michael@0: function whoo() {
michael@0:     (new Object()).foo()
michael@0: }
michael@0: Object.prototype.foo = function() { return undefined };
michael@0: whoo();
michael@0: Object.prototype.foo = undefined;
michael@0: gc();
michael@0: try {
michael@0:     whoo();
michael@0:     assertEq(0, 1);
michael@0: } catch(e) {
michael@0:     assertEq(e instanceof TypeError, true);
michael@0: }