From mboxrd@z Thu Jan  1 00:00:00 1970
X-Spam-Checker-Version: SpamAssassin 3.4.4 (2020-01-24) on polar.synack.me
X-Spam-Level: 
X-Spam-Status: No, score=-0.3 required=5.0 tests=BAYES_00,
	REPLYTO_WITHOUT_TO_CC autolearn=no autolearn_force=no version=3.4.4
X-Google-Thread: a07f3367d7,d4984245154c8ef1
X-Google-Attributes: gida07f3367d7,public,usenet
X-Google-NewGroupId: yes
X-Google-Language: ENGLISH,ASCII
Path: 
 g2news2.google.com!news4.google.com!feeder.news-service.com!newsfeed.straub-nv.de!newsfeed01.sul.t-online.de!t-online.de!newsfeed.arcor.de!newsspool3.arcor-online.net!news.arcor.de.POSTED!not-for-mail
From: "Dmitry A. Kazakov" <mailbox@dmitry-kazakov.de>
Subject: Re: Interfacing C type, unconstrained array with record
Newsgroups: comp.lang.ada
User-Agent: 40tude_Dialog/2.0.15.1
MIME-Version: 1.0
Content-Type: text/plain; charset="iso-8859-1"
Content-Transfer-Encoding: 8bit
Reply-To: mailbox@dmitry-kazakov.de
Organization: cbb software GmbH
References: <fb2bbb15-1aff-408e-bada-3b7f4d81fa74@t8g2000yqk.googlegroups.com>
 <xtj9ihygde9q$.t30hjfo8ikh2.dlg@40tude.net>
 <ea2bf467-ca86-42db-ae4c-7c462b4889fd@l8g2000yql.googlegroups.com>
Date: Sun, 17 Oct 2010 10:35:38 +0200
Message-ID: <18tt8tf57xd5m.10yh2wugb4eeo.dlg@40tude.net>
NNTP-Posting-Date: 17 Oct 2010 10:35:39 CEST
NNTP-Posting-Host: 28a57e10.newsspool1.arcor-online.net
X-Trace: 
 DXC=MYHjQ@DcSfhEB;5>eE0T7mic==]BZ:afn4Fo<]lROoRa<`=YMgDjhgbniX0T=6Vh`h[6LHn;2LCVn[<mhadbfdUkVA;C0W;P9:oZ2NgVg2ESFo
X-Complaints-To: usenet-abuse@arcor.de
Xref: g2news2.google.com comp.lang.ada:15551
Date: 2010-10-17T10:35:39+02:00
List-Id: <comp.lang.ada>

On Sat, 16 Oct 2010 12:19:18 -0700 (PDT), Ron Wills wrote:

> The "pragma Convention" did the trick! I must say, Ada is the one
> language I've encountered that seems to have the largest learning
> curve because of the most cryptic references I ever seen ;)

What you are doing is interfacing to another language. That is not Ada, but
system programming. If you think pragma Convention cryptic, well, what
about reading the compiler manual for call stack frame format details and
implementing that using Assembler code insertions? (:-))

P.S. to dear ARG members. Why discrimnants cannot be mapped onto components
of a C structure. I mean making OK this:

   type Vector is array (size_t range <>) of Whatever;
� �pragma Convention (C, Vector);
� �type Constrained (Size : size_t) is record
   � � �List� : Vector (1..Size);
� �end record;
� �pragma Convention (C, Constrained);

-- 
Regards,
Dmitry A. Kazakov
http://www.dmitry-kazakov.de