Bug #54083 [Ver]: Lazy match doesn't match more than 99997 characters

From: Date: Thu, 24 Feb 2011 12:24:15 +0000
Subject: Bug #54083 [Ver]: Lazy match doesn't match more than 99997 characters
References: 1  Groups: php.bugs 
Request: Send a blank email to php-bugs+get-158999@lists.php.net to get a copy of this message 
Edit report at http://bugs.php.net/bug.php?id=54083&edit=1

 ID:                 54083
 Updated by:         aharvey@php.net
 Reported by:        zequez at gmail dot com
 Summary:            Lazy match doesn't match more than 99997 characters
 Status:             Verified
 Type:               Bug
-Package:            Regexps related
+Package:            PCRE related
 Operating System:   Windows 7
 PHP Version:        5.3.5
 Block user comment: N
 Private report:     N

 New Comment:

Verified on Linux.


Previous Comments:
------------------------------------------------------------------------
[2011-02-24 13:24:06] aharvey@php.net

Verified on Linux.

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[2011-02-24 04:38:33] zequez at gmail dot com

Sorry the misspell, it's lazy, not greedy.

------------------------------------------------------------------------
[2011-02-24 01:26:45] zequez at gmail dot com

Didn't tested in other operative systems...

------------------------------------------------------------------------
[2011-02-24 01:24:01] zequez at gmail dot com

Description:
------------
Greedy match doesn't match more than 99997 characters. If you try to
greedy match 
more than 99997 characters it matches nothing.

Test script:
---------------
// 99997 string length
$contents = '';
for ($i = 0; $i < 99997; ++$i) {
	$contents .= "a";
}

preg_match('/^a*?$/', $contents, $match);
var_dump($match);

// 99998 string length
$contents = '';
for ($i = 0; $i < 99998; ++$i) {
	$contents .= "a";
}

preg_match('/^a*?$/', $contents, $match);
var_dump($match);

Expected result:
----------------
To match the whole $contents content in both cases.

Actual result:
--------------
The first case match the whole $contents content, but in the second one
it match 
nothing.


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