--- libelwix/example/test_iovec.c	2021/03/19 01:29:24	1.1.2.1
+++ libelwix/example/test_iovec.c	2021/03/19 03:01:52	1.1.2.2
@@ -48,6 +48,11 @@ main(int argc, char **argv)
 	printf("iov_PushPair at %d\n", iov_PushPair(iov, "pair1", "o!o", (size_t) -1));
 	printf("iov_PopPair without get data at %d\n", iov_PopPair(iov, NULL, NULL, NULL, NULL, 0));
 
+	iov_Delete(iov, 0, 0);
+	iov_Delete(iov, 1, 0);
+
+	printf("+iov_PopPair without get data at %d\n", iov_PopPair(iov, NULL, NULL, NULL, NULL, 0));
+
 	iov_Debug(iov);
 
 	iov_Destroy(&iov);