Re: Eliminating copying in Gnat

["Martin Krischik" <Martin.Krischik@T-Online.de>]

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