Description:
------------
Only partially solved in https://bugs.php.net/bug.php?id=67118

$this is unset (see https://bugs.php.net/bug.php?id=67179 for bug about this) but corrupted internal state still intact. Catching exception and calling parent::format() results in a segfault.

See http://3v4l.org/FeE0n#v536

Test script:
---------------
<?php

class DateTimeCustom extends DateTime
{
	public function __construct($datetime, $timezone = null)
	{
		try
        {
        	parent::__construct($datetime, $timezone);
        }
        catch (Exception $e)
        {
			var_dump($this, parent::getLastErrors(), parent::format('c'));
        }
	}
}


$date = new DateTimeCustom("sunday 09 blabla 2001 103:46:40 CEST");

Expected result:
----------------
Result for 5.3.0 - 5.3.5 is expected:

Warning: DateTime::format(): The DateTime object has not been correctly initialized by its constructor in /in/FeE0n on line 15
object(DateTimeCustom)#1 (0) {
}
bool(false)
bool(false)

Actual result:
--------------
Segfault.