From: Ilia Alshanetsky <iliaa@php.net>
Date: Wed, 19 May 2004 20:34:01 +0000 (+0000)
Subject: Prevent possible crash when working with column containing NULL.
X-Git-Tag: RELEASE_0_1~94
X-Git-Url: https://granicus.if.org/sourcecode?a=commitdiff_plain;h=56abe4de4ab0813509a022f42c0ddedeaddeaea3;p=php

Prevent possible crash when working with column containing NULL.
---

diff --git a/ext/pdo_mysql/mysql_statement.c b/ext/pdo_mysql/mysql_statement.c
index 6f8d70a06a..f8e1b3d097 100755
--- a/ext/pdo_mysql/mysql_statement.c
+++ b/ext/pdo_mysql/mysql_statement.c
@@ -139,7 +139,9 @@ static int mysql_stmt_get_col(pdo_stmt_t *stmt, int colno, char **ptr, unsigned
 		pdo_mysql_error(S->H);
 		return 0;
 	}
-	*ptr = estrndup(S->current_data[colno], S->current_lengths[colno] +1);
+	if (S->current_data[colno]) {
+		*ptr = estrndup(S->current_data[colno], S->current_lengths[colno] +1);
+	}
 	*len = S->current_lengths[colno];
 	return 1;
 }