X-Git-Url: http://matita.cs.unibo.it/gitweb/?a=blobdiff_plain;f=matita%2Fcomponents%2Fgrafite_engine%2FgrafiteTypes.ml;h=7cb6bef0c37877feb62dd3bf90bd8755e181d2f1;hb=1a11ddfaed43c681cf15f180b90ad429e092a219;hp=06cf9b9687d5a43c6cf96bf0b3129e717cc3c586;hpb=75f910c7001ba5a6abe61fc93a2731753c7ba188;p=helm.git

diff --git a/matita/components/grafite_engine/grafiteTypes.ml b/matita/components/grafite_engine/grafiteTypes.ml
index 06cf9b968..7cb6bef0c 100644
--- a/matita/components/grafite_engine/grafiteTypes.ml
+++ b/matita/components/grafite_engine/grafiteTypes.ml
@@ -31,7 +31,7 @@ exception Command_error of string
 
 let command_error msg = raise (Command_error msg)
 
-class status = fun (b : string) ->
+class virtual status = fun (b : string) ->
  let fake_obj =
   NUri.uri_of_string "cic:/matita/dummy.decl",0,[],[],
    NCic.Constant([],"",None,NCic.Implicit `Closed,(`Provided,`Theorem,`Regular))