source = (GstBusSource *) g_source_new (&gst_bus_source_funcs,
sizeof (GstBusSource));
-#if GLIB_CHECK_VERSION(2,26,0)
g_source_set_name ((GSource *) source, "GStreamer message bus watch");
-#endif
source->bus = gst_object_ref (bus);
g_source_add_poll ((GSource *) source, &bus->priv->pollfd);