Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1 | // Copyright 2015 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 | da12d29 | 2016-06-02 14:46:10 +0100 | [diff] [blame] | 5 | // Flags: --allow-natives-syntax |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 6 | |
| 7 | // Do not read out the prototype from a cross-realm object. |
| 8 | var realm = Realm.create(); |
| 9 | |
| 10 | __proto__ = {}; |
| 11 | assertEquals(null, |
| 12 | Realm.eval(realm, "3; Reflect.getPrototypeOf(Realm.global(0))")); |
| 13 | assertFalse(Realm.eval(realm, "3; Realm.global(0) instanceof Object")); |
| 14 | |
| 15 | __proto__ = new Proxy({}, { getPrototypeOf() { assertUnreachable() } }); |
| 16 | assertEquals(null, |
| 17 | Realm.eval(realm, "1; Reflect.getPrototypeOf(Realm.global(0))")); |
| 18 | assertFalse(Realm.eval(realm, "1; Realm.global(0) instanceof Object")); |
| 19 | |
| 20 | // Test that the instannceof check works in optimized code. |
| 21 | var test = Realm.eval(realm, |
| 22 | "()=>{1.1; return Realm.global(0) instanceof Object; }"); |
| 23 | assertFalse(test()); |
| 24 | test(); |
| 25 | test(); |
| 26 | %OptimizeFunctionOnNextCall(test); |
| 27 | assertFalse(test()); |
| 28 | |
| 29 | __proto__ = {}; |
| 30 | __proto__ = new Proxy({}, { get(t, p, r) { assertUnreachable() } }); |
| 31 | assertEquals(null, |
| 32 | Realm.eval(realm, "2; Reflect.getPrototypeOf(Realm.global(0))")); |
| 33 | assertFalse(Realm.eval(realm, "2; Realm.global(0) instanceof Object")); |
| 34 | |
| 35 | |
| 36 | __proto__ = {}; |
| 37 | __proto__.__proto__ = new Proxy({}, { |
| 38 | getPrototypeOf() { assertUnreachable() } |
| 39 | }); |
| 40 | assertEquals(null, |
| 41 | Realm.eval(realm, "4; Reflect.getPrototypeOf(Realm.global(0))")); |
| 42 | assertFalse(Realm.eval(realm, "4; Realm.global(0) instanceof Object")); |
| 43 | |
| 44 | // 2-level proxy indirection |
| 45 | __proto__ = {}; |
| 46 | __proto__ = new Proxy({}, |
| 47 | new Proxy({}, { |
| 48 | get() { assertUnreachable() } |
| 49 | }) |
| 50 | ); |
| 51 | assertEquals(null, |
| 52 | Realm.eval(realm, "5; Reflect.getPrototypeOf(Realm.global(0))")); |
| 53 | assertFalse(Realm.eval(realm, "5; Realm.global(0) instanceof Object")); |