1 files changed, 45 insertions, 0 deletions
diff --git a/js/src/tests/test262/annexB/language/function-code/if-decl-else-decl-b-func-init.js b/js/src/tests/test262/annexB/language/function-code/if-decl-else-decl-b-func-init.js
new file mode 100644
index 0000000000..d1b30c8891
--- /dev/null
+++ b/js/src/tests/test262/annexB/language/function-code/if-decl-else-decl-b-func-init.js
@@ -0,0 +1,45 @@
+// 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-b.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
+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 (false) 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');
+
+reportCompare(0, 0);