--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/nashorn/test/script/basic/JDK-8011893.js	Wed Jun 12 16:41:38 2013 +0200
@@ -0,0 +1,51 @@
+/*
+ * Copyright (c) 2010, 2013, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ * 
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ * 
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ * 
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ * 
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+/**
+ * JDK-8011893: JS Object builtin prototype is not thread safe
+ *
+ * @test
+ * @run
+ */
+
+var a = {};
+var thread = new java.lang.Thread(new java.lang.Runnable() {
+    run: function() {
+        print("Thread starts");
+        for (var i = 0; i < 1000000; i++) {
+            // Unsubscribe to builtin, subscribe to new proto
+            var b = Object.create(a);
+        }
+        print("Thread done");
+    }
+});
+
+print("Main starts");
+thread.start();
+for (var j = 0; j < 1000000; j++) {
+    // Subscribe to builtin prototype.
+    a = {};
+}
+
+thread.join();
+print("Main done");