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From: Victor Porton <porton@narod.ru>
Newsgroups: comp.lang.ada
Subject: Re: Interfacing enums with C
Date: Sun, 17 Aug 2014 22:48:08 +0300
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Date: 2014-08-17T22:48:08+03:00
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Victor Porton wrote:
> Simon Wright wrote:
>> 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);
> 
> http://www.ada-auth.org/standards/12rm/html/RM-B-1.html 14/3 - 18
> does not say that enumeration types are eligible for convention C.
> 
> So, in my opinion, RM does not require the following code to be
> compilable:
> 
>    type Option_Type is (A, B)
>       with Convention => C;
> 
>> And your first interfacing convention is much better. IMO.

BTW, I could propose enumeration type to be eligible for Convention C in the 
next version of Ada RM!

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