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Date: Tue, 28 Apr 2009 21:15:48 +0200
From: Olivier Scalbert <olivier.scalbert@algosyn.com>
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Subject: Re: Problem with optimizations
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Date: 2009-04-28T21:15:48+02:00
List-Id: <comp.lang.ada>

Albrecht K�fer wrote:
> (see below) schrieb::
>> 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.
> 
> Shouldn't that, you know, create a warning or something?
> 
> 
> Albrecht

That is what I was thinking, but with:

gnatmake -f -O3 -W -gnatp rubikmain

it detects the bug (and also an other one in the same function)

Shame on me !