--- old/src/share/classes/sun/util/locale/provider/CalendarNameProviderImpl.java	Wed Feb  6 11:40:45 2013
+++ new/src/share/classes/sun/util/locale/provider/CalendarNameProviderImpl.java	Wed Feb  6 11:40:43 2013
@@ -58,6 +58,9 @@
                 if (field == DAY_OF_WEEK || field == YEAR) {
                     --value;
                 }
+                if (value < 0 || value >= strings.length) {
+                    return null;
+                }
                 name = strings[value];
                 // If name is empty in standalone, try its `format' style.
                 if (name.length() == 0