#0  type_node_check_conformities_UorL (have_lock=0, support_prerequisites=0, support_interfaces=0, iface_node=0x2d6e150, node=0x23bf000) at /build/buildd/glib2.0-2.41.3+git20140829.a78443a1/./gobject/gtype.c:3435
No locals.
#1  type_node_conforms_to_U (support_prerequisites=0, support_interfaces=0, iface_node=0x2d6e150, node=0x23bf000) at /build/buildd/glib2.0-2.41.3+git20140829.a78443a1/./gobject/gtype.c:3481
No locals.
#2  g_type_check_class_cast (type_class=0x28262d0, is_a_type=35647408) at /build/buildd/glib2.0-2.41.3+git20140829.a78443a1/./gobject/gtype.c:4049
        is_classed = 0
        check = <optimized out>
#3  0x00000000028262d0 in ?? ()
No symbol table info available.
#4  0x0000000000000000 in ?? ()
No symbol table info available.