| // Copyright 2018 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. |
| |
| // Fill up the Array prototype's elements. |
| for (let i = 0; i < 100; i++) Array.prototype.unshift(3.14); |
| |
| // Create a holey double elements array. |
| const o31 = [1.1]; |
| o31[37] = 2.2; |
| |
| // Concat converts to dictionary elements. |
| const o51 = o31.concat(false); |
| |
| // Set one element to undefined to trigger the movement bug. |
| o51[0] = undefined; |
| |
| assertEquals(o51.length, 39); |
| |
| // Sort triggers the bug. |
| o51.sort(); |
| |
| assertEquals(o51.length, 39); |
