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=-1.9 required=5.0 tests=BAYES_00,FREEMAIL_FROM
	autolearn=ham autolearn_force=no version=3.4.4
X-Google-Thread: 103376,4ee25b9870acbe04
X-Google-NewGroupId: yes
X-Google-Attributes: gida07f3367d7,domainid0,public,usenet
X-Google-Language: ENGLISH,ASCII
Path: 
 g2news2.google.com!postnews.google.com!e35g2000yqc.googlegroups.com!not-for-mail
From: AdaMagica <christ-usch.grein@t-online.de>
Newsgroups: comp.lang.ada
Subject: Re: Use of abstract tagged types without access types
Date: Fri, 10 Jun 2011 02:42:54 -0700 (PDT)
Organization: http://groups.google.com
Message-ID: 
 <a3682a81-4b32-4de3-a38c-ce8a59b9e903@e35g2000yqc.googlegroups.com>
References: 
 <661061d7-cc2a-45ff-b7e2-28b8f885cd02@n10g2000vby.googlegroups.com>
 <4da7833f-e978-47bc-a39b-3dfb4c630193@z33g2000yqb.googlegroups.com>
 <m21uz240kj.fsf@pushface.org>
NNTP-Posting-Host: 80.156.44.178
Mime-Version: 1.0
Content-Type: text/plain; charset=ISO-8859-1
Content-Transfer-Encoding: quoted-printable
X-Trace: posting.google.com 1307698975 15460 127.0.0.1 (10 Jun 2011 09:42:55
 GMT)
X-Complaints-To: groups-abuse@google.com
NNTP-Posting-Date: Fri, 10 Jun 2011 09:42:55 +0000 (UTC)
Complaints-To: groups-abuse@google.com
Injection-Info: e35g2000yqc.googlegroups.com; posting-host=80.156.44.178;
 posting-account=rmHyLAoAAADSQmMWJF0a_815Fdd96RDf
User-Agent: G2/1.0
X-Google-Web-Client: true
X-Google-Header-Order: HUALESRCNK
X-HTTP-UserAgent: Mozilla/5.0 (Windows NT 5.2; WOW64;
 rv:2.0.1) Gecko/20100101 Firefox/4.0.1,gzip(gfe)
Xref: g2news2.google.com comp.lang.ada:20703
Date: 2011-06-10T02:42:54-07:00
List-Id: <comp.lang.ada>

On 10 Jun., 09:17, Simon Wright <si...@pushface.org> wrote:
> AdaMagica <christ-usch.gr...@t-online.de> writes:
> > =A0 type Parent_Type (Child: access Child_Type'Class)
> > =A0 =A0 is new Ada.Finalization.Controlled with null record;
>
> Does that have to be (Child : not null access Child_Type'Class)
> nowadays?

Not necessarily, only if you would prevent null values.