From: Shane Caraveo <shane@php.net>
Date: Sun, 27 Oct 2002 23:34:48 +0000 (+0000)
Subject: dont memmove a null pointer.  caught by bounds checker.
X-Git-Tag: php-4.3.0RC1~506
X-Git-Url: https://granicus.if.org/sourcecode?a=commitdiff_plain;h=5ef76f67079b37ed3491f3f9fe502df4719c52c8;p=php

dont memmove a null pointer.  caught by bounds checker.
---

diff --git a/main/streams.c b/main/streams.c
index 77b80353ff..cbbdba1124 100755
--- a/main/streams.c
+++ b/main/streams.c
@@ -469,7 +469,7 @@ static void php_stream_fill_read_buffer(php_stream *stream, size_t size TSRMLS_D
 		/* no; so lets fetch more data */
 		
 		/* reduce buffer memory consumption if possible, to avoid a realloc */
-		if (stream->readbuflen - stream->writepos < stream->chunk_size) {
+		if (stream->readbuf && stream->readbuflen - stream->writepos < stream->chunk_size) {
 			memmove(stream->readbuf, stream->readbuf + stream->readpos, stream->readbuflen - stream->readpos);
 			stream->writepos -= stream->readpos;
 			stream->readpos = 0;