michael@0: var o = { };
michael@0: for (var i = 0; i <= 50; i++)
michael@0:     o[i] = i;
michael@0: 
michael@0: Object.defineProperty(o, "51", { get: assertEq });
michael@0: 
michael@0: var threw = 0;
michael@0: function g(o, i) {
michael@0:     try {
michael@0:         assertEq(o[i], i);
michael@0:     } catch (e) {
michael@0:         threw++;
michael@0:     }
michael@0: }
michael@0: 
michael@0: function f() {
michael@0:     for (var i = 0; i <= 51; i++)
michael@0:       g(o, i);
michael@0: }
michael@0: 
michael@0: f();
michael@0: f();
michael@0: f();
michael@0: assertEq(threw, 3);
michael@0: