X-Git-Url: http://matita.cs.unibo.it/gitweb/?a=blobdiff_plain;ds=sidebyside;f=helm%2Focaml%2Fcic_unification%2FcicRefine.ml;h=5c031f4733b6806f2da7c1b9ef683d8d589112ec;hb=91a095f0686ee569ba035e4e30c7d071588cb8e7;hp=42069ff5cb92ef6d6c7266d15c0725acc737937c;hpb=358cefe50cccd4cb7d8e2a9cecb7efcb5780b8a3;p=helm.git

diff --git a/helm/ocaml/cic_unification/cicRefine.ml b/helm/ocaml/cic_unification/cicRefine.ml
index 42069ff5c..5c031f473 100644
--- a/helm/ocaml/cic_unification/cicRefine.ml
+++ b/helm/ocaml/cic_unification/cicRefine.ml
@@ -287,7 +287,7 @@ and type_of_aux' metasenv context t ugraph =
 	       * Moreover the inferred type is closer to the expected one. 
                *)
 	      C.LetIn (n,s',t'),CicSubstitution.subst s' inferredty,
-                subst',metasenv',ugraph2
+                subst'',metasenv'',ugraph2
 	| C.Appl (he::((_::_) as tl)) ->
 	    let he',hetype,subst',metasenv',ugraph1 = 
 	      type_of_aux subst metasenv context he ugraph 
@@ -995,7 +995,15 @@ let typecheck metasenv uri obj =
      assert (metasenv' = metasenv);
      (* Here we do not check the metasenv for correctness *)
      let bo',boty,metasenv,ugraph = type_of_aux' metasenv [] bo ugraph in
-     let ty',_,metasenv,ugraph = type_of_aux' metasenv [] ty ugraph in
+     let ty',sort,metasenv,ugraph = type_of_aux' metasenv [] ty ugraph in
+     begin
+      match sort with
+         Cic.Sort _
+       (* instead of raising Uncertain, let's hope that the meta will become
+          a sort *)
+       | Cic.Meta _ -> ()
+       | _ -> raise (RefineFailure "The term provided is not a type")
+     end;
      let subst,metasenv,ugraph = fo_unif_subst [] [] metasenv boty ty' ugraph in
      let bo' = CicMetaSubst.apply_subst subst bo' in
      let ty' = CicMetaSubst.apply_subst subst ty' in
@@ -1037,7 +1045,7 @@ let typecheck metasenv uri obj =
                    let t = CicSubstitution.subst t' t in
                     i - 1,t
                  ) tys (typesno - 1,t)) in
-             let ty' = undebrujin ty in
+             let ty' = undebrujin ty' in
               metasenv,ugraph,(name,ty')::res
            ) cl (metasenv,ugraph,[])
          in