// Copyright 2014 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: --harmony-object-observe
// Flags: --allow-natives-syntax
// These tests are meant to ensure that that the Object.observe runtime
// functions are hardened.
var obj = {};
%SetIsObserved(obj);
assertThrows(function() {
%SetIsObserved(obj);
});
assertThrows(function() {
%SetIsObserved(this);
});