blob: 643b11831decfe26ccb8c8e9e3470b240c09745d (
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
26
27
28
29
30
31
32
33
34
35
|
// Copyright (C) 2023 Alexey Shvayka. All rights reserved.
// This code is governed by the BSD license found in the LICENSE file.
/*---
esid: sec-globaldeclarationinstantiation
description: No let binding collision with existing var declaration due to eval().
info: |
In strict mode:
PerformEval ( x, strictCaller, direct )
[...]
16. If direct is true, then
a. Let lexEnv be NewDeclarativeEnvironment(runningContext's LexicalEnvironment).
[...]
18. If strictEval is true, set varEnv to lexEnv.
In sloppy mode:
GlobalDeclarationInstantiation ( script, env )
[...]
3. For each element name of lexNames, do
a. If env.HasLexicalDeclaration(name) is true, throw a SyntaxError exception.
b. Let hasRestrictedGlobal be ? env.HasRestrictedGlobalProperty(name).
c. NOTE: Global var and function bindings (except those that are introduced by non-strict direct eval) are non-configurable and are therefore restricted global properties.
d. If hasRestrictedGlobal is true, throw a SyntaxError exception.
---*/
eval('if (true) { function test262Fn() {} }');
$262.evalScript('let test262Fn = 1;');
assert.sameValue(test262Fn, 1);
reportCompare(0, 0);
|