Program received signal SIGSEGV, Segmentation fault. [Switching to Thread 47462694713072 (LWP 14082)] 0x00002b2ac34d66d0 in strlen () from /lib64/libc.so.6 (gdb) bt #0 0x00002b2ac34d66d0 in strlen () from /lib64/libc.so.6 #1 0x00002b2ac2c212e2 in XSetCommand (dpy=0xd32070, w=75497474, argv=0xffffffffffffffff, argc=-16843009) at SetHints.c:197 #2 0x00002b2ac2c2fb49 in XSetWMProperties (dpy=0xd32070, w=75497474, windowName=0x0, iconName=0x0, argv=0x7fffeb055ca8, argc=11050, sizeHints=0x0, wmHints=0x0, classHints=0x0) at WMProps.c:103 #3 0x00002b2ac0e01c29 in QApplicationPrivate::applyX11SpecificCommandLineArguments (main_widget=0xdab1c0) at kernel/qapplication_x11.cpp:2158 #4 0x00002b2ac0df6786 in QWidget::setVisible (this=0xdab1c0, visible=) at kernel/qwidget.cpp:4464 #5 0x0000000000493d9f in QWidget::show (this=0xdab1c0) at /usr/include/QtGui/qwidget.h:401 #6 0x0000000000492b4d in QtWengoPhone::initThreadSafe (this=0xd85040) at wengophone/src/presentation/qt/QtWengoPhone.cpp:342 #7 0x0000000000496228 in boost::_mfi::mf0::operator() (this=0xda9b80, p=0xd85040) at /usr/include/boost/bind/mem_fn_template.hpp:45 #8 0x00000000004963cd in boost::_bi::list1 >::operator(), boost::_bi::list0> (this=0xda9b90, f=@0xda9b80, a=@0x7fffeb05529e) at /usr/include/boost/bind.hpp:230 #9 0x000000000049640a in boost::_bi::bind_t, boost::_bi::list1 > >::operator() (this=0xda9b80) at /usr/include/boost/bind/bind_template.hpp:20 #10 0x0000000000496429 in boost::detail::function::void_function_obj_invoker0, boost::_bi::list1 > >, void>::invoke (function_obj_ptr= {obj_ptr = 0xda9b80, const_obj_ptr = 0xda9b80, func_ptr = 0xda9b80, data = "\200"}) at /usr/include/boost/function/function_template.hpp:136 #11 0x0000000000497ee2 in boost::function0 >::operator() (this=0xda99e8) at /usr/include/boost/function/function_template.hpp:576 #12 0x0000000000497f03 in PostEvent0::callback (this=0xda99d0) at libs/qtutil/include/qtutil/PostEvent.h:68 #13 0x000000000075b726 in QObjectThreadSafe::event (this=0xd85040, event=0xda99d0) at libs/qtutil/src/QObjectThreadSafe.cpp:46 #14 0x00002b2ac0dba863 in QApplicationPrivate::notify_helper (this=, receiver=0xd85040, e=0xda99d0) at kernel/qapplication.cpp:3175 #15 0x00002b2ac0dbbb57 in QApplication::notify (this=0xd0f880, receiver=0xd85040, e=0xda99d0) at kernel/qapplication.cpp:3136 #16 0x00002b2ac0a985e8 in QCoreApplication::sendPostedEvents (receiver=0x0, event_type=0) at kernel/qcoreapplication.h:173 #17 0x00002b2ac0e19ebd in QEventDispatcherX11::processEvents (this=0xd29540, flags=@0x7fffeb055830) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:178 #18 0x00002b2ac0a96aaf in QCoreApplication::processEvents (flags=@0x7fffeb055860) at kernel/qcoreapplication.cpp:614 #19 0x000000000048b829 in QtFactory::processEvents (this=0xd1f820) at wengophone/src/presentation/qt/QtFactory.h:78 #20 0x000000000048b164 in main (argc=1, argv=0x7fffeb055ca8) at wengophone/src/presentation/main.cpp:119 (gdb) f 3 #3 0x00002b2ac0e01c29 in QApplicationPrivate::applyX11SpecificCommandLineArguments (main_widget=0xdab1c0) at kernel/qapplication_x11.cpp:2158 2158 XSetWMProperties(X11->display, main_widget->winId(), 0, 0, qApp->d_func()->argv, qApp->d_func()->argc, 0, 0, 0); (gdb) list 2153 { 2154 static bool beenHereDoneThat = false; 2155 if (beenHereDoneThat) 2156 return; 2157 beenHereDoneThat = true; 2158 XSetWMProperties(X11->display, main_widget->winId(), 0, 0, qApp->d_func()->argv, qApp->d_func()->argc, 0, 0, 0); 2159 if (mwTitle) { 2160 XStoreName(X11->display, main_widget->winId(), (char*)mwTitle); 2161 QByteArray net_wm_name = QString::fromLocal8Bit(mwTitle).toUtf8(); 2162 XChangeProperty(X11->display, main_widget->winId(), ATOM(_NET_WM_NAME), ATOM(UTF8_STRING), 8, (gdb) p qApp->d_func()->argc No symbol "qApp" in current context.