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,FREEMAIL_FROM
	autolearn=ham autolearn_force=no version=3.4.4
X-Google-Language: ENGLISH,ASCII-7-bit
X-Google-Thread: 103376,23ade4b42d9cb5f0
X-Google-Attributes: gid103376,public
X-Google-ArrivalTime: 2003-01-20 10:46:07 PST
Path: 
 archiver1.google.com!news1.google.com!newsfeed.stanford.edu!logbridge.uoregon.edu!newsfeed.vmunix.org!newsfeed01.sul.t-online.de!newsmm00.sul.t-online.com!t-online.de!news.t-online.com!not-for-mail
From: "Martin Krischik" <Martin.Krischik@T-Online.de>
Newsgroups: comp.lang.ada
Subject: Re: Eliminating copying in Gnat
Date: Mon, 20 Jan 2003 19:34:10 +0100
Organization: never organized
Message-ID: <2ffh0b-tc5.ln@linux1.krischik.com>
References: <3e2b7777$0$33930$bed64819@news.gradwell.net>
 <3E2C0E44.481AC15B@dassault-aviation.fr>
Mime-Version: 1.0
Content-Type: text/plain; charset=ISO-8859-15
X-Trace: news.t-online.com 1043088314 03 2541 tiKYEtnSCAU5b 030120 18:45:14
X-Complaints-To: abuse@t-online.com
X-Sender: 05341395658-0001@t-dialin.net
User-Agent: Pan/0.13.0 (The whole remains beautiful)
Xref: archiver1.google.com comp.lang.ada:33246
Date: 2003-01-20T19:34:10+01:00
List-Id: <comp.lang.ada>

On Mon, 20 Jan 2003 15:57:08 +0100, Damien CARBONNE wrote:

> Victor Porton wrote:
 
>> Is it possible to cause Gnat to not do unnecessary copying
>> when calling this fynction?
>>
>> function Pass(X: T) return T is
>>   pragma Inline(Pass);
>> begin
>>   return X;
>> end;

Funny as you say, I did the very same thing today and the compiler actualy
told me in no uncertain terms that it did not like it. But then I am a
masochist with all warnings swiched on.
 
> I'm not completely sure about it, but I would not put the "pragma
> Inline" at this place, but rather in the spec file (.ads).
> 
> package XXX is
>    function Pass(X:T) return T;
>    pragma Inline(Pass);
> end XXX;

I think you are right. The compiler liked that Version much more.

With Regards

Martin.

PS: The Compiler used was GNAT for OS/2.

-- 
Martin Krischik
mailto://Martin@krischik.com
http://www.krischik.com