blob: f9a2d957c37a408c4039b402410820ebcaf910d7 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
|
// Copyright (c) 2012 Ecma International. All rights reserved.
// This code is governed by the BSD license found in the LICENSE file.
/*---
esid: sec-array.prototype.lastindexof
description: >
Array.prototype.lastIndexOf - deleting property of prototype
causes prototype index property not to be visited on an Array
---*/
var arr = [0, , 2];
Object.defineProperty(arr, "20", {
get: function() {
delete Array.prototype[1];
return 0;
},
configurable: true
});
Array.prototype[1] = 1;
assert.sameValue(arr.lastIndexOf(1), -1, 'arr.lastIndexOf(1)');
reportCompare(0, 0);
|