JSTests/stress/object-iterate.js

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

var obj = {
    a: 1,
    b: 2,
    c: 3,
    d: null,
    e: 'e'
};

function test(src) {
    var array = [];
    var keys = Object.keys(src);
    for (var i = 0; i < keys.length; ++i) {
      var key = keys[i];
      array.push(src[key]);
    }
    return array;
}
noInline(test);

for (var i = 0; i < 1e4; ++i)
    shouldBe(JSON.stringify(test(obj)), `[1,2,3,null,"e"]`);