Application: kdevelop (5.2.1)

Qt Version: 5.9.5
Frameworks Version: 5.44.0
Operating System: Linux 4.15.0-24-generic x86_64
Distribution: Ubuntu 18.04 LTS

-- Information about the crash:
- What I was doing when the application crashed:
Pressed enter when autofill was on an option with "__" at the beggining of the name.

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 0x7f03d4564940 (LWP 18586))]

Thread 15 (Thread 0x7f03693fb700 (LWP 18702)):
#0  0x00007f03ca3b79f3 in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x5610b50e5590) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  0x00007f03ca3b79f3 in __pthread_cond_wait_common (abstime=0x0, mutex=0x5610b50e5540, cond=0x5610b50e5568) at pthread_cond_wait.c:502
#2  0x00007f03ca3b79f3 in __pthread_cond_wait (cond=0x5610b50e5568, mutex=0x5610b50e5540) at pthread_cond_wait.c:655
#3  0x00007f03d133959b in QWaitCondition::wait(QMutex*, unsigned long) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007f03c6135ad5 in ThreadWeaver::Weaver::takeFirstAvailableJobOrSuspendOrWait(ThreadWeaver::Thread*, bool, bool, bool) () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#5  0x00007f03c6139ba8 in  () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#6  0x00007f03c6134c8d in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#7  0x00007f03c6139c02 in  () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#8  0x00007f03c6134c8d in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#9  0x00007f03c6139c02 in  () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#10 0x00007f03c6134c8d in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#11 0x00007f03c6137a6b in ThreadWeaver::Thread::run() () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#12 0x00007f03d133816d in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#13 0x00007f03ca3b16db in start_thread (arg=0x7f03693fb700) at pthread_create.c:463
#14 0x00007f03d0c2e88f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 14 (Thread 0x7f0369bfc700 (LWP 18701)):
#0  0x00007f03ca3b79f3 in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x5610b50e5590) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  0x00007f03ca3b79f3 in __pthread_cond_wait_common (abstime=0x0, mutex=0x5610b50e5540, cond=0x5610b50e5568) at pthread_cond_wait.c:502
#2  0x00007f03ca3b79f3 in __pthread_cond_wait (cond=0x5610b50e5568, mutex=0x5610b50e5540) at pthread_cond_wait.c:655
#3  0x00007f03d133959b in QWaitCondition::wait(QMutex*, unsigned long) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007f03c6135ad5 in ThreadWeaver::Weaver::takeFirstAvailableJobOrSuspendOrWait(ThreadWeaver::Thread*, bool, bool, bool) () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#5  0x00007f03c6139ba8 in  () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#6  0x00007f03c6134c8d in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#7  0x00007f03c6137a6b in ThreadWeaver::Thread::run() () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#8  0x00007f03d133816d in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#9  0x00007f03ca3b16db in start_thread (arg=0x7f0369bfc700) at pthread_create.c:463
#10 0x00007f03d0c2e88f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 13 (Thread 0x7f036a3fd700 (LWP 18700)):
#0  0x00007f03ca3b79f3 in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x5610b50e5590) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  0x00007f03ca3b79f3 in __pthread_cond_wait_common (abstime=0x0, mutex=0x5610b50e5540, cond=0x5610b50e5568) at pthread_cond_wait.c:502
#2  0x00007f03ca3b79f3 in __pthread_cond_wait (cond=0x5610b50e5568, mutex=0x5610b50e5540) at pthread_cond_wait.c:655
#3  0x00007f03d133959b in QWaitCondition::wait(QMutex*, unsigned long) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007f03c6135ad5 in ThreadWeaver::Weaver::takeFirstAvailableJobOrSuspendOrWait(ThreadWeaver::Thread*, bool, bool, bool) () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#5  0x00007f03c6139ba8 in  () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#6  0x00007f03c6134c8d in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#7  0x00007f03c6139c02 in  () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#8  0x00007f03c6134c8d in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#9  0x00007f03c6139c02 in  () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#10 0x00007f03c6134c8d in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#11 0x00007f03c6139c02 in  () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#12 0x00007f03c6134c8d in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#13 0x00007f03c6139c02 in  () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#14 0x00007f03c6134c8d in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#15 0x00007f03c6139c02 in  () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#16 0x00007f03c6134c8d in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#17 0x00007f03c6139c02 in  () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#18 0x00007f03c6134c8d in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#19 0x00007f03c6139c02 in  () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#20 0x00007f03c6134c8d in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#21 0x00007f03c6137a6b in ThreadWeaver::Thread::run() () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#22 0x00007f03d133816d in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#23 0x00007f03ca3b16db in start_thread (arg=0x7f036a3fd700) at pthread_create.c:463
#24 0x00007f03d0c2e88f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 12 (Thread 0x7f036abfe700 (LWP 18699)):
#0  0x00007f03ca3b79f3 in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x5610b50e5590) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  0x00007f03ca3b79f3 in __pthread_cond_wait_common (abstime=0x0, mutex=0x5610b50e5540, cond=0x5610b50e5568) at pthread_cond_wait.c:502
#2  0x00007f03ca3b79f3 in __pthread_cond_wait (cond=0x5610b50e5568, mutex=0x5610b50e5540) at pthread_cond_wait.c:655
#3  0x00007f03d133959b in QWaitCondition::wait(QMutex*, unsigned long) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007f03c6135ad5 in ThreadWeaver::Weaver::takeFirstAvailableJobOrSuspendOrWait(ThreadWeaver::Thread*, bool, bool, bool) () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#5  0x00007f03c6139ba8 in  () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#6  0x00007f03c6134c8d in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#7  0x00007f03c6139c02 in  () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#8  0x00007f03c6134c8d in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#9  0x00007f03c6139c02 in  () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#10 0x00007f03c6134c8d in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#11 0x00007f03c6139c02 in  () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#12 0x00007f03c6134c8d in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#13 0x00007f03c6139c02 in  () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#14 0x00007f03c6134c8d in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#15 0x00007f03c6139c02 in  () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#16 0x00007f03c6134c8d in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#17 0x00007f03c6139c02 in  () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#18 0x00007f03c6134c8d in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#19 0x00007f03c6139c02 in  () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#20 0x00007f03c6134c8d in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#21 0x00007f03c6139c02 in  () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#22 0x00007f03c6134c8d in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#23 0x00007f03c6137a6b in ThreadWeaver::Thread::run() () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#24 0x00007f03d133816d in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#25 0x00007f03ca3b16db in start_thread (arg=0x7f036abfe700) at pthread_create.c:463
#26 0x00007f03d0c2e88f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 11 (Thread 0x7f036b3ff700 (LWP 18698)):
#0  0x00007f03ca3b79f3 in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x5610b50e5590) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  0x00007f03ca3b79f3 in __pthread_cond_wait_common (abstime=0x0, mutex=0x5610b50e5540, cond=0x5610b50e5568) at pthread_cond_wait.c:502
#2  0x00007f03ca3b79f3 in __pthread_cond_wait (cond=0x5610b50e5568, mutex=0x5610b50e5540) at pthread_cond_wait.c:655
#3  0x00007f03d133959b in QWaitCondition::wait(QMutex*, unsigned long) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007f03c6135ad5 in ThreadWeaver::Weaver::takeFirstAvailableJobOrSuspendOrWait(ThreadWeaver::Thread*, bool, bool, bool) () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#5  0x00007f03c6139ba8 in  () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#6  0x00007f03c6134c8d in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#7  0x00007f03c6139c02 in  () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#8  0x00007f03c6134c8d in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#9  0x00007f03c6139c02 in  () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#10 0x00007f03c6134c8d in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#11 0x00007f03c6139c02 in  () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#12 0x00007f03c6134c8d in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#13 0x00007f03c6137a6b in ThreadWeaver::Thread::run() () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#14 0x00007f03d133816d in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#15 0x00007f03ca3b16db in start_thread (arg=0x7f036b3ff700) at pthread_create.c:463
#16 0x00007f03d0c2e88f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 10 (Thread 0x7f0371273700 (LWP 18629)):
#0  0x00007f03d0c1d0b4 in __GI___libc_read (fd=14, buf=0x7f0371272a30, nbytes=16) at ../sysdeps/unix/sysv/linux/read.c:27
#1  0x00007f03c7b48960 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f03c7b03f27 in g_main_context_check () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f03c7b043e0 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007f03c7b0454c in g_main_context_iteration () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007f03d156f90b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007f03d15149ea in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007f03d133322a in QThread::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007f0371c333c5 in  () at /usr/lib/x86_64-linux-gnu/qt5/qml/QtQuick/XmlListModel/libqmlxmllistmodelplugin.so
#9  0x00007f03d133816d in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#10 0x00007f03ca3b16db in start_thread (arg=0x7f0371273700) at pthread_create.c:463
#11 0x00007f03d0c2e88f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 9 (Thread 0x7f0379117700 (LWP 18603)):
#0  0x00007f03d0c21bf9 in __GI___poll (fds=0x7f0374004d70, nfds=1, timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:29
#1  0x00007f03c7b04439 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f03c7b0454c in g_main_context_iteration () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f03d156f90b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007f03d15149ea in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f03d133322a in QThread::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007f03cee2ca0f in  () at /usr/lib/x86_64-linux-gnu/libKDevPlatformLanguage.so.52
#7  0x00007f03d133816d in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007f03ca3b16db in start_thread (arg=0x7f0379117700) at pthread_create.c:463
#9  0x00007f03d0c2e88f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 8 (Thread 0x7f0392f50700 (LWP 18601)):
#0  0x00007f03c7b0133d in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#1  0x00007f03c7b038d3 in g_main_context_prepare () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f03c7b0436b in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f03c7b0454c in g_main_context_iteration () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007f03d156f90b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f03d15149ea in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007f03d133322a in QThread::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007f03d133816d in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007f03ca3b16db in start_thread (arg=0x7f0392f50700) at pthread_create.c:463
#9  0x00007f03d0c2e88f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 7 (Thread 0x7f039274f700 (LWP 18599)):
#0  0x00007f03ca3b9035 in __GI___pthread_getspecific (key=6) at pthread_getspecific.c:31
#1  0x00007f03c7b2c2f0 in g_thread_self () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f03c7b0453d in g_main_context_iteration () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f03d156f90b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007f03d15149ea in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f03d133322a in QThread::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007f03c9e406f5 in  () at /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#7  0x00007f03d133816d in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007f03ca3b16db in start_thread (arg=0x7f039274f700) at pthread_create.c:463
#9  0x00007f03d0c2e88f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 6 (Thread 0x7f0393fff700 (LWP 18595)):
#0  0x00007f03d0c21bf9 in __GI___poll (fds=0x7f038c003ce0, nfds=1, timeout=9950) at ../sysdeps/unix/sysv/linux/poll.c:29
#1  0x00007f03c7b04439 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f03c7b0454c in g_main_context_iteration () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f03d156f90b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007f03d15149ea in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f03d133322a in QThread::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007f03d133816d in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007f03ca3b16db in start_thread (arg=0x7f0393fff700) at pthread_create.c:463
#8  0x00007f03d0c2e88f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 5 (Thread 0x7f039ac1f700 (LWP 18590)):
#0  0x00007f03d0c1d0b4 in __GI___libc_read (fd=12, buf=0x7f039ac1e9e0, nbytes=16) at ../sysdeps/unix/sysv/linux/read.c:27
#1  0x00007f03c7b48960 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f03c7b03f27 in g_main_context_check () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f03c7b043e0 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007f03c7b0454c in g_main_context_iteration () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007f03d156f90b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007f03d15149ea in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007f03d133322a in QThread::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007f03ced2491b in  () at /usr/lib/x86_64-linux-gnu/libKDevPlatformLanguage.so.52
#9  0x00007f03d133816d in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#10 0x00007f03ca3b16db in start_thread (arg=0x7f039ac1f700) at pthread_create.c:463
#11 0x00007f03d0c2e88f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 4 (Thread 0x7f03a6af5700 (LWP 18589)):
#0  0x00007f03d0c3d6ff in __libc_enable_asynccancel () at ../sysdeps/unix/sysv/linux/x86_64/cancellation.S:67
#1  0x00007f03d0c21be6 in __GI___poll (fds=0x7f03a001b870, nfds=1, timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:29
#2  0x00007f03c7b04439 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f03c7b0454c in g_main_context_iteration () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007f03d156f90b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f03d15149ea in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007f03d133322a in QThread::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007f03d3277d45 in  () at /usr/lib/x86_64-linux-gnu/libQt5DBus.so.5
#8  0x00007f03d133816d in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#9  0x00007f03ca3b16db in start_thread (arg=0x7f03a6af5700) at pthread_create.c:463
#10 0x00007f03d0c2e88f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 3 (Thread 0x7f03ad17f700 (LWP 18588)):
#0  0x00007f03d0c21bf9 in __GI___poll (fds=0x7f03ad17eb68, nfds=1, timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:29
#1  0x00007f03c0d47747 in  () at /usr/lib/x86_64-linux-gnu/libxcb.so.1
#2  0x00007f03c0d4936a in xcb_wait_for_event () at /usr/lib/x86_64-linux-gnu/libxcb.so.1
#3  0x00007f03afd252a9 in  () at /usr/lib/x86_64-linux-gnu/libQt5XcbQpa.so.5
#4  0x00007f03d133816d in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f03ca3b16db in start_thread (arg=0x7f03ad17f700) at pthread_create.c:463
#6  0x00007f03d0c2e88f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 2 (Thread 0x7f03b1109700 (LWP 18587)):
#0  0x00007f03ca3b79f3 in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x7f03c5c65110) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  0x00007f03ca3b79f3 in __pthread_cond_wait_common (abstime=0x0, mutex=0x5610b4cb1a30, cond=0x7f03c5c650e8) at pthread_cond_wait.c:502
#2  0x00007f03ca3b79f3 in __pthread_cond_wait (cond=0x7f03c5c650e8, mutex=0x5610b4cb1a30) at pthread_cond_wait.c:655
#3  0x00007f03d0fb6620 in std::condition_variable::wait(std::unique_lock<std::mutex>&) () at /usr/lib/x86_64-linux-gnu/libstdc++.so.6
#4  0x00007f03c4fa60a7 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebKit.so.5
#5  0x00007f03c4fa61e9 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebKit.so.5
#6  0x00007f03d0fbc733 in  () at /usr/lib/x86_64-linux-gnu/libstdc++.so.6
#7  0x00007f03ca3b16db in start_thread (arg=0x7f03b1109700) at pthread_create.c:463
#8  0x00007f03d0c2e88f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 1 (Thread 0x7f03d4564940 (LWP 18586)):
[KCrash Handler]
#6  0x00007f03cede4c58 in KDevelop::FunctionType::returnType() const () at /usr/lib/x86_64-linux-gnu/libKDevPlatformLanguage.so.52
#7  0x00007f037eb02855 in  () at /usr/lib/x86_64-linux-gnu/libKDevClangPrivate.so.30
#8  0x00007f03cd9e568c in KateCompletionWidget::execute() () at /usr/lib/x86_64-linux-gnu/libKF5TextEditor.so.5
#9  0x00007f03cdb516ba in  () at /usr/lib/x86_64-linux-gnu/libKF5TextEditor.so.5
#10 0x00007f03cdacf5a6 in  () at /usr/lib/x86_64-linux-gnu/libKF5TextEditor.so.5
#11 0x00007f03cdad7423 in  () at /usr/lib/x86_64-linux-gnu/libKF5TextEditor.so.5
#12 0x00007f03d151668c in QCoreApplicationPrivate::sendThroughObjectEventFilters(QObject*, QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#13 0x00007f03d2294805 in QApplicationPrivate::notify_helper(QObject*, QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#14 0x00007f03d229d632 in QApplication::notify(QObject*, QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#15 0x00007f03d15169a8 in QCoreApplication::notifyInternal2(QObject*, QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#16 0x00007f03d22f07a5 in  () at /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#17 0x00007f03d229482c in QApplicationPrivate::notify_helper(QObject*, QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#18 0x00007f03d229c0f4 in QApplication::notify(QObject*, QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#19 0x00007f03d15169a8 in QCoreApplication::notifyInternal2(QObject*, QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#20 0x00007f03d1ad5090 in QGuiApplicationPrivate::processKeyEvent(QWindowSystemInterfacePrivate::KeyEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Gui.so.5
#21 0x00007f03d1ad9fd5 in QGuiApplicationPrivate::processWindowSystemEvent(QWindowSystemInterfacePrivate::WindowSystemEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Gui.so.5
#22 0x00007f03d1ab12eb in QWindowSystemInterface::sendWindowSystemEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Gui.so.5
#23 0x00007f03afd881c0 in  () at /usr/lib/x86_64-linux-gnu/libQt5XcbQpa.so.5
#24 0x00007f03c7b04287 in g_main_context_dispatch () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#25 0x00007f03c7b044c0 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#26 0x00007f03c7b0454c in g_main_context_iteration () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#27 0x00007f03d156f8ef in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#28 0x00007f03d15149ea in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#29 0x00007f03d151da84 in QCoreApplication::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#30 0x00005610b443a4f7 in  ()
#31 0x00007f03d0b2eb97 in __libc_start_main (main=0x5610b4434400, argc=1, argv=0x7ffccf678648, init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>, stack_end=0x7ffccf678638) at ../csu/libc-start.c:310
#32 0x00005610b443aa7a in _start ()

Reported using DrKonqi