From: paul at pscs dot co dot uk
Operating system: Win32 (Windows XP)
PHP version: 4.3.5RC3
PHP Bug Type: Reproducible crash
Bug description: preg_replace regexp causes PHP to die
Description:
------------
It looks as if when PHP is doing preg_replace and there are a lot of ()
values, then it just dies
With my example code, it'll die when doing preg_replace
I've tried a few values of $regexp on line 2
/<(.|\n)*>/ - it dies
/<(.)*>/ - it dies
/<.*>/ - it works fine
If the $test string is 1844 characters long it works fine, if it's 1845
characters long it dies.
It doesn't matter whether the string actually matches or not, it's the
number of characters it's trying to match.
The problem doesn't seem to happen with preg_match
Reproduce code:
---------------
<?php
$regexp = "/<(.|\n)*>/";
$stringlength = 1845;
echo "test start \n";
$test = '<' . str_repeat('x', $stringlength - 1);
$test = preg_replace($regexp,"",$test);
echo "test done\n";
?>
Expected result:
----------------
test start
test done
Actual result:
--------------
<nothing>
--
Edit bug report at http://bugs.php.net/?id=27310&edit=1
--
Try a CVS snapshot (php4): http://bugs.php.net/fix.php?id=27310&r=trysnapshot4
Try a CVS snapshot (php5): http://bugs.php.net/fix.php?id=27310&r=trysnapshot5
Fixed in CVS: http://bugs.php.net/fix.php?id=27310&r=fixedcvs
Fixed in release: http://bugs.php.net/fix.php?id=27310&r=alreadyfixed
Need backtrace: http://bugs.php.net/fix.php?id=27310&r=needtrace
Need Reproduce Script: http://bugs.php.net/fix.php?id=27310&r=needscript
Try newer version: http://bugs.php.net/fix.php?id=27310&r=oldversion
Not developer issue: http://bugs.php.net/fix.php?id=27310&r=support
Expected behavior: http://bugs.php.net/fix.php?id=27310&r=notwrong
Not enough info: http://bugs.php.net/fix.php?id=27310&r=notenoughinfo
Submitted twice: http://bugs.php.net/fix.php?id=27310&r=submittedtwice
register_globals: http://bugs.php.net/fix.php?id=27310&r=globals
PHP 3 support discontinued: http://bugs.php.net/fix.php?id=27310&r=php3
Daylight Savings: http://bugs.php.net/fix.php?id=27310&r=dst
IIS Stability: http://bugs.php.net/fix.php?id=27310&r=isapi
Install GNU Sed: http://bugs.php.net/fix.php?id=27310&r=gnused
Floating point limitations: http://bugs.php.net/fix.php?id=27310&r=float
