Re: using the 'use at' feature inside a record?

[Stephen Leake <stephen_leake@stephe-leake.org>]

PForan <pforan@gmail.com> writes:

> I have a question about the "use at" feature and how it can be used
> inside a record to simulate C's unions. I often have an array of
> bytes, as well as a string which is "use at"'ed on top of the byte
> buffer, very useful as I can play with the data in any way I choose.
> i.e.
>
> byte_buf: array(1..100) of unsigned_8;
> str_buf: string(1..100);
> for str_buf use at byte_buf'address;
>
> Is it possible to have something like this within a record?

'use at' is obsolete (LRM J.7); you should now use:

for str_buf'address use byte_buf'address;


If you are implementing an Ada variant record type that must match a C
union type that has no field for the discriminant, use pragma
Unchecked_Union (LRM B.3.3).

-- 
-- Stephe