Strict mode Failing
Expected no error, got ESHostError: Expected obj[f] to have configurable:true.
non-Strict mode Failing
Expected no error, got ESHostError: Expected obj[f] to have configurable:true.
Features:
- ∅
Expected no error, got ESHostError: Expected obj[f] to have configurable:true.
Expected no error, got ESHostError: Expected obj[f] to have configurable:true.
// 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: Modification of previously-existing configurable global property
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
i. Perform ? varEnvRec.CreateGlobalFunctionBinding(fn, fo, true).
[...]
8.1.1.4.18 CreateGlobalFunctionBinding
[...]
5. If existingProp is undefined or existingProp.[[Configurable]] is true,
then
a. Let desc be the PropertyDescriptor{[[Value]]: V, [[Writable]]: true,
[[Enumerable]]: true, [[Configurable]]: D}.
6. Else,
[...]
7. Perform ? DefinePropertyOrThrow(globalObject, N, desc).
[...]
includes: [propertyHelper.js]
---*/
var initial = null;
Object.defineProperty(this, 'f', {
enumerable: false,
writable: false,
configurable: true
});
(0, eval)('initial = f; function f() { return 345; }');
verifyProperty(this, 'f', {
writable: true,
enumerable: true,
configurable: true,
});
assert.sameValue(typeof initial, 'function');
assert.sameValue(initial(), 345);