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--- a/src/rcldb/rcldb.h
+++ b/src/rcldb/rcldb.h
@@ -171,6 +171,8 @@
 		   const string& field = "",
                    string *prefix = 0
         );
+    /** Return min and max years for doc mod times in db */
+    bool maxYearSpan(int *minyear, int *maxyear);
 
     /** Special filename wildcard to XSFN terms expansion.
 	internal/searchdata use only */