Application: kdevelop (5.3.3)

Qt Version: 5.12.3
Frameworks Version: 5.60.0
Operating System: Linux 4.18.0-25-generic x86_64
Distribution: KDE neon User Edition 5.16

-- Information about the crash:
- What I was doing when the application crashed:
Writing some code while the background parser was running

- Reproducibility: 3 times today

- Please take a look at the stacktrace

The crash can be reproduced sometimes.

-- 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 0x7f4a968c7bc0 (LWP 23599))]

Thread 9 (Thread 0x7f4a2d569700 (LWP 23732)):
#0  0x00007f4a8bb7e9f3 in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x55ed7b8f78a4) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  0x00007f4a8bb7e9f3 in __pthread_cond_wait_common (abstime=0x0, mutex=0x55ed7b8f7850, cond=0x55ed7b8f7878) at pthread_cond_wait.c:502
#2  0x00007f4a8bb7e9f3 in __pthread_cond_wait (cond=0x55ed7b8f7878, mutex=0x55ed7b8f7850) at pthread_cond_wait.c:655
#3  0x00007f4a93581dbb in QWaitCondition::wait(QMutex*, QDeadlineTimer) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007f4a935820c9 in QWaitCondition::wait(QMutex*, unsigned long) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f4a8977a925 in ThreadWeaver::Weaver::takeFirstAvailableJobOrSuspendOrWait(ThreadWeaver::Thread*, bool, bool, bool) () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#6  0x00007f4a8977e7d8 in  () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#7  0x00007f4a89779bed in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#8  0x00007f4a8977e832 in  () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#9  0x00007f4a89779bed in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#10 0x00007f4a8977e832 in  () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#11 0x00007f4a89779bed in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#12 0x00007f4a8977c69b in ThreadWeaver::Thread::run() () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#13 0x00007f4a9357ac72 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#14 0x00007f4a8bb786db in start_thread (arg=0x7f4a2d569700) at pthread_create.c:463
#15 0x00007f4a92e7a88f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 8 (Thread 0x7f4a2dd6a700 (LWP 23731)):
[KCrash Handler]
#6  0x00000000000000e1 in  ()
#7  0x00007f4a3b8d4263 in clang::ASTUnit::~ASTUnit() () at /usr/lib/llvm-6.0/lib/libclang-6.0.so.1
#8  0x00007f4a3b8d4b72 in llvm::CrashRecoveryContextDeleteCleanup<clang::ASTUnit>::recoverResources() () at /usr/lib/llvm-6.0/lib/libclang-6.0.so.1
#9  0x00007f4a3816a171 in llvm::CrashRecoveryContext::~CrashRecoveryContext() () at /usr/lib/llvm-6.0/lib/../lib/libLLVM-6.0.so.1
#10 0x00007f4a3b65c4b4 in clang_parseTranslationUnit2FullArgv () at /usr/lib/llvm-6.0/lib/libclang-6.0.so.1
#11 0x00007f4a3b65c901 in clang_parseTranslationUnit2 () at /usr/lib/llvm-6.0/lib/libclang-6.0.so.1
#12 0x00007f4a3cfba884 in ParseSessionData::ParseSessionData(QVector<UnsavedFile> const&, ClangIndex*, ClangParsingEnvironment const&, QFlags<ParseSessionData::Option>) (this=<optimized out>, unsavedFiles=..., index=<optimized out>, environment=..., options=...) at ./plugins/clang/duchain/parsesession.cpp:313
#13 0x00007f4a3d201613 in ClangParseJob::createSessionData() const (this=this@entry=0x55ed810addd0) at ./plugins/clang/clangparsejob.cpp:380
#14 0x00007f4a3d204252 in ClangParseJob::run(QSharedPointer<ThreadWeaver::JobInterface>, ThreadWeaver::Thread*) (this=0x55ed810addd0) at ./plugins/clang/clangparsejob.cpp:256
#15 0x00007f4a8977d9ba in ThreadWeaver::IdDecorator::run(QSharedPointer<ThreadWeaver::JobInterface>, ThreadWeaver::Thread*) () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#16 0x00007f4a8977df98 in ThreadWeaver::Executor::run(QSharedPointer<ThreadWeaver::JobInterface> const&, ThreadWeaver::Thread*) () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#17 0x00007f4a8977cc00 in ThreadWeaver::Job::execute(QSharedPointer<ThreadWeaver::JobInterface> const&, ThreadWeaver::Thread*) () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#18 0x00007f4a8977c75d in ThreadWeaver::Thread::run() () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#19 0x00007f4a9357ac72 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#20 0x00007f4a8bb786db in start_thread (arg=0x7f4a2dd6a700) at pthread_create.c:463
#21 0x00007f4a92e7a88f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 7 (Thread 0x7f4a2ed6c700 (LWP 23671)):
#0  0x00007f4a89a22664 in g_mutex_unlock () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#1  0x00007f4a899dc47d in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f4a899dc6dc in g_main_context_iteration () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f4a937b0dcb in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007f4a9375203a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f4a935794ca in QThread::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007f4a9357ac72 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007f4a8bb786db in start_thread (arg=0x7f4a2ed6c700) at pthread_create.c:463
#8  0x00007f4a92e7a88f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 6 (Thread 0x7f4a37560700 (LWP 23605)):
#0  0x00007f4a92e6dbf9 in __GI___poll (fds=0x7f4a30003ce0, nfds=1, timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:29
#1  0x00007f4a899dc5c9 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f4a899dc6dc in g_main_context_iteration () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f4a937b0dcb in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007f4a9375203a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f4a935794ca in QThread::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007f4a91c80ecf in KDevelop::CompletionWorkerThread::run() (this=0x55ed7bd1a590) at ./kdevplatform/language/codecompletion/codecompletionmodel.cpp:79
#7  0x00007f4a9357ac72 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007f4a8bb786db in start_thread (arg=0x7f4a37560700) at pthread_create.c:463
#9  0x00007f4a92e7a88f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 5 (Thread 0x7f4a45e92700 (LWP 23604)):
#0  0x00007f4a937b0abb in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#1  0x00007f4a899dbb28 in g_main_context_prepare () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f4a899dc4fb in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f4a899dc6dc in g_main_context_iteration () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007f4a937b0dcb in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f4a9375203a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007f4a935794ca in QThread::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007f4a91b79a3b in KDevelop::DUChainPrivate::CleanupThread::run() (this=0x55ed7bb577c0) at ./kdevplatform/language/duchain/duchain.cpp:287
#8  0x00007f4a9357ac72 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#9  0x00007f4a8bb786db in start_thread (arg=0x7f4a45e92700) at pthread_create.c:463
#10 0x00007f4a92e7a88f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 4 (Thread 0x7f4a53bf0700 (LWP 23602)):
#0  0x00007f4a92e6dbf9 in __GI___poll (fds=0x7f4a4c004db0, nfds=1, timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:29
#1  0x00007f4a899dc5c9 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f4a899dc6dc in g_main_context_iteration () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f4a937b0dcb in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007f4a9375203a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f4a935794ca in QThread::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007f4a948f4015 in  () at /usr/lib/x86_64-linux-gnu/libQt5DBus.so.5
#7  0x00007f4a9357ac72 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007f4a8bb786db in start_thread (arg=0x7f4a53bf0700) at pthread_create.c:463
#9  0x00007f4a92e7a88f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 3 (Thread 0x7f4a5a003700 (LWP 23601)):
#0  0x00007f4a8bb7e9f3 in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x55ed7b23d978) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  0x00007f4a8bb7e9f3 in __pthread_cond_wait_common (abstime=0x0, mutex=0x55ed7b23d928, cond=0x55ed7b23d950) at pthread_cond_wait.c:502
#2  0x00007f4a8bb7e9f3 in __pthread_cond_wait (cond=0x55ed7b23d950, mutex=0x55ed7b23d928) at pthread_cond_wait.c:655
#3  0x00007f4a5b0cd31a in  () at /usr/lib/x86_64-linux-gnu/dri/i965_dri.so
#4  0x00007f4a5b0cd047 in  () at /usr/lib/x86_64-linux-gnu/dri/i965_dri.so
#5  0x00007f4a8bb786db in start_thread (arg=0x7f4a5a003700) at pthread_create.c:463
#6  0x00007f4a92e7a88f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 2 (Thread 0x7f4a62a1f700 (LWP 23600)):
#0  0x00007f4a92e6dbf9 in __GI___poll (fds=0x7f4a62a1e8e8, nfds=1, timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:29
#1  0x00007f4a7e9a3747 in  () at /usr/lib/x86_64-linux-gnu/libxcb.so.1
#2  0x00007f4a7e9a536a in xcb_wait_for_event () at /usr/lib/x86_64-linux-gnu/libxcb.so.1
#3  0x00007f4a64b6e578 in  () at /usr/lib/x86_64-linux-gnu/libQt5XcbQpa.so.5
#4  0x00007f4a9357ac72 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f4a8bb786db in start_thread (arg=0x7f4a62a1f700) at pthread_create.c:463
#6  0x00007f4a92e7a88f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 1 (Thread 0x7f4a968c7bc0 (LWP 23599)):
#0  0x00007f4a8bb7e9f3 in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x7ffed31c4588) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  0x00007f4a8bb7e9f3 in __pthread_cond_wait_common (abstime=0x0, mutex=0x55ed7b2054b8, cond=0x7ffed31c4560) at pthread_cond_wait.c:502
#2  0x00007f4a8bb7e9f3 in __pthread_cond_wait (cond=0x7ffed31c4560, mutex=0x55ed7b2054b8) at pthread_cond_wait.c:655
#3  0x00007f4a7e9a3952 in  () at /usr/lib/x86_64-linux-gnu/libxcb.so.1
#4  0x00007f4a7e9a506f in  () at /usr/lib/x86_64-linux-gnu/libxcb.so.1
#5  0x00007f4a7e9a5180 in xcb_wait_for_reply () at /usr/lib/x86_64-linux-gnu/libxcb.so.1
#6  0x00007f4a64b4717a in QXcbConnection::sync() () at /usr/lib/x86_64-linux-gnu/libQt5XcbQpa.so.5
#7  0x00007f4a64b62d83 in  () at /usr/lib/x86_64-linux-gnu/libQt5XcbQpa.so.5
#8  0x00007f4a64b6312c in  () at /usr/lib/x86_64-linux-gnu/libQt5XcbQpa.so.5
#9  0x00007f4a943b668b in QBackingStore::beginPaint(QRegion const&) () at /usr/lib/x86_64-linux-gnu/libQt5Gui.so.5
#10 0x00007f4a94f39014 in  () at /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#11 0x00007f4a94f394a5 in  () at /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#12 0x00007f4a94f518bf in QWidgetPrivate::syncBackingStore() () at /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#13 0x00007f4a94f69b38 in QWidget::event(QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#14 0x00007f4a95072e50 in QMainWindow::event(QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#15 0x00007f4a8f662a11 in KMainWindow::event(QEvent*) () at /usr/lib/x86_64-linux-gnu/libKF5XmlGui.so.5
#16 0x00007f4a8f6a8935 in KXmlGuiWindow::event(QEvent*) () at /usr/lib/x86_64-linux-gnu/libKF5XmlGui.so.5
#17 0x00007f4a94f2965c in QApplicationPrivate::notify_helper(QObject*, QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#18 0x00007f4a94f30b90 in QApplication::notify(QObject*, QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#19 0x00007f4a93753d18 in QCoreApplication::notifyInternal2(QObject*, QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#20 0x00007f4a937568d7 in QCoreApplicationPrivate::sendPostedEvents(QObject*, int, QThreadData*) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#21 0x00007f4a937b1793 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#22 0x00007f4a899dc417 in g_main_context_dispatch () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#23 0x00007f4a899dc650 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#24 0x00007f4a899dc6dc in g_main_context_iteration () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#25 0x00007f4a937b0daf in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#26 0x00007f4a9375203a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#27 0x00007f4a9375b170 in QCoreApplication::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#28 0x000055ed7af34190 in main(int, char**) (argc=<optimized out>, argv=<optimized out>) at ./app/main.cpp:849

Possible duplicates by query: bug 406189.

Reported using DrKonqi