mirror of https://github.com/tc39/test262.git
33 lines
1.3 KiB
JavaScript
33 lines
1.3 KiB
JavaScript
// Copyright (C) 2016 the V8 project authors. All rights reserved.
|
|
// This code is governed by the BSD license found in the LICENSE file.
|
|
/*---
|
|
esid: sec-evaldeclarationinstantiation
|
|
description: Newly-created local binding may be deleted
|
|
info: |
|
|
[...]
|
|
15. For each production f in functionsToInitialize, do
|
|
a. Let fn be the sole element of the BoundNames of f.
|
|
b. Let fo be the result of performing InstantiateFunctionObject for f
|
|
with argument lexEnv.
|
|
c. If varEnvRec is a global Environment Record, then
|
|
[...]
|
|
d. Else,
|
|
i. Let bindingExists be varEnvRec.HasBinding(fn).
|
|
ii. If bindingExists is false, then
|
|
1. Let status be ! varEnvRec.CreateMutableBinding(fn, true).
|
|
2. Assert: status is not an abrupt completion because of
|
|
validation preceding step 12.
|
|
3. Perform ! varEnvRec.InitializeBinding(fn, fo).
|
|
[...]
|
|
flags: [noStrict]
|
|
---*/
|
|
|
|
var initial, postDeletion;
|
|
(function() {
|
|
eval('initial = f; delete f; postDeletion = function() { f; }; function f() { return 33; }');
|
|
}());
|
|
|
|
assert.sameValue(typeof initial, 'function');
|
|
assert.sameValue(initial(), 33);
|
|
assert.throws(ReferenceError, postDeletion, 'binding may be deleted');
|