| // 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. | |
| var sparse_array = []; | |
| sparse_array[100] = 3; | |
| sparse_array[200] = undefined; | |
| sparse_array[300] = 4; | |
| sparse_array[400] = 5; | |
| sparse_array[500] = 6; | |
| sparse_array[600] = 5; | |
| sparse_array[700] = 4; | |
| sparse_array[800] = undefined; | |
| sparse_array[900] = 3 | |
| sparse_array[41999] = "filler"; | |
| sparse_array.lastIndexOf(3, 99); |