| // Copyright 2020 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. | |
| 'use strict'; | |
| Object.defineProperty( | |
| this.__proto__, "boom", | |
| { value:153, writable:true, configurable: true, enumerable:false }); | |
| var good = 1; | |
| try { | |
| boom = 42; | |
| } catch (e) {} | |
| var properties = Object.getOwnPropertyNames(this); | |
| assertTrue(properties.findIndex(e => e == "good") >= 0); | |
| assertEquals(properties.findIndex(e => e == "boom"), -1); |