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sourceRevisionAtLastExport: 33f2fb0e53d135f0ee17cfccd9d993eb2a6f47de targetRevisionAtLastExport: 31340cbd9add103f586d501b0c3354b7b182abc0
18 lines
417 B
JavaScript
18 lines
417 B
JavaScript
// Copyright 2018 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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//
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// Flags: --allow-natives-syntax
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const o = {x:9};
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o.__proto__ = Array.prototype;
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function foo(o) {
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return o.indexOf(undefined);
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}
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assertEquals(-1, foo(o));
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assertEquals(-1, foo(o));
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%OptimizeFunctionOnNextCall(foo);
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assertEquals(-1, foo(o));
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