test262/implementation-contributed/javascriptcore/stress/arrayify-array-storage-non-array.js

function shouldBe(actual, expected) {
    if (actual !== expected)
        throw new Error('bad value: ' + actual);
}

var array = {0:1, 1:2, 2:3, 3:4, 4:5};
var array2 = {0:1, 1:"HELLO", 2:3, 3:4, 4:5};
var array3 = {0:0.1, 1:"OK", 2:0.3, 3:0.4, 4:0.5};
ensureArrayStorage(array2);
array.ok = 42;
array2.ok = 42;
array3.ok = 42;

// Arrayify(ArrayStorage) works with ftl-eager
function testArrayStorage(array)
{
    return array[4];
}
noInline(testArrayStorage);

for (var i = 0; i < 1e6; ++i) {
    shouldBe(testArrayStorage(array), 5);
    shouldBe(testArrayStorage(array2), 5);
    shouldBe(testArrayStorage(array3), 0.5);
}

var array4 = [0, 1, 2, 3, 4];
shouldBe(testArrayStorage(array4), 4);