From: jm at mayfirst dot org
Operating system: gnu linux/debian sid
PHP version: 5.2.4
PHP Bug Type: PCRE related
Bug description: preg_replace returns empty string
Description:
------------
When executing preg_replace on a string over 32,205 bytes and no double
line breaks with the following expression, the function neither matches nor
returns the original string. preg_last_error() doesn't indicate any preg
related errors.
Reproduce code:
---------------
error_reporting(E_ALL);
$original_string = "This is a preg_replace bug.\n";
$string = '';
$i = 0;
while($i < 1177) {
$string .= $original_string;
preg_replace('/\n?(.+?)(?:\n\s*\n|\z)/s', "foo", $string,-1,$count);
if($count == 0) {
echo "I broke at count: $i\n";
exit;
}
$i++;
}
echo "I didn't break at count: $i\n";
echo preg_last_error();
Expected result:
----------------
I didn't break at count: 1176.
Actual result:
--------------
I broke at count: 1176
--
Edit bug report at http://bugs.php.net/?id=42806&edit=1
--
Try a CVS snapshot (PHP 4.4):
http://bugs.php.net/fix.php?id=42806&r=trysnapshot44
Try a CVS snapshot (PHP 5.2):
http://bugs.php.net/fix.php?id=42806&r=trysnapshot52
Try a CVS snapshot (PHP 6.0):
http://bugs.php.net/fix.php?id=42806&r=trysnapshot60
Fixed in CVS: http://bugs.php.net/fix.php?id=42806&r=fixedcvs
Fixed in release:
http://bugs.php.net/fix.php?id=42806&r=alreadyfixed
Need backtrace: http://bugs.php.net/fix.php?id=42806&r=needtrace
Need Reproduce Script: http://bugs.php.net/fix.php?id=42806&r=needscript
Try newer version: http://bugs.php.net/fix.php?id=42806&r=oldversion
Not developer issue: http://bugs.php.net/fix.php?id=42806&r=support
Expected behavior: http://bugs.php.net/fix.php?id=42806&r=notwrong
Not enough info:
http://bugs.php.net/fix.php?id=42806&r=notenoughinfo
Submitted twice:
http://bugs.php.net/fix.php?id=42806&r=submittedtwice
register_globals: http://bugs.php.net/fix.php?id=42806&r=globals
PHP 3 support discontinued: http://bugs.php.net/fix.php?id=42806&r=php3
Daylight Savings: http://bugs.php.net/fix.php?id=42806&r=dst
IIS Stability: http://bugs.php.net/fix.php?id=42806&r=isapi
Install GNU Sed: http://bugs.php.net/fix.php?id=42806&r=gnused
Floating point limitations: http://bugs.php.net/fix.php?id=42806&r=float
No Zend Extensions: http://bugs.php.net/fix.php?id=42806&r=nozend
MySQL Configuration Error: http://bugs.php.net/fix.php?id=42806&r=mysqlcfg
