--- a/nashorn/src/jdk/nashorn/internal/runtime/JSONFunctions.java	Mon Apr 29 13:21:17 2013 +0200
+++ b/nashorn/src/jdk/nashorn/internal/runtime/JSONFunctions.java	Mon Apr 29 18:40:40 2013 +0530
@@ -105,9 +105,7 @@
     // This is the abstract "Walk" operation from the spec.
     private static Object walk(final ScriptObject holder, final Object name, final ScriptFunction reviver) {
         final Object val = holder.get(name);
-        if (val == ScriptRuntime.UNDEFINED) {
-            return val;
-        } else if (val instanceof ScriptObject) {
+        if (val instanceof ScriptObject) {
             final ScriptObject     valueObj = (ScriptObject)val;
             final boolean          strict   = valueObj.isStrictContext();
             final Iterator<String> iter     = valueObj.propertyIterator();
@@ -122,33 +120,15 @@
                     valueObj.set(key, newElement, strict);
                 }
             }
-
-            return valueObj;
-        } else if (isArray(val)) {
-            final ScriptObject      valueArray = (ScriptObject)val;
-            final boolean          strict     = valueArray.isStrictContext();
-            final Iterator<String> iter       = valueArray.propertyIterator();
-
-            while (iter.hasNext()) {
-                final String key        = iter.next();
-                final Object newElement = walk(valueArray, valueArray.get(key), reviver);
+        }
 
-                if (newElement == ScriptRuntime.UNDEFINED) {
-                    valueArray.delete(key, strict);
-                } else {
-                    valueArray.set(key, newElement, strict);
-                }
-            }
-            return valueArray;
-        } else {
-            try {
-                // Object.class, ScriptFunction.class, ScriptObject.class, String.class, Object.class);
-                return REVIVER_INVOKER.invokeExact(reviver, holder, JSType.toString(name), val);
-            } catch(Error|RuntimeException t) {
-                throw t;
-            } catch(final Throwable t) {
-                throw new RuntimeException(t);
-            }
+        try {
+             // Object.class, ScriptFunction.class, ScriptObject.class, String.class, Object.class);
+             return REVIVER_INVOKER.invokeExact(reviver, holder, JSType.toString(name), val);
+        } catch(Error|RuntimeException t) {
+            throw t;
+        } catch(final Throwable t) {
+            throw new RuntimeException(t);
         }
     }
 

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/nashorn/test/script/basic/JDK-8013444.js	Mon Apr 29 18:40:40 2013 +0530
@@ -0,0 +1,49 @@
+/*
+ * 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-8013444: JSON.parse does not invoke "reviver" callback as per spec.
+ *
+ * @test
+ * @run
+ */
+
+
+var type = typeof JSON.parse('{}',function(){})
+print("type is " + type);
+
+var obj = JSON.parse('{"name": "nashorn"}', 
+    function(k, v) {
+        if (k === "") return v;
+        return v.toUpperCase();
+    });
+print(JSON.stringify(obj))
+
+var array = 
+  JSON.parse("[1, 3, 5, 7, 9, 11]",
+   function(k, v) {
+      if (k === "") return v;
+      return v*2;
+   }
+ );
+print(array)

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/nashorn/test/script/basic/JDK-8013444.js.EXPECTED	Mon Apr 29 18:40:40 2013 +0530
@@ -0,0 +1,3 @@
+type is undefined
+{"name":"NASHORN"}
+2,6,10,14,18,22