$ gdb semantik GNU gdb (GDB) 7.1-ubuntu ... This GDB was configured as "i486-linux-gnu". ... Reading symbols from /usr/bin/semantik...Reading symbols from /usr/lib/debug/usr/bin/semantik...(no debugging symbols found)...done. (no debugging symbols found)...done. (gdb) run Starting program: /usr/bin/semantik [Thread debugging using libthread_db enabled] QInotifyFileSystemWatcherEngine::addPaths: inotify_add_watch failed: No such file or directory [New Thread 0xb5a9ab70 (LWP 17313)] QFileSystemWatcher: failed to add paths: /home/a_user/.config/ibus/bus Bus::open: Can not get ibus-daemon's address. IBusInputContext::createInputContext: no connection to ibus-daemon semantik(17310)/kdeui (kdelibs): Attempt to use QAction "show_dock_data" with KXMLGUIFactory! semantik(17310)/kdeui (kdelibs): Attempt to use QAction "show_dock_vars" with KXMLGUIFactory! semantik(17310)/kdeui (kdelibs): Attempt to use QAction "show_dock_preview" with KXMLGUIFactory! semantik(17310)/kdeui (kdelibs): Attempt to use QAction "show_dock_linear" with KXMLGUIFactory! semantik(17310)/kdecore (services) KMimeTypeFactory::parseMagic: Now parsing "/usr/share/mime/magic" semantik(17310)/kdecore (services) KMimeTypeFactory::parseMagic: Now parsing "/home/a_user/.local/share/mime/magic" Program received signal SIGSEGV, Segmentation fault. QTreeWidget::setItemSelected (this=0x1, item=0x864af88, select=true) at itemviews/qtreewidget.cpp:3021 3021 itemviews/qtreewidget.cpp: No such file or directory. in itemviews/qtreewidget.cpp (gdb) backtrace all #0 QTreeWidget::setItemSelected (this=0x1, item=0x864af88, select=true) at itemviews/qtreewidget.cpp:3021 #1 0x08066c66 in egykl::kivalt(QHash const&) () #2 0x08076990 in egytr::qt_metacall(QMetaObject::Call, int, void**) () #3 0x01e62c9a in QMetaObject::metacall (object=0x83191a8, cl=QMetaObject::WriteProperty, idx=27, argv=0xbfffe028) at kernel/qmetaobject.cpp:237 #4 0x01e713d5 in QMetaObject::activate (sender=0x81b1190, m=0x80deba4, local_signal_index=0, argv=0xbfffe028) at kernel/qobject.cpp:3293 #5 0x080881e5 in jelzpn::synchro(QHash const&) () #6 0x0809107c in jelzpn::korrkt(int, int) () #7 0x0807f65e in felu::muri(bool) () #8 0x0807f7bb in felu::lmzdul(rslt*, bool) () #9 0x08080403 in felu::mousePressEvent(QMouseEvent*) () #10 0x012e57dc in QWidget::event (this=0x81b1a08, event=0xbfffe970) at kernel/qwidget.cpp:7994 #11 0x016e1fd3 in QFrame::event (this=0x81b1a08, e=0xbfffe970) at widgets/qframe.cpp:557 #12 0x0177c382 in QAbstractScrollArea::viewportEvent (this=0x2, e=0x1) at widgets/qabstractscrollarea.cpp:1036 #13 0x0195206b in QGraphicsView::viewportEvent (this=0x81b1a08, event=0xbfffe970) at graphicsview/qgraphicsview.cpp:2787 #14 0x0177ec65 in QAbstractScrollAreaPrivate::viewportEvent (this=0x81c3688, o=0x8185110, e=0xbfffe970) at widgets/qabstractscrollarea_p.h:100 #15 QAbstractScrollAreaFilter::eventFilter (this=0x81c3688, o=0x8185110, e=0xbfffe970) at widgets/qabstractscrollarea_p.h:116 #16 0x01e5ccda in QCoreApplicationPrivate::sendThroughObjectEventFilters (this=0x812b188, receiver=0x8185110, event=0xbfffe970) at kernel/qcoreapplication.cpp:819 #17 0x012874b9 in QApplicationPrivate::notify_helper (this=0x812b188, receiver=0x8185110, e=0xbfffe970) at kernel/qapplication.cpp:4296 #18 0x0128e9f7 in QApplication::notify (this=0xbffff214, receiver=0x8185110, e=0xbfffe970) at kernel/qapplication.cpp:3865 #19 0x026ccf2a in KApplication::notify (this=0xbffff214, receiver=0x8185110, event=0xbfffe970) at ../../kdeui/kernel/kapplication.cpp:302 #20 0x01e5da3b in QCoreApplication::notifyInternal (this=0xbffff214, receiver=0x8185110, event=0xbfffe970) at kernel/qcoreapplication.cpp:704 #21 0x0128d952 in QCoreApplication::sendEvent (receiver=0x8185110, event=0xbfffe970, alienWidget=0x8185110, nativeWidget=0x81b1a08, buttonDown=0x1bcb058, lastMouseReceiver=..., spontaneous=true) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:215 #22 QApplicationPrivate::sendMouseEvent (receiver=0x8185110, event=0xbfffe970, alienWidget=0x8185110, nativeWidget=0x81b1a08, buttonDown=0x1bcb058, lastMouseReceiver=..., spontaneous=true) at kernel/qapplication.cpp:2965 #23 0x01319088 in QETWidget::translateMouseEvent (this=0x81b1a08, event=0xbfffee8c) at kernel/qapplication_x11.cpp:4368 #24 0x01318511 in QApplication::x11ProcessEvent (this=0xbffff214, event=0xbfffee8c) at kernel/qapplication_x11.cpp:3379 #25 0x0134760a in x11EventSourceDispatch (s=0x812e3a8, callback=0, user_data=0x0) at kernel/qguieventdispatcher_glib.cpp:146 #26 0x03a9b5e5 in g_main_dispatch (context=0x812d490) at /build/buildd/glib2.0-2.24.0/glib/gmain.c:1960 #27 IA__g_main_context_dispatch (context=0x812d490) at /build/buildd/glib2.0-2.24.0/glib/gmain.c:2513 #28 0x03a9f2d8 in g_main_context_iterate (context=0x812d490, block=, dispatch=1, self=0x812b3d0) at /build/buildd/glib2.0-2.24.0/glib/gmain.c:2591 #29 0x03a9f4b8 in IA__g_main_context_iteration (context=0x812d490, may_block=1) at /build/buildd/glib2.0-2.24.0/glib/gmain.c:2654 #30 0x01e895d5 in QEventDispatcherGlib::processEvents (this=0x810f2a8, flags=...) at kernel/qeventdispatcher_glib.cpp:412 #31 0x01347135 in QGuiEventDispatcherGlib::processEvents (this=0x810f2a8, flags=...) at kernel/qguieventdispatcher_glib.cpp:204 #32 0x01e5c059 in QEventLoop::processEvents (this=0xbffff184, flags=DWARF-2 expression error: DW_OP_reg operations must be used either alone or in conjuction with DW_OP_piece. ) at kernel/qeventloop.cpp:149 #33 0x01e5c4aa in QEventLoop::exec (this=0xbffff184, flags=...) at kernel/qeventloop.cpp:201 #34 0x01e6069f in QCoreApplication::exec () at kernel/qcoreapplication.cpp:981 #35 0x01287577 in QApplication::exec () at kernel/qapplication.cpp:3579 #36 0x0807a53d in main () (gdb)