mirror of https://github.com/tc39/test262.git
46 lines
1.7 KiB
JavaScript
46 lines
1.7 KiB
JavaScript
// This file was procedurally generated from the following sources:
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// - src/annex-b-fns/eval-func-init.case
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// - src/annex-b-fns/eval-func/direct-if-decl-else-decl-a.template
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/*---
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description: Variable binding is initialized to `undefined` in outer scope (IfStatement with a declaration in both statement positions in eval code)
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esid: sec-functiondeclarations-in-ifstatement-statement-clauses
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flags: [generated, noStrict]
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info: |
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The following rules for IfStatement augment those in 13.6:
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IfStatement[Yield, Return]:
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if ( Expression[In, ?Yield] ) FunctionDeclaration[?Yield] else Statement[?Yield, ?Return]
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if ( Expression[In, ?Yield] ) Statement[?Yield, ?Return] else FunctionDeclaration[?Yield]
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if ( Expression[In, ?Yield] ) FunctionDeclaration[?Yield] else FunctionDeclaration[?Yield]
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if ( Expression[In, ?Yield] ) FunctionDeclaration[?Yield]
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B.3.3.3 Changes to EvalDeclarationInstantiation
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[...]
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a. If declaredFunctionOrVarNames does not contain F, then
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i. If varEnvRec is a global Environment Record, then
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[...]
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ii. Else,
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i. Let bindingExists be varEnvRec.HasBinding(F).
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ii. If bindingExists is false, then
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i. Perform ! varEnvRec.CreateMutableBinding(F, true).
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ii. Perform ! varEnvRec.InitializeBinding(F, undefined).
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[...]
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---*/
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var init, changed;
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(function() {
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eval(
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'init = f;\
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f = 123;\
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changed = f;if (true) function f() { } else function _f() {}'
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);
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}());
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assert.sameValue(init, undefined, 'binding is initialized to `undefined`');
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assert.sameValue(changed, 123, 'binding is mutable');
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assert.throws(ReferenceError, function() {
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f;
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}, 'global binding is not created');
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