-void bundle_parse(const char *, struct ofpbuf *ofpacts);
-void bundle_parse_load(const char *, struct ofpbuf *ofpacts);
+char *bundle_parse(const char *, struct ofpbuf *ofpacts) WARN_UNUSED_RESULT;
+char *bundle_parse_load(const char *, struct ofpbuf *ofpacts)
+ WARN_UNUSED_RESULT;