Melange_compiler_libs.Translclassval transl_class : 
  scopes:Debuginfo.Scoped_location.scopes ->
  Ident.t list ->
  Ident.t ->
  string list ->
  Typedtree.class_expr ->
  Asttypes.virtual_flag ->
  Lambda.lambdaexception Error of Location.t * errorval report_error : Stdlib.Format.formatter -> error -> unit