X-Git-Url: http://matita.cs.unibo.it/gitweb/?a=blobdiff_plain;f=helm%2Focaml%2Ftactics%2FproofEngineReduction.ml;h=fca06f6f078301430648759b07c445d5955e6f0f;hb=b555e6b8c27c765a4611dda9528963ebff116412;hp=755a098547eb4e6d13c75ed1c807c888727d5151;hpb=aa0d60227b785da3355b31519ba11cb4fbd2c925;p=helm.git

diff --git a/helm/ocaml/tactics/proofEngineReduction.ml b/helm/ocaml/tactics/proofEngineReduction.ml
index 755a09854..fca06f6f0 100644
--- a/helm/ocaml/tactics/proofEngineReduction.ml
+++ b/helm/ocaml/tactics/proofEngineReduction.ml
@@ -631,7 +631,7 @@ let simpl context =
     | C.Sort _ as t -> t (* l should be empty *)
     | C.Implicit _ as t -> t
     | C.Cast (te,ty) ->
-       C.Cast (reduceaux context l te, reduceaux context l ty)
+       C.Cast (reduceaux context l te, reduceaux context [] ty)
     | C.Prod (name,s,t) ->
        assert (l = []) ;
        C.Prod (name,
@@ -695,18 +695,16 @@ let simpl context =
               in
                reduceaux context [] body'
          | C.Appl (C.CoFix (i,fl) :: tl) ->
-            let tys =
-             List.map (function (name,ty,_) -> Some (C.Name name, C.Decl ty)) fl            in
              let (_,_,body) = List.nth fl i in
-              let body' =
-               let counter = ref (List.length fl) in
-                List.fold_right
-                 (fun _ -> decr counter ; S.subst (C.CoFix (!counter,fl)))
-                 fl
-                 body
-              in
-               let tl' = List.map (reduceaux context []) tl in
-                reduceaux context tl' body'
+             let body' =
+              let counter = ref (List.length fl) in
+               List.fold_right
+                (fun _ -> decr counter ; S.subst (C.CoFix (!counter,fl)))
+                fl
+                body
+             in
+              let tl' = List.map (reduceaux context []) tl in
+               reduceaux context tl' body'
          | t -> t
        in
         (match decofix (CicReduction.whd context term) with