14 lines
396 B
JavaScript
14 lines
396 B
JavaScript
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// Copyright 2017 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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// Flags: --allow-natives-syntax
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function foo(o) { return o[0]; }
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assertEquals(undefined, foo({}));
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Array.prototype[0] = 0;
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assertEquals(undefined, foo({}));
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%OptimizeFunctionOnNextCall(foo);
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assertEquals(undefined, foo({}));
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