Application: kdevelop (5.2.2)

Qt Version: 5.5.1
Operating System: Linux 4.4.0-124-generic x86_64
Distribution: Ubuntu 16.04.4 LTS

-- Information about the crash:
- What I was doing when the application crashed:  Loading a CMakeLists.txt project, super simple file, couple of lines, this branch:  https://github.com/OvermindDL1/sdl_test/tree/cmake

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 0x7f8abf1eb8c0 (LWP 23575))]

Thread 22 (Thread 0x7f8a69fb6700 (LWP 23995)):
#0  pthread_cond_timedwait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_timedwait.S:225
#1  0x00007f8ad77df996 in QWaitConditionPrivate::wait_relative (time=30000, this=0x1cad570) at thread/qwaitcondition_unix.cpp:126
#2  QWaitConditionPrivate::wait (time=30000, this=0x1cad570) at thread/qwaitcondition_unix.cpp:134
#3  QWaitCondition::wait (this=this@entry=0x1ca8230, mutex=mutex@entry=0x1c5bfa0, time=30000) at thread/qwaitcondition_unix.cpp:208
#4  0x00007f8ad77db463 in QThreadPoolThread::run (this=0x1ca8220) at thread/qthreadpool.cpp:127
#5  0x00007f8ad77de7be in QThreadPrivate::start (arg=0x1ca8220) at thread/qthread_unix.cpp:331
#6  0x00007f8ad0d356ba in start_thread (arg=0x7f8a69fb6700) at pthread_create.c:333
#7  0x00007f8ad70ea41d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 21 (Thread 0x7f8a6affc700 (LWP 23832)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007f8ad77dfa5b in QWaitConditionPrivate::wait (time=18446744073709551615, this=0x1c9b930) at thread/qwaitcondition_unix.cpp:136
#2  QWaitCondition::wait (this=<optimized out>, mutex=0x178fff0, time=18446744073709551615) at thread/qwaitcondition_unix.cpp:208
#3  0x00007f8accbcc2bf in ThreadWeaver::Weaver::takeFirstAvailableJobOrSuspendOrWait(ThreadWeaver::Thread*, bool, bool, bool) () from /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#4  0x00007f8accbd04e8 in ?? () from /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#5  0x00007f8accbcb46d in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () from /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#6  0x00007f8accbce353 in ThreadWeaver::Thread::run() () from /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#7  0x00007f8ad77de7be in QThreadPrivate::start (arg=0x7f8a40002990) at thread/qthread_unix.cpp:331
#8  0x00007f8ad0d356ba in start_thread (arg=0x7f8a6affc700) at pthread_create.c:333
#9  0x00007f8ad70ea41d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 20 (Thread 0x7f8a6b7fd700 (LWP 23831)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007f8ad77dfa5b in QWaitConditionPrivate::wait (time=18446744073709551615, this=0x1c9b930) at thread/qwaitcondition_unix.cpp:136
#2  QWaitCondition::wait (this=<optimized out>, mutex=0x178fff0, time=18446744073709551615) at thread/qwaitcondition_unix.cpp:208
#3  0x00007f8accbcc2bf in ThreadWeaver::Weaver::takeFirstAvailableJobOrSuspendOrWait(ThreadWeaver::Thread*, bool, bool, bool) () from /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#4  0x00007f8accbd04e8 in ?? () from /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#5  0x00007f8accbcb46d in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () from /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#6  0x00007f8accbce353 in ThreadWeaver::Thread::run() () from /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#7  0x00007f8ad77de7be in QThreadPrivate::start (arg=0x7f8a50002190) at thread/qthread_unix.cpp:331
#8  0x00007f8ad0d356ba in start_thread (arg=0x7f8a6b7fd700) at pthread_create.c:333
#9  0x00007f8ad70ea41d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 19 (Thread 0x7f8a74d73700 (LWP 23830)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007f8ad77dfa5b in QWaitConditionPrivate::wait (time=18446744073709551615, this=0x1c9b930) at thread/qwaitcondition_unix.cpp:136
#2  QWaitCondition::wait (this=<optimized out>, mutex=0x178fff0, time=18446744073709551615) at thread/qwaitcondition_unix.cpp:208
#3  0x00007f8accbcc2bf in ThreadWeaver::Weaver::takeFirstAvailableJobOrSuspendOrWait(ThreadWeaver::Thread*, bool, bool, bool) () from /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#4  0x00007f8accbd04e8 in ?? () from /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#5  0x00007f8accbcb46d in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () from /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#6  0x00007f8accbce353 in ThreadWeaver::Thread::run() () from /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#7  0x00007f8ad77de7be in QThreadPrivate::start (arg=0x7f8a48001d90) at thread/qthread_unix.cpp:331
#8  0x00007f8ad0d356ba in start_thread (arg=0x7f8a74d73700) at pthread_create.c:333
#9  0x00007f8ad70ea41d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 18 (Thread 0x7f8a75574700 (LWP 23829)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007f8ad77dfa5b in QWaitConditionPrivate::wait (time=18446744073709551615, this=0x1c9b930) at thread/qwaitcondition_unix.cpp:136
#2  QWaitCondition::wait (this=<optimized out>, mutex=0x178fff0, time=18446744073709551615) at thread/qwaitcondition_unix.cpp:208
#3  0x00007f8accbcc2bf in ThreadWeaver::Weaver::takeFirstAvailableJobOrSuspendOrWait(ThreadWeaver::Thread*, bool, bool, bool) () from /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#4  0x00007f8accbd04e8 in ?? () from /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#5  0x00007f8accbcb46d in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () from /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#6  0x00007f8accbce353 in ThreadWeaver::Thread::run() () from /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#7  0x00007f8ad77de7be in QThreadPrivate::start (arg=0x7f8a80004ae0) at thread/qthread_unix.cpp:331
#8  0x00007f8ad0d356ba in start_thread (arg=0x7f8a75574700) at pthread_create.c:333
#9  0x00007f8ad70ea41d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 17 (Thread 0x7f8a78caa700 (LWP 23828)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007f8ad77dfa5b in QWaitConditionPrivate::wait (time=18446744073709551615, this=0x1c9b930) at thread/qwaitcondition_unix.cpp:136
#2  QWaitCondition::wait (this=<optimized out>, mutex=0x178fff0, time=18446744073709551615) at thread/qwaitcondition_unix.cpp:208
#3  0x00007f8accbcc2bf in ThreadWeaver::Weaver::takeFirstAvailableJobOrSuspendOrWait(ThreadWeaver::Thread*, bool, bool, bool) () from /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#4  0x00007f8accbd04e8 in ?? () from /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#5  0x00007f8accbcb46d in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () from /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#6  0x00007f8accbce353 in ThreadWeaver::Thread::run() () from /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#7  0x00007f8ad77de7be in QThreadPrivate::start (arg=0x7f8a7001fa00) at thread/qthread_unix.cpp:331
#8  0x00007f8ad0d356ba in start_thread (arg=0x7f8a78caa700) at pthread_create.c:333
#9  0x00007f8ad70ea41d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 16 (Thread 0x7f8a794ab700 (LWP 23827)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007f8ad77dfa5b in QWaitConditionPrivate::wait (time=18446744073709551615, this=0x1c9b930) at thread/qwaitcondition_unix.cpp:136
#2  QWaitCondition::wait (this=<optimized out>, mutex=0x178fff0, time=18446744073709551615) at thread/qwaitcondition_unix.cpp:208
#3  0x00007f8accbcc2bf in ThreadWeaver::Weaver::takeFirstAvailableJobOrSuspendOrWait(ThreadWeaver::Thread*, bool, bool, bool) () from /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#4  0x00007f8accbd04e8 in ?? () from /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#5  0x00007f8accbcb46d in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () from /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#6  0x00007f8accbce353 in ThreadWeaver::Thread::run() () from /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#7  0x00007f8ad77de7be in QThreadPrivate::start (arg=0x7f8a600010c0) at thread/qthread_unix.cpp:331
#8  0x00007f8ad0d356ba in start_thread (arg=0x7f8a794ab700) at pthread_create.c:333
#9  0x00007f8ad70ea41d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 15 (Thread 0x7f8a79cac700 (LWP 23826)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007f8ad77dfa5b in QWaitConditionPrivate::wait (time=18446744073709551615, this=0x1c9b930) at thread/qwaitcondition_unix.cpp:136
#2  QWaitCondition::wait (this=<optimized out>, mutex=0x178fff0, time=18446744073709551615) at thread/qwaitcondition_unix.cpp:208
#3  0x00007f8accbcc2bf in ThreadWeaver::Weaver::takeFirstAvailableJobOrSuspendOrWait(ThreadWeaver::Thread*, bool, bool, bool) () from /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#4  0x00007f8accbd04e8 in ?? () from /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#5  0x00007f8accbcb46d in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () from /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#6  0x00007f8accbce353 in ThreadWeaver::Thread::run() () from /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#7  0x00007f8ad77de7be in QThreadPrivate::start (arg=0x7f8a540010c0) at thread/qthread_unix.cpp:331
#8  0x00007f8ad0d356ba in start_thread (arg=0x7f8a79cac700) at pthread_create.c:333
#9  0x00007f8ad70ea41d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 14 (Thread 0x7f8a7a4ad700 (LWP 23825)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007f8ad77dfa5b in QWaitConditionPrivate::wait (time=18446744073709551615, this=0x1c9b930) at thread/qwaitcondition_unix.cpp:136
#2  QWaitCondition::wait (this=<optimized out>, mutex=0x178fff0, time=18446744073709551615) at thread/qwaitcondition_unix.cpp:208
#3  0x00007f8accbcc2bf in ThreadWeaver::Weaver::takeFirstAvailableJobOrSuspendOrWait(ThreadWeaver::Thread*, bool, bool, bool) () from /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#4  0x00007f8accbd04e8 in ?? () from /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#5  0x00007f8accbcb46d in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () from /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#6  0x00007f8accbce353 in ThreadWeaver::Thread::run() () from /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#7  0x00007f8ad77de7be in QThreadPrivate::start (arg=0x7f8a58001c70) at thread/qthread_unix.cpp:331
#8  0x00007f8ad0d356ba in start_thread (arg=0x7f8a7a4ad700) at pthread_create.c:333
#9  0x00007f8ad70ea41d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 13 (Thread 0x7f8a75d75700 (LWP 23824)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007f8ad77dfa5b in QWaitConditionPrivate::wait (time=18446744073709551615, this=0x1c9b930) at thread/qwaitcondition_unix.cpp:136
#2  QWaitCondition::wait (this=<optimized out>, mutex=0x178fff0, time=18446744073709551615) at thread/qwaitcondition_unix.cpp:208
#3  0x00007f8accbcc2bf in ThreadWeaver::Weaver::takeFirstAvailableJobOrSuspendOrWait(ThreadWeaver::Thread*, bool, bool, bool) () from /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#4  0x00007f8accbd04e8 in ?? () from /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#5  0x00007f8accbcb46d in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () from /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#6  0x00007f8accbce353 in ThreadWeaver::Thread::run() () from /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#7  0x00007f8ad77de7be in QThreadPrivate::start (arg=0x7f8a5c035820) at thread/qthread_unix.cpp:331
#8  0x00007f8ad0d356ba in start_thread (arg=0x7f8a75d75700) at pthread_create.c:333
#9  0x00007f8ad70ea41d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 12 (Thread 0x7f8a76783700 (LWP 23823)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007f8ad77dfa5b in QWaitConditionPrivate::wait (time=18446744073709551615, this=0x1c9b930) at thread/qwaitcondition_unix.cpp:136
#2  QWaitCondition::wait (this=<optimized out>, mutex=0x178fff0, time=18446744073709551615) at thread/qwaitcondition_unix.cpp:208
#3  0x00007f8accbcc2bf in ThreadWeaver::Weaver::takeFirstAvailableJobOrSuspendOrWait(ThreadWeaver::Thread*, bool, bool, bool) () from /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#4  0x00007f8accbd04e8 in ?? () from /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#5  0x00007f8accbcb46d in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () from /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#6  0x00007f8accbce353 in ThreadWeaver::Thread::run() () from /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#7  0x00007f8ad77de7be in QThreadPrivate::start (arg=0x7f8a640041a0) at thread/qthread_unix.cpp:331
#8  0x00007f8ad0d356ba in start_thread (arg=0x7f8a76783700) at pthread_create.c:333
#9  0x00007f8ad70ea41d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 11 (Thread 0x7f8a76f84700 (LWP 23822)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007f8ad77dfa5b in QWaitConditionPrivate::wait (time=18446744073709551615, this=0x1c9b930) at thread/qwaitcondition_unix.cpp:136
#2  QWaitCondition::wait (this=<optimized out>, mutex=0x178fff0, time=18446744073709551615) at thread/qwaitcondition_unix.cpp:208
#3  0x00007f8accbcc2bf in ThreadWeaver::Weaver::takeFirstAvailableJobOrSuspendOrWait(ThreadWeaver::Thread*, bool, bool, bool) () from /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#4  0x00007f8accbd04e8 in ?? () from /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#5  0x00007f8accbcb46d in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () from /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#6  0x00007f8accbce353 in ThreadWeaver::Thread::run() () from /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#7  0x00007f8ad77de7be in QThreadPrivate::start (arg=0x7f8a70114bf0) at thread/qthread_unix.cpp:331
#8  0x00007f8ad0d356ba in start_thread (arg=0x7f8a76f84700) at pthread_create.c:333
#9  0x00007f8ad70ea41d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 10 (Thread 0x7f8a77ffd700 (LWP 23821)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007f8ad77dfa5b in QWaitConditionPrivate::wait (time=18446744073709551615, this=0x1c9b930) at thread/qwaitcondition_unix.cpp:136
#2  QWaitCondition::wait (this=<optimized out>, mutex=0x178fff0, time=18446744073709551615) at thread/qwaitcondition_unix.cpp:208
#3  0x00007f8accbcc2bf in ThreadWeaver::Weaver::takeFirstAvailableJobOrSuspendOrWait(ThreadWeaver::Thread*, bool, bool, bool) () from /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#4  0x00007f8accbd04e8 in ?? () from /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#5  0x00007f8accbcb46d in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () from /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#6  0x00007f8accbce353 in ThreadWeaver::Thread::run() () from /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#7  0x00007f8ad77de7be in QThreadPrivate::start (arg=0x1b668d0) at thread/qthread_unix.cpp:331
#8  0x00007f8ad0d356ba in start_thread (arg=0x7f8a77ffd700) at pthread_create.c:333
#9  0x00007f8ad70ea41d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 9 (Thread 0x7f8aa37fe700 (LWP 23744)):
#0  0x00007f8ad01eba94 in g_mutex_unlock () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#1  0x00007f8ad01a723d in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f8ad01a749c in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f8ad7a157eb in QEventDispatcherGlib::processEvents (this=0x7f8a90002fe0, flags=...) at kernel/qeventdispatcher_glib.cpp:420
#4  0x00007f8ad79bcb4a in QEventLoop::exec (this=this@entry=0x7f8aa37fdce0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#5  0x00007f8ad77d9834 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:503
#6  0x00007f8a8b2c4035 in ?? () from /usr/lib/x86_64-linux-gnu/qt5/qml/QtQuick/XmlListModel/libqmlxmllistmodelplugin.so
#7  0x00007f8ad77de7be in QThreadPrivate::start (arg=0x176a120) at thread/qthread_unix.cpp:331
#8  0x00007f8ad0d356ba in start_thread (arg=0x7f8aa37fe700) at pthread_create.c:333
#9  0x00007f8ad70ea41d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 8 (Thread 0x7f8aa2ffd700 (LWP 23591)):
#0  0x00007f8ad70da27d in read () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007f8ad01ea6f0 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f8ad01a6e74 in g_main_context_check () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f8ad01a7330 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007f8ad01a749c in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007f8ad7a157eb in QEventDispatcherGlib::processEvents (this=0x7f8a940008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:420
#6  0x00007f8ad79bcb4a in QEventLoop::exec (this=this@entry=0x7f8aa2ffcce0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#7  0x00007f8ad77d9834 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:503
#8  0x00007f8acd5633c5 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#9  0x00007f8ad77de7be in QThreadPrivate::start (arg=0xf65840) at thread/qthread_unix.cpp:331
#10 0x00007f8ad0d356ba in start_thread (arg=0x7f8aa2ffd700) at pthread_create.c:333
#11 0x00007f8ad70ea41d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 7 (Thread 0x7f8aa3fff700 (LWP 23582)):
#0  0x00007f8ad77d693a in QBasicAtomicOps<8>::testAndSetRelaxed<QMutexData*> (currentValue=<synthetic pointer>, newValue=0x1, expectedValue=0x0, _q_value=@0xeb7038: 0x1) at ../../include/QtCore/../../src/corelib/arch/qatomic_x86.h:259
#1  QGenericAtomicOps<QBasicAtomicOps<8> >::testAndSetAcquire<QMutexData*, QMutexData*> (currentValue=<synthetic pointer>, newValue=<optimized out>, expectedValue=0x0, _q_value=@0xeb7038: 0x1) at ../../include/QtCore/../../src/corelib/thread/qgenericatomic.h:166
#2  QBasicAtomicPointer<QMutexData>::testAndSetAcquire (currentValue=<synthetic pointer>, newValue=<optimized out>, expectedValue=0x0, this=0xeb7038, this@entry=0x1) at ../../include/QtCore/../../src/corelib/thread/qbasicatomic.h:276
#3  QBasicMutex::fastTryLock (current=<synthetic pointer>, this=0xeb7038, this@entry=0x1) at thread/qmutex.h:82
#4  QMutex::lock (this=this@entry=0xeb7038) at thread/qmutex.cpp:212
#5  0x00007f8ad7a14d6f in QMutexLocker::QMutexLocker (m=0xeb7038, this=<synthetic pointer>) at ../../include/QtCore/../../src/corelib/thread/qmutex.h:128
#6  QThreadData::canWaitLocked (this=0xeb7010) at ../../include/QtCore/5.5.1/QtCore/private/../../../../../src/corelib/thread/qthread_p.h:240
#7  postEventSourcePrepare (s=0x7f8a980012d0, timeout=0x7f8aa3ffeb44) at kernel/qeventdispatcher_glib.cpp:254
#8  0x00007f8ad01a691d in g_main_context_prepare () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#9  0x00007f8ad01a72bb in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#10 0x00007f8ad01a749c in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#11 0x00007f8ad7a157eb in QEventDispatcherGlib::processEvents (this=0x7f8a980008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:420
#12 0x00007f8ad79bcb4a in QEventLoop::exec (this=this@entry=0x7f8aa3ffed00, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#13 0x00007f8ad77d9834 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:503
#14 0x00007f8ad77de7be in QThreadPrivate::start (arg=0xeb6f40) at thread/qthread_unix.cpp:331
#15 0x00007f8ad0d356ba in start_thread (arg=0x7f8aa3fff700) at pthread_create.c:333
#16 0x00007f8ad70ea41d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 6 (Thread 0x7f8aab12f700 (LWP 23580)):
#0  0x00007f8ad70de74d in poll () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007f8ad01a738c in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f8ad01a749c in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f8ad7a157eb in QEventDispatcherGlib::processEvents (this=0x7f8a9c0008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:420
#4  0x00007f8ad79bcb4a in QEventLoop::exec (this=this@entry=0x7f8aab12ed00, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#5  0x00007f8ad77d9834 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:503
#6  0x00007f8ad77de7be in QThreadPrivate::start (arg=0x7f8aca2dc6b8) at thread/qthread_unix.cpp:331
#7  0x00007f8ad0d356ba in start_thread (arg=0x7f8aab12f700) at pthread_create.c:333
#8  0x00007f8ad70ea41d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 5 (Thread 0x7f8aabb64700 (LWP 23579)):
#0  0x00007f8ad01a43ec in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#1  0x00007f8ad01a6988 in g_main_context_prepare () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f8ad01a72bb in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f8ad01a749c in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007f8ad7a157eb in QEventDispatcherGlib::processEvents (this=0x7f8aa40008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:420
#5  0x00007f8ad79bcb4a in QEventLoop::exec (this=this@entry=0x7f8aabb63c90, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#6  0x00007f8ad77d9834 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:503
#7  0x00007f8ad51eec09 in ?? () from /usr/lib/x86_64-linux-gnu/libKDevPlatformLanguage.so.52
#8  0x00007f8ad77de7be in QThreadPrivate::start (arg=0xd53a40) at thread/qthread_unix.cpp:331
#9  0x00007f8ad0d356ba in start_thread (arg=0x7f8aabb64700) at pthread_create.c:333
#10 0x00007f8ad70ea41d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 4 (Thread 0x7f8aac763700 (LWP 23578)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007f8ab27aafab in ?? () from /usr/lib/x86_64-linux-gnu/dri/r600_dri.so
#2  0x00007f8ab27aacb8 in ?? () from /usr/lib/x86_64-linux-gnu/dri/r600_dri.so
#3  0x00007f8ad0d356ba in start_thread (arg=0x7f8aac763700) at pthread_create.c:333
#4  0x00007f8ad70ea41d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 3 (Thread 0x7f8aad6cc700 (LWP 23577)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007f8ab27aafab in ?? () from /usr/lib/x86_64-linux-gnu/dri/r600_dri.so
#2  0x00007f8ab27aacb8 in ?? () from /usr/lib/x86_64-linux-gnu/dri/r600_dri.so
#3  0x00007f8ad0d356ba in start_thread (arg=0x7f8aad6cc700) at pthread_create.c:333
#4  0x00007f8ad70ea41d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 2 (Thread 0x7f8abcac0700 (LWP 23576)):
#0  0x00007f8ad70de74d in poll () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007f8ac8f927c2 in ?? () from /usr/lib/x86_64-linux-gnu/libxcb.so.1
#2  0x00007f8ac8f943e7 in xcb_wait_for_event () from /usr/lib/x86_64-linux-gnu/libxcb.so.1
#3  0x00007f8abee19889 in QXcbEventReader::run (this=0x8571c0) at qxcbconnection.cpp:1271
#4  0x00007f8ad77de7be in QThreadPrivate::start (arg=0x8571c0) at thread/qthread_unix.cpp:331
#5  0x00007f8ad0d356ba in start_thread (arg=0x7f8abcac0700) at pthread_create.c:333
#6  0x00007f8ad70ea41d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 1 (Thread 0x7f8abf1eb8c0 (LWP 23575)):
[KCrash Handler]
#6  0x00007f8aae59d30f in llvm::cl::AddLiteralOption(llvm::cl::Option&, llvm::StringRef) () from /usr/lib/x86_64-linux-gnu/libLLVM-7.so.1
#7  0x00007f8aae91b595 in ?? () from /usr/lib/x86_64-linux-gnu/libLLVM-7.so.1
#8  0x00007f8a35afcb0a in llvm::MachineSchedRegistry::MachineSchedRegistry (C=0x7f8a35e70df0 <useDefaultMachineSched(llvm::MachineSchedContext*)>, D=0x7f8a3711e090 "Use the target's default scheduler choice.", N=0x7f8a3716fc5f "default", this=0x7f8a37fda4e0 <DefaultSchedRegistry>) at /build/llvm-toolchain-3.8-_PD09B/llvm-toolchain-3.8-3.8/include/llvm/CodeGen/MachineScheduler.h:128
#9  __static_initialization_and_destruction_0 (__initialize_p=1, __priority=65535) at /build/llvm-toolchain-3.8-_PD09B/llvm-toolchain-3.8-3.8/lib/CodeGen/MachineScheduler.cpp:214
#10 _GLOBAL__sub_I_MachineScheduler.cpp(void) () at /build/llvm-toolchain-3.8-_PD09B/llvm-toolchain-3.8-3.8/lib/CodeGen/MachineScheduler.cpp:3413
#11 0x00007f8ad99706ba in call_init (l=<optimized out>, argc=argc@entry=1, argv=argv@entry=0x7ffc936ffb48, env=env@entry=0x1fb77b0) at dl-init.c:72
#12 0x00007f8ad99707cb in call_init (env=0x1fb77b0, argv=0x7ffc936ffb48, argc=1, l=<optimized out>) at dl-init.c:30
#13 _dl_init (main_map=main_map@entry=0x1bf2f40, argc=1, argv=0x7ffc936ffb48, env=0x1fb77b0) at dl-init.c:120
#14 0x00007f8ad99758e2 in dl_open_worker (a=a@entry=0x7ffc936fe410) at dl-open.c:575
#15 0x00007f8ad9970564 in _dl_catch_error (objname=objname@entry=0x7ffc936fe400, errstring=errstring@entry=0x7ffc936fe408, mallocedp=mallocedp@entry=0x7ffc936fe3ff, operate=operate@entry=0x7f8ad99754d0 <dl_open_worker>, args=args@entry=0x7ffc936fe410) at dl-error.c:187
#16 0x00007f8ad9974da9 in _dl_open (file=0x1c91678 "/usr/lib/x86_64-linux-gnu/qt5/plugins/kdevplatform/30/kdevclangsupport.so", mode=-2147483647, caller_dlopen=0x7f8ad79ba8ff <QLibraryPrivate::load_sys()+1631>, nsid=-2, argc=<optimized out>, argv=<optimized out>, env=0x1fb77b0) at dl-open.c:660
#17 0x00007f8acebeef09 in dlopen_doit (a=a@entry=0x7ffc936fe640) at dlopen.c:66
#18 0x00007f8ad9970564 in _dl_catch_error (objname=0x83b250, errstring=0x83b258, mallocedp=0x83b248, operate=0x7f8acebeeeb0 <dlopen_doit>, args=0x7ffc936fe640) at dl-error.c:187
#19 0x00007f8acebef571 in _dlerror_run (operate=operate@entry=0x7f8acebeeeb0 <dlopen_doit>, args=args@entry=0x7ffc936fe640) at dlerror.c:163
#20 0x00007f8acebeefa1 in __dlopen (file=<optimized out>, mode=mode@entry=1) at dlopen.c:87
#21 0x00007f8ad79ba8ff in QLibraryPrivate::load_sys (this=0x1c63760) at plugin/qlibrary_unix.cpp:227
#22 0x00007f8ad79b3bfd in QLibraryPrivate::load (this=0x1c63760) at plugin/qlibrary.cpp:534
#23 QLibraryPrivate::loadPlugin (this=0x1c63760) at plugin/qlibrary.cpp:582
#24 0x00007f8ad79a8956 in QPluginLoader::load (this=<optimized out>) at plugin/qpluginloader.cpp:232
#25 0x00007f8ad88261fa in KPluginLoader::load (this=0x7ffc936feab0) at /build/kcoreaddons-VQ21cI/kcoreaddons-5.18.0/src/lib/plugin/kpluginloader.cpp:184
#26 0x00007f8ad882632a in KPluginLoader::instance (this=<optimized out>) at /build/kcoreaddons-VQ21cI/kcoreaddons-5.18.0/src/lib/plugin/kpluginloader.cpp:166
#27 0x00007f8ad8826377 in KPluginLoader::factory (this=<optimized out>) at /build/kcoreaddons-VQ21cI/kcoreaddons-5.18.0/src/lib/plugin/kpluginloader.cpp:111
#28 0x00007f8ad963146c in KDevelop::PluginController::loadPluginInternal(QString const&) () from /usr/lib/x86_64-linux-gnu/libKDevPlatformShell.so.52
#29 0x00007f8ad9634158 in KDevelop::PluginController::allPluginsForExtension(QString const&, QMap<QString, QVariant> const&) () from /usr/lib/x86_64-linux-gnu/libKDevPlatformShell.so.52
#30 0x00007f8ad9671861 in KDevelop::LanguageController::languagesForMimetype(QString const&) () from /usr/lib/x86_64-linux-gnu/libKDevPlatformShell.so.52
#31 0x00007f8ad96722aa in KDevelop::LanguageController::languagesForUrl(QUrl const&) () from /usr/lib/x86_64-linux-gnu/libKDevPlatformShell.so.52
#32 0x00007f8ad51c1733 in ?? () from /usr/lib/x86_64-linux-gnu/libKDevPlatformLanguage.so.52
#33 0x00007f8ad51c34a8 in ?? () from /usr/lib/x86_64-linux-gnu/libKDevPlatformLanguage.so.52
#34 0x00007f8ad51bf1d4 in KDevelop::BackgroundParser::parseDocuments() () from /usr/lib/x86_64-linux-gnu/libKDevPlatformLanguage.so.52
#35 0x00007f8ad5356a35 in ?? () from /usr/lib/x86_64-linux-gnu/libKDevPlatformLanguage.so.52
#36 0x00007f8ad79eec01 in QObject::event (this=0xaf59b0, e=<optimized out>) at kernel/qobject.cpp:1239
#37 0x00007f8ad82b205c in QApplicationPrivate::notify_helper (this=this@entry=0x836dc0, receiver=receiver@entry=0xaf59b0, e=e@entry=0x1c5d130) at kernel/qapplication.cpp:3716
#38 0x00007f8ad82b7516 in QApplication::notify (this=0x7ffc936ff8f0, receiver=0xaf59b0, e=0x1c5d130) at kernel/qapplication.cpp:3499
#39 0x00007f8ad79bf38b in QCoreApplication::notifyInternal (this=0x7ffc936ff8f0, receiver=0xaf59b0, event=event@entry=0x1c5d130) at kernel/qcoreapplication.cpp:965
#40 0x00007f8ad79c1786 in QCoreApplication::sendEvent (event=0x1c5d130, receiver=<optimized out>) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:224
#41 QCoreApplicationPrivate::sendPostedEvents (receiver=receiver@entry=0x0, event_type=event_type@entry=0, data=0x832890) at kernel/qcoreapplication.cpp:1593
#42 0x00007f8ad79c1c68 in QCoreApplication::sendPostedEvents (receiver=receiver@entry=0x0, event_type=event_type@entry=0) at kernel/qcoreapplication.cpp:1451
#43 0x00007f8ad7a153c3 in postEventSourceDispatch (s=0x897670) at kernel/qeventdispatcher_glib.cpp:271
#44 0x00007f8ad01a7197 in g_main_context_dispatch () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#45 0x00007f8ad01a73f0 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#46 0x00007f8ad01a749c in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#47 0x00007f8ad7a157cf in QEventDispatcherGlib::processEvents (this=0x881fd0, flags=...) at kernel/qeventdispatcher_glib.cpp:418
#48 0x00007f8ad79bcb4a in QEventLoop::exec (this=this@entry=0x7ffc936ff6e0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#49 0x00007f8ad79c4bec in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1229
#50 0x000000000040c52a in ?? ()
#51 0x00007f8ad7003830 in __libc_start_main (main=0x4060e0, argc=1, argv=0x7ffc936ffb48, init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>, stack_end=0x7ffc936ffb38) at ../csu/libc-start.c:291
#52 0x000000000040c859 in _start ()

Reported using DrKonqi