1 files changed, 14 insertions, 0 deletions
diff --git a/deps/v8/test/mjsunit/regress/regress-observe-map-cache.js b/deps/v8/test/mjsunit/regress/regress-observe-map-cache.js
new file mode 100644
index 000000000..4c7a7e3e9
--- /dev/null
+++ b/deps/v8/test/mjsunit/regress/regress-observe-map-cache.js
@@ -0,0 +1,14 @@
+// Copyright 2014 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 --enable-slow-asserts
+
+function f() {
+  var x = new Array(0);
+  x[-1] = -1;
+  Object.observe(x, function() { });
+}
+
+f();
+f();