From: Wez Furlong <wez@php.net>
Date: Wed, 12 May 2004 10:46:30 +0000 (+0000)
Subject: Avoid Bug #28363 by not seeking if we don't have a read buffer
X-Git-Tag: php-4.3.7RC1~33
X-Git-Url: https://granicus.if.org/sourcecode?a=commitdiff_plain;h=efb6da662d00b3532757d4d966656495f3f4e3da;p=php

Avoid Bug #28363 by not seeking if we don't have a read buffer
---

diff --git a/main/streams.c b/main/streams.c
index 52e14ac5b2..14d0bc827e 100755
--- a/main/streams.c
+++ b/main/streams.c
@@ -896,7 +896,7 @@ PHPAPI size_t _php_stream_write(php_stream *stream, const char *buf, size_t coun
 	/* if we have a seekable stream we need to ensure that data is written at the
 	 * current stream->position. This means invalidating the read buffer and then
 	 * performing a low-level seek */
-	if (stream->ops->seek && (stream->flags & PHP_STREAM_FLAG_NO_SEEK) == 0) {
+	if (stream->ops->seek && (stream->flags & PHP_STREAM_FLAG_NO_SEEK) == 0 && stream->writepos > stream->readpos) {
 		stream->readpos = stream->writepos = 0;
 
 		stream->ops->seek(stream, stream->position, SEEK_SET, &stream->position TSRMLS_CC);