mirror of https://github.com/tc39/test262.git
45 lines
1.5 KiB
JavaScript
45 lines
1.5 KiB
JavaScript
// This file was procedurally generated from the following sources:
|
|
// - src/annex-b-fns/func-init.case
|
|
// - src/annex-b-fns/func/if-decl-else-decl-a.template
|
|
/*---
|
|
description: Variable binding is initialized to `undefined` in outer scope (IfStatement with a declaration in both statement positions in function scope)
|
|
esid: sec-functiondeclarations-in-ifstatement-statement-clauses
|
|
es6id: B.3.4
|
|
flags: [generated, noStrict]
|
|
info: >
|
|
The following rules for IfStatement augment those in 13.6:
|
|
|
|
IfStatement[Yield, Return]:
|
|
if ( Expression[In, ?Yield] ) FunctionDeclaration[?Yield] else Statement[?Yield, ?Return]
|
|
if ( Expression[In, ?Yield] ) Statement[?Yield, ?Return] else FunctionDeclaration[?Yield]
|
|
if ( Expression[In, ?Yield] ) FunctionDeclaration[?Yield] else FunctionDeclaration[?Yield]
|
|
if ( Expression[In, ?Yield] ) FunctionDeclaration[?Yield]
|
|
|
|
|
|
B.3.3.1 Changes to FunctionDeclarationInstantiation
|
|
|
|
[...]
|
|
2. If instantiatedVarNames does not contain F, then
|
|
a. Perform ! varEnvRec.CreateMutableBinding(F, false).
|
|
b. Perform varEnvRec.InitializeBinding(F, undefined).
|
|
c. Append F to instantiatedVarNames.
|
|
[...]
|
|
---*/
|
|
var init, changed;
|
|
|
|
(function() {
|
|
init = f;
|
|
f = 123;
|
|
changed = f;
|
|
|
|
if (true) function f() { } else function _f() {}
|
|
|
|
|
|
}());
|
|
|
|
assert.sameValue(init, undefined, 'binding is initialized to `undefined`');
|
|
assert.sameValue(changed, 123, 'binding is mutable');
|
|
assert.throws(ReferenceError, function() {
|
|
f;
|
|
}, 'global binding is not created');
|