Re: Advice on low level file handling.

[Georg Bauhaus <bauhaus@futureapps.de>]

Peter C. Chapin wrote:

> Also I need to count the number of bytes I process and the quantity may 
> exceed 2**32. I can define a 64 bit modular type and that seems to work 
> fine on gnat. Is that portable? I'm not extremely worried about 
> portability, but I'd rather not sacrifice it for no reason.

That's nice to hear when someone at least thinks about
portability :-)

package More is

   type Count is range 0 .. 2**50;

end More;

with More;
procedure More.try_it is
   x: Count;
begin
   x := 2**40;
end;

Using similar front ends (first is ObjectAda for Windows native,
second is AppletMagic), but different backends,

...\> adamake more.try_it
more.ada: Error: line 3 col 26 LRM:3.5.4(6),
  subtype bounds must be between System.Min_Int and System.Max_Int,
  returning plastic subtype
(etc, failing)

... \> adajava more.try_it

Front end of ..\more.ads succeeded with no errors.