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 autolearn=ham
	autolearn_force=no version=3.4.4
X-Google-Thread: 103376,aaabba5db6b5df34
X-Google-NewGroupId: yes
X-Google-Attributes: gida07f3367d7,domainid0,public,usenet
X-Google-Language: ENGLISH,ASCII
Path: 
 g2news2.google.com!postnews.google.com!29g2000yqp.googlegroups.com!not-for-mail
From: Martin <martin.dowie@btopenworld.com>
Newsgroups: comp.lang.ada
Subject: Re: Min/Max attribute makes promises it can't keep
Date: Wed, 28 Apr 2010 06:28:18 -0700 (PDT)
Organization: http://groups.google.com
Message-ID: <b20a59f0-a6d6-4111-b57e-f807b89caa2b@29g2000yqp.googlegroups.com>
References: 
 <98b7e6f2-32ed-465c-9a52-541b7878ca86@y17g2000yqd.googlegroups.com>
	<9b17e781-f46a-4384-8809-b16602d10114@y30g2000yqh.googlegroups.com>
	<wcczl0o7g13.fsf@shell01.TheWorld.com>
 <880dc0f0-7fff-440d-8aad-6ce745fcfed8@h27g2000yqm.googlegroups.com>
	<246a7cec-bd5f-4c48-a6cb-3874080c19ab@y17g2000yqd.googlegroups.com>
	<591866ec-fa46-440c-b6fc-3092985ae3df@r27g2000yqn.googlegroups.com>
	<8ab2d2d1-b7dc-47bf-824f-4cab334a3fd6@11g2000yqr.googlegroups.com>
NNTP-Posting-Host: 20.133.0.8
Mime-Version: 1.0
Content-Type: text/plain; charset=ISO-8859-1
Content-Transfer-Encoding: quoted-printable
X-Trace: posting.google.com 1272461298 3544 127.0.0.1 (28 Apr 2010 13:28:18
 GMT)
X-Complaints-To: groups-abuse@google.com
NNTP-Posting-Date: Wed, 28 Apr 2010 13:28:18 +0000 (UTC)
Complaints-To: groups-abuse@google.com
Injection-Info: 29g2000yqp.googlegroups.com; posting-host=20.133.0.8;
	posting-account=g4n69woAAACHKbpceNrvOhHWViIbdQ9G
User-Agent: G2/1.0
X-HTTP-UserAgent: Mozilla/5.0 (Windows; U; Windows NT 5.1; en-GB; rv:1.9.2.4)
	Gecko/20100413 Firefox/3.6.4,gzip(gfe)
Xref: g2news2.google.com comp.lang.ada:11230
Date: 2010-04-28T06:28:18-07:00
List-Id: <comp.lang.ada>

On Apr 28, 12:47=A0pm, AdaMagica <christoph.gr...@eurocopter.com> wrote:
> > > But the prefix of an attribute reference does not specify a
> > > constraint.
>
> > > Integer'Min, Positive'Min, Natural'Min are all the same.
>
> > But it should, at least in the case of Min/Max.
> > Integer'Min, Positive'Min, Natural'Min being all the same breaches the
> > spirit of the Ada language (what you see is what it means).
> > A topic for Ada 201z...
>
> We could have had is thus and unconstrained Min as Positive'Base'Min
> when Min was introduced...
>
> But it is as it is, and your proposal would be a severe
> incompatibility, so it won't fly.

How about new attributes 'Safe_Min / ''Safe_Max?

-- Martin