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From: Kilgallen@SpamCop.net (Larry Kilgallen)
Newsgroups: comp.lang.ada
Subject: Re: Default rep specs for record types - documented??
Date: 4 Nov 2005 15:42:11 -0600
Organization: LJK Software
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Date: 2005-11-04T15:42:11-06:00
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In article <slrndmn0ub.v5k.lauri@dev.diter.com>, Lauri Ora <lauri.ora@iki.fi> writes:
> On 2005-11-04, Britt Snodgrass <britt.snodgrass@gmail.com> wrote:
>> Starting with version 4.2 I believe, the Apex Ada editor has a "Build
>> Rep Clauses" feature that will insert all applicable compiler generated
>> confirming representation clauses following a type declaration. I've
>> tried it with Apex NT 4.2.0c and it works nicely.
> 
> Some versions of GNAT also has option -gnatR1 (List rep info), which 
> gives you similar output:
>    for Record_Type'Size use 48;
>    for Record_Type'Alignment use 2;
>    for Record_Type use record
>       Field_0 at 0 range  0 .. 15;
>       Field_1 at 2 range  0 .. 15;
>       Field_2 at 4 range  0 .. 15;
>    end record;

On VMS, one uses the SDL freeware tool, since for system data structures
it produces layouts matching the layouts for other languages.