12 lines
385 B
JavaScript
12 lines
385 B
JavaScript
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// Copyright 2014 the V8 project authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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"use strict";
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var obj = { length: 5 };
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obj[Symbol.isConcatSpreadable] = true;
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assertEquals([void 0, void 0, void 0, void 0, void 0], [].concat(obj));
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obj.length = 4000;
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assertEquals(new Array(4000), [].concat(obj));
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