anchor.diff:              ErrorDesc
       end.
   
  +-ifdef(have_new_stacktrace).
   % @doc called before the actual test to convert the input values. Can
   % be used to implement types which cannot be expressed by type-specs
   apply_feeder(Module, Func, Args, ResultType, TypeInfos) ->
  
positive.code:                  util:get_stacktrace(), util:get_linetrace()}
          end
      catch
          Error:Reason ->
              ct:pal("Reason: ~p~n", [Reason]),
              {fail, no_result, no_result_type, Error, Module,
               FeederFun,
               Args,
               Reason, util:get_stacktrace(), util:get_linetrace()}
      end.
  
  apply_args(Module, Func, Args, ResultType, TypeInfos, Thread) ->
  
negative.code:     Fun = get_arg_and_result_type(FunType, FeederFunType, Options),
      {var_fun, VarList, {'fun', ArgType, ResultType}} = Fun,
      Size = 30,
      GenArgs = tryToCreateValue(VarList, ArgType, Size, TypeInfos),
      case GenArgs of
          {ok, Args} ->
              case proplists:get_bool(with_feeder, Options) of
  