1 files changed, 36 insertions, 0 deletions
diff --git a/js/src/tests/test262/annexB/language/global-code/switch-case-global-existing-fn-update.js b/js/src/tests/test262/annexB/language/global-code/switch-case-global-existing-fn-update.js
new file mode 100644
index 0000000000..feec1ea5f4
--- /dev/null
+++ b/js/src/tests/test262/annexB/language/global-code/switch-case-global-existing-fn-update.js
@@ -0,0 +1,36 @@
+// This file was procedurally generated from the following sources:
+// - src/annex-b-fns/global-existing-fn-update.case
+// - src/annex-b-fns/global/switch-case.template
+/*---
+description: Variable-scoped binding is updated following evaluation (Function declaration in the `case` clause of a `switch` statement in the global scope)
+esid: sec-web-compat-globaldeclarationinstantiation
+flags: [generated, noStrict]
+info: |
+    B.3.3.2 Changes to GlobalDeclarationInstantiation
+    [...]
+    c. When the FunctionDeclaration f is evaluated, perform the following steps
+       in place of the FunctionDeclaration Evaluation algorithm provided in
+       14.1.21:
+
+       i. Let genv be the running execution context's VariableEnvironment.
+       ii. Let genvRec be genv's EnvironmentRecord.
+       ii. Let benv be the running execution context's LexicalEnvironment.
+       iv. Let benvRec be benv's EnvironmentRecord.
+       v. Let fobj be ! benvRec.GetBindingValue(F, false).
+       vi. Perform ? genvRec.SetMutableBinding(F, fobj, false).
+       vii. Return NormalCompletion(empty).
+---*/
+
+switch (1) {
+  case 1:
+    function f() { return 'inner declaration'; }
+}
+
+assert.sameValue(typeof f, 'function');
+assert.sameValue(f(), 'inner declaration');
+
+function f() {
+  return 'outer declaration';
+}
+
+reportCompare(0, 0);