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| 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 properti
es |
| 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); |
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