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: 103376,39bde956b245c191
X-Google-NewGroupId: yes
X-Google-Attributes: gida07f3367d7,domainid0,public,usenet
X-Google-Language: ENGLISH,ASCII-7-bit
Received: by 10.68.31.165 with SMTP id b5mr5157522pbi.1.1323352818607;
        Thu, 08 Dec 2011 06:00:18 -0800 (PST)
Path: 
 lh20ni83318pbb.0!nntp.google.com!news2.google.com!newsfeed2.dallas1.level3.net!news.level3.com!bloom-beacon.mit.edu!newsswitch.lcs.mit.edu!nntp.TheWorld.com!not-for-mail
From: Robert A Duff <bobduff@shell01.TheWorld.com>
Newsgroups: comp.lang.ada
Subject: Re: How to nicely distribute a simple Ada library?
Date: Thu, 08 Dec 2011 09:00:17 -0500
Organization: The World Public Access UNIX, Brookline, MA
Message-ID: <wccehwfupse.fsf@shell01.TheWorld.com>
References: <slrnjdmlq0.1lme.lithiumcat@sigil.instinctive.eu>
 <4edb8625$0$7623$9b4e6d93@newsspool1.arcor-online.net>
 <slrnje13m8.1lme.lithiumcat@sigil.instinctive.eu>
NNTP-Posting-Host: shell01.theworld.com
Mime-Version: 1.0
X-Trace: pcls6.std.com 1323352817 7143 192.74.137.71 (8 Dec 2011 14:00:17 GMT)
X-Complaints-To: abuse@TheWorld.com
NNTP-Posting-Date: Thu, 8 Dec 2011 14:00:17 +0000 (UTC)
User-Agent: Gnus/5.1008 (Gnus v5.10.8) Emacs/21.3 (irix)
Cancel-Lock: sha1:hNDdBDRgqqY+9exslHXcaNXJ1hU=
Xref: news2.google.com comp.lang.ada:14876
Content-Type: text/plain; charset=us-ascii
Date: 2011-12-08T09:00:17-05:00
List-Id: <comp.lang.ada>

Natasha Kerensikova <lithiumcat@gmail.com> writes:

> It seems I do use a GNAT-specific pragma, which is pragma Unreferenced.
> I find it very useful (with the associated "unreferenced" warning), but
> only during active development. I guess once released, and used without
> modification, it becomes useless?

Note that a compiler that doesn't support pragma Unreferenced will
ignore it (with a warning).  Same for any other unrecognized pragmas.
So if a pragma doesn't do anything important at run time (like
Unreferenced), then it's safe to leave it in.

The warnings ("Never heard of pragma Unreferenced") might be annoying,
but that's unavoidable.  Different compilers give different warnings.
If you're using multiple compilers, pick one whose warnings you like,
and pay attention to them (and use "pragma Warnings(Off)" or whatever
as appropriate).  For other compilers, just ignore the warnings.

- Bob