Application: kdevelop (4.90.90)
 (Compiled from sources)
Qt Version: 5.4.2
Operating System: Linux 4.0.5-gentoo x86_64
Distribution (Platform): Gentoo Packages

-- Information about the crash:
When I close Kdevlop it crashes it does this randomly.I am on Gentoo so all was compiled from source by Portage.There are a few more small things I am not sure if I a suppose to make a seprate report or not.The open session always opens the last session it does not give me the choice after I create the first session.I Used the quick tile keyboard shortcuts for kwin and now kdevelop always opens in the size and postion it was in.This is a excellent IDE I Love and you guys do great work I hope this was helpful.

The crash can be reproduced sometimes.

-- Backtrace:
Application: KDevelop (kdevelop), signal: Segmentation fault
Using host libthread_db library "/lib64/libthread_db.so.1".
[Current thread is 1 (Thread 0x7f4d01fc3780 (LWP 3419))]

Thread 7 (Thread 0x7f4cf7fff700 (LWP 3422)):
#0  0x00007f4d10604c18 in pthread_cond_timedwait@@GLIBC_2.3.2 () from /lib64/libpthread.so.0
#1  0x00007f4d16d91409 in QWaitCondition::wait(QMutex*, unsigned long) () from /usr/lib64/libQt5Core.so.5
#2  0x00007f4d14c34e03 in KDevelop::DUChainPrivate::CleanupThread::run() () from /usr/lib64/libKDevPlatformLanguage.so.9
#3  0x00007f4d16d9039b in QThreadPrivate::start(void*) () from /usr/lib64/libQt5Core.so.5
#4  0x00007f4d106003a4 in start_thread () from /lib64/libpthread.so.0
#5  0x00007f4d1673886d in clone () from /lib64/libc.so.6

Thread 6 (Thread 0x7f4ceac33700 (LWP 3423)):
#0  0x00007f4d0e76c949 in g_mutex_lock () from /usr/lib64/libglib-2.0.so.0
#1  0x00007f4d0e72a2d9 in g_main_context_prepare () from /usr/lib64/libglib-2.0.so.0
#2  0x00007f4d0e72ab43 in ?? () from /usr/lib64/libglib-2.0.so.0
#3  0x00007f4d0e72ad2c in g_main_context_iteration () from /usr/lib64/libglib-2.0.so.0
#4  0x00007f4d16fd0e3b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib64/libQt5Core.so.5
#5  0x00007f4d16f756db in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib64/libQt5Core.so.5
#6  0x00007f4d16d8b56a in QThread::exec() () from /usr/lib64/libQt5Core.so.5
#7  0x00007f4d16d9039b in QThreadPrivate::start(void*) () from /usr/lib64/libQt5Core.so.5
#8  0x00007f4d106003a4 in start_thread () from /lib64/libpthread.so.0
#9  0x00007f4d1673886d in clone () from /lib64/libc.so.6

Thread 5 (Thread 0x7f4cfe6bb700 (LWP 5585)):
#0  0x00007f4d16fd0b81 in timerSourcePrepare(_GSource*, int*) () from /usr/lib64/libQt5Core.so.5
#1  0x00007f4d0e72a2cd in g_main_context_prepare () from /usr/lib64/libglib-2.0.so.0
#2  0x00007f4d0e72ab43 in ?? () from /usr/lib64/libglib-2.0.so.0
#3  0x00007f4d0e72ad2c in g_main_context_iteration () from /usr/lib64/libglib-2.0.so.0
#4  0x00007f4d16fd0e3b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib64/libQt5Core.so.5
#5  0x00007f4d16f756db in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib64/libQt5Core.so.5
#6  0x00007f4d16d8b56a in QThread::exec() () from /usr/lib64/libQt5Core.so.5
#7  0x00007f4d14d19d53 in KDevelop::CompletionWorkerThread::run() () from /usr/lib64/libKDevPlatformLanguage.so.9
#8  0x00007f4d16d9039b in QThreadPrivate::start(void*) () from /usr/lib64/libQt5Core.so.5
#9  0x00007f4d106003a4 in start_thread () from /lib64/libpthread.so.0
#10 0x00007f4d1673886d in clone () from /lib64/libc.so.6

Thread 4 (Thread 0x7f4ce3fff700 (LWP 5724)):
#0  0x00007f4d1060486f in pthread_cond_wait@@GLIBC_2.3.2 () from /lib64/libpthread.so.0
#1  0x00007f4d16d914bb in QWaitCondition::wait(QMutex*, unsigned long) () from /usr/lib64/libQt5Core.so.5
#2  0x00007f4d0d4f38bf in ThreadWeaver::Weaver::takeFirstAvailableJobOrSuspendOrWait(ThreadWeaver::Thread*, bool, bool, bool) () from /usr/lib64/libKF5ThreadWeaver.so.5
#3  0x00007f4d0d4f770a in ThreadWeaver::WorkingHardState::applyForWork(ThreadWeaver::Thread*, bool) () from /usr/lib64/libKF5ThreadWeaver.so.5
#4  0x00007f4d0d4f18ab in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () from /usr/lib64/libKF5ThreadWeaver.so.5
#5  0x00007f4d0d4f5355 in ThreadWeaver::Thread::run() () from /usr/lib64/libKF5ThreadWeaver.so.5
#6  0x00007f4d16d9039b in QThreadPrivate::start(void*) () from /usr/lib64/libQt5Core.so.5
#7  0x00007f4d106003a4 in start_thread () from /lib64/libpthread.so.0
#8  0x00007f4d1673886d in clone () from /lib64/libc.so.6

Thread 3 (Thread 0x7f4cd6bb4700 (LWP 5725)):
#0  0x00007f4d1060486f in pthread_cond_wait@@GLIBC_2.3.2 () from /lib64/libpthread.so.0
#1  0x00007f4d16d914bb in QWaitCondition::wait(QMutex*, unsigned long) () from /usr/lib64/libQt5Core.so.5
#2  0x00007f4d0d4f38bf in ThreadWeaver::Weaver::takeFirstAvailableJobOrSuspendOrWait(ThreadWeaver::Thread*, bool, bool, bool) () from /usr/lib64/libKF5ThreadWeaver.so.5
#3  0x00007f4d0d4f770a in ThreadWeaver::WorkingHardState::applyForWork(ThreadWeaver::Thread*, bool) () from /usr/lib64/libKF5ThreadWeaver.so.5
#4  0x00007f4d0d4f18ab in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () from /usr/lib64/libKF5ThreadWeaver.so.5
#5  0x00007f4d0d4f7751 in ThreadWeaver::WorkingHardState::applyForWork(ThreadWeaver::Thread*, bool) () from /usr/lib64/libKF5ThreadWeaver.so.5
#6  0x00007f4d0d4f18ab in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () from /usr/lib64/libKF5ThreadWeaver.so.5
#7  0x00007f4d0d4f5355 in ThreadWeaver::Thread::run() () from /usr/lib64/libKF5ThreadWeaver.so.5
#8  0x00007f4d16d9039b in QThreadPrivate::start(void*) () from /usr/lib64/libQt5Core.so.5
#9  0x00007f4d106003a4 in start_thread () from /lib64/libpthread.so.0
#10 0x00007f4d1673886d in clone () from /lib64/libc.so.6

Thread 2 (Thread 0x7f4cd63b3700 (LWP 5739)):
#0  0x00007f4d1060486f in pthread_cond_wait@@GLIBC_2.3.2 () from /lib64/libpthread.so.0
#1  0x00007f4d0e3ca21b in QTWTF::TCMalloc_PageHeap::scavengerThread() () from /usr/lib64/libQt5Script.so.5
#2  0x00007f4d0e3ca249 in QTWTF::TCMalloc_PageHeap::runScavengerThread(void*) () from /usr/lib64/libQt5Script.so.5
#3  0x00007f4d106003a4 in start_thread () from /lib64/libpthread.so.0
#4  0x00007f4d1673886d in clone () from /lib64/libc.so.6

Thread 1 (Thread 0x7f4d01fc3780 (LWP 3419)):
[KCrash Handler]
#5  0x00007f4d1971555a in QSqlDatabase::close() () from /usr/lib64/libQt5Sql.so.5
#6  0x00007f4d1971642d in QSqlDatabase::~QSqlDatabase() () from /usr/lib64/libQt5Sql.so.5
#7  0x00007f4d1971866d in QHash<QString, QSqlDatabase>::deleteNode2(QHashData::Node*) () from /usr/lib64/libQt5Sql.so.5
#8  0x00007f4d16df6109 in QHashData::free_helper(void (*)(QHashData::Node*)) () from /usr/lib64/libQt5Core.so.5
#9  0x00007f4d197151a3 in (anonymous namespace)::Q_QGS_dbDict::innerFunction()::Holder::~Holder() () from /usr/lib64/libQt5Sql.so.5
#10 0x00007f4d16688719 in ?? () from /lib64/libc.so.6
#11 0x00007f4d16688765 in exit () from /lib64/libc.so.6
#12 0x00007f4d01da4271 in QXcbConnection::processXcbEvents() () from /usr/lib64/qt5/plugins/platforms/libqxcb.so
#13 0x00007f4d16fa9186 in QObject::event(QEvent*) () from /usr/lib64/libQt5Core.so.5
#14 0x00007f4d1782884c in QApplicationPrivate::notify_helper(QObject*, QEvent*) () from /usr/lib64/libQt5Widgets.so.5
#15 0x00007f4d1782d660 in QApplication::notify(QObject*, QEvent*) () from /usr/lib64/libQt5Widgets.so.5
#16 0x00007f4d16f7784d in QCoreApplication::notifyInternal(QObject*, QEvent*) () from /usr/lib64/libQt5Core.so.5
#17 0x00007f4d16f7978f in QCoreApplicationPrivate::sendPostedEvents(QObject*, int, QThreadData*) () from /usr/lib64/libQt5Core.so.5
#18 0x00007f4d16fd19d3 in postEventSourceDispatch(_GSource*, int (*)(void*), void*) () from /usr/lib64/libQt5Core.so.5
#19 0x00007f4d0e72aa44 in g_main_context_dispatch () from /usr/lib64/libglib-2.0.so.0
#20 0x00007f4d0e72ac88 in ?? () from /usr/lib64/libglib-2.0.so.0
#21 0x00007f4d0e72ad2c in g_main_context_iteration () from /usr/lib64/libglib-2.0.so.0
#22 0x00007f4d16fd0e1c in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib64/libQt5Core.so.5
#23 0x00007f4d16f756db in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib64/libQt5Core.so.5
#24 0x00007f4d179f31dd in QDialog::exec() () from /usr/lib64/libQt5Widgets.so.5
#25 0x00007f4cff66bcde in KDEPlatformFileDialogHelper::exec() () from /usr/lib64/qt5/plugins/platformthemes/KDEPlatformTheme.so
#26 0x00007f4d179f308a in QDialog::exec() () from /usr/lib64/libQt5Widgets.so.5
#27 0x00007f4d12c25645 in KUrlRequester::KUrlRequesterPrivate::_k_slotOpenDialog() () from /usr/lib64/libKF5KIOWidgets.so.5
#28 0x00007f4d12c26ef1 in KUrlRequester::qt_static_metacall(QObject*, QMetaObject::Call, int, void**) () from /usr/lib64/libKF5KIOWidgets.so.5
#29 0x00007f4d16fa82d8 in QMetaObject::activate(QObject*, int, int, void**) () from /usr/lib64/libQt5Core.so.5
#30 0x00007f4d17b861e2 in QAbstractButton::clicked(bool) () from /usr/lib64/libQt5Widgets.so.5
#31 0x00007f4d178ff8b6 in QAbstractButtonPrivate::emitClicked() () from /usr/lib64/libQt5Widgets.so.5
#32 0x00007f4d179003ae in QAbstractButtonPrivate::click() () from /usr/lib64/libQt5Widgets.so.5
#33 0x00007f4d17900524 in QAbstractButton::mouseReleaseEvent(QMouseEvent*) () from /usr/lib64/libQt5Widgets.so.5
#34 0x00007f4d17868191 in QWidget::event(QEvent*) () from /usr/lib64/libQt5Widgets.so.5
#35 0x00007f4d1782884c in QApplicationPrivate::notify_helper(QObject*, QEvent*) () from /usr/lib64/libQt5Widgets.so.5
#36 0x00007f4d1782e134 in QApplication::notify(QObject*, QEvent*) () from /usr/lib64/libQt5Widgets.so.5
#37 0x00007f4d16f7784d in QCoreApplication::notifyInternal(QObject*, QEvent*) () from /usr/lib64/libQt5Core.so.5
#38 0x00007f4d1782cb41 in QApplicationPrivate::sendMouseEvent(QWidget*, QMouseEvent*, QWidget*, QWidget*, QWidget**, QPointer<QWidget>&, bool) () from /usr/lib64/libQt5Widgets.so.5
#39 0x00007f4d1787f466 in QWidgetWindow::handleMouseEvent(QMouseEvent*) () from /usr/lib64/libQt5Widgets.so.5
#40 0x00007f4d1788124b in QWidgetWindow::event(QEvent*) () from /usr/lib64/libQt5Widgets.so.5
#41 0x00007f4d1782884c in QApplicationPrivate::notify_helper(QObject*, QEvent*) () from /usr/lib64/libQt5Widgets.so.5
#42 0x00007f4d1782d660 in QApplication::notify(QObject*, QEvent*) () from /usr/lib64/libQt5Widgets.so.5
#43 0x00007f4d16f7784d in QCoreApplication::notifyInternal(QObject*, QEvent*) () from /usr/lib64/libQt5Core.so.5
#44 0x00007f4d172a1a0f in QGuiApplicationPrivate::processMouseEvent(QWindowSystemInterfacePrivate::MouseEvent*) () from /usr/lib64/libQt5Gui.so.5
#45 0x00007f4d172a32d5 in QGuiApplicationPrivate::processWindowSystemEvent(QWindowSystemInterfacePrivate::WindowSystemEvent*) () from /usr/lib64/libQt5Gui.so.5
#46 0x00007f4d17289558 in QWindowSystemInterface::sendWindowSystemEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib64/libQt5Gui.so.5
#47 0x00007f4d01dccb00 in userEventSourceDispatch(_GSource*, int (*)(void*), void*) () from /usr/lib64/qt5/plugins/platforms/libqxcb.so
#48 0x00007f4d0e72aa44 in g_main_context_dispatch () from /usr/lib64/libglib-2.0.so.0
#49 0x00007f4d0e72ac88 in ?? () from /usr/lib64/libglib-2.0.so.0
#50 0x00007f4d0e72ad2c in g_main_context_iteration () from /usr/lib64/libglib-2.0.so.0
#51 0x00007f4d16fd0e1c in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib64/libQt5Core.so.5
#52 0x00007f4d16f756db in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib64/libQt5Core.so.5
#53 0x00007f4d179f31dd in QDialog::exec() () from /usr/lib64/libQt5Widgets.so.5
#54 0x00007f4d193a2a45 in QtPrivate::QFunctorSlotObject<KDevelop::RunController::setupActions()::{lambda()#1}, 0, QtPrivate::List<>, void>::impl(int, QtPrivate::QSlotObjectBase*, QObject*, void**, bool*) () from /usr/lib64/libKDevPlatformShell.so.9
#55 0x00007f4d16fa7c7b in QMetaObject::activate(QObject*, int, int, void**) () from /usr/lib64/libQt5Core.so.5
#56 0x00007f4d1781f332 in QAction::triggered(bool) () from /usr/lib64/libQt5Widgets.so.5
#57 0x00007f4d17821808 in QAction::activate(QAction::ActionEvent) () from /usr/lib64/libQt5Widgets.so.5
#58 0x00007f4d179767da in QMenuPrivate::activateCausedStack(QList<QPointer<QWidget> > const&, QAction*, QAction::ActionEvent, bool) () from /usr/lib64/libQt5Widgets.so.5
#59 0x00007f4d1797bd04 in QMenuPrivate::activateAction(QAction*, QAction::ActionEvent, bool) () from /usr/lib64/libQt5Widgets.so.5
#60 0x00007f4d1797fdd6 in QMenu::mouseReleaseEvent(QMouseEvent*) () from /usr/lib64/libQt5Widgets.so.5
#61 0x00007f4d17868191 in QWidget::event(QEvent*) () from /usr/lib64/libQt5Widgets.so.5
#62 0x00007f4d1798056b in QMenu::event(QEvent*) () from /usr/lib64/libQt5Widgets.so.5
#63 0x00007f4d1782884c in QApplicationPrivate::notify_helper(QObject*, QEvent*) () from /usr/lib64/libQt5Widgets.so.5
#64 0x00007f4d1782e134 in QApplication::notify(QObject*, QEvent*) () from /usr/lib64/libQt5Widgets.so.5
#65 0x00007f4d16f7784d in QCoreApplication::notifyInternal(QObject*, QEvent*) () from /usr/lib64/libQt5Core.so.5
#66 0x00007f4d1782cb41 in QApplicationPrivate::sendMouseEvent(QWidget*, QMouseEvent*, QWidget*, QWidget*, QWidget**, QPointer<QWidget>&, bool) () from /usr/lib64/libQt5Widgets.so.5
#67 0x00007f4d1787f1f7 in QWidgetWindow::handleMouseEvent(QMouseEvent*) () from /usr/lib64/libQt5Widgets.so.5
#68 0x00007f4d1788124b in QWidgetWindow::event(QEvent*) () from /usr/lib64/libQt5Widgets.so.5
#69 0x00007f4d1782884c in QApplicationPrivate::notify_helper(QObject*, QEvent*) () from /usr/lib64/libQt5Widgets.so.5
#70 0x00007f4d1782d660 in QApplication::notify(QObject*, QEvent*) () from /usr/lib64/libQt5Widgets.so.5
#71 0x00007f4d16f7784d in QCoreApplication::notifyInternal(QObject*, QEvent*) () from /usr/lib64/libQt5Core.so.5
#72 0x00007f4d172a1a0f in QGuiApplicationPrivate::processMouseEvent(QWindowSystemInterfacePrivate::MouseEvent*) () from /usr/lib64/libQt5Gui.so.5
#73 0x00007f4d172a32d5 in QGuiApplicationPrivate::processWindowSystemEvent(QWindowSystemInterfacePrivate::WindowSystemEvent*) () from /usr/lib64/libQt5Gui.so.5
#74 0x00007f4d17289558 in QWindowSystemInterface::sendWindowSystemEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib64/libQt5Gui.so.5
#75 0x00007f4d01dccb00 in userEventSourceDispatch(_GSource*, int (*)(void*), void*) () from /usr/lib64/qt5/plugins/platforms/libqxcb.so
#76 0x00007f4d0e72aa44 in g_main_context_dispatch () from /usr/lib64/libglib-2.0.so.0
#77 0x00007f4d0e72ac88 in ?? () from /usr/lib64/libglib-2.0.so.0
#78 0x00007f4d0e72ad2c in g_main_context_iteration () from /usr/lib64/libglib-2.0.so.0
#79 0x00007f4d16fd0e1c in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib64/libQt5Core.so.5
#80 0x00007f4d16f756db in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib64/libQt5Core.so.5
#81 0x00007f4d16f7d12f in QCoreApplication::exec() () from /usr/lib64/libQt5Core.so.5
#82 0x000000000040dbf7 in main ()

Reported using DrKonqi