c54c in g_main_context_iteration () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007fc39607890b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007fc39601d9ea in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007fc395e3c22a in QThread::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007fc395e4116d in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007fc38eeba6db in start_thread (arg=0x7fc347d8d700) at pthread_create.c:463
#8  0x00007fc39573788f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 7 (Thread 0x7fc352df0700 (LWP 13757)):
#0  0x00007fc3957466ff in __libc_enable_asynccancel () at ../sysdeps/unix/sysv/linux/x86_64/cancellation.S:67
#1  0x00007fc39572abe6 in __GI___poll (fds=0x7fc348003ce0, nfds=1, timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:29
#2  0x00007fc38c60c439 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007fc38c60c54c in g_main_context_iteration () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007fc39607890b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007fc39601d9ea in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007fc395e3c22a in QThread::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007fc38e9496f5 in  () at /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#8  0x00007fc395e4116d in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#9  0x00007fc38eeba6db in start_thread (arg=0x7fc352df0700) at pthread_create.c:463
#10 0x00007fc39573788f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 6 (Thread 0x7fc3597d3700 (LWP 13755)):
#0  0x00007ffc6c1c2979 in  ()
#1  0x00007ffc6c1c2c30 in clock_gettime ()
#2  0x00007fc395746ea6 in __GI___clock_gettime (clock_id=1, tp=0x7fc3597d2960) at ../sysdeps/unix/clock_gettime.c:115
#3  0x00007fc396078221 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007fc396076a59 in QTimerInfoList::updateCurrentTime() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007fc396077035 in QTimerInfoList::timerWait(timespec&) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007fc39607867e in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007fc38c60b998 in g_main_context_prepare () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#8  0x00007fc38c60c36b in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#9  0x00007fc38c60c54c in g_main_context_iteration () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#10 0x00007fc39607890b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#11 0x00007fc39601d9ea in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#12 0x00007fc395e3c22a in QThread::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#13 0x00007fc39382d91b in  () at /usr/lib/x86_64-linux-gnu/libKDevPlatformLanguage.so.52
#14 0x00007fc395e4116d in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#15 0x00007fc38eeba6db in start_thread (arg=0x7fc3597d3700) at pthread_create.c:463
#16 0x00007fc39573788f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 5 (Thread 0x7fc35b012700 (LWP 13748)):
#0  0x00007fc38eec09f3 in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x55bf910bc7b8) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  0x00007fc38eec09f3 in __pthread_cond_wait_common (abstime=0x0, mutex=0x55bf910bc768, cond=0x55bf910bc790) at pthread_cond_wait.c:502
#2  0x00007fc38eec09f3 in __pthread_cond_wait (cond=0x55bf910bc790, mutex=0x55bf910bc768) at pthread_cond_wait.c:655
#3  0x00007fc36040046b in  () at /usr/lib/x86_64-linux-gnu/dri/nouveau_dri.so
#4  0x00007fc360400197 in  () at /usr/lib/x86_64-linux-gnu/dri/nouveau_dri.so
#5  0x00007fc38eeba6db in start_thread (arg=0x7fc35b012700) at pthread_create.c:463
#6  0x00007fc39573788f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 4 (Thread 0x7fc36b74d700 (LWP 13747)):
#0  0x00007fc39607880f in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#1  0x00007fc38c60b998 in g_main_context_prepare () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007fc38c60c36b in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007fc38c60c54c in g_main_context_iteration () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007fc39607890b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007fc39601d9ea in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007fc395e3c22a in QThread::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007fc397d80d45 in  () at /usr/lib/x86_64-linux-gnu/libQt5DBus.so.5
#8  0x00007fc395e4116d in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#9  0x00007fc38eeba6db in start_thread (arg=0x7fc36b74d700) at pthread_create.c:463
#10 0x00007fc39573788f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 3 (Thread 0x7fc371d7b700 (LWP 13746)):
#0  0x00007fc39572abf9 in __GI___poll (fds=0x7fc371d7ab68, nfds=1, timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:29
#1  0x00007fc38584f747 in  () at /usr/lib/x86_64-linux-gnu/libxcb.so.1
#2  0x00007fc38585136a in xcb_wait_for_event () at /usr/lib/x86_64-linux-gnu/libxcb.so.1
#3  0x00007fc3749212a9 in  () at /usr/lib/x86_64-linux-gnu/libQt5XcbQpa.so.5
#4  0x00007fc395e4116d in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007fc38eeba6db in start_thread (arg=0x7fc371d7b700) at pthread_create.c:463
#6  0x00007fc39573788f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 2 (Thread 0x7fc375c11700 (LWP 13745)):
#0  0x00007fc38eec09f3 in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x7fc38a76d110) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  0x00007fc38eec09f3 in __pthread_cond_wait_common (abstime=0x0, mutex=0x55bf90e3da00, cond=0x7fc38a76d0e8) at pthread_cond_wait.c:502
#2  0x00007fc38eec09f3 in __pthread_cond_wait (cond=0x7fc38a76d0e8, mutex=0x55bf90e3da00) at pthread_cond_wait.c:655
#3  0x00007fc395abf620 in std::condition_variable::wait(std::unique_lock<std::mutex>&) () at /usr/lib/x86_64-linux-gnu/libstdc++.so.6
#4  0x00007fc389aae0a7 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebKit.so.5
#5  0x00007fc389aae1e9 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebKit.so.5
#6  0x00007fc395ac5733 in  () at /usr/lib/x86_64-linux-gnu/libstdc++.so.6
#7  0x00007fc38eeba6db in start_thread (arg=0x7fc375c11700) at pthread_create.c:463
#8  0x00007fc39573788f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 1 (Thread 0x7fc399073940 (LWP 13744)):
[KCrash Handler]
#6  0x00007fc3938edc58 in KDevelop::FunctionType::returnType() const () at /usr/lib/x86_64-linux-gnu/libKDevPlatformLanguage.so.52
#7  0x00007fc336f8d855 in  () at /usr/lib/x86_64-linux-gnu/libKDevClangPrivate.so.30
#8  0x00007fc3924ee68c in KateCompletionWidget::execute() () at /usr/lib/x86_64-linux-gnu/libKF5TextEditor.so.5
#9  0x00007fc39265a6ba in  () at /usr/lib/x86_64-linux-gnu/libKF5TextEditor.so.5
#10 0x00007fc3925d85a6 in  () at /usr/lib/x86_64-linux-gnu/libKF5TextEditor.so.5
#11 0x00007fc3925e0423 in  () at /usr/lib/x86_64-linux-gnu/libKF5TextEditor.so.5
#12 0x00007fc39601f68c in QCoreApplicationPrivate::sendThroughObjectEventFilters(QObject*, QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#13 0x00007fc396d9d805 in QApplicationPrivate::notify_helper(QObject*, QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#14 0x00007fc396da6632 in QApplication::notify(QObject*, QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#15 0x00007fc39601f9a8 in QCoreApplication::notifyInternal2(QObject*, QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#16 0x00007fc396df97a5 in  () at /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#17 0x00007fc396d9d82c in QApplicationPrivate::notify_helper(QObject*, QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#18 0x00007fc396da50f4 in QApplication::notify(QObject*, QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#19 0x00007fc39601f9a8 in QCoreApplication::notifyInternal2(QObject*, QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#20 0x00007fc3965de090 in QGuiApplicationPrivate::processKeyEvent(QWindowSystemInterfacePrivate::KeyEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Gui.so.5
#21 0x00007fc3965e2fd5 in QGuiApplicationPrivate::processWindowSystemEvent(QWindowSystemInterfacePrivate::WindowSystemEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Gui.so.5
#22 0x00007fc3965ba2eb in QWindowSystemInterface::sendWindowSystemEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Gui.so.5
#23 0x00007fc3749841c0 in  () at /usr/lib/x86_64-linux-gnu/libQt5XcbQpa.so.5
#24 0x00007fc38c60c287 in g_main_context_dispatch () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#25 0x00007fc38c60c4c0 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#26 0x00007fc38c60c54c in g_main_context_iteration () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#27 0x00007fc3960788ef in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#28 0x00007fc39601d9ea in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#29 0x00007fc396026a84 in QCoreApplication::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#30 0x000055bf8f5264f7 in  ()
#31 0x00007fc395637b97 in __libc_start_main (main=0x55bf8f520400, argc=1, argv=0x7ffc6c1b11a8, init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>, stack_end=0x7ffc6c1b1198) at ../csu/libc-start.c:310
#32 0x000055bf8f526a7a in _start ()

Reported using DrKonqi