#30674 [Opn->Ver]: Unexpected results and core dump with recursive references serializing

ID: 30674 Updated by: sniper@php.net Reported By: fmmarzoa at gmx dot net -Status: Open +Status: Verified Bug Type: Zend Engine 2 problem -Operating System: Linux (probably others) +Operating System: * -PHP Version: 5.0.2 +PHP Version: 5CVS-STABLE-2005-03-07 New Comment: I can not reproduce this with latest HEAD branch but PHP_5_0 branch is still broken. Previous Comments: ------------------------------------------------------------------------ [2004-11-03 16:47:29] fmmarzoa at gmx dot net (just changed "crashed" by "core dump" in subject) ------------------------------------------------------------------------ [2004-11-03 16:29:49] fmmarzoa at gmx dot net Description: ------------ serialize function lost references to itself on an array and produces a segfault in some other circunstances. I send the code with which I've discovered the problem, but Andrey Hristov has also cooked some code based on this that crash the PHP engine. Complete quoted thread with more code samples can be found on the internals list archive: http://marc.theaimsgroup.com/?l=php-dev&m=109949534625983&w=2 Reproduce code: --------------- <pre> <?php $Arr = array(); $Arr['self'] = &$Arr; var_dump ( $Arr ); $serdata = serialize ($Arr); $Arr2 = unserialize ( $serdata ); echo "\n\n"; var_dump ( $Arr2 ); ?> </pre> Complete quoted thread with more code samples, including segfaults, can be found on the internals list archive: http://marc.theaimsgroup.com/?l=php-dev&m=109949534625983&w=2 Expected result: ---------------- array(1) { ["self"]=> array(1) { ["self"]=> *RECURSION* } } array(1) { ["self"]=> array(1) { ["self"]=> *RECURSION* } } Actual result: -------------- array(1) { ["self"]=> array(1) { ["self"]=> *RECURSION* } } array(1) { ["self"]=> array(1) { ["self"]=> NULL } } ------------------------------------------------------------------------ -- Edit this bug report at http://bugs.php.net/?id=30674&edit=1