--- libaitrpc/src/builtin.c	2011/09/07 00:30:04	1.3.2.9
+++ libaitrpc/src/builtin.c	2011/09/07 07:24:21	1.4
@@ -3,7 +3,7 @@
 *  by Michael Pounov <misho@openbsd-bg.org>
 *
 * $Author: misho $
-* $Id: builtin.c,v 1.3.2.9 2011/09/07 00:30:04 misho Exp $
+* $Id: builtin.c,v 1.4 2011/09/07 07:24:21 misho Exp $
 *
 **************************************************************************
 The ELWIX and AITNET software is distributed under the following
@@ -244,6 +244,12 @@ rpcBLOBServerVars(rpc_func_t *call, int ic, array_t *i
 	for (i = 0, b = srv->srv_blob.blobs; b; i++, b = b->blob_next);
 	len = i * sizeof str;
 
+	if (!len) {
+		AIT_SET_STR(io_array(vals, 0, ait_val_t*), "");
+		pthread_mutex_unlock(&srv->srv_blob.mtx);
+		return 0;
+	}
+
 	if (!(val = malloc(len))) {
 		LOGERR;
 		pthread_mutex_unlock(&srv->srv_blob.mtx);
@@ -253,7 +259,7 @@ rpcBLOBServerVars(rpc_func_t *call, int ic, array_t *i
 
 	for (b = srv->srv_blob.blobs, i = 0; b; i++, b = b->blob_next) {
 		memset(str, 0, sizeof str);
-		snprintf(str, sizeof str, "0x%0X(%lu)=%p ", b->blob_var, b->blob_len, b->blob_data);
+		snprintf(str, sizeof str, "0x%0X(%lu)=%p ", b->blob_var, (u_long) b->blob_len, b->blob_data);
 		strlcat(val, str, len);
 	}