From: Stanislav Malyshev <stas@php.net>
Date: Tue, 20 Jan 2015 19:46:10 +0000 (-0800)
Subject: add protection against nulls
X-Git-Tag: php-5.5.21~3
X-Git-Url: https://granicus.if.org/sourcecode?a=commitdiff_plain;h=7ce410b28d37bbabcbd3129e2ec4e6bd31b62dd0;p=php

add protection against nulls
---

diff --git a/main/spprintf.c b/main/spprintf.c
index ff8e9643de..5956523284 100644
--- a/main/spprintf.c
+++ b/main/spprintf.c
@@ -813,6 +813,11 @@ PHPAPI int vspprintf(char **pbuf, size_t max_len, const char *format, va_list ap
 {
 	smart_str xbuf = {0};
 
+	/* since there are places where (v)spprintf called without checking for null,
+	   a bit of defensive coding here */
+	if(!pbuf) {
+		return 0;
+	}
 	xbuf_format_converter(&xbuf, format, ap);
 
 	if (max_len && xbuf.len > max_len) {