lookup_iface_entry_I (iface_node=0x8d4df18, entries=0x1) at /build/buildd/glib2.0-2.32.0/./gobject/gtype.c:564
type_lookup_iface_vtable_I (vtable_ptr=0x0, iface_node=0x8d4df18, node=0x9195c40) at /build/buildd/glib2.0-2.32.0/./gobject/gtype.c:619
type_lookup_iface_vtable_I (vtable_ptr=0x0, iface_node=0x8d4df18, node=0x9195c40) at /build/buildd/glib2.0-2.32.0/./gobject/gtype.c:3955
type_node_check_conformities_UorL (have_lock=0, support_prerequisites=0, support_interfaces=1, iface_node=0x8d4df18, node=0x9195c40) at /build/buildd/glib2.0-2.32.0/./gobject/gtype.c:3450
type_node_conforms_to_U (support_prerequisites=0, support_interfaces=1, iface_node=0x8d4df18, node=0x9195c40) at /build/buildd/glib2.0-2.32.0/./gobject/gtype.c:3480