function foo() {
    arguments.length = 2;
    return bar.apply({}, arguments);
}

function bar() {
    var result = 0;
    for (var x of arguments) {
	result += x;
    }
    return result;
}

var sum = 0;
for (var i = 0; i < 100; i++) {
    sum += foo(1,2,3,4,5,6);
}
assertEq(sum,300);