// Copyright 2016 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-syntaxfunctionfoo(x){vara=newArray(1);a[0]=x;returna;}assertEquals([1],foo(1));assertEquals([1],foo(1));%OptimizeFunctionOnNextCall(foo);assertEquals([1],foo(1));Object.prototype.__defineSetter__("0",function(){});assertEquals([undefined],foo(1));