michael@0: var z = 0;
michael@0: function f() {
michael@0:     this.b = function() {};
michael@0:     this.b = undefined;
michael@0:     if (z++ > 8)
michael@0:         this.b();
michael@0: }
michael@0: 
michael@0: try {
michael@0:     for (var i = 0; i < 10; i++)
michael@0:         new f();
michael@0: } catch (exc) {}