// Copyright 2009 the V8 project authors. All rights reserved.
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// modification, are permitted provided that the following conditions are
// met:
//
//     * Redistributions of source code must retain the above copyright
//       notice, this list of conditions and the following disclaimer.
//     * Redistributions in binary form must reproduce the above
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function LoadX(obj) { return obj.x; }

// Load x from the prototype of this. Make sure to initialize the IC.
this.__proto__ = { x: 42 };
for (var i = 0; i < 3; i++) assertEquals(42, LoadX(this));

// Introduce a global variable and make sure we load that from LoadX.
this.x = 87;
for (var i = 0; i < 3; i++) assertEquals(87, LoadX(this));

// Delete the global variable and make sure we get back to loading from
// the prototype.
delete this.x;
for (var i = 0; i < 3; i++) assertEquals(42, LoadX(this));

// ... and go back again to loading directly from the object.
this.x = 99;
for (var i = 0; i < 3; i++) assertEquals(99, LoadX(this));