diff -r 4ebc2e2fb97c -r 71c04702a3d5 test/nashorn/script/basic/JDK-8073868.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/test/nashorn/script/basic/JDK-8073868.js	Tue Sep 12 19:03:39 2017 +0200
@@ -0,0 +1,45 @@
+/*
+ * Copyright (c) 2015, 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-8073868: Regex matching causes java.lang.ArrayIndexOutOfBoundsException: 64
+ *
+ * @test
+ * @run
+ */
+
+function test(input) {
+    var comma = input.indexOf(",");
+    Assert.assertEquals(/([^\s]+),(.*)+/.exec(input)[0], input.trimLeft());
+    Assert.assertEquals(/([^\s]+),(.*)+/.exec(input)[1], input.substring(0, comma).trimLeft());
+    Assert.assertEquals(/([^\s]+),(.*)+/.exec(input)[2], input.substring(comma + 1));
+    Assert.assertEquals(/(.*)+/.exec(input)[0], input);
+    Assert.assertEquals(/(.*)+/.exec(input)[1], input);
+}
+
+test(" xxxx,         xxx xxxxxx xxxxxxxxx xxxxxxx, xxxx xxxxx xxxxx ");
+test(" xxxx, xxx xxxxxx xxxxxxxxx xxxxxxx, xxxx xxxxx xxxxx ");
+test("x,         xxxxxxxxxx xxxxxxxxx xxxxxxx, xxxx xxxxx xxxxx ");
+
+Assert.assertEquals(/(?:\1a|())*/.exec("a")[0], "a");
+Assert.assertEquals(/(?:\1a|())*/.exec("a")[1], undefined);