// 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.

function C() {};

const p = new Proxy({}, { getPrototypeOf() { return C.prototype } });

assertTrue(C[Symbol.hasInstance](p));
assertTrue(C[Symbol.hasInstance](p));
