test262/implementation-contributed/v8/mjsunit/regress/regress-crbug-728813.js

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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.
var p = new Proxy({}, {
has: function () { throw "nope"; }
});
p.length = 2;
assertThrows(() => Array.prototype.indexOf.call(p));