| // This file was procedurally generated from the following sources: |
| // - src/annex-b-fns/func-skip-early-err-try.case |
| // - src/annex-b-fns/func/if-stmt-else-decl.template |
| /*--- |
| description: Extension is observed when creation of variable binding would not produce an early error (try statement) (IfStatement with a declaration in the second statement position in function scope) |
| esid: sec-functiondeclarations-in-ifstatement-statement-clauses |
| 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. |
| [...] |
| |
| B.3.5 VariableStatements in Catch Blocks |
| |
| [...] |
| - It is a Syntax Error if any element of the BoundNames of CatchParameter |
| also occurs in the VarDeclaredNames of Block unless CatchParameter is |
| CatchParameter:BindingIdentifier and that element is only bound by a |
| VariableStatement, the VariableDeclarationList of a for statement, or the |
| ForBinding of a for-in statement. |
| ---*/ |
| |
| (function() { |
| assert.throws(ReferenceError, function() { |
| f; |
| }, 'An initialized binding is not created prior to evaluation'); |
| assert.sameValue( |
| typeof f, |
| 'undefined', |
| 'An uninitialized binding is not created prior to evaluation' |
| ); |
| |
| try { |
| throw {}; |
| } catch ({ f }) { |
| |
| if (false) ; else function f() { } |
| |
| } |
| |
| assert.throws(ReferenceError, function() { |
| f; |
| }, 'An initialized binding is not created following evaluation'); |
| assert.sameValue( |
| typeof f, |
| 'undefined', |
| 'An uninitialized binding is not created following evaluation' |
| ); |
| }()); |