-void *BKE_lamp_add(const char *name);
-struct Lamp *BKE_lamp_copy(struct Lamp *la);
-struct Lamp *localize_lamp(struct Lamp *la);
+struct Lamp *BKE_lamp_add(const char *name) WARN_UNUSED;
+struct Lamp *BKE_lamp_copy(struct Lamp *la) WARN_UNUSED;
+struct Lamp *localize_lamp(struct Lamp *la) WARN_UNUSED;