libvlc_media_list_player_set_media_list (mlp, ml);
libvlc_event_manager_t * em = libvlc_media_list_player_event_manager(mlp);
- libvlc_event_attach(em, libvlc_MediaListPlayerNextItemSet, check_items_order_callback, &check, &ex);
- catch ();
+ int val = libvlc_event_attach(em, libvlc_MediaListPlayerNextItemSet,
+ check_items_order_callback, &check);
+ assert(val == 0);
libvlc_media_list_player_play(mlp, &ex);
catch ();