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: 103376,9fb8e2af320d5b3e
X-Google-Attributes: gid103376,public,usenet
X-Google-Language: ENGLISH,ASCII-7-bit
Path: 
 g2news1.google.com!news4.google.com!feeder3.cambrium.nl!feed.tweaknews.nl!newsfeed.kamp.net!newsfeed.kamp.net!newsfeed.freenet.de!news.teledata-fn.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: Bus error
Newsgroups: comp.lang.ada
User-Agent: 40tude_Dialog/2.0.15.1
MIME-Version: 1.0
Content-Type: text/plain; charset="us-ascii"
Content-Transfer-Encoding: 7bit
Reply-To: mailbox@dmitry-kazakov.de
Organization: cbb software GmbH
References: 
 <0367891DA5DA7E408D42A860FA002F44B0CC48@sma2901.cr.eurocopter.corp>
 <mailman.10.1183113484.1644.comp.lang.ada@ada-france.org>
Date: Fri, 29 Jun 2007 14:55:24 +0200
Message-ID: <1l4yqvxoid4n1.1u8eo4oo8ml4m$.dlg@40tude.net>
NNTP-Posting-Date: 29 Jun 2007 14:52:21 CEST
NNTP-Posting-Host: fcc0567a.newsspool1.arcor-online.net
X-Trace: 
 DXC=FZ1mI<`f[cC2jYf>V4L0gLic==]BZ:afN4Fo<]lROoRAFl8W>\BH3YBHiNC=jUAX4BDNcfSJ;bb[EFCTGGVUmh?DLK[5LiR>kgBB\0Bb[ieA]A
X-Complaints-To: usenet-abuse@arcor.de
Xref: g2news1.google.com comp.lang.ada:16342
Date: 2007-06-29T14:52:21+02:00
List-Id: <comp.lang.ada>

On Fri, 29 Jun 2007 11:35:28 +0200, Duncan Sands wrote:

>>> ... one objection against Ada 2005 design is that now it is impossible
>> to > have types which objects were strictly temporal, i.e. to prevent
>> creation > of variables. Consider this:
>>>
>>> [  type T (<>) is limited private; ]
>>>
>>>   X : T := Factory; -- Was illegal in Ada 95
>>>
>>>   Foo (Factory); -- That's OK
> 
> in Ada 95 you could do
> 
> 	X : T renames Factory;

Yes, you're right. It should be illegal. Semantically it is same as

   X : Integer renames 1; -- Illegal

For fun:

   Y : Integer renames 1+1; -- Illegal
   Z : Integer renames "+"(1,1); -- Legal!

   function Very_Positive return Integer is
   begin
       return -1;
   end Very_Positive;

   Oops : Positive renames Very_Positive; -- This is OK!

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