| Ben Murdoch | da12d29 | 2016-06-02 14:46:10 +0100 | [diff] [blame] | 1 | // Copyright 2016 the V8 project authors. All rights reserved. |
| 2 | // Use of this source code is governed by a BSD-style license that can be |
| 3 | // found in the LICENSE file. |
| 4 | |
| 5 | // In ES#sec-array.prototype.concat |
| 6 | // When concat makes a new integer-indexed exotic object, the resulting properties |
| 7 | // are non-configurable and cannot have CreateDataPropertyOrThrow called on them, |
| 8 | // so it throws a TypeError on failure to make a new property. |
| 9 | |
| 10 | __v_0 = new Uint8Array(100); |
| 11 | array = new Array(10); |
| 12 | array.__proto__ = __v_0; |
| 13 | assertThrows(() => Array.prototype.concat.call(array), TypeError); |