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Newsgroups: comp.lang.ada
Subject: Re: Controlled and funny GNAT warning
From: Georg Bauhaus <bauhaus@arcor.de>
In-Reply-To: <ep20ft$o6s$2@cernne03.cern.ch>
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Date: Mon, 22 Jan 2007 11:09:10 +0100
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Date: 2007-01-22T11:08:16+01:00
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On Mon, 2007-01-22 at 10:34 +0100, Maciej Sobczak wrote:
> Hi,
> 
> Consider:
> 
> --  p.ads
> with Ada.Finalization;
> package P is
>     type T is new Ada.Finalization.Controlled with null record;
> end P;
> 
> Just specification. Let's compile it:

$ gnatmake -gnatv -gnatwd p.ads
gcc -c -gnatv -gnatwd p.ads

GNAT GPL 2006 (20060522-34)
Copyright 1992-2006, Free Software Foundation, Inc.

Compiling: p.ads (source file time stamp: 2007-01-22 10:07:43)
 4 lines: No errors

> $ gnatmake -gnatv -gnatwd -c p
> gnatgcc -c -gnatv -gnatwd p.ads
> 
> GNAT GPL 2005 (20050729)
> Copyright 1992-2005 Free Software Foundation, Inc.
> 
> Compiling: p.ads (source file time stamp: 2007-01-20 20:09:07)
> 
>       3.    type T is new Ada.Finalization.Controlled with null record;
>                  |
>          >>> warning: implicit dereference
> 
>   4 lines: No errors, 1 warning
> 
> 
> What's more funny, there is no problem with Limited_Controlled.
> 
> Am I just unlucky while trying to learn Ada? :-)
>