Edit report at https://bugs.php.net/bug.php?id=62339&edit=1

 ID:                 62339
 Updated by:         larue...@php.net
 Reported by:        manchokapitancho at gmail dot com
 Summary:            zend_mm_heap corrupted when trait is autoloaded
                     after a class that uses it.
 Status:             Feedback
 Type:               Bug
 Package:            Reproducible crash
 Operating System:   win 7
 PHP Version:        5.4.4
 Assigned To:        laruence
 Block user comment: N
 Private report:     N

 New Comment:

this bug is already fixed,  but seems the fix is not merged into 5.4.4

http://news.php.net/php.internals/60865

thanks


Previous Comments:
------------------------------------------------------------------------
[2012-06-17 05:11:55] larue...@php.net

Please try using this snapshot:

  http://snaps.php.net/php-trunk-latest.tar.gz
 
For Windows:

  http://windows.php.net/snapshots/

I can not reproduce this in trunk, sorry, could you please try with trunk?

------------------------------------------------------------------------
[2012-06-17 04:12:53] larue...@php.net

Dmitry, could you please look at this? 
thanks

------------------------------------------------------------------------
[2012-06-16 22:06:01] manchokapitancho at gmail dot com

Description:
------------
Bugs #61998 and #62234 seem to be really close to this:

PHP crashes after the script finishes. It echoes "zend_mm_heap corrupted".
Necessary components (ALL required):
1. A class that uses a trait. 
2. The trait should contain a method that also exists in the class. 
3. This trait method is loaded as an alias in the class.
4. The trait should be in a separate file that is loaded after the file that 
contains the class (__autoload)
5. There should be some other code loaded and parsed. The amount of code has 
some 
randomness but a class with 5000 methods usually works :)

Note: there is a serious randomness in the crash. Sometimes I get it 
constantly, 
sometimes it crashes when called from apache only and sometimes it may crash 
once 
and then start working fine.

Test script:
---------------
main.php
---------
function __autoload ($class) {
    include 'trait.php';
}
include 'demo.php';
$demo = new demo;
echo $demo->someFunc0();
echo $demo->broken();

trait.php
----------
trait a {
    function broken() { return 'broken'; }
}

demo.php
---------
class demo { 
    use a { broken as private broken_old; } 
    function broken() { return "OK:" . $this->broken_old(); } 
    function someFunc0(){return 0;}
... //a small number of method may not trigger that crash.
    function someFunc5000(){return 5000;}
}



Expected result:
----------------
OK:broken

Actual result:
--------------
OK:broken
zend_mm_heap corrupted




------------------------------------------------------------------------



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