From: Ilia Alshanetsky <iliaa@php.net>
Date: Tue, 13 Feb 2007 23:55:20 +0000 (+0000)
Subject: Make sure p is not pointing to the start of the buffer
X-Git-Tag: php-5.2.2RC1~404
X-Git-Url: https://granicus.if.org/sourcecode?a=commitdiff_plain;h=fc49f98e6a9ecc593e49258902749be805d320b2;p=php

Make sure p is not pointing to the start of the buffer
---

diff --git a/ext/standard/string.c b/ext/standard/string.c
index 335cb64d5c..355792778b 100644
--- a/ext/standard/string.c
+++ b/ext/standard/string.c
@@ -4263,7 +4263,7 @@ PHPAPI size_t php_strip_tags_ex(char *rbuf, int len, int *stateptr, char *allow,
 					tp = ((tp-tbuf) >= PHP_TAG_BUF_SIZE ? tbuf: tp);
 					*(tp++) = c;
 				}
-				if (*(p-1) != '\\') {
+				if (p != buf && *(p-1) != '\\') {
 					in_q = !in_q;
 				}
 				break;