#0  0x00007fa81adecf50 in _XReply () from /usr/lib/libX11.so.6
#1  0x00007fa81adca246 in XGetWindowProperty () from /usr/lib/libX11.so.6
#2  0x00007fa81adc8fb1 in XGetClassHint () from /usr/lib/libX11.so.6
#3  0x0000000000414fb3 in defaults_get_top_corner ()
#4  0x000000000041826c in ?? ()
#5  0x0000000000418bf1 in stack_notify_handler ()
#6  0x0000000000417c6c in dbus_glib_marshal_stack_VOID__STRING_UINT_STRING_STRING_STRING_BOXED_BOXED_INT_POINTER ()
#7  0x00007fa81d64012b in ?? () from /usr/lib/libdbus-glib-1.so.2
#8  0x00007fa81d412081 in ?? () from /lib/libdbus-1.so.3
#9  0x00007fa81d404966 in dbus_connection_dispatch () from /lib/libdbus-1.so.3
#10 0x00007fa81d63cb55 in ?? () from /usr/lib/libdbus-glib-1.so.2
#11 0x00007fa81b6720ca in IA__g_main_context_dispatch (context=0x1e462f0)
    at /build/buildd/glib2.0-2.20.0/glib/gmain.c:1814
No locals.
#12 0x00007fa81b6757a0 in g_main_context_iterate (context=0x1e462f0, block=1, 
    dispatch=1, self=<value optimized out>)
    at /build/buildd/glib2.0-2.20.0/glib/gmain.c:2448
	max_priority = 0
	timeout = 0
	some_ready = 1
	nfds = 7
	allocated_nfds = <value optimized out>
	fds = (GPollFD *) 0x1efe160
	__PRETTY_FUNCTION__ = "g_main_context_iterate"
#13 0x00007fa81b675c6d in IA__g_main_loop_run (loop=0x1efe1a0)
    at /build/buildd/glib2.0-2.20.0/glib/gmain.c:2656
	self = (GThread *) 0x1e044d0
	__PRETTY_FUNCTION__ = "IA__g_main_loop_run"
#14 0x00007fa81cf309f7 in IA__gtk_main ()
    at /build/buildd/gtk+2.0-2.16.0/gtk/gtkmain.c:1205
	tmp_list = (GList *) 0x1ecd4c0
	functions = (GList *) 0x0
	init = (GtkInitFunction *) 0x1e8d128
	loop = <value optimized out>
#15 0x0000000000417470 in main ()