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From: Andreas Almroth <andreas.almroth@uppsala.mail.telia.com>
Subject: Re: ADA bindings for XVIEW
Date: 1997/12/02
Message-ID: <34847099.5EFF@uppsala.mail.telia.com>#1/1
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References: <3483F671.134AFCE7@cern.ch> <dewar.881081038@merv>
Organization: A3CE, Advanced Computer Engineering
Reply-To: andreas.almroth@uppsala.mail.telia.com
Newsgroups: comp.lang.ada
Date: 1997-12-02T00:00:00+00:00
List-Id: <comp.lang.ada>


Robert Dewar wrote:
> 
> Andrew says
> 
> <<gcc -g -O -I/usr/openwin/include -c xv_panel_package.adb
> xv_panel_package.adb:165:12: convention for "xv_get" does not permit
> returning unconstrained array type
> make: *** [xv_panel_package.ali] Error 1
> 
> the code causing the problem is :
> 
>  function xv_get (owner : Xv_opaque; cmd : Integer; Data : Integer;
>                                                      term : Integer)
>                    return Interfaces.C.Char_array;
>   pragma import (C,xv_get,"xv_get");
> 
> Does anyone know why ? or how to conquer ?
> >>
> 
> This program makes no sense, since C has no concept of unconstrained
> arrays. So the diagnostic makes perfect sense. To conquer it, stop
> trying to return unconstrained arrays!

Hm, sorry folks, by time the I wrote the code, I did not know better...
In my internal use only release (0.5) it's fixed.

I  must confess I'm not proud of some of the code I wrote in the
early days of my ADA95 programming, but hopefully I've learnt a lot
during the past two years...

I've just got my hands on a SPARC Station 10, so I'm setting up a
GNAT 3.10P environment as we speak. Hopefully I can schedule some
milliseconds to put together a 0.5 public release.
It seems, after all, that at least one person is using my library,
so it will be worth the time...

Regards,

         Andreas Almroth