12 lines
384 B
JavaScript
12 lines
384 B
JavaScript
// Copyright 2015 the V8 project authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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function Bar() { }
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function Baz() { }
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Baz.prototype = { __proto__: new Bar() }
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var x = new Baz();
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function foo(y) { return y instanceof Bar; }
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assertTrue(foo(x));
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Baz.prototype.__proto__ = null;
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assertFalse(foo(x));
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