test/sun/util/calendar/zi/Rule.java

@@ -124,10 +124,19 @@
                     return this == o;
                 }
             });
         rules.clear();
         for (int i = 0; i < n; i++) {
+
+if (i != 0 && recs[i -1].getSave() == recs[i].getSave()) {
+    // we have two recs back to back with same saving for the same year.
+    if (recs[i].isLastRule()) {
+        continue;
+    } else if (recs[i - 1].isLastRule()) {
+        rules.remove(rules.size() - 1);
+    }
+}
             rules.add(recs[i]);
         }
         return rules;
     }