1 files changed, 25 insertions, 0 deletions
diff --git a/deps/v8/test/mjsunit/regress/regress-8449.js b/deps/v8/test/mjsunit/regress/regress-8449.js
new file mode 100644
index 0000000000..32fa82aa6e
--- /dev/null
+++ b/deps/v8/test/mjsunit/regress/regress-8449.js
@@ -0,0 +1,25 @@
+// Copyright 2018 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.
+
+{
+  const x = [, 1];
+  x.__proto__ = [42];
+  const y = [...x];
+  assertEquals([42, 1], y);
+  assertTrue(y.hasOwnProperty(0));
+}
+
+{
+  const x = [, 1];
+  x.__proto__ = [42];
+  assertEquals(42, x[Symbol.iterator]().next().value);
+}
+
+{
+  const array_prototype = [].__proto__;
+  array_prototype[0] = 42;
+  const x = [, 1];
+  assertEquals(42, x[Symbol.iterator]().next().value);
+  delete array_prototype[0];
+}