--- libelwix/src/vars.c	2015/06/25 17:53:50	1.8
+++ libelwix/src/vars.c	2016/05/18 12:47:42	1.9
@@ -3,7 +3,7 @@
 *  by Michael Pounov <misho@elwix.org>
 *
 * $Author: misho $
-* $Id: vars.c,v 1.8 2015/06/25 17:53:50 misho Exp $
+* $Id: vars.c,v 1.9 2016/05/18 12:47:42 misho Exp $
 *
 **************************************************************************
 The ELWIX and AITNET software is distributed under the following
@@ -794,23 +794,21 @@ ait_sprintfVar(ait_val_t * __restrict v, const char *f
 {
 	int ret = 0;
 	va_list lst;
-	char *str = NULL;
+	char str[STRSIZ] = { [0 ... STRSIZ - 1] = 0 };
 
 	if (!v || !fmt)
 		return -1;
 
 	va_start(lst, fmt);
-	ret = vasprintf(&str, fmt, lst);
+	ret = vsnprintf(str, sizeof str - 1, fmt, lst);
 	va_end(lst);
 
-	if (str && ret > -1) {
+	if (ret > -1) {
 		AIT_FREE_VAL(v);
 		AIT_SET_STR(v, str);
 	} else
 		LOGERR;
 
-	if (str)
-		free(str);
 	return ret;
 }