text: load("1d8ada728956c1a3d52d68d1d4d6dd52.js");
  // 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
  
  
  var symbol = %CreatePrivateSymbol("private");
  
  
  // Private symbols must never be listed.
  
  var object = {};
  object[symbol] = 42;
  for (var key of Object.keys(object)) assertUnreachable();
  for (var key of Object.getOwnPropertySymbols(object)) assertUnreachable();
  for (var key of Object.getOwnPropertyNames(object)) assertUnreachable();
  for (var key of Reflect.ownKeys(object)) assertUnreachable();
  for (var key in object) assertUnreachable();
  
  var object2 = {__proto__: object};
  for (var key of Object.keys(object2)) assertUnreachable();
  for (var key of Object.getOwnPropertySymbols(object2)) assertUnreachable();
  for (var key of Object.getOwnPropertyNames(object2)) assertUnreachable();
  for (var key of Reflect.ownKeys(object2)) assertUnreachable();
  for (var key in object2) assertUnreachable();
  
  
  // Private symbols must never leak to proxy traps.
  
  var proxy = new Proxy({}, new Proxy({}, {get() {return () => {throw 666}}}));
  var object = {__proto__: proxy};
  
  // [[Set]]
  assertEquals(42, proxy[symbol] = 42);
  assertThrows(function() { "use strict"; proxy[symbol] = 42 }, TypeError);
  assertEquals(false, Reflect.set(proxy, symbol, 42));
  assertEquals(42, object[symbol] = 42);
  assertEquals(43, (function() {"use strict"; return object[symbol] = 43})());
  assertEquals(true, Reflect.set(object, symbol, 44));
  
  // [[DefineOwnProperty]]
  assertEquals(false, Reflect.defineProperty(proxy, symbol, {}));
  assertThrows(() => Object.defineProperty(proxy, symbol, {}), TypeError);
  assertEquals(true, Reflect.defineProperty(object, symbol, {}));
  assertEquals(object, Object.defineProperty(object, symbol, {}));
  
  // [[Delete]]
  assertEquals(true, delete proxy[symbol]);
  assertEquals(true, (function() {"use strict"; return delete proxy[symbol]})());
  assertEquals(true, Reflect.deleteProperty(proxy, symbol));
  assertEquals(true, delete object[symbol]);
  assertEquals(true, (function() {"use strict"; return delete object[symbol]})());
  assertEquals(true, Reflect.deleteProperty(object, symbol));
  
  // [[GetOwnPropertyDescriptor]]
  assertEquals(undefined, Object.getOwnPropertyDescriptor(proxy, symbol));
  assertEquals(undefined, Reflect.getOwnPropertyDescriptor(proxy, symbol));
  assertFalse(Object.prototype.hasOwnProperty.call(proxy, symbol));
  assertEquals(undefined, Object.getOwnPropertyDescriptor(object, symbol));
  assertEquals(undefined, Reflect.getOwnPropertyDescriptor(object, symbol));
  assertFalse(Object.prototype.hasOwnProperty.call(object, symbol));
  
  // [[Has]]
  assertFalse(symbol in proxy);
  assertFalse(Reflect.has(proxy, symbol));
  assertFalse(symbol in object);
  assertFalse(Reflect.has(object, symbol));
  
  // [[Get]]
  assertEquals(undefined, proxy[symbol]);
  assertEquals(undefined, Reflect.get(proxy, symbol));
  assertEquals(undefined, Reflect.get(proxy, symbol, 42));
  assertEquals(undefined, object[symbol]);
  assertEquals(undefined, Reflect.get(object, symbol));
  assertEquals(undefined, Reflect.get(object, symbol, 42));
  