From: cdragon at draconic dot com
Operating system: win2k
PHP version: 5CVS-2004-12-18 (dev)
PHP Bug Type: Reproducible crash
Bug description: extract($GLOBALS, EXTR_REFS) corrupts memory
Description:
------------
Since php 5.0.1, extract($GLOBALS, EXTR_REFS) seems to corrupt code memory
and cause various random problems. In my test case, it caused
COM("someobject") to always return null, and in another case it just
caused some strange output of a "1" instead of the expected strings. I
never had a problem in php 5.0.0 up to CVS snapshot
php5.0-win32-200407301630. Commenting out extract($GLOBALS, EXTR_REFS)
fixes all strange behavior.
I had a similar problem in php 4 which I reported as bug id 25708. That
bug was fixed and I never had a problem again until 5.0.1.
Reproduce code:
---------------
extract($GLOBALS, EXTR_REFS);
$query = new COM("IXSSO.Query");
if(is_object($query) == false) {
var_dump($query);
print "Can't create IXSSO Query object.";
exit();
}
Expected result:
----------------
Nothing
Actual result:
--------------
PHP has encountered an Access Violation at 01D5F185
--
Edit bug report at http://bugs.php.net/?id=31217&edit=1
--
Try a CVS snapshot (php4): http://bugs.php.net/fix.php?id=31217&r=trysnapshot4
Try a CVS snapshot (php5.0):
http://bugs.php.net/fix.php?id=31217&r=trysnapshot50
Try a CVS snapshot (php5.1):
http://bugs.php.net/fix.php?id=31217&r=trysnapshot51
Fixed in CVS: http://bugs.php.net/fix.php?id=31217&r=fixedcvs
Fixed in release: http://bugs.php.net/fix.php?id=31217&r=alreadyfixed
Need backtrace: http://bugs.php.net/fix.php?id=31217&r=needtrace
Need Reproduce Script: http://bugs.php.net/fix.php?id=31217&r=needscript
Try newer version: http://bugs.php.net/fix.php?id=31217&r=oldversion
Not developer issue: http://bugs.php.net/fix.php?id=31217&r=support
Expected behavior: http://bugs.php.net/fix.php?id=31217&r=notwrong
Not enough info:
http://bugs.php.net/fix.php?id=31217&r=notenoughinfo
Submitted twice:
http://bugs.php.net/fix.php?id=31217&r=submittedtwice
register_globals: http://bugs.php.net/fix.php?id=31217&r=globals
PHP 3 support discontinued: http://bugs.php.net/fix.php?id=31217&r=php3
Daylight Savings: http://bugs.php.net/fix.php?id=31217&r=dst
IIS Stability: http://bugs.php.net/fix.php?id=31217&r=isapi
Install GNU Sed: http://bugs.php.net/fix.php?id=31217&r=gnused
Floating point limitations: http://bugs.php.net/fix.php?id=31217&r=float
No Zend Extensions: http://bugs.php.net/fix.php?id=31217&r=nozend
MySQL Configuration Error: http://bugs.php.net/fix.php?id=31217&r=mysqlcfg
