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diff --git a/js/src/tests/test262/annexB/language/function-code/if-stmt-else-decl-func-existing-var-update.js b/js/src/tests/test262/annexB/language/function-code/if-stmt-else-decl-func-existing-var-update.js
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index 0000000000..03f9416a2a
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+++ b/js/src/tests/test262/annexB/language/function-code/if-stmt-else-decl-func-existing-var-update.js
@@ -0,0 +1,48 @@
+// This file was procedurally generated from the following sources:
+// - src/annex-b-fns/func-existing-var-update.case
+// - src/annex-b-fns/func/if-stmt-else-decl.template
+/*---
+description: Variable-scoped binding is updated following evaluation (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
+
+ [...]
+ 3. When the FunctionDeclaration f is evaluated, perform the following steps
+ in place of the FunctionDeclaration Evaluation algorithm provided in
+ 14.1.21:
+ a. Let fenv be the running execution context's VariableEnvironment.
+ b. Let fenvRec be fenv's EnvironmentRecord.
+ c. Let benv be the running execution context's LexicalEnvironment.
+ d. Let benvRec be benv's EnvironmentRecord.
+ e. Let fobj be ! benvRec.GetBindingValue(F, false).
+ f. Perform ! fenvRec.SetMutableBinding(F, fobj, false).
+ g. Return NormalCompletion(empty).
+---*/
+var after;
+
+(function() {
+
+
+ if (false) ; else function f() { return 'function declaration'; }
+
+ after = f;
+
+ var f = 123;
+}());
+
+assert.sameValue(typeof after, 'function');
+assert.sameValue(after(), 'function declaration');
+
+
+reportCompare(0, 0);