unconstrained subtype in component declaration

[Victor Porton <porton@narod.ru>]

As I've told in my previous thread in c.l.a, I want a function to return two 
values.

A fragment of my real code:

   type Filename_And_Fragment is
      record
         Filename: String;
         Fragment: String;
      end record;

   function URI_String_To_Filename_And_Fragment(Str: String) return 
Filename_And_Fragment;

rdf-raptor-uri.ads:63:20: unconstrained subtype in component declaration

The compiler does not accept this. What to do? (I do not want to create a 
full fledged object with access-to-String fields and Get_*() accessors and 
Unchecked_Deallocation in finalization.)

Should I step back to "out" argument of a procedure instead of returning a  
record like this as a return value of a function? (there were reasons why 
this would be better).

Or should I just add two discriminants to the record?

After some practice with Ada, I feel that it is probably not that good as I 
thought earlier.

-- 
Victor Porton - http://portonvictor.org