Description:
------------
Can't set an error handler to a private method from another (public) method of the same class

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

class Test
{
	private function errorHandler($errno, $errstr, $errfile, $errline)
	{
		echo "handled";
	}
	function __construct()
	{
		set_error_handler(array(&$this, "errorHandler"));
		$dom = new DOMDocument();
		$dom->load("not found"); // warning
		restore_error_handler();
	}
}

$test = new Test();

?>

Expected result:
----------------
handled

Actual result:
--------------
Fatal error: Call to private method Test::errorHandler() from context '' in C:\test.php on line 13