Index: query_exec.c
===================================================================
--- query_exec.c	(revision 33063)
+++ query_exec.c	(revision 33064)
@@ -872,6 +872,9 @@
 		case PCBQ_RNAME:
 		case PCBQ_DATA_LYTC:
 		case PCBQ_ITER_CTX:
+		case PCBQ_FUNCTION:
+		case PCBQ_RETURN:
+		case PCBQ_ARG:
 			return -1;
 	}
 	return -1;