bug656261.js - mozsearch

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function build_getter(i) {

    var x = [i];

    return function f() { return x; }

function test()

    var N = internalConst("MARK_STACK_BASE_CAPACITY") + 2;

    var o = {};

    var descriptor = { enumerable: true};

    for (var i = 0; i != N; ++i) {

	descriptor.get = build_getter(i);

	Object.defineProperty(o, i, descriptor);

    // At this point we have an object o with N getters. Each getter in turn

    // is a closure storing an array. During the GC we push to the object

    // marking stack all the getters found in an object after we mark it. As N

    // exceeds the size of the object marking stack, this requires to run the

    // dealyed scanning for some closures to mark the array objects stored in

    // them.

//

    // We run the GC twice to make sure that the background finalization

    // finishes before we access the objects.

    gc();

    gc();

    for (var i = 0; i != N; ++i)

	assertEq(o[i][0], i);

test();