| // Copyright 2014 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. | |
| "use strict"; | |
| var obj = { | |
| "length": -6, | |
| "1": "A", | |
| "3": "B", | |
| "5": "C" | |
| }; | |
| obj[Symbol.isConcatSpreadable] = true; | |
| assertEquals([], [].concat(obj)); | |
| obj.length = -6.7; | |
| assertEquals([], [].concat(obj)); | |
| obj.length = "-6"; | |
| assertEquals([], [].concat(obj)); |