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,c08a7609345f4e5
X-Google-NewGroupId: yes
X-Google-Attributes: gida07f3367d7,domainid0,public,usenet
X-Google-Language: ENGLISH,ASCII-7-bit
Path: 
 g2news1.google.com!news2.google.com!npeer01.iad.highwinds-media.com!news.highwinds-media.com!feed-me.highwinds-media.com!nntp.club.cc.cmu.edu!feeder.erje.net!newsfeed.straub-nv.de!nuzba.szn.dk!news.jacob-sparre.dk!pnx.dk!not-for-mail
From: "Randy Brukardt" <randy@rrsoftware.com>
Newsgroups: comp.lang.ada
Subject: Re: Limited use for limited with?
Date: Thu, 7 Oct 2010 19:07:43 -0500
Organization: Jacob Sparre Andersen
Message-ID: <i8lncg$rif$1@munin.nbi.dk>
References: 
 <853314bc-0f79-435f-86a5-d7bcdd610731@c10g2000yqh.googlegroups.com>
 <f7b952cc-bc96-4e4c-ae72-ba08ca1e3445@i13g2000yqd.googlegroups.com>
 <82y6ajg07m.fsf@stephe-leake.org>
 <eb67bb81-aea2-4044-a6e5-7e03eb72b118@h40g2000pro.googlegroups.com>
 <82ocb6ushq.fsf@stephe-leake.org>
 <op.vj7xjle3z25lew@macpro-eth1.krischik.com>
NNTP-Posting-Host: static-69-95-181-76.mad.choiceone.net
X-Trace: munin.nbi.dk 1286496465 28239 69.95.181.76 (8 Oct 2010 00:07:45 GMT)
X-Complaints-To: news@jacob-sparre.dk
NNTP-Posting-Date: Fri, 8 Oct 2010 00:07:45 +0000 (UTC)
X-Priority: 3
X-MSMail-Priority: Normal
X-Newsreader: Microsoft Outlook Express 6.00.2900.5931
X-RFC2646: Format=Flowed; Response
X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2900.5931
Xref: g2news1.google.com comp.lang.ada:14428
Date: 2010-10-07T19:07:43-05:00
List-Id: <comp.lang.ada>

"Martin Krischik" <krischik@users.sourceforge.net> wrote in message 
news:op.vj7xjle3z25lew@macpro-eth1.krischik.com...
...
>> Inside Foo_Two, we know that the accessibility level of A is the same as
>> the declaration of My_Access_Type,
>
> Are you realy sure about that? My_Access_Type is an access *all* and could 
> point to an aliased value on the stack.

He is. If you try to store an access to an aliased value on the stack into 
My_Access_Type, you'll get a compile-time error that the accessibility 
fails. (Or, in a few obscure cases, Program_Error will be raised.) The rules 
that guarentee this are a constant source of headaches for the ARG and 
implementers, but Ada users don't need to worry about that.

                                      Randy.