From: Mark Whitley <markw@lineo.com>
Date: Mon, 23 Apr 2001 17:04:41 +0000 (-0000)
Subject: Added a sanity check to fix weird bug exposed when sourcing in commands from a
X-Git-Tag: 0_52~312
X-Git-Url: https://git.librecmc.org/?a=commitdiff_plain;h=4b66dabc76a89a10e4ff07318ff88e3501a4bba5;p=oweals%2Fbusybox.git

Added a sanity check to fix weird bug exposed when sourcing in commands from a
file with lash. Based on report from Heinz Walter.
---

diff --git a/libbb/trim.c b/libbb/trim.c
index 78cf235dd..d3be62d93 100644
--- a/libbb/trim.c
+++ b/libbb/trim.c
@@ -33,7 +33,11 @@
 
 void trim(char *s)
 {
-	int len=strlen(s);
+	int len = strlen(s);
+
+	/* sanity check */
+	if (len == 0)
+		return;
 
 	/* trim trailing whitespace */
 	while ( len > 0 && isspace(s[len-1]))