// Copyright 2021 the V8 project authors. All rights reserved.// Use of this source code is governed by a BSD-style license that can be// found in the LICENSE file.//// Flags: --allow-natives-syntax --sparkplugfunctionfoo(){// __proto__ is a setter that is defined to return undefined.return__proto__=5;}assertEquals(foo(),5);assertEquals(foo(),5);%EnsureFeedbackVectorForFunction(foo);assertEquals(foo(),5);assertEquals(foo(),5);%CompileBaseline(foo);assertEquals(foo(),5);assertEquals(foo(),5);