Description:
------------
 Class b extends Class A, But Class A __construct is proviate

Reproduce code:
---------------
cclass a {

	public static function singles()
	{
		return new a;
	}

	private function __construct(){}

	public function test()
	{
		$class = 'b';
		return new $class;
	}
}

class b extends a {
	
	public function getstr()
	{
		echo 'aaaaa';
	}
}

$b = a::singles();
$obj = $b->test();
$obj->getstr();

Expected result:
----------------
Fatal error: Call to private a::__construct() from context 'a'

Because Class b extends Class A, But Class A __construct is proviate.

Actual result:
--------------
Run above code:
Windows: aaaaa
Linux: Fatal error: Call to private a::__construct() from context 'a' in /data0/www/www/ui/member/receive.php on line 53

Why windows's result is ?