1 files changed, 15 insertions, 0 deletions
diff --git a/deps/v8/test/mjsunit/regress/regress-4970.js b/deps/v8/test/mjsunit/regress/regress-4970.js
new file mode 100644
index 0000000000..da0033b34f
--- /dev/null
+++ b/deps/v8/test/mjsunit/regress/regress-4970.js
@@ -0,0 +1,15 @@
+// Copyright 2016 the V8 project authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+//
+// Flags: --allow-natives-syntax
+
+function g() {
+  var f;
+  class C extends eval("f = () => delete C; Array") {}
+  f();
+}
+
+assertThrows(g, SyntaxError);
+%OptimizeFunctionOnNextCall(g);
+assertThrows(g, SyntaxError);