| 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 | |
| Ben Murdoch | 61f157c | 2016-09-16 13:49:30 +0100 | [diff] [blame] | 5 | // Flags: --allow-natives-syntax |
| Ben Murdoch | da12d29 | 2016-06-02 14:46:10 +0100 | [diff] [blame] | 6 | |
| 7 | // Overwriting the constructor of an instance updates the protector |
| 8 | |
| 9 | let x = []; |
| 10 | |
| 11 | assertEquals(Array, x.map(()=>{}).constructor); |
| 12 | assertEquals(Array, x.filter(()=>{}).constructor); |
| 13 | assertEquals(Array, x.slice().constructor); |
| 14 | assertEquals(Array, x.splice().constructor); |
| 15 | assertEquals(Array, x.concat([1]).constructor); |
| 16 | assertEquals(1, x.concat([1])[0]); |
| 17 | |
| 18 | class MyArray extends Array { } |
| 19 | |
| 20 | Object.defineProperty(x, 'constructor', {get() { return MyArray; }}); |
| 21 | assertFalse(%SpeciesProtector()); |
| 22 | |
| 23 | assertEquals(MyArray, x.map(()=>{}).constructor); |
| 24 | assertEquals(MyArray, x.filter(()=>{}).constructor); |
| 25 | assertEquals(MyArray, x.slice().constructor); |
| 26 | assertEquals(MyArray, x.splice().constructor); |
| 27 | assertEquals(MyArray, x.concat([1]).constructor); |
| 28 | assertEquals(1, x.concat([1])[0]); |