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
26
|
// Copyright (C) 2015 André Bargull. All rights reserved.
// This code is governed by the BSD license found in the LICENSE file.
/*---
info: Mapped arguments object with non-configurable property
description: >
Mapped arguments property is changed to non-writable and
non-configurable. Perform property attribute changes with two
[[DefineOwnProperty]] calls. Add intervening call to
[[DefineOwnProperty]].
flags: [noStrict]
---*/
function argumentsNonWritableThenNonConfigurableWithInterveningDefineOwnProperty(a) {
Object.defineProperty(arguments, "0", {writable: false});
Object.defineProperty(arguments, "0", {value: 2});
Object.defineProperty(arguments, "0", {configurable: false});
assert.sameValue(a, 1);
assert.sameValue(arguments[0], 2);
// Postcondition: Arguments mapping is removed.
a = 3;
assert.sameValue(a, 3);
assert.sameValue(arguments[0], 2);
}
argumentsNonWritableThenNonConfigurableWithInterveningDefineOwnProperty(1);
|
