michael@0: function loop() {
michael@0:     var x;
michael@0:     for (var i = 0; i < 9; i++)
michael@0:         x = {1.5: 1};
michael@0:     return x;
michael@0: }
michael@0: 
michael@0: loop(); // record
michael@0: Object.prototype.__defineSetter__('1.5', function () { return 'BAD'; });
michael@0: var x = loop(); // playback
michael@0: assertEq(x["1.5"], 1);