1 files changed, 57 insertions, 0 deletions
diff --git a/js/src/tests/test262/language/expressions/async-arrow-function/dflt-params-rest.js b/js/src/tests/test262/language/expressions/async-arrow-function/dflt-params-rest.js
new file mode 100644
index 0000000000..b6fc000ba1
--- /dev/null
+++ b/js/src/tests/test262/language/expressions/async-arrow-function/dflt-params-rest.js
@@ -0,0 +1,57 @@
+// |reftest| error:SyntaxError
+// This file was procedurally generated from the following sources:
+// - src/function-forms/dflt-params-rest.case
+// - src/function-forms/syntax/async-arrow-function.template
+/*---
+description: RestParameter does not support an initializer (async arrow function expression)
+esid: sec-async-arrow-function-definitions
+features: [default-parameters]
+flags: [generated]
+negative:
+  phase: parse
+  type: SyntaxError
+info: |
+    14.7 Async Arrow Function Definitions
+
+    AsyncArrowFunction :
+      ...
+      CoverCallExpressionAndAsyncArrowHead => AsyncConciseBody
+
+    AsyncConciseBody :
+      { AsyncFunctionBody }
+
+    ...
+
+    Supplemental Syntax
+
+    When processing an instance of the production AsyncArrowFunction :
+    CoverCallExpressionAndAsyncArrowHead => AsyncConciseBody the interpretation of
+    CoverCallExpressionAndAsyncArrowHead is refined using the following grammar:
+
+    AsyncArrowHead :
+      async ArrowFormalParameters
+
+    14.1 Function Definitions
+
+    Syntax
+
+    FunctionRestParameter[Yield] :
+
+      BindingRestElement[?Yield]
+
+    13.3.3 Destructuring Binding Patterns
+
+    Syntax
+
+    BindingRestElement[Yield] :
+
+      ...BindingIdentifier[?Yield]
+      ...BindingPattern[?Yield]
+
+---*/
+$DONOTEVALUATE();
+
+
+(async (...x = []) => {
+  
+});