Bug #53153 [NEW]: Memory leak with phpinfo() + output buffering + zlib compression

From: Date: Mon, 25 Oct 2010 17:25:48 +0000
Subject: Bug #53153 [NEW]: Memory leak with phpinfo() + output buffering + zlib compression
Groups: php.bugs 
Request: Send a blank email to php-bugs+get-155503@lists.php.net to get a copy of this message
From:             cataphract
Operating system: Windows 7 x64
PHP version:      trunk-SVN-2010-10-25 (SVN)
Package:          Output Control
Bug Type:         Bug
Bug description:Memory leak with phpinfo() + output buffering + zlib compression

Description:
------------
There is a memory leak on memory allocated on \main\output.c(809):

		if ((handler->buffer.size - handler->buffer.used) <= buf->used) {
			size_t grow_int = PHP_OUTPUT_HANDLER_INITBUF_SIZE(handler->size);
			size_t grow_buf = PHP_OUTPUT_HANDLER_INITBUF_SIZE(buf->used -
(handler->buffer.size - handler->buffer.used));
			size_t grow_max = MAX(grow_int, grow_buf);
			
			handler->buffer.data = erealloc(handler->buffer.data,
handler->buffer.size + grow_max); /* memory was allocated here */
			handler->buffer.size += grow_max;
		}



phpinfo() code:

	/* Andale!  Andale!  Yee-Hah! */
	php_output_start_default(TSRMLS_C);
	php_print_info(flag TSRMLS_CC);
	php_output_end(TSRMLS_C);

Test script:
---------------
File file.php
---
<?php
phpinfo();

(only the non disablable modules are loaded)

php-cgi -dzlib.output_compression=1 -doutput_buffering=10K file.php


-- 
Edit bug report at http://bugs.php.net/bug.php?id=53153&edit=1
-- 
Try a snapshot (PHP 5.2):            http://bugs.php.net/fix.php?id=53153&r=trysnapshot52
Try a snapshot (PHP 5.3):            http://bugs.php.net/fix.php?id=53153&r=trysnapshot53
Try a snapshot (trunk):              http://bugs.php.net/fix.php?id=53153&r=trysnapshottrunk
Fixed in SVN:                        http://bugs.php.net/fix.php?id=53153&r=fixed
Fixed in SVN and need be documented: http://bugs.php.net/fix.php?id=53153&r=needdocs
Fixed in release:                    http://bugs.php.net/fix.php?id=53153&r=alreadyfixed
Need backtrace:                      http://bugs.php.net/fix.php?id=53153&r=needtrace
Need Reproduce Script:               http://bugs.php.net/fix.php?id=53153&r=needscript
Try newer version:                   http://bugs.php.net/fix.php?id=53153&r=oldversion
Not developer issue:                 http://bugs.php.net/fix.php?id=53153&r=support
Expected behavior:                   http://bugs.php.net/fix.php?id=53153&r=notwrong
Not enough info:                     http://bugs.php.net/fix.php?id=53153&r=notenoughinfo
Submitted twice:                     http://bugs.php.net/fix.php?id=53153&r=submittedtwice
register_globals:                    http://bugs.php.net/fix.php?id=53153&r=globals
PHP 4 support discontinued:          http://bugs.php.net/fix.php?id=53153&r=php4
Daylight Savings:                    http://bugs.php.net/fix.php?id=53153&r=dst
IIS Stability:                       http://bugs.php.net/fix.php?id=53153&r=isapi
Install GNU Sed:                     http://bugs.php.net/fix.php?id=53153&r=gnused
Floating point limitations:          http://bugs.php.net/fix.php?id=53153&r=float
No Zend Extensions:                  http://bugs.php.net/fix.php?id=53153&r=nozend
MySQL Configuration Error:           http://bugs.php.net/fix.php?id=53153&r=mysqlcfg



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