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From: Simon Wright <simon@pushface.org>
Newsgroups: comp.lang.ada
Subject: Re: Interfacing enums with C
Date: Sun, 17 Aug 2014 20:39:01 +0100
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Date: 2014-08-17T20:39:01+01:00
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Victor Porton <porton@narod.ru> writes:

> type Option_Type is (A, B);
> for Option_Type'Size use Interfaces.C.unsigned'Size;
> for Option_Type use (A=>1, B=>2);

What's wrong with

   type Option_Type is (A, B)
      with Convention => C;
   for Option_Type use (A => 1, B => 2);

And your first interfacing convention is much better. IMO.