function foo(x, y) {
    var z = x;
    function bar() {
        return z;
    }
    for (var i = 0; i < 3; ++i)
        z += y;
    return bar();
}

eval("// Don't compile me");

var result = 0;

for (var i = 0; i < 100000; ++i)
    result += foo(1000000000, 1000000000);

if (result != 400000000000000)
    throw "Error: bad result: " + result;