X-Git-Url: http://matita.cs.unibo.it/gitweb/?a=blobdiff_plain;f=helm%2Focaml%2Fcic_proof_checking%2FcicElim.ml;h=60cf5af2e60031a37579b791985b287a63576a98;hb=8b55faddb06e3c4b0a13839210bb49170939b33e;hp=e3fca907dd562f494a479333400c33ef069f08b8;hpb=f268a4b949ad0ac525f73dbd5116722c2ca6f552;p=helm.git

diff --git a/helm/ocaml/cic_proof_checking/cicElim.ml b/helm/ocaml/cic_proof_checking/cicElim.ml
index e3fca907d..60cf5af2e 100644
--- a/helm/ocaml/cic_proof_checking/cicElim.ml
+++ b/helm/ocaml/cic_proof_checking/cicElim.ml
@@ -25,11 +25,11 @@
 
 open Printf
 
-exception Elim_failure of string
+exception Elim_failure of string Lazy.t
 exception Can_t_eliminate
 
 let debug_print = fun _ -> ()
-(*let debug_print = prerr_endline *)
+(*let debug_print s = prerr_endline (Lazy.force s) *)
 
 let counter = ref ~-1 ;;
 
@@ -367,24 +367,24 @@ let elim_of ?(sort = Cic.Type (CicUniv.fresh ())) uri typeno =
         add_params (fun b s t -> Cic.Lambda (b, s, t)) leftno ty cic
       in
 (*
-debug_print (CicPp.ppterm eliminator_type);
-debug_print (CicPp.ppterm eliminator_body);
+debug_print (lazy (CicPp.ppterm eliminator_type));
+debug_print (lazy (CicPp.ppterm eliminator_body));
 *)
       let eliminator_type = 
 	FreshNamesGenerator.mk_fresh_names [] [] [] eliminator_type in
       let eliminator_body = 
 	FreshNamesGenerator.mk_fresh_names [] [] [] eliminator_body in
 (*
-debug_print (CicPp.ppterm eliminator_type);
-debug_print (CicPp.ppterm eliminator_body);
+debug_print (lazy (CicPp.ppterm eliminator_type));
+debug_print (lazy (CicPp.ppterm eliminator_body));
 *)
       let (computed_type, ugraph) =
         try
           CicTypeChecker.type_of_aux' [] [] eliminator_body CicUniv.empty_ugraph
         with CicTypeChecker.TypeCheckerFailure msg ->
-          raise (Elim_failure (sprintf 
+          raise (Elim_failure (lazy (sprintf 
             "type checker failure while type checking:\n%s\nerror:\n%s"
-            (CicPp.ppterm eliminator_body) msg))
+            (CicPp.ppterm eliminator_body) (Lazy.force msg))))
       in
       if not (fst (CicReduction.are_convertible []
         eliminator_type computed_type ugraph))