ID:               25798
 User updated by:  musha dot yoshinori at nifty dot ne dot jp
 Reported By:      musha dot yoshinori at nifty dot ne dot jp
-Status:           No Feedback
+Status:           Open
 Bug Type:         PCRE related
 Operating System: Windows XP Pro
 PHP Version:      4.3.3
 New Comment:

I am sorry for late. I was busy for business.

Now, I checked the bug using the latest version of PHP, 
PHP/4.3.4RC2-dev. As the result, I found that the bug appeared again. 

By the bug, I feel that it is difficult to describe regular expressions
avoiding the bug in preg_match. I want to describe regular expressions
more freely.

By the way, in the latest version, phpinfo() shows "Apache Version:
Apache/2.0.46 (Win32) PHP/4.3.4RC2-dev", but phpversion() shows
"4.3.3". Is it OK? 

Thank you.


Previous Comments:
------------------------------------------------------------------------

[2003-10-14 20:31:51] [EMAIL PROTECTED]

No feedback was provided. The bug is being suspended because
we assume that you are no longer experiencing the problem.
If this is not the case and you are able to provide the
information that was requested earlier, please do so and
change the status of the bug back to "Open". Thank you.



------------------------------------------------------------------------

[2003-10-10 11:50:21] [EMAIL PROTECTED]

Please try using this CVS snapshot:

  http://snaps.php.net/php4-STABLE-latest.tar.gz
 
For Windows:
 
  http://snaps.php.net/win32/php4-win32-STABLE-latest.zip



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[2003-10-09 00:09:43] musha dot yoshinori at nifty dot ne dot jp

I know that it depends on platforms. I use PHP on Windows XP Pro,
Apache2.0.46 and PHP4.3.3. It also appears on PHP4.3.3RC1. A preg_match
with the same regular expression works fine on other platform. 
Thank you.

------------------------------------------------------------------------

[2003-10-08 22:36:43] [EMAIL PROTECTED]

Works fine here on Linux, what locale are you using?

------------------------------------------------------------------------

[2003-10-08 14:04:09] musha dot yoshinori at nifty dot ne dot jp

Description:
------------
PHP aborts without any message or runs forever in below case.
Platform: Windows XP Pro, Apache2.0.46, PHP4.3.3

For example, in preg_match('/a(?:.)+z/',$str,$match), the length of
string matched between 'a' and 'z' is more than approximately 1KB. It
always appears. According to the length, PHP aborts without any message
or runs forever.

It also appears in preg_match('/a(?>.)+z/',$str,$match), but does not
appear in preg_match('/a(.)+z/',$str,$match) and
preg_match('/a.+z/',$str,$match).

Actually, I want to use
preg_match_all('/<tr[^>]*>((?>.(?!<\/tr>))+.)<\/tr>/is',$str,$matches)
and so on.

Reproduce code:
---------------
$str =<<<EOD
a
nnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnn
nnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnn
nnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnn
nnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnn
nnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnn
nnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnn
nnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnn
nnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnn
nnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnn
nnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnn
nnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnn
z
EOD;

preg_match('/a(?:.)+z/s',$str,$match);
echo $match[0];
// It cannot reach the 'echo $match[0];'.


Expected result:
----------------
a
nnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnn
nnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnn
nnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnn
nnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnn
nnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnn
nnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnn
nnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnn
nnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnn
nnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnn
nnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnn
nnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnn
z


Actual result:
--------------
We cannot get any result.


------------------------------------------------------------------------


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