#47376 [NEW]: Segmentation fault in preg_replace on many repitition of pattern
From: pahan at hubbitus dot spb dot su
Operating system: Linux
PHP version: 5.3.0beta1
PHP Bug Type: PCRE related
Bug description: Segmentation fault in preg_replace on many repitition of pattern
Description:
------------
On text, where search pattern repeated many times (>643 times by test) php
segfaulted (Core dump you may download here:
http://ru.bir.ru/_temp/php-pcre-bug/core.8729
) on preg_replace.
So, if we reduce length of test text (
http://ru.bir.ru/_temp/php-pcre-bug/pcre_bug.text
) on 1 line, or just
limit repetition on 1 - it is worked.
All Zend-modules was disabled.
Reproduce code:
---------------
<?
$text = file_get_contents('pcre_bug.text');
echo preg_replace('/(@@ -[\d,]+ \+[\d,]+ @@\s){2,}/s', '-some data-',
$text); //Segmentation fault
$text = file();
# Interesting:
#echo preg_replace('/(@@ -[\d,]+ \+[\d,]+ @@\s){2,642}/s', '-some data-',
$text); //Work, but result it is not same as needed.
#echo preg_replace('/(@@ -[\d,]+ \+[\d,]+ @@\s){2,643}/s', '-some data-',
$text); //PHP Warning: preg_replace(): Compilation failed: regular
expression is too large at offset 33
?>
Expected result:
----------------
Work as when text is less.
Actual result:
--------------
Segmentation fault
--
Edit bug report at http://bugs.php.net/?id=47376&edit=1
--
Try a CVS snapshot (PHP 5.2): http://bugs.php.net/fix.php?id=47376&r=trysnapshot52
Try a CVS snapshot (PHP 5.3): http://bugs.php.net/fix.php?id=47376&r=trysnapshot53
Try a CVS snapshot (PHP 6.0): http://bugs.php.net/fix.php?id=47376&r=trysnapshot60
Fixed in CVS: http://bugs.php.net/fix.php?id=47376&r=fixedcvs
Fixed in CVS and need be documented: http://bugs.php.net/fix.php?id=47376&r=needdocs
Fixed in release: http://bugs.php.net/fix.php?id=47376&r=alreadyfixed
Need backtrace: http://bugs.php.net/fix.php?id=47376&r=needtrace
Need Reproduce Script: http://bugs.php.net/fix.php?id=47376&r=needscript
Try newer version: http://bugs.php.net/fix.php?id=47376&r=oldversion
Not developer issue: http://bugs.php.net/fix.php?id=47376&r=support
Expected behavior: http://bugs.php.net/fix.php?id=47376&r=notwrong
Not enough info: http://bugs.php.net/fix.php?id=47376&r=notenoughinfo
Submitted twice: http://bugs.php.net/fix.php?id=47376&r=submittedtwice
register_globals: http://bugs.php.net/fix.php?id=47376&r=globals
PHP 4 support discontinued: http://bugs.php.net/fix.php?id=47376&r=php4
Daylight Savings: http://bugs.php.net/fix.php?id=47376&r=dst
IIS Stability: http://bugs.php.net/fix.php?id=47376&r=isapi
Install GNU Sed: http://bugs.php.net/fix.php?id=47376&r=gnused
Floating point limitations: http://bugs.php.net/fix.php?id=47376&r=float
No Zend Extensions: http://bugs.php.net/fix.php?id=47376&r=nozend
MySQL Configuration Error: http://bugs.php.net/fix.php?id=47376&r=mysqlcfg
Thread (7 messages)
- pahan at hubbitus dot spb dot su