From: Andrey Hristov <andrey@php.net>
Date: Thu, 11 Jun 2009 08:32:34 +0000 (+0000)
Subject: Check the pointer before calling a function on it, or we will crash.
X-Git-Tag: php-5.4.0alpha1~191^2~3360
X-Git-Url: https://granicus.if.org/sourcecode?a=commitdiff_plain;h=6f90ebd669f7a361a6ffa0df6a5b8724397dce04;p=php

Check the pointer before calling a function on it, or we will crash.
This is a very rare situation where the server is totally broken.
---

diff --git a/ext/mysqlnd/mysqlnd_wireprotocol.c b/ext/mysqlnd/mysqlnd_wireprotocol.c
index 2924827e9c..bec4fde410 100644
--- a/ext/mysqlnd/mysqlnd_wireprotocol.c
+++ b/ext/mysqlnd/mysqlnd_wireprotocol.c
@@ -1344,7 +1344,7 @@ php_mysqlnd_read_row_ex(MYSQLND *conn, MYSQLND_MEMORY_POOL_CHUNK **buffer,
 			break;
 		}
 	}
-	if (ret == FAIL) {
+	if (ret == FAIL && (*buffer)) {
 		(*buffer)->free_chunk((*buffer), TRUE TSRMLS_CC);
 		*buffer = NULL;
 	}