From 5a16f354fd03f291a3606849fd68ee41bc9e0092 Mon Sep 17 00:00:00 2001
From: mbr <mbr@FreeBSD.org>
Date: Mon, 27 Jan 2003 22:36:53 +0000
Subject: Make sure we don't look before the beginning of the string.

NetBSD Rev 1.5

Reviewed by:		phk
Obtained from:		NetBSD
---
 lib/libc/rpc/getnetpath.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

(limited to 'lib/libc')

diff --git a/lib/libc/rpc/getnetpath.c b/lib/libc/rpc/getnetpath.c
index 087cb30..474d3e0 100644
--- a/lib/libc/rpc/getnetpath.c
+++ b/lib/libc/rpc/getnetpath.c
@@ -249,9 +249,9 @@ int token;		/* char to parse string for */
     /*
      * did find a token, but it might be escaped.
      */
-    if (cp[-1] == '\\') {
+    if ((cp > npp) && (cp[-1] == '\\')) {
         /* if slash was also escaped, carry on, otherwise find next token */
-        if (cp[-2] != '\\') {
+	if ((cp > npp + 1) && (cp[-2] != '\\')) {
 	    /* shift r-o-s  onto the escaped token */
 	    strcpy(&cp[-1], cp);    /* XXX: overlapping string copy */
 	    /*
-- 
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