v8/test/mjsunit/regress/regress-165637.js

// Copyright 2012 the V8 project authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

// Make sure that packed and unpacked array slices are still properly handled
var holey_array = [1, 2, 3, 4, 5,,,,,,];
assertEquals([undefined], holey_array.slice(6, 7));
assertEquals(undefined, holey_array.slice(6, 7)[0]);
assertEquals([], holey_array.slice(2, 1));
assertEquals(3, holey_array.slice(2, 3)[0]);