mirror of
https://github.com/tc39/test262.git
synced 2025-11-04 05:33:50 +01:00
42 lines
1.5 KiB
JavaScript
42 lines
1.5 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-globaldeclarationinstantiation
|
|
es6id: 15.1.8
|
|
description: >
|
|
Declaration of function when there is no corresponding global property and
|
|
the global object is non-extensible
|
|
info: |
|
|
[...]
|
|
9. Let declaredFunctionNames be a new empty List.
|
|
10. For each d in varDeclarations, in reverse list order do
|
|
a. If d is neither a VariableDeclaration or a ForBinding, then
|
|
i. Assert: d is either a FunctionDeclaration or a
|
|
GeneratorDeclaration.
|
|
ii. NOTE If there are multiple FunctionDeclarations for the same name,
|
|
the last declaration is used.
|
|
iii. Let fn be the sole element of the BoundNames of d.
|
|
iv. If fn is not an element of declaredFunctionNames, then
|
|
1. Let fnDefinable be ? envRec.CanDeclareGlobalFunction(fn).
|
|
2. If fnDefinable is false, throw a TypeError exception.
|
|
|
|
8.1.1.4.16 CanDeclareGlobalFunction
|
|
|
|
1. Let envRec be the global Environment Record for which the method was
|
|
invoked.
|
|
2. Let ObjRec be envRec.[[ObjectRecord]].
|
|
3. Let globalObject be the binding object for ObjRec.
|
|
4. Let existingProp be ? globalObject.[[GetOwnProperty]](N).
|
|
5. If existingProp is undefined, return ? IsExtensible(globalObject).
|
|
---*/
|
|
|
|
var executed = false;
|
|
|
|
Object.preventExtensions(this);
|
|
|
|
assert.throws(TypeError, function() {
|
|
$262.evalScript('executed = true; function test262() {}');
|
|
});
|
|
|
|
assert.sameValue(executed, false);
|