20 lines
601 B
JavaScript
20 lines
601 B
JavaScript
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// Copyright 2020 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 f(fnConstructor) {
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return Object.is(new fnConstructor(), undefined);
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}
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const realmIndex = Realm.createAllowCrossRealmAccess();
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const otherFunction = Realm.global(realmIndex).Function;
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Realm.detachGlobal(realmIndex);
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%PrepareFunctionForOptimization(f);
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assertFalse(f(Function));
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assertThrows(_ => f(otherFunction));
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%OptimizeFunctionOnNextCall(f);
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assertThrows(_ => f(otherFunction));
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