From a5f637460ba2d8ced2cacdac6d30dfb0e03da1d4 Mon Sep 17 00:00:00 2001
From: Don Lewis <truckman@FreeBSD.org>
Date: Fri, 13 May 2016 00:58:05 +0000
Subject: [PATCH] Avoid indexing an array with a negative value.

Reported by:	Coverity
CID:		971121
---
 usr.sbin/ypldap/ber.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/usr.sbin/ypldap/ber.c b/usr.sbin/ypldap/ber.c
index f73ecef8664..d3882333697 100644
--- a/usr.sbin/ypldap/ber.c
+++ b/usr.sbin/ypldap/ber.c
@@ -726,7 +726,7 @@ ber_scanf_elements(struct ber_element *ber, char *fmt, ...)
 			continue;
 		case '}':
 		case ')':
-			if (parent[level] == NULL)
+			if (level < 0 || parent[level] == NULL)
 				goto fail;
 			ber = parent[level--];
 			ret++;