// Copyright 2018 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 --opt/* Test deopt behaviors when the prototype has elements */// slice(function(){vararray=[,];functionslice(){returnarray.slice();}slice();slice();%OptimizeFunctionOnNextCall(slice);assertEquals(slice(),[,]);array.__proto__.push(5);// deoptvarnarr=slice();assertNotEquals(Object.getOwnPropertyDescriptor(narr,0),undefined);assertEquals(narr[0],5);})();