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-rw-r--r--js/src/tests/test262/annexB/language/function-code/switch-dflt-func-existing-block-fn-update.js43
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diff --git a/js/src/tests/test262/annexB/language/function-code/switch-dflt-func-existing-block-fn-update.js b/js/src/tests/test262/annexB/language/function-code/switch-dflt-func-existing-block-fn-update.js
new file mode 100644
index 0000000000..83b4326ac3
--- /dev/null
+++ b/js/src/tests/test262/annexB/language/function-code/switch-dflt-func-existing-block-fn-update.js
@@ -0,0 +1,43 @@
+// This file was procedurally generated from the following sources:
+// - src/annex-b-fns/func-existing-block-fn-update.case
+// - src/annex-b-fns/func/switch-dflt.template
+/*---
+description: Variable-scoped binding is updated (Funtion declaration in the `default` clause of a `switch` statement in function scope)
+esid: sec-web-compat-functiondeclarationinstantiation
+flags: [generated, noStrict]
+info: |
+ 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 updated;
+
+(function() {
+ {
+ function f() {
+ return 'first declaration';
+ }
+ }
+
+ switch (1) {
+ default:
+ function f() { return 'second declaration'; }
+ }
+
+ updated = f;
+}());
+
+assert.sameValue(typeof updated, 'function');
+assert.sameValue(updated(), 'second declaration');
+
+reportCompare(0, 0);