// Copyright 2019 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-syntaxfunctionf(){Promise.prototype.then.call()}%PrepareFunctionForOptimization(f);try{f();}catch(e){}%OptimizeFunctionOnNextCall(f);assertThrows(()=>f(),TypeError);