Kmake/deps/v8/test/mjsunit/regress/regress-805729.js

// 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.

async function* asyncGenerator() {};
let gen = asyncGenerator();
gen.return({ get then() { delete this.then; gen.next(); } });