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=-1.3 required=5.0 tests=BAYES_00,FREEMAIL_FROM,
	INVALID_MSGID autolearn=no autolearn_force=no version=3.4.4
X-Google-Language: ENGLISH,ASCII-7-bit
X-Google-Thread: 103376,e80a1497a689d8a5
X-Google-Attributes: gid103376,public
From: "Vladimir Olensky" <vladimir_olensky@yahoo.com>
Subject: Re: Ammo-zilla
Date: 1999/11/01
Message-ID: <s1rdo7r7qof93@corp.supernews.com>#1/1
X-Deja-AN: 543125368
References: 
 <38120FAF.945ADD7D@hso.link.com><slrn8156pm.pl.aidan@skinner.demon.co.uk><7uutgd$87h$1@nnrp1.deja.com>
 <19991024.18033546@db3.max5.com><38189268.43EB150F@mail.earthlink.net><86ogdjtdwz.fsf@ppp-115-70.villette.club-internet.fr><7vadsp$8q61@news.cis.okstate.edu>
 <1999Oct28.221910.1@eisner><7vb3c4$8a21@news.cis.okstate.edu>
 <7vhg2n$7ht$1@nnrp1.deja.com> <wcc66zmnw0h.fsf@world.std.com>
Organization: Posted via Supernews, http://www.supernews.com
X-MimeOLE: Produced By Microsoft MimeOLE V4.72.3110.3
Newsgroups: comp.lang.ada
X-Complaints-To: newsabuse@supernews.com
Date: 1999-11-01T00:00:00+00:00
List-Id: <comp.lang.ada>


Robert A Duff wrote in message ...
>Robert Dewar <robert_dewar@my-deja.com> writes:


>I understand your concern, but I don't think it's all that bad -- I
>don't think it's unreasonable to have Unchecked_Conversion of pointers
>and garbage collection in the same language.  You have to be careful,
>and you have to minimize and isolate the low-level stuff.

^^^^^^^^^^^^^^^^^^^^^^^
In  a package that could be marked as UNSAFE ( Modula-3
approach to safety problem) or using "Pragma Unsafe".

It would be nice to have such package marker as well as
SAFE marker.

SAFE marker is simpler to use than put
 a whole bunch of pragmas:
    pragma restrictions(AAA)
    pragma restrictions(BBB)
    ......
    pragma restrictions(ZZZ)

One can use that marker for completely safe packages.

Otherwise UNSAFE marker could allow even more
low-level unsafe operations.

Regards,
Vladimir Olensky