protected invocations to get_cooked_obj with assertion failures

diff --git a/helm/ocaml/cic_omdoc/doubleTypeInference.ml b/helm/ocaml/cic_omdoc/doubleTypeInference.ml
index ea29f46fa456e2a4cde51ba1806bdb4d6a873c81..5b0cc01fc438ebd695508f635fd6bab8f77c6c86 100644 (file)
--- a/helm/ocaml/cic_omdoc/doubleTypeInference.ml
+++ b/helm/ocaml/cic_omdoc/doubleTypeInference.ml
@@ -541,7 +541,12 @@ let rec type_of_aux' subterms_to_types metasenv context t expectedty =
          (* Checks suppressed *)
          (* Let's visit all the subterms that will not be visited later *)
          let (cl,parsno) =
-          match CicEnvironment.get_cooked_obj uri with
+           let obj =
+             try
+               CicEnvironment.get_cooked_obj uri
+             with Not_found -> assert false
+           in
+          match obj with
              C.InductiveDefinition (tl,_,parsno) ->
               let (_,_,_,cl) = List.nth tl i in (cl,parsno)
            | _ ->
@@ -639,14 +644,24 @@ let rec type_of_aux' subterms_to_types metasenv context t expectedty =
 
  and visit_exp_named_subst context uri exp_named_subst =
   let uris_and_types =
-   match CicEnvironment.get_cooked_obj uri with
+     let obj =
+       try
+         CicEnvironment.get_cooked_obj uri
+       with Not_found -> assert false
+     in
+    match obj with
       Cic.Constant (_,_,_,params)
     | Cic.CurrentProof (_,_,_,_,params)
     | Cic.Variable (_,_,_,params)
     | Cic.InductiveDefinition (_,params,_) ->
        List.map
         (function uri ->
-          match CicEnvironment.get_cooked_obj uri with
+           let obj =
+             try
+               CicEnvironment.get_cooked_obj uri
+             with Not_found -> assert false
+           in
+           match obj with
              Cic.Variable (_,None,ty,_) -> uri,ty
            | _ -> assert false (* the theorem is well-typed *)
         ) params