michael@0: var o = {x:42};
michael@0: 
michael@0: function f(index,param) {
michael@0:     arguments[1] = 0;
michael@0:     var ret = 0;
michael@0:     for (var i = 0; i < 5; ++i)
michael@0:         ret = arguments[index].x;
michael@0:     return ret;
michael@0: }
michael@0: 
michael@0: assertEq(f(2,o,o), 42);
michael@0: assertEq(f(1,o,o), undefined);