--TEST--
Bug #68942 (Use after free vulnerability in unserialize() with DateTimeZone).
--FILE--
<?php
$data = unserialize('a:2:{i:0;O:12:"DateTimeZone":2:{s:13:"timezone_type";a:2:{i:0;i:1;i:1;i:2;}s:8:"timezone";s:1:"A";}i:1;R:4;}');
var_dump($data);
?>
--EXPECTF--
Fatal error: DateTimeZone::__wakeup(): Timezone initialization failed in %s%ebug68942.php on line %d