Re: Problems with Mine Detector Game

[Jeffrey Carter <jrcarter@acm.org>]

Pascal Obry wrote:
> 
> Jeffrey Carter <jrcarter@acm.org> writes:
> 
> > This is puzzling. There should be no way that line can raise
> > Constraint_Error.
> 
> I understant that. That's why I said it is weird ! The fact is that if I
> output (put_line) the value returned in PragmARC.Universal_Random.Random_Int,
> the exception is not raised and the value seems fine. If I print the value
> returned by this function on the caller side I get 0. Which is not a positive
> hence the exception... So it is either some kind of corrupted memory, a GNAT
> bug, or a build problem on my side !

This does look like a compiler error. I would not expect memory
corruption to always result in zero.

> > The binary was built using GNAT 3.13p and GtkAda 1.3.10 on Win98.
> >
> > FWIW, we have now built Mine_Detector with GtkAda 1.3.12 on Win98 with
> > no problems.
> 
> I have tested it on Windows 2000 with GNAT 3.14, 3.15 and GtkAda 1.3.12.

Can you run the pre-built executable?

There are 2 variables here, the compiler version and the Windows
version. Would it be possible for you to obtain GNAT 3.13 and try that? 
That could eliminate one of the variables.

-- 
Jeffrey R. Carter
PragmAda Software Engineering