| // Copyright (C) 2016 the V8 project authors. All rights reserved. |
| // This code is governed by the BSD license found in the LICENSE file. |
| /*--- |
| esid: sec-array.prototype.filter |
| description: Accept non-Array constructors from other realms |
| info: | |
| 1. Let O be ? ToObject(this value). |
| [...] |
| 5. Let A be ? ArraySpeciesCreate(O, 0). |
| [...] |
| |
| 9.4.2.3 ArraySpeciesCreate |
| |
| [...] |
| 5. Let C be ? Get(originalArray, "constructor"). |
| 6. If IsConstructor(C) is true, then |
| a. Let thisRealm be the current Realm Record. |
| b. Let realmC be ? GetFunctionRealm(C). |
| c. If thisRealm and realmC are not the same Realm Record, then |
| i. If SameValue(C, realmC.[[Intrinsics]].[[%Array%]]) is true, let C |
| be undefined. |
| [...] |
| features: [cross-realm, Symbol.species] |
| ---*/ |
| |
| var array = []; |
| var callCount = 0; |
| var CustomCtor = function() {}; |
| var OObject = $262.createRealm().global.Object; |
| var speciesDesc = { |
| get: function() { |
| callCount += 1; |
| } |
| }; |
| var result; |
| array.constructor = OObject; |
| OObject[Symbol.species] = CustomCtor; |
| |
| Object.defineProperty(Array, Symbol.species, speciesDesc); |
| |
| result = array.filter(function() {}); |
| |
| assert.sameValue(Object.getPrototypeOf(result), CustomCtor.prototype); |
| assert.sameValue(callCount, 0, 'Array species constructor is not referenced'); |