// 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);