| // Copyright 2016 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. |
| |
| // Flags: --allow-natives-syntax |
| |
| // Overwriting the constructor of an instance updates the protector |
| |
| let x = []; |
| |
| assertEquals(Array, x.map(()=>{}).constructor); |
| assertEquals(Array, x.filter(()=>{}).constructor); |
| assertEquals(Array, x.slice().constructor); |
| assertEquals(Array, x.splice().constructor); |
| assertEquals(Array, x.concat([1]).constructor); |
| assertEquals(1, x.concat([1])[0]); |
| |
| class MyArray extends Array { } |
| |
| x.constructor = MyArray; |
| assertFalse(%ArraySpeciesProtector()); |
| |
| assertEquals(MyArray, x.map(()=>{}).constructor); |
| assertEquals(MyArray, x.filter(()=>{}).constructor); |
| assertEquals(MyArray, x.slice().constructor); |
| assertEquals(MyArray, x.splice().constructor); |
| assertEquals(MyArray, x.concat([1]).constructor); |
| assertEquals(1, x.concat([1])[0]); |