Bug 334950

Application: kdevelop (4.6.0)
KDE Platform Version: 4.13.0
Qt Version: 4.8.6
Operating System: Linux 3.13.0-24-generic x86_64
Distribution: Ubuntu 14.04 LTS

-- Information about the crash:
- What I was doing when the application crashed:

I was just trying to run a small python plasma script.
I'm just learning so I've no idea why it caused it to crash. I thought running it woulkd allow me to debug the script but it just crashes the IDE

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 0x7fb62e956800 (LWP 17041))]

Thread 9 (Thread 0x7fb612ef7700 (LWP 17042)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007fb6279bfffb in ?? () from /usr/lib/x86_64-linux-gnu/libQtScript.so.4
#2  0x00007fb6279c0039 in ?? () from /usr/lib/x86_64-linux-gnu/libQtScript.so.4
#3  0x00007fb62a588182 in start_thread (arg=0x7fb612ef7700) at pthread_create.c:312
#4  0x00007fb62b22c30d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111

Thread 8 (Thread 0x7fb591aea700 (LWP 17043)):
#0  0x00007fb62b21d6bd in read () at ../sysdeps/unix/syscall-template.S:81
#1  0x00007fb625624c20 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007fb6255e3b14 in g_main_context_check () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007fb6255e3f7b in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007fb6255e40ec in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007fb62c6587be in QEventDispatcherGlib::processEvents (this=0x7fb58c0008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:436
#6  0x00007fb62c62a0af in QEventLoop::processEvents (this=this@entry=0x7fb591ae9da0, flags=...) at kernel/qeventloop.cpp:149
#7  0x00007fb62c62a3a5 in QEventLoop::exec (this=this@entry=0x7fb591ae9da0, flags=...) at kernel/qeventloop.cpp:204
#8  0x00007fb62c526c5f in QThread::exec (this=this@entry=0x1bc45d0) at thread/qthread.cpp:537
#9  0x00007fb62c60b823 in QInotifyFileSystemWatcherEngine::run (this=0x1bc45d0) at io/qfilesystemwatcher_inotify.cpp:265
#10 0x00007fb62c52932f in QThreadPrivate::start (arg=0x1bc45d0) at thread/qthread_unix.cpp:349
#11 0x00007fb62a588182 in start_thread (arg=0x7fb591aea700) at pthread_create.c:312
#12 0x00007fb62b22c30d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111

Thread 7 (Thread 0x7fb58bfff700 (LWP 17044)):
#0  pthread_cond_timedwait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_timedwait.S:238
#1  0x00007fb62c5297f4 in wait (time=1000, this=0x2fe4a50) at thread/qwaitcondition_unix.cpp:84
#2  QWaitCondition::wait (this=this@entry=0x2fe7158, mutex=mutex@entry=0x2fe7160, time=time@entry=1000) at thread/qwaitcondition_unix.cpp:158
#3  0x00007fb628652e42 in KDevelop::DUChainPrivate::CleanupThread::run (this=0x2fe7140) at ../../language/duchain/duchain.cpp:285
#4  0x00007fb62c52932f in QThreadPrivate::start (arg=0x2fe7140) at thread/qthread_unix.cpp:349
#5  0x00007fb62a588182 in start_thread (arg=0x7fb58bfff700) at pthread_create.c:312
#6  0x00007fb62b22c30d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111

Thread 6 (Thread 0x7fb580aca700 (LWP 17046)):
#0  0x00007fb62a58b7ee in __pthread_mutex_unlock_usercnt (decr=1, mutex=0x7fb57c000a60) at pthread_mutex_unlock.c:57
#1  __GI___pthread_mutex_unlock (mutex=0x7fb57c000a60) at pthread_mutex_unlock.c:310
#2  0x00007fb6256259c1 in g_mutex_unlock () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007fb6255e3718 in g_main_context_prepare () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007fb6255e3f03 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007fb6255e40ec in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#6  0x00007fb62c6587be in QEventDispatcherGlib::processEvents (this=0x7fb57c0008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:436
#7  0x00007fb62c62a0af in QEventLoop::processEvents (this=this@entry=0x7fb580ac9de0, flags=...) at kernel/qeventloop.cpp:149
#8  0x00007fb62c62a3a5 in QEventLoop::exec (this=this@entry=0x7fb580ac9de0, flags=...) at kernel/qeventloop.cpp:204
#9  0x00007fb62c526c5f in QThread::exec (this=<optimized out>) at thread/qthread.cpp:537
#10 0x00007fb62c52932f in QThreadPrivate::start (arg=0x3a575b8) at thread/qthread_unix.cpp:349
#11 0x00007fb62a588182 in start_thread (arg=0x7fb580aca700) at pthread_create.c:312
#12 0x00007fb62b22c30d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111

Thread 5 (Thread 0x7fb5690e8700 (LWP 17057)):
#0  0x00007fb6255b5350 in pthread_getspecific@plt () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#1  0x00007fb6256093b0 in g_thread_self () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007fb6255e40dd in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007fb62c6587be in QEventDispatcherGlib::processEvents (this=0x7fb55c002000, flags=...) at kernel/qeventdispatcher_glib.cpp:436
#4  0x00007fb62c62a0af in QEventLoop::processEvents (this=this@entry=0x7fb5690e7da0, flags=...) at kernel/qeventloop.cpp:149
#5  0x00007fb62c62a3a5 in QEventLoop::exec (this=this@entry=0x7fb5690e7da0, flags=...) at kernel/qeventloop.cpp:204
#6  0x00007fb62c526c5f in QThread::exec (this=this@entry=0x4537d80) at thread/qthread.cpp:537
#7  0x00007fb62c60b823 in QInotifyFileSystemWatcherEngine::run (this=0x4537d80) at io/qfilesystemwatcher_inotify.cpp:265
#8  0x00007fb62c52932f in QThreadPrivate::start (arg=0x4537d80) at thread/qthread_unix.cpp:349
#9  0x00007fb62a588182 in start_thread (arg=0x7fb5690e8700) at pthread_create.c:312
#10 0x00007fb62b22c30d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111

Thread 4 (Thread 0x7fb5698e9700 (LWP 17066)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007fb62238781d in ?? () from /usr/lib/x86_64-linux-gnu/libQtWebKit.so.4
#2  0x00007fb622387859 in ?? () from /usr/lib/x86_64-linux-gnu/libQtWebKit.so.4
#3  0x00007fb62a588182 in start_thread (arg=0x7fb5698e9700) at pthread_create.c:312
#4  0x00007fb62b22c30d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111

Thread 3 (Thread 0x7fb5634da700 (LWP 17067)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007fb6220c820d in ?? () from /usr/lib/x86_64-linux-gnu/libQtWebKit.so.4
#2  0x00007fb6223b6fd6 in ?? () from /usr/lib/x86_64-linux-gnu/libQtWebKit.so.4
#3  0x00007fb62a588182 in start_thread (arg=0x7fb5634da700) at pthread_create.c:312
#4  0x00007fb62b22c30d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111

Thread 2 (Thread 0x7fb5628d9700 (LWP 17068)):
#0  0x00007fb62562562d in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#1  0x00007fb6256259b9 in g_mutex_unlock () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007fb6255e3fd9 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007fb6255e40ec in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007fb62c6587be in QEventDispatcherGlib::processEvents (this=0x7fb5140008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:436
#5  0x00007fb62c62a0af in QEventLoop::processEvents (this=this@entry=0x7fb5628d8de0, flags=...) at kernel/qeventloop.cpp:149
#6  0x00007fb62c62a3a5 in QEventLoop::exec (this=this@entry=0x7fb5628d8de0, flags=...) at kernel/qeventloop.cpp:204
#7  0x00007fb62c526c5f in QThread::exec (this=<optimized out>) at thread/qthread.cpp:537
#8  0x00007fb62c52932f in QThreadPrivate::start (arg=0x1c63950) at thread/qthread_unix.cpp:349
#9  0x00007fb62a588182 in start_thread (arg=0x7fb5628d9700) at pthread_create.c:312
#10 0x00007fb62b22c30d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111

Thread 1 (Thread 0x7fb62e956800 (LWP 17041)):
[KCrash Handler]
#6  QList (l=..., this=this@entry=0x7fff81e97960) at /usr/include/qt4/QtCore/qlist.h:122
#7  QStringList (l=..., this=this@entry=0x7fff81e97960) at /usr/include/qt4/QtCore/qstringlist.h:71
#8  KDevelop::IPlugin::extensions (this=this@entry=0x4cdb150) at ../../interfaces/iplugin.cpp:155
#9  0x00007fb62df1e7e9 in extension<KDevelop::IProjectFileManager> (this=0x4cdb150) at ../../interfaces/iplugin.h:176
#10 KDevelop::Project::projectFileManager (this=<optimized out>) at ../../shell/project.cpp:642
#11 0x00007fb58afc76ce in NativeAppConfigType::launcherSuggestions (this=0x1a6e120) at ../../../plugins/execute/nativeappconfig.cpp:449
#12 0x00007fb62df6a226 in KDevelop::LaunchConfigurationDialog::LaunchConfigurationDialog (this=0x7fff81e97c60, parent=<optimized out>) at ../../shell/launchconfigurationdialog.cpp:152
#13 0x00007fb62df3a26a in KDevelop::RunController::slotExecute (this=0x20e2f80) at ../../shell/runcontroller.cpp:536
#14 0x00007fb62df40b55 in KDevelop::RunController::qt_static_metacall (_o=0x7fff81e97960, _id=80589136, _a=0x740068002d0074, _c=<optimized out>) at ./runcontroller.moc:77
#15 0x00007fb62c63f87a in QMetaObject::activate (sender=sender@entry=0x2116c10, m=m@entry=0x7fb62c46ede0 <QAction::staticMetaObject>, local_signal_index=local_signal_index@entry=1, argv=argv@entry=0x7fff81e97f40) at kernel/qobject.cpp:3539
#16 0x00007fb62b9bea62 in QAction::triggered (this=this@entry=0x2116c10, _t1=false) at .moc/release-shared/moc_qaction.cpp:276
#17 0x00007fb62b9c0433 in QAction::activate (this=this@entry=0x2116c10, event=event@entry=QAction::Trigger) at kernel/qaction.cpp:1257
#18 0x00007fb62bdee489 in QMenuPrivate::activateCausedStack (this=this@entry=0x20c09a0, causedStack=..., action=action@entry=0x2116c10, action_e=action_e@entry=QAction::Trigger, self=self@entry=true) at widgets/qmenu.cpp:1038
#19 0x00007fb62bdf29b9 in QMenuPrivate::activateAction (this=0x20c09a0, action=0x2116c10, action_e=action_e@entry=QAction::Trigger, self=self@entry=true) at widgets/qmenu.cpp:1130
#20 0x00007fb62bdf6385 in QMenu::mouseReleaseEvent (this=this@entry=0x20bfbc0, e=e@entry=0x7fff81e98670) at widgets/qmenu.cpp:2372
#21 0x00007fb62cee64f5 in KMenu::mouseReleaseEvent (this=0x20bfbc0, e=0x7fff81e98670) at ../../kdeui/widgets/kmenu.cpp:464
#22 0x00007fb62ba1450a in QWidget::event (this=this@entry=0x20bfbc0, event=event@entry=0x7fff81e98670) at kernel/qwidget.cpp:8376
#23 0x00007fb62bdf67bb in QMenu::event (this=0x20bfbc0, e=0x7fff81e98670) at widgets/qmenu.cpp:2481
#24 0x00007fb62b9c4e2c in QApplicationPrivate::notify_helper (this=this@entry=0x1a06420, receiver=receiver@entry=0x20bfbc0, e=e@entry=0x7fff81e98670) at kernel/qapplication.cpp:4567
#25 0x00007fb62b9cb5dd in QApplication::notify (this=this@entry=0x7fff81e98f60, receiver=receiver@entry=0x20bfbc0, e=e@entry=0x7fff81e98670) at kernel/qapplication.cpp:4110
#26 0x00007fb62ce2fbaa in KApplication::notify (this=0x7fff81e98f60, receiver=0x20bfbc0, event=0x7fff81e98670) at ../../kdeui/kernel/kapplication.cpp:311
#27 0x00007fb62c62b4dd in QCoreApplication::notifyInternal (this=0x7fff81e98f60, receiver=receiver@entry=0x20bfbc0, event=event@entry=0x7fff81e98670) at kernel/qcoreapplication.cpp:953
#28 0x00007fb62b9cad93 in sendEvent (event=<optimized out>, receiver=<optimized out>) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:231
#29 QApplicationPrivate::sendMouseEvent (receiver=receiver@entry=0x20bfbc0, event=event@entry=0x7fff81e98670, alienWidget=alienWidget@entry=0x0, nativeWidget=nativeWidget@entry=0x20bfbc0, buttonDown=buttonDown@entry=0x7fb62c4aa318 <qt_button_down>, lastMouseReceiver=..., spontaneous=spontaneous@entry=true) at kernel/qapplication.cpp:3178
#30 0x00007fb62ba3fcfc in QETWidget::translateMouseEvent (this=this@entry=0x20bfbc0, event=event@entry=0x7fff81e989c0) at kernel/qapplication_x11.cpp:4568
#31 0x00007fb62ba3f269 in QApplication::x11ProcessEvent (this=0x7fff81e98f60, event=event@entry=0x7fff81e989c0) at kernel/qapplication_x11.cpp:3627
#32 0x00007fb62ba66b02 in x11EventSourceDispatch (s=0x19f9a10, callback=0x0, user_data=0x0) at kernel/qguieventdispatcher_glib.cpp:146
#33 0x00007fb6255e3e04 in g_main_context_dispatch () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#34 0x00007fb6255e4048 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#35 0x00007fb6255e40ec in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#36 0x00007fb62c6587a1 in QEventDispatcherGlib::processEvents (this=0x1963e50, flags=...) at kernel/qeventdispatcher_glib.cpp:434
#37 0x00007fb62ba66bb6 in QGuiEventDispatcherGlib::processEvents (this=<optimized out>, flags=...) at kernel/qguieventdispatcher_glib.cpp:204
#38 0x00007fb62c62a0af in QEventLoop::processEvents (this=this@entry=0x7fff81e98d90, flags=...) at kernel/qeventloop.cpp:149
#39 0x00007fb62c62a3a5 in QEventLoop::exec (this=this@entry=0x7fff81e98d90, flags=...) at kernel/qeventloop.cpp:204
#40 0x00007fb62c62fb79 in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1225
#41 0x00007fb62b9c337c in QApplication::exec () at kernel/qapplication.cpp:3828
#42 0x0000000000410767 in main (argc=<optimized out>, argv=<optimized out>) at ../../app/main.cpp:566

Possible duplicates by query: bug 331227.

Reported using DrKonqi