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// Copyright 2017 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
Object.defineProperty(Promise, Symbol.species, { value: 0 });
var p = new Promise(function() {});
try {
p.then();
assertUnreachable();
} catch(e) {
assertTrue(e instanceof TypeError);
}
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