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From: Olivier Scalbert <olivier.scalbert@algosyn.com>
Subject: Re: Problem with optimizations
Date: Tue, 28 Apr 2009 21:06:37 +0200
Date: 2009-04-28T21:06:37+02:00	[thread overview]
Message-ID: <49f753b9$0$2861$ba620e4c@news.skynet.be> (raw)
In-Reply-To: <C61D0C17.115054%yaldnif.w@blueyonder.co.uk>

(see below) wrote:

> 
> There is no else part for the following if:
> 
>             if Is_Solved(Cube) then
>                 New_Line;
>                 Put("Solved !"); New_Line;
> 
>                 for i in 1..depth-1 loop
>                     Ada.Integer_Text_IO.Put(Integer(Moves(i)));
>                 end loop;
>                 Result := True;
>             end if;
> 
> So the procedure can exit with Result undefined. Since the program is
> incorrect, varying optimisation, or implementation details, is likely to
> give varying results. Some may co-incidentally be the results you expect.
> 
> P.S. I did not use gdb.
> 

You are right !

So an Ada compiler can compile incorrect programs !
;-)



  parent reply	other threads:[~2009-04-28 19:06 UTC|newest]

Thread overview: 22+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2009-04-28 17:04 Problem with optimizations Olivier Scalbert
2009-04-28 17:34 ` Albrecht Käfer
2009-04-28 17:54   ` Olivier Scalbert
2009-04-28 18:32     ` Albrecht Käfer
2009-04-28 19:15     ` John B. Matthews
2009-04-28 18:40 ` (see below)
2009-04-28 19:05   ` Albrecht Käfer
2009-04-28 19:15     ` Olivier Scalbert
2009-04-28 19:17       ` Olivier Scalbert
2009-04-28 19:26         ` Gautier
2009-04-28 21:33       ` sjw
2009-04-29 10:36       ` johnscpg
2009-04-29 10:45       ` johnscpg
2009-04-29 13:51       ` johnscpg
2009-04-28 19:06   ` Olivier Scalbert [this message]
2009-04-28 19:12     ` (see below)
2009-04-29  2:35       ` Gene
2009-04-29  3:28         ` (see below)
2009-04-29  7:05           ` Georg Bauhaus
2009-04-28 19:46 ` Gautier
2009-04-28 20:05   ` Olivier Scalbert
2009-04-28 20:21   ` Olivier Scalbert
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