ID: 28461
Updated by: [EMAIL PROTECTED]
Reported By: xanthor at xanthor dot tk
-Status: Feedback
+Status: Open
Bug Type: PCRE related
Operating System: Linux, WindowsXP�
PHP Version: 4.3.8; 4.3.9RC1, 5.0.1
New Comment:
your last regex crashes PHP 5 also.
The segfault isn't in PHP but in pcre (this is quite normal due to the
NFA nature of pcre).
Previous Comments:
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[2004-09-10 17:01:41] hewei at ied dot org dot cn
preg_match("/(((?<!aaa).)*)(?<!aaa)aaa/",str_repeat('
',10882).'aaa',$z);
crashes PHP4.3.9RC2
But not on php-4.3.2-11.1.ent (WBEL 3.0), the length
to trigger segmentation fault is about 19230.
The most funny thing is that the more closer to the limit, the more
likely you will get a random segmentation fault.
Not only the above pattern will cause the error,
preg_match("/^( )*$/",str_repeat(' ',19250));
will too.
------------------------------------------------------------------------
[2004-09-10 12:49:48] [EMAIL PROTECTED]
Please try using this CVS snapshot:
http://snaps.php.net/php5-STABLE-latest.tar.gz
For Windows:
http://snaps.php.net/win32/php5.0-win32-latest.zip
I couldn't reproduce any of the crashes.
------------------------------------------------------------------------
[2004-08-23 11:24:50] xanthor at xanthor dot tk
Updating version :
I've found an other expression which segfaults also PHP 5 :
preg_match("/^((?<!a).)*/",str_repeat('b',21236),$z);
------------------------------------------------------------------------
[2004-07-19 11:11:33] xanthor at xanthor dot tk
The bug is still here with PHP 4.3.8
------------------------------------------------------------------------
[2004-05-21 11:17:44] xanthor at xanthor dot tk
No it isn't fixed :
with 2236+3 chars it works, but when we increase this number we manage
to have an other segmentation fault.
(The new limit seems to be 2247+3)
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