Description:
------------
Magic __set function fails when called from a static method.

The sample code will work as expected if "$o->Dummy = $o2;" is replaced with, for example, "$o->Dummy = 'abc';".

Reproduce code:
---------------
<?
	class A {	
		public static function who () { return __CLASS__; }	
		public static function create () {
			$type = static::who ();
			$o = new $type ();			
			if ($type == 'B') {
				$o2 = C::create ();
				$o->Dummy = $o2;
			}
			return $o;
		}		
		public function __set ($key, $value) {
			echo "[setting $key]";
		}
	}	
	class B extends A {public static function who () { return __CLASS__; }}	
	class C extends A {public static function who () { return __CLASS__; }}	
	$obj_b = B::create (); echo '[Done]';
?>

Expected result:
----------------
[setting Dummy][Done]

Actual result:
--------------
No output. The scripting of the code seems to stop during this command: $o->Dummy = $o2;