From fa727cd22f6df7ac3c8b9fc67a3dbe58593788bd Mon Sep 17 00:00:00 2001
From: vapier <vapier@69ca8d6d-28ef-0310-b511-8ec308f3f277>
Date: Sat, 30 Dec 2006 19:30:20 +0000
Subject: prevent buffer underflows with empty lines

git-svn-id: svn://busybox.net/trunk/busybox@17108 69ca8d6d-28ef-0310-b511-8ec308f3f277
---
 scripts/kconfig/conf.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/scripts/kconfig/conf.c b/scripts/kconfig/conf.c
index a95ba93e2..ca722b05d 100644
--- a/scripts/kconfig/conf.c
+++ b/scripts/kconfig/conf.c
@@ -390,7 +390,7 @@ static int conf_choice(struct menu *menu)
 		}
 		if (!child)
 			continue;
-		if (line[strlen(line) - 1] == '?') {
+		if (strlen(line) > 0 && line[strlen(line) - 1] == '?') {
 			printf("\n%s\n", child->sym->help ?
 				child->sym->help : nohelp_text);
 			continue;
-- 
cgit v1.2.3-55-g6feb