comp.lang.ada
 help / color / mirror / Atom feed
From: sjw <simon.j.wright@mac.com>
Subject: Re: Dispatch on the result still does not work?
Date: Sun, 12 Jul 2009 13:30:07 -0700 (PDT)
Date: 2009-07-12T13:30:07-07:00	[thread overview]
Message-ID: <874fde27-bd71-4d8b-adad-072817790373@d34g2000vbm.googlegroups.com> (raw)
In-Reply-To: a9ee3b9c-b690-424f-b292-fa454a5cc734@d4g2000vbm.googlegroups.com

On Jul 12, 6:11 pm, AdaMagica <christoph.gr...@eurocopter.com> wrote:
>   X : T'Class := S'(Value);
> begin
>    X := Value; -- Ambiguous?
>
> You know, I'm not a language lawyer, but after the initialization, X
> is constrained to the tag with which it was initialized.
>
> So to me, it should be dispatching as Dmitry expects.

I think GNAT GPL 2009 might just have a problem in this area: this is
accepted

procedure Q is
   X : P.T'Class := P.S'(P.Value);
begin
   X := P.T'(P.Value);

but this fails

procedure Q is
   X : P.T'Class := P.T'(P.Value);
begin
   X := P.S'(P.Value);

saying 'tag-indeterminate expression must have type "T"(RM 5.2 (6))'



  reply	other threads:[~2009-07-12 20:30 UTC|newest]

Thread overview: 30+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2009-07-11 10:04 Dispatch on the result still does not work? Dmitry A. Kazakov
2009-07-11 11:09 ` Chris Moore
2009-07-11 12:05   ` Dmitry A. Kazakov
2009-07-11 17:50     ` Chris Moore
2009-07-11 19:22       ` Dmitry A. Kazakov
2009-07-11 11:32 ` Hibou57 (Yannick Duchêne)
2009-07-11 12:20   ` Dmitry A. Kazakov
2009-07-11 13:36     ` Hibou57 (Yannick Duchêne)
2009-07-11 13:39       ` Hibou57 (Yannick Duchêne)
2009-07-11 15:19       ` Dmitry A. Kazakov
2009-07-11 18:08         ` Hibou57 (Yannick Duchêne)
2009-07-11 19:29           ` Dmitry A. Kazakov
2009-07-11 23:22             ` Hibou57 (Yannick Duchêne)
2009-07-12  9:46               ` Dmitry A. Kazakov
2009-07-11 18:54 ` Georg Bauhaus
2009-07-11 19:40   ` Dmitry A. Kazakov
2009-07-12 10:40     ` Chris Moore
2009-07-12 11:30       ` Dmitry A. Kazakov
2009-07-12 16:05         ` Chris Moore
2009-07-12 16:38           ` Dmitry A. Kazakov
2009-07-12 17:11             ` AdaMagica
2009-07-12 20:30               ` sjw [this message]
2009-07-13 16:55                 ` Adam Beneschan
2009-07-13 21:47                   ` sjw
2009-07-13 22:50                     ` Adam Beneschan
2009-07-14 21:06                       ` sjw
2009-07-13 15:13 ` Adam Beneschan
2009-07-13 15:17   ` Adam Beneschan
2009-07-13 16:33     ` AdaMagica
2009-07-13 18:46   ` Adam Beneschan
replies disabled

This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox