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

ID: 27535 Updated by: sniper@php.net Reported By: random at sinfusion dot com -Status: Assigned +Status: Closed Bug Type: Zend Engine 2 problem Operating System: * PHP Version: 5CVS-2004-03-09 Assigned To: andi New Comment: This bug has been fixed in CVS. Snapshots of the sources are packaged every three hours; this change will be in the next snapshot. You can grab the snapshot at http://snaps.php.net/. Thank you for the report, and for helping us make PHP better. Previous Comments: ------------------------------------------------------------------------ [2004-03-09 03:06:43] derick@php.net 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 ------------------------------------------------------------------------ [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 ------------------------------------------------------------------------ -- Edit this bug report at http://bugs.php.net/?id=27535&edit=1