#27535 [Opn->Asn]: Objects pointing to each other cause Apache to crash

From: Date: Tue, 09 Mar 2004 08:06:43 +0000
Subject: #27535 [Opn->Asn]: Objects pointing to each other cause Apache to crash
References: 1  Groups: php.bugs 
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 ID:               27535
 Updated by:       derick@php.net
 Reported By:      random at sinfusion dot com
-Status:           Open
+Status:           Assigned
-Bug Type:         Reproducible crash
+Bug Type:         Zend Engine 2 problem
 Operating System: Windows 2000
 PHP Version:      5.0.0b4 (beta4)
-Assigned To:      
+Assigned To:      andi
 New Comment:

It doesn't crash for me (in debug mode), but it does generate the
warning:

/dat/dev/php/php-5.0dev/Zend/zend_hash.c(504) : ht=0x42be32f0 is being
destroyed

This is the same problem it seems as:
http://news.php.net/article.php?group=php.internals&article=8441


Previous Comments:
------------------------------------------------------------------------

[2004-03-09 01:50:59] random at sinfusion dot com

Description:
------------
Originally this was happening at the end of PEAR::Auth's constructor
when it points it's storage object's '_auth_obj' variable to itself
($this).  I've created a simpler example that still crashes either
Apache 1.3.29 or 2.0.48, but in the simpler case it doesn't crash
Apache until the second time you run the script.

Reproduce code:
---------------
<?php

class Class1
{
    var $_Class2_obj;
}

class Class2
{
    var $storage = '';

    function Class2()
    {
        $this->storage = new Class1();

        $this->storage->_Class2_obj = $this;
    }
}

$foo = new Class2();

?>

Expected result:
----------------
No output, but no crash either.

Actual result:
--------------
Apache crashes


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


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