16 lines
423 B
JavaScript
16 lines
423 B
JavaScript
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// Copyright 2024 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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let undetectable = %GetUndetectable();
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function foo(a) {
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return !!a.x;
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}
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var o = { x : undetectable };
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%PrepareFunctionForOptimization(foo);
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assertFalse(foo(o));
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%OptimizeFunctionOnNextCall(foo);
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assertFalse(foo(o));
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