--- a/nashorn/src/jdk/nashorn/internal/objects/NativeArray.java	Fri Oct 18 22:42:41 2013 +0200
+++ b/nashorn/src/jdk/nashorn/internal/objects/NativeArray.java	Tue Oct 22 14:27:52 2013 +0530
@@ -1163,12 +1163,16 @@
         try {
             final ScriptObject sobj = (ScriptObject)Global.toObject(self);
             final long         len  = JSType.toUint32(sobj.getLength());
-            final long         n    = JSType.toLong(fromIndex);
-
-            if (len == 0 || n >= len) {
+            if (len == 0) {
                 return -1;
             }
 
+            final long         n = JSType.toLong(fromIndex);
+            if (n >= len) {
+                return -1;
+            }
+
+
             for (long k = Math.max(0, (n < 0) ? (len - Math.abs(n)) : n); k < len; k++) {
                 if (sobj.has(k)) {
                     if (ScriptRuntime.EQ_STRICT(sobj.get(k), searchElement)) {

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/nashorn/test/script/basic/JDK-8027016.js	Tue Oct 22 14:27:52 2013 +0530
@@ -0,0 +1,42 @@
+/*
+ * 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-8027016: Array.prototype.indexOf should return -1 when array is of length zero
+ *
+ * @test
+ * @run
+ */
+
+var res = [].indexOf(null, {valueOf:function(){throw "not reached"}});
+if (res != -1) {
+    fail("expected -1 on indexOf on empty array");
+}
+
+// add index beyond length check as well
+
+res = [].indexOf(null, 1);
+if (res != -1) {
+    fail("expected -1 on indexOf on empty array");
+}
+