shifted-elements3.js

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// Always use the per-element barrier.

gczeal(12);

function f() {

    var arr = [];

    for (var i = 0; i < 1000; i++)

        arr.push(i);

    gc(); // Ensure arr is tenured.

    for (var i = 0; i < 10; i++)

        arr.shift();

    // Add a nursery object, shift all elements, and trigger a GC to ensure

    // the post barrier doesn't misbehave.

    for (var j = 0; j < 40; j++)

        arr[500] = {x: j};

    while (arr.length > 0)

        arr.shift();

    gc();

    return arr;

f();