Backtrace:

Thread 15 (Thread 0x7f262d08b700 (LWP 22780)):
#0  0x00007f26481f9e8d in poll () at ../sysdeps/unix/syscall-template.S:84
#1  0x0000000000438a4e in poll () at /usr/bin/../lib/gcc/x86_64-linux-gnu/5.3.1/../../../../include/c++/5.3.1/iostream:74
#2  0x00007f263b5b9c62 in ?? () from /usr/lib/x86_64-linux-gnu/libxcb.so.1
#3  0x00007f263b5bb8d7 in xcb_wait_for_event () from /usr/lib/x86_64-linux-gnu/libxcb.so.1
#4  0x00007f2631e50629 in QXcbEventReader::run (this=0x61600000f080) at qxcbconnection.cpp:1253
#5  0x00007f264943784e in QThreadPrivate::start (arg=0x61600000f080) at thread/qthread_unix.cpp:331
#6  0x00007f2648af16fa in start_thread (arg=0x7f262d08b700) at pthread_create.c:333
#7  0x00007f2648205b5d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 13 (Thread 0x7f260ef67700 (LWP 22797)):
#0  0x00007f26481f9e8d in poll () at ../sysdeps/unix/syscall-template.S:84
#1  0x0000000000438a4e in poll () at /usr/bin/../lib/gcc/x86_64-linux-gnu/5.3.1/../../../../include/c++/5.3.1/iostream:74
#2  0x00007f263d2b231c in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f263d2b242c in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007f264966ea7f in QEventDispatcherGlib::processEvents (this=0x60200025aff0, flags=...) at kernel/qeventdispatcher_glib.cpp:418
#5  0x00007f2649615dea in QEventLoop::exec (this=this@entry=0x7f260ef66c80, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#6  0x00007f26494328a4 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:503
#7  0x00007f264943784e in QThreadPrivate::start (arg=0x7f264e2095e8 <KDevelop::(anonymous namespace)::Q_QGS_s_parsingThread::innerFunction()::holder+8>) at thread/qthread_unix.cpp:331
#8  0x00007f2648af16fa in start_thread (arg=0x7f260ef67700) at pthread_create.c:333
#9  0x00007f2648205b5d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 14 (Thread 0x7f2614023700 (LWP 22792)):
#0  0x00007f2648afac5d in nanosleep () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007f26494e7c8d in qt_nanosleep (amount=...) at tools/qelapsedtimer_unix.cpp:185
#2  0x00007f2649436c84 in QThread::usleep (usecs=<optimized out>) at thread/qthread_unix.cpp:475
#3  0x00007f2644afed91 in KDevelop::DUChainLock::lockForWrite (this=0x7f26467d6be0 <KDevelop::(anonymous namespace)::Q_QGS_sdDUChainPrivate::innerFunction()::holder+32>, timeout=0) at /home/kfunk/devel/src/kf5/kdevplatform-stable/languag
e/duchain/duchainlock.cpp:155
#4  0x00007f2644b007da in KDevelop::DUChainWriteLocker::lock (this=0x7f2614021620) at /home/kfunk/devel/src/kf5/kdevplatform-stable/language/duchain/duchainlock.cpp:249
#5  0x00007f2644b0047f in KDevelop::DUChainWriteLocker::DUChainWriteLocker (this=0x7f2614021620, duChainLock=0x7f26467d6be0 <KDevelop::(anonymous namespace)::Q_QGS_sdDUChainPrivate::innerFunction()::holder+32>, timeout=0) at /home/kfunk/
devel/src/kf5/kdevplatform-stable/language/duchain/duchainlock.cpp:233
#6  0x00007f26446962d6 in KDevelop::DUChainPrivate::doMoreCleanup (this=0x7f26467d6bc0 <KDevelop::(anonymous namespace)::Q_QGS_sdDUChainPrivate::innerFunction()::holder>, retries=1, lockFlag=KDevelop::DUChainPrivate::TryLock) at /home/kf
unk/devel/src/kf5/kdevplatform-stable/language/duchain/duchain.cpp:709
#7  0x00007f2644731ca5 in KDevelop::DUChainPrivate::CleanupThread::run (this=0x604000b9a910) at /home/kfunk/devel/src/kf5/kdevplatform-stable/language/duchain/duchain.cpp:290
#8  0x00007f264943784e in QThreadPrivate::start (arg=0x604000b9a910) at thread/qthread_unix.cpp:331
#9  0x00007f2648af16fa in start_thread (arg=0x7f2614023700) at pthread_create.c:333
#10 0x00007f2648205b5d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 12 (Thread 0x7f260cd33700 (LWP 22802)):
#0  0x00007f26481f9e8d in poll () at ../sysdeps/unix/syscall-template.S:84
#1  0x0000000000438a4e in poll () at /usr/bin/../lib/gcc/x86_64-linux-gnu/5.3.1/../../../../include/c++/5.3.1/iostream:74
#2  0x00007f263d2b231c in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f263d2b242c in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007f264966ea7f in QEventDispatcherGlib::processEvents (this=0x602000267ff0, flags=...) at kernel/qeventdispatcher_glib.cpp:418
#5  0x00007f2649615dea in QEventLoop::exec (this=this@entry=0x7f260cd32950, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#6  0x00007f26494328a4 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:503
#7  0x00007f2645182bf8 in KDevelop::CompletionWorkerThread::run (this=0x603000928fc0) at /home/kfunk/devel/src/kf5/kdevplatform-stable/language/codecompletion/codecompletionmodel.cpp:89
#8  0x00007f264943784e in QThreadPrivate::start (arg=0x603000928fc0) at thread/qthread_unix.cpp:331
#9  0x00007f2648af16fa in start_thread (arg=0x7f260cd33700) at pthread_create.c:333
#10 0x00007f2648205b5d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 11 (Thread 0x7f2615dff700 (LWP 22807)):
#0  syscall () at ../sysdeps/unix/sysv/linux/x86_64/syscall.S:38
#1  0x00007f264942f928 in _q_futex (op=0, val=3, timeout=0x0, addr=0x6030004f9a38) at thread/qmutex_linux.cpp:146
#2  lockInternal_helper<false> (timeout=-1, elapsedTimer=0x0, d_ptr=...) at thread/qmutex_linux.cpp:187
#3  QBasicMutex::lockInternal (this=0x6030004f9a38) at thread/qmutex_linux.cpp:203
#4  0x00007f264942fa1d in QBasicMutex::lock (this=0x6030004f9a38) at thread/qmutex.h:59
#5  QRecursiveMutexPrivate::lock (timeout=-1, this=0x6030004f9a20) at thread/qmutex.cpp:641
#6  QMutex::lock (this=<optimized out>) at thread/qmutex.cpp:215
#7  0x00007f2644465bfd in QMutexLocker::QMutexLocker (this=0x7f2615dfd060, m=0x6110009632e8) at /usr/include/x86_64-linux-gnu/qt5/QtCore/qmutex.h:128
#8  0x00007f26445070f6 in KDevelop::BackgroundParser::trackerForUrl (this=0x6030004f9e10, url=...) at /home/kfunk/devel/src/kf5/kdevplatform-stable/language/backgroundparser/backgroundparser.cpp:751
#9  0x00007f2644671506 in KDevelop::DUChain::addDocumentChain (this=0x602000247810, chain=0x604002e12710) at /home/kfunk/devel/src/kf5/kdevplatform-stable/language/duchain/duchain.cpp:1253
#10 0x00007f261ace646d in (anonymous namespace)::createTopContext (path=..., environment=...) at /home/kfunk/devel/src/kf5/kdevelop-stable/languages/clang/duchain/clanghelpers.cpp:77
#11 ClangHelpers::buildDUChain(void*, QMultiHash<void*, Import> const&, ParseSession const&, KDevelop::TopDUContext::Features, QHash<void*, KDevelop::ReferencedTopDUContext>&, ClangIndex*, std::function<bool ()> const&) (file=<optimized
out>, imports=..., session=..., features=KDevelop::TopDUContext::Features::AllDeclarationsContextsAndUses, includedFiles={...}, index=<optimized out>, abortFunction=...) at /home/kfunk/devel/src/kf5/kdevelop-stable/languages/clang/duchai
n/clanghelpers.cpp:131
#12 0x00007f261ace607a in ClangHelpers::buildDUChain(void*, QMultiHash<void*, Import> const&, ParseSession const&, KDevelop::TopDUContext::Features, QHash<void*, KDevelop::ReferencedTopDUContext>&, ClangIndex*, std::function<bool ()> con
st&) (file=<optimized out>, imports=..., session=..., features=KDevelop::TopDUContext::Features::AllDeclarationsContextsAndUses, includedFiles={...}, index=<optimized out>, abortFunction=...) at /home/kfunk/devel/src/kf5/kdevelop-stable/
languages/clang/duchain/clanghelpers.cpp:113
#13 0x00007f261b02ce4f in ClangParseJob::run (this=<optimized out>) at /home/kfunk/devel/src/kf5/kdevelop-stable/languages/clang/clangparsejob.cpp:316
#14 0x00007f261b02f8cd in non-virtual thunk to ClangParseJob::run(QSharedPointer<ThreadWeaver::JobInterface>, ThreadWeaver::Thread*) () at /home/kfunk/devel/src/kf5/kdevelop-stable/languages/clang/clangparsejob.cpp:215
#15 0x00007f2642df1630 in ThreadWeaver::IdDecorator::run(QSharedPointer<ThreadWeaver::JobInterface>, ThreadWeaver::Thread*) () from /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#16 0x00007f2642df1c70 in ThreadWeaver::Executor::run(QSharedPointer<ThreadWeaver::JobInterface> const&, ThreadWeaver::Thread*) () from /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#17 0x00007f2642df07c0 in ThreadWeaver::Job::execute(QSharedPointer<ThreadWeaver::JobInterface> const&, ThreadWeaver::Thread*) () from /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#18 0x00007f2642df026a in ThreadWeaver::Thread::run() () from /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#19 0x00007f264943784e in QThreadPrivate::start (arg=0x603000951f40) at thread/qthread_unix.cpp:331
#20 0x00007f2648af16fa in start_thread (arg=0x7f2615dff700) at pthread_create.c:333
#21 0x00007f2648205b5d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 10 (Thread 0x7f26155fe700 (LWP 22808)):
#0  0x00007f2648afa55d in read () at ../sysdeps/unix/syscall-template.S:84
#1  0x000000000044d78d in read () at /usr/bin/../lib/gcc/x86_64-linux-gnu/5.3.1/../../../../include/c++/5.3.1/iostream:74
#2  0x00007f26495b1baf in read (__nbytes=152, __buf=0x7f26155fba10, __fd=<optimized out>) at /usr/include/x86_64-linux-gnu/bits/unistd.h:44
#3  forkfd_wait (ffd=<optimized out>, info=info@entry=0x7f26155fbad0, rusage=rusage@entry=0x0) at io/../../3rdparty/forkfd/forkfd.c:723
#4  0x00007f26495adc6a in QProcessPrivate::waitForDeadChild (this=this@entry=0x615004692980) at io/qprocess_unix.cpp:1096
#5  0x00007f26495487b2 in QProcessPrivate::_q_startupNotification (this=this@entry=0x615004692980) at io/qprocess.cpp:113
#6  0x00007f26495acd90 in QProcessPrivate::waitForStarted (this=0x615004692980, msecs=3000) at io/qprocess_unix.cpp:831
#7  0x00007f2649548465 in QProcess::waitForStarted (this=this@entry=0x7f26155fbea0, msecs=msecs@entry=3000) at io/qprocess.cpp:1777
#8  0x00007f26495485a9 in QProcess::waitForFinished (this=0x7f26155fbea0, msecs=3000) at io/qprocess.cpp:1843
#9  0x00007f260a4a0a64 in QmlJS::Cache::getFileNames (this=<optimized out>, fileInfos=...) at /home/kfunk/devel/src/kf5/kdevelop-stable/languages/qmljs/duchain/cache.cpp:165
#10 0x00007f260a4dd95a in DeclarationBuilder::importDirectory (this=<optimized out>, directory="qml", node=<optimized out>) at /home/kfunk/devel/src/kf5/kdevelop-stable/languages/qmljs/duchain/declarationbuilder.cpp:1027
#11 0x00007f260a4deff2 in DeclarationBuilder::importModule (this=0x7f26155fd5f0, node=<optimized out>) at /home/kfunk/devel/src/kf5/kdevelop-stable/languages/qmljs/duchain/declarationbuilder.cpp:1078
#12 0x00007f260a4df39d in DeclarationBuilder::visit (this=<optimized out>, node=<optimized out>) at /home/kfunk/devel/src/kf5/kdevelop-stable/languages/qmljs/duchain/declarationbuilder.cpp:1084
#13 0x00007f260a4dfb1d in non-virtual thunk to DeclarationBuilder::visit(QmlJS::AST::UiImport*) () at /home/kfunk/devel/src/kf5/kdevelop-stable/languages/qmljs/duchain/declarationbuilder.cpp:1081
#14 0x00007f260a57ea4d in QmlJS::AST::UiImport::accept0 (this=<optimized out>, visitor=0x7f26155fd648) at /home/kfunk/devel/src/kf5/kdevelop-stable/languages/qmljs/libs/qmljs/parser/qmljsast.cpp:917
#15 0x00007f260a56c5bf in QmlJS::AST::Node::accept (this=0x625008273168, visitor=0x7f26155fd648) at /home/kfunk/devel/src/kf5/kdevelop-stable/languages/qmljs/libs/qmljs/parser/qmljsast.cpp:42
#16 0x00007f260a57f328 in QmlJS::AST::Node::accept (node=0x625008273168, visitor=0x7f26155fd648) at /home/kfunk/devel/src/kf5/kdevelop-stable/languages/qmljs/libs/qmljs/parser/qmljsast.cpp:50
#17 QmlJS::AST::UiHeaderItemList::accept0 (this=<optimized out>, visitor=0x7f26155fd648) at /home/kfunk/devel/src/kf5/kdevelop-stable/languages/qmljs/libs/qmljs/parser/qmljsast.cpp:944
#18 0x00007f260a56c5bf in QmlJS::AST::Node::accept (this=0x625008273200, visitor=0x7f26155fd648) at /home/kfunk/devel/src/kf5/kdevelop-stable/languages/qmljs/libs/qmljs/parser/qmljsast.cpp:42
#19 0x00007f260a57c3a8 in QmlJS::AST::Node::accept (visitor=0x7f26155fd648, node=<optimized out>) at /home/kfunk/devel/src/kf5/kdevelop-stable/languages/qmljs/libs/qmljs/parser/qmljsast.cpp:50
#20 QmlJS::AST::UiProgram::accept0 (this=<optimized out>, visitor=0x7f26155fd648) at /home/kfunk/devel/src/kf5/kdevelop-stable/languages/qmljs/libs/qmljs/parser/qmljsast.cpp:813
#21 0x00007f260a56c5bf in QmlJS::AST::Node::accept (this=0x62500821a500, visitor=0x7f26155fd648) at /home/kfunk/devel/src/kf5/kdevelop-stable/languages/qmljs/libs/qmljs/parser/qmljsast.cpp:42
#22 0x00007f260a56c778 in QmlJS::AST::Node::accept (node=0x62500821a500, visitor=0x7f26155fd648) at /home/kfunk/devel/src/kf5/kdevelop-stable/languages/qmljs/libs/qmljs/parser/qmljsast.cpp:50
#23 0x00007f260a4c648f in ContextBuilder::startVisiting (this=<optimized out>, node=0xd4) at /home/kfunk/devel/src/kf5/kdevelop-stable/languages/qmljs/duchain/contextbuilder.cpp:83
#24 0x00007f260a4c9258 in DeclarationBuilder::startVisiting (this=<optimized out>, node=0x62500821a500) at /home/kfunk/devel/src/kf5/kdevelop-stable/languages/qmljs/duchain/declarationbuilder.cpp:110
#25 0x00007f260a473820 in KDevelop::AbstractContextBuilder<QmlJS::AST::Node, QmlJS::AST::IdentifierPropertyName>::supportBuild (this=0x7f26155fd5f0, node=0x62500821a500, context=<optimized out>) at /home/kfunk/devel/install/kf5-stable/in
clude/kdevplatform/language/duchain/builders/abstractcontextbuilder.h:134
#26 0x00007f260a4857bd in KDevelop::AbstractTypeBuilder<QmlJS::AST::Node, QmlJS::AST::IdentifierPropertyName, ContextBuilder>::supportBuild (this=0x7f26155fd5f0, node=0x62500821a500, context=0x6040036ce350) at /home/kfunk/devel/install/k
f5-stable/include/kdevplatform/language/duchain/builders/abstracttypebuilder.h:85
#27 0x00007f260a4730fa in KDevelop::AbstractContextBuilder<QmlJS::AST::Node, QmlJS::AST::IdentifierPropertyName>::build (this=0x7f26155fd5f0, url=..., node=0x62500821a500, updateContext=...) at /home/kfunk/devel/install/kf5-stable/includ
e/kdevplatform/language/duchain/builders/abstractcontextbuilder.h:114
#28 0x00007f260a4c8671 in DeclarationBuilder::build (this=<optimized out>, url=..., node=0x62500821a500, updateContext=...) at /home/kfunk/devel/src/kf5/kdevelop-stable/languages/qmljs/duchain/declarationbuilder.cpp:81
#29 0x00007f260a46b80c in QmlJsParseJob::run (this=<optimized out>, pointer=..., thread=<optimized out>) at /home/kfunk/devel/src/kf5/kdevelop-stable/languages/qmljs/qmljsparsejob.cpp:145
#30 0x00007f260a46d72d in non-virtual thunk to QmlJsParseJob::run(QSharedPointer<ThreadWeaver::JobInterface>, ThreadWeaver::Thread*) () at /home/kfunk/devel/src/kf5/kdevelop-stable/languages/qmljs/qmljsparsejob.cpp:95
#31 0x00007f2642df1630 in ThreadWeaver::IdDecorator::run(QSharedPointer<ThreadWeaver::JobInterface>, ThreadWeaver::Thread*) () from /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#32 0x00007f2642df1c70 in ThreadWeaver::Executor::run(QSharedPointer<ThreadWeaver::JobInterface> const&, ThreadWeaver::Thread*) () from /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#33 0x00007f2642df07c0 in ThreadWeaver::Job::execute(QSharedPointer<ThreadWeaver::JobInterface> const&, ThreadWeaver::Thread*) () from /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#34 0x00007f2642df026a in ThreadWeaver::Thread::run() () from /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#35 0x00007f264943784e in QThreadPrivate::start (arg=0x603000950f80) at thread/qthread_unix.cpp:331
#36 0x00007f2648af16fa in start_thread (arg=0x7f26155fe700) at pthread_create.c:333
#37 0x00007f2648205b5d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 9 (Thread 0x7f260dd58700 (LWP 22809)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007f2649438aeb in QWaitConditionPrivate::wait (time=18446744073709551615, this=0x60800040fa20) at thread/qwaitcondition_unix.cpp:136
#2  QWaitCondition::wait (this=<optimized out>, mutex=0x602000136a90, time=18446744073709551615) at thread/qwaitcondition_unix.cpp:208
#3  0x00007f2642dee29f in ThreadWeaver::Weaver::takeFirstAvailableJobOrSuspendOrWait(ThreadWeaver::Thread*, bool, bool, bool) () from /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#4  0x00007f2642df24c8 in ?? () from /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#5  0x00007f2642ded46d in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () from /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#6  0x00007f2642df0333 in ThreadWeaver::Thread::run() () from /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#7  0x00007f264943784e in QThreadPrivate::start (arg=0x60300096ef80) at thread/qthread_unix.cpp:331
#8  0x00007f2648af16fa in start_thread (arg=0x7f260dd58700) at pthread_create.c:333
#9  0x00007f2648205b5d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 8 (Thread 0x7f260d557700 (LWP 22810)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007f2649438aeb in QWaitConditionPrivate::wait (time=18446744073709551615, this=0x60800040fa20) at thread/qwaitcondition_unix.cpp:136
#2  QWaitCondition::wait (this=<optimized out>, mutex=0x602000136a90, time=18446744073709551615) at thread/qwaitcondition_unix.cpp:208
#3  0x00007f2642dee29f in ThreadWeaver::Weaver::takeFirstAvailableJobOrSuspendOrWait(ThreadWeaver::Thread*, bool, bool, bool) () from /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#4  0x00007f2642df24c8 in ?? () from /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#5  0x00007f2642ded46d in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () from /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#6  0x00007f2642df2522 in ?? () from /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#7  0x00007f2642ded46d in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () from /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#8  0x00007f2642df2522 in ?? () from /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#9  0x00007f2642ded46d in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () from /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#10 0x00007f2642df2522 in ?? () from /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#11 0x00007f2642ded46d in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () from /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#12 0x00007f2642df2522 in ?? () from /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#13 0x00007f2642ded46d in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () from /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#14 0x00007f2642df0333 in ThreadWeaver::Thread::run() () from /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#15 0x00007f264943784e in QThreadPrivate::start (arg=0x60300096bf80) at thread/qthread_unix.cpp:331
#16 0x00007f2648af16fa in start_thread (arg=0x7f260d557700) at pthread_create.c:333
#17 0x00007f2648205b5d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 7 (Thread 0x7f260bcbb700 (LWP 22811)):
#0  0x00007f2648afac5d in nanosleep () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007f26494e7c8d in qt_nanosleep (amount=...) at tools/qelapsedtimer_unix.cpp:185
#2  0x00007f2649436c84 in QThread::usleep (usecs=<optimized out>) at thread/qthread_unix.cpp:475
#3  0x00007f2644afed91 in KDevelop::DUChainLock::lockForWrite (this=0x7f26467d6be0 <KDevelop::(anonymous namespace)::Q_QGS_sdDUChainPrivate::innerFunction()::holder+32>, timeout=0) at /home/kfunk/devel/src/kf5/kdevplatform-stable/languag
e/duchain/duchainlock.cpp:155
#4  0x00007f2644b007da in KDevelop::DUChainWriteLocker::lock (this=0x7f260bcb92d0) at /home/kfunk/devel/src/kf5/kdevplatform-stable/language/duchain/duchainlock.cpp:249
#5  0x00007f2644b0047f in KDevelop::DUChainWriteLocker::DUChainWriteLocker (this=0x7f260bcb92d0, duChainLock=0x0, timeout=0) at /home/kfunk/devel/src/kf5/kdevplatform-stable/language/duchain/duchainlock.cpp:233
#6  0x00007f261ace6281 in ClangHelpers::buildDUChain(void*, QMultiHash<void*, Import> const&, ParseSession const&, KDevelop::TopDUContext::Features, QHash<void*, KDevelop::ReferencedTopDUContext>&, ClangIndex*, std::function<bool ()> con
st&) (file=<optimized out>, imports=..., session=..., features=KDevelop::TopDUContext::Features::AllDeclarationsContextsAndUses, includedFiles={...}, index=<optimized out>, abortFunction=...) at /home/kfunk/devel/src/kf5/kdevelop-stable/
languages/clang/duchain/clanghelpers.cpp:128
#7  0x00007f261ace607a in ClangHelpers::buildDUChain(void*, QMultiHash<void*, Import> const&, ParseSession const&, KDevelop::TopDUContext::Features, QHash<void*, KDevelop::ReferencedTopDUContext>&, ClangIndex*, std::function<bool ()> con
st&) (file=<optimized out>, imports=..., session=..., features=KDevelop::TopDUContext::Features::AllDeclarationsContextsAndUses, includedFiles={...}, index=<optimized out>, abortFunction=...) at /home/kfunk/devel/src/kf5/kdevelop-stable/
languages/clang/duchain/clanghelpers.cpp:113
#8  0x00007f261ace607a in ClangHelpers::buildDUChain(void*, QMultiHash<void*, Import> const&, ParseSession const&, KDevelop::TopDUContext::Features, QHash<void*, KDevelop::ReferencedTopDUContext>&, ClangIndex*, std::function<bool ()> con
st&) (file=<optimized out>, imports=..., session=..., features=KDevelop::TopDUContext::Features::AllDeclarationsContextsAndUses, includedFiles={...}, index=<optimized out>, abortFunction=...) at /home/kfunk/devel/src/kf5/kdevelop-stable/
languages/clang/duchain/clanghelpers.cpp:113
#9  0x00007f261b02ce4f in ClangParseJob::run (this=<optimized out>) at /home/kfunk/devel/src/kf5/kdevelop-stable/languages/clang/clangparsejob.cpp:316
#10 0x00007f261b02f8cd in non-virtual thunk to ClangParseJob::run(QSharedPointer<ThreadWeaver::JobInterface>, ThreadWeaver::Thread*) () at /home/kfunk/devel/src/kf5/kdevelop-stable/languages/clang/clangparsejob.cpp:215
#11 0x00007f2642df1630 in ThreadWeaver::IdDecorator::run(QSharedPointer<ThreadWeaver::JobInterface>, ThreadWeaver::Thread*) () from /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#12 0x00007f2642df1c70 in ThreadWeaver::Executor::run(QSharedPointer<ThreadWeaver::JobInterface> const&, ThreadWeaver::Thread*) () from /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#13 0x00007f2642df07c0 in ThreadWeaver::Job::execute(QSharedPointer<ThreadWeaver::JobInterface> const&, ThreadWeaver::Thread*) () from /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#14 0x00007f2642df026a in ThreadWeaver::Thread::run() () from /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#15 0x00007f264943784e in QThreadPrivate::start (arg=0x60300096a780) at thread/qthread_unix.cpp:331
#16 0x00007f2648af16fa in start_thread (arg=0x7f260bcbb700) at pthread_create.c:333
#17 0x00007f2648205b5d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 6 (Thread 0x7f2609710700 (LWP 22814)):
#0  0x00007f26481f9e8d in poll () at ../sysdeps/unix/syscall-template.S:84
#1  0x0000000000438a4e in poll () at /usr/bin/../lib/gcc/x86_64-linux-gnu/5.3.1/../../../../include/c++/5.3.1/iostream:74
#2  0x00007f263d2b231c in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f263d2b242c in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007f264966ea9b in QEventDispatcherGlib::processEvents (this=0x602000279ff0, flags=...) at kernel/qeventdispatcher_glib.cpp:420
#5  0x00007f2649615dea in QEventLoop::exec (this=this@entry=0x7f260970f950, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#6  0x00007f26494328a4 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:503
#7  0x00007f2645182bf8 in KDevelop::CompletionWorkerThread::run (this=0x60300098a6d0) at /home/kfunk/devel/src/kf5/kdevplatform-stable/language/codecompletion/codecompletionmodel.cpp:89
#8  0x00007f264943784e in QThreadPrivate::start (arg=0x60300098a6d0) at thread/qthread_unix.cpp:331
#9  0x00007f2648af16fa in start_thread (arg=0x7f2609710700) at pthread_create.c:333
#10 0x00007f2648205b5d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 5 (Thread 0x7f26043ee700 (LWP 22826)):
#0  0x00007f26481f9e8d in poll () at ../sysdeps/unix/syscall-template.S:84
#1  0x0000000000438a4e in poll () at /usr/bin/../lib/gcc/x86_64-linux-gnu/5.3.1/../../../../include/c++/5.3.1/iostream:74
#2  0x00007f263d2b231c in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f263d2b242c in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007f264966ea9b in QEventDispatcherGlib::processEvents (this=0x602000254770, flags=...) at kernel/qeventdispatcher_glib.cpp:420
#5  0x00007f2649615dea in QEventLoop::exec (this=this@entry=0x7f26043ed950, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#6  0x00007f26494328a4 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:503
#7  0x00007f2645182bf8 in KDevelop::CompletionWorkerThread::run (this=0x603000795760) at /home/kfunk/devel/src/kf5/kdevplatform-stable/language/codecompletion/codecompletionmodel.cpp:89
#8  0x00007f264943784e in QThreadPrivate::start (arg=0x603000795760) at thread/qthread_unix.cpp:331
#9  0x00007f2648af16fa in start_thread (arg=0x7f26043ee700) at pthread_create.c:333
#10 0x00007f2648205b5d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 4 (Thread 0x7f260b4ba700 (LWP 22943)):
#0  0x00007f26481f9e8d in poll () at ../sysdeps/unix/syscall-template.S:84
#1  0x0000000000438a4e in poll () at /usr/bin/../lib/gcc/x86_64-linux-gnu/5.3.1/../../../../include/c++/5.3.1/iostream:74
#2  0x00007f263d2b231c in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f263d2b242c in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007f264966ea7f in QEventDispatcherGlib::processEvents (this=0x6020006ecc50, flags=...) at kernel/qeventdispatcher_glib.cpp:418
#5  0x00007f2649615dea in QEventLoop::exec (this=this@entry=0x7f260b4b9c60, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#6  0x00007f26494328a4 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:503
#7  0x00007f264ea7b3c5 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#8  0x00007f264943784e in QThreadPrivate::start (arg=0x60c002122180) at thread/qthread_unix.cpp:331
#9  0x00007f2648af16fa in start_thread (arg=0x7f260b4ba700) at pthread_create.c:333
#10 0x00007f2648205b5d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 3 (Thread 0x7f260e766700 (LWP 23771)):
#0  0x00007f26481f9e8d in poll () at ../sysdeps/unix/syscall-template.S:84
#1  0x0000000000438a4e in poll () at /usr/bin/../lib/gcc/x86_64-linux-gnu/5.3.1/../../../../include/c++/5.3.1/iostream:74
#2  0x00007f263d2b231c in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f263d2b242c in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007f264966ea9b in QEventDispatcherGlib::processEvents (this=0x6020011db930, flags=...) at kernel/qeventdispatcher_glib.cpp:420
#5  0x00007f2649615dea in QEventLoop::exec (this=this@entry=0x7f260e765950, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#6  0x00007f26494328a4 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:503
#7  0x00007f2645182bf8 in KDevelop::CompletionWorkerThread::run (this=0x603002afd690) at /home/kfunk/devel/src/kf5/kdevplatform-stable/language/codecompletion/codecompletionmodel.cpp:89
#8  0x00007f264943784e in QThreadPrivate::start (arg=0x603002afd690) at thread/qthread_unix.cpp:331
#9  0x00007f2648af16fa in start_thread (arg=0x7f260e766700) at pthread_create.c:333
#10 0x00007f2648205b5d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 2 (Thread 0x7f25d3ef9700 (LWP 25973)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007f263ed02bd4 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Script.so.5
#2  0x00007f263ed02c19 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Script.so.5
#3  0x00007f2648af16fa in start_thread (arg=0x7f25d3ef9700) at pthread_create.c:333
#4  0x00007f2648205b5d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 1 (Thread 0x7f26320e5940 (LWP 22779)):
#0  syscall () at ../sysdeps/unix/sysv/linux/x86_64/syscall.S:38
#1  0x00007f264942f928 in _q_futex (op=0, val=3, timeout=0x0, addr=0x6060011e5fe0) at thread/qmutex_linux.cpp:146
#2  lockInternal_helper<false> (timeout=-1, elapsedTimer=0x0, d_ptr=...) at thread/qmutex_linux.cpp:187
#3  QBasicMutex::lockInternal (this=0x6060011e5fe0) at thread/qmutex_linux.cpp:203
#4  0x00007f260a4a159d in QMutexLocker::QMutexLocker (this=<optimized out>, m=<optimized out>) at /usr/include/x86_64-linux-gnu/qt5/QtCore/qmutex.h:128
#5  QmlJS::Cache::setFileCustomIncludes (this=0x6060011e5fe0, file=..., dirs={...}) at /home/kfunk/devel/src/kf5/kdevelop-stable/languages/qmljs/duchain/cache.cpp:196
#6  0x00007f260a46a63b in QmlJsParseJob::QmlJsParseJob (this=<optimized out>, url=..., languageSupport=<optimized out>) at /home/kfunk/devel/src/kf5/kdevelop-stable/languages/qmljs/qmljsparsejob.cpp:83
#7  0x00007f260a48e19b in non-virtual thunk to KDevQmlJsPlugin::createParseJob(KDevelop::IndexedString const&) () at /home/kfunk/devel/src/kf5/kdevelop-stable/languages/qmljs/kdevqmljsplugin.cpp:96
#8  0x00007f264452d3e1 in KDevelop::BackgroundParserPrivate::createParseJob (this=0x611000963240, url=..., features=KDevelop::TopDUContext::Features::VisibleDeclarationsAndContexts, notifyWhenReady=Python Exception <class 'TypeError'> un
supported operand type(s) for +: 'NoneType' and 'str':
, priority=10000) at /home/kfunk/devel/src/kf5/kdevplatform-stable/language/backgroundparser/backgroundparser.cpp:265
#9  0x00007f26445171e2 in KDevelop::BackgroundParserPrivate::parseDocumentsInternal (this=0x611000963240) at /home/kfunk/devel/src/kf5/kdevplatform-stable/language/backgroundparser/backgroundparser.cpp:199
#10 0x00007f26445001d2 in KDevelop::BackgroundParser::parseDocuments (this=0x6030004f9e10) at /home/kfunk/devel/src/kf5/kdevplatform-stable/language/backgroundparser/backgroundparser.cpp:598
#11 0x00007f26455120f2 in KDevelop::BackgroundParser::qt_static_metacall (_o=0x6030004f9e10, _c=QMetaObject::InvokeMetaMethod, _id=18, _a=0x602001061f70) at /home/kfunk/devel/build/kf5/kdevplatform-stable/language/moc_backgroundparser.cp
p:264
#12 0x00007f2649647ea1 in QObject::event (this=0x6030004f9e10, e=<optimized out>) at kernel/qobject.cpp:1239
#13 0x00007f2649f0b05c in QApplicationPrivate::notify_helper (this=this@entry=0x61300000de80, receiver=receiver@entry=0x6030004f9e10, e=e@entry=0x60800179e5a0) at kernel/qapplication.cpp:3716
#14 0x00007f2649f10516 in QApplication::notify (this=0x7ffdf5a01320, receiver=0x6030004f9e10, e=0x60800179e5a0) at kernel/qapplication.cpp:3499
#15 0x00007f264961862b in QCoreApplication::notifyInternal (this=0x7ffdf5a01320, receiver=0x6030004f9e10, event=event@entry=0x60800179e5a0) at kernel/qcoreapplication.cpp:965
#16 0x00007f264961aa26 in QCoreApplication::sendEvent (event=0x60800179e5a0, receiver=<optimized out>) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:224
#17 QCoreApplicationPrivate::sendPostedEvents (receiver=receiver@entry=0x0, event_type=event_type@entry=0, data=0x60b00000ad80) at kernel/qcoreapplication.cpp:1593
#18 0x00007f264961af08 in QCoreApplication::sendPostedEvents (receiver=receiver@entry=0x0, event_type=event_type@entry=0) at kernel/qcoreapplication.cpp:1451
#19 0x00007f264966e673 in postEventSourceDispatch (s=0x60b000029860) at kernel/qeventdispatcher_glib.cpp:271
#20 0x00007f263d2b2127 in g_main_context_dispatch () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#21 0x00007f263d2b2380 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#22 0x00007f263d2b242c in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#23 0x00007f264966ea7f in QEventDispatcherGlib::processEvents (this=0x603000027c10, flags=...) at kernel/qeventdispatcher_glib.cpp:418
#24 0x00007f2649615dea in QEventLoop::exec (this=this@entry=0x7ffdf59fd600, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#25 0x00007f264961de8c in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1229
#26 0x0000000000506ea3 in main (argc=<optimized out>, argv=0x7ffdf5a03080) at /home/kfunk/devel/src/kf5/kdevelop-stable/app/main.cpp:714

Reproducible: Always