michael@0: function f3() { return 2; };
michael@0: function f4(o) { o.g4 = function() {}; };
michael@0: 
michael@0: var f = function() {};
michael@0: f.x = undefined;
michael@0: f4(new String("x"));
michael@0: f3();
michael@0: f4(f);
michael@0: 
michael@0: for(var i=0; i<20; i++) {
michael@0:     f4(Math);
michael@0: }