src/HOL/Tools/BNF/bnf_gfp.ML

--- a/src/HOL/Tools/BNF/bnf_gfp.ML	Mon May 26 16:33:06 2014 +0200
+++ b/src/HOL/Tools/BNF/bnf_gfp.ML	Mon May 26 16:58:38 2014 +0200
@@ -1267,7 +1267,7 @@
     val ((T_names, (T_glob_infos, T_loc_infos)), lthy) =
       lthy
       |> fold_map4 (fn b => fn mx => fn car_final => fn in_car_final =>
-        typedef (Binding.conceal b, params, mx) car_final NONE
+        typedef (b, params, mx) car_final NONE
           (EVERY' [rtac exI, rtac in_car_final] 1)) bs mixfixes car_finals in_car_final_thms
       |>> apsnd split_list o split_list;