From: Robert A Duff <bobduff@shell01.TheWorld.com>
Subject: Re: Bus error
Date: Thu, 28 Jun 2007 17:19:09 -0400
Date: 2007-06-28T17:19:09-04:00 [thread overview]
Message-ID: <wccsl8b3hgy.fsf@shell01.TheWorld.com> (raw)
In-Reply-To: 1183061209.600996.74710@k79g2000hse.googlegroups.com
Maciej Sobczak <see.my.homepage@gmail.com> writes:
> On 28 Cze, 03:58, Robert A Duff <bobd...@shell01.TheWorld.com> wrote:
>
>> > BTW - is it necessary to reveal in the public view that the type is
>> > tagged?
>>
>> No. You can have an untagged private type whose full type is tagged.
>
> You mean - untagged *public*, I suppose?
Yeah, the terminology is confusing. I mean:
package P is
type T is limited private;
private
type T is tagged limited ...;
end P;
or:
with Ada.Finalization; use Ada;
package P is
type T is limited private;
private
type T is new Finalization.Limited_Controlled with ...;
end P;
Both of the above are legal.
>> > I cannot check it, because this time I get the explicit "GNAT BUG
>> > DETECTED".
>>
>> ...which requests that you send a bug report.
>
> I conclude that AdaCore guys read comp.lang.ada as well. :-)
Not really. ;-)
I read it once in a while, but often not for months at a time.
Most AdaCore folks do not read comp.lang.ada at all.
And AdaCore certainly does not go looking for GNAT bugs on
comp.lang.ada. If you want a bug fixed, you have to send
an official bug report. And if you want it fixed fast,
or want AdaCore to answer your questions, you have to spend
money.
>> As to your original question, about an extension aggregate: I don't see
>> anything wrong with your code, and I do recall fixing a bug in that area
>> (extension aggregate of limited type with controlled parts returned from
>> build-in-place function) a month or so ago. The bug fix will eventually
>> find its way into the public version of GNAT.
>
> That's a good news, really. I consider this feature (limited
> controlled with unknown discriminant) to be fundamental for correct
> handling of external resources and other "interesting" types. It is
> really a high time for this feature to get a wider adoption.
Right, but it's the Ada 2005 build-in-place function return stuff that
makes these really useful. The bug we're talking about (assuming it
really is the same bug that I fixed, which I can't promise) was a
nasty interaction between build-in-place functions and controlled
types.
- Bob
next prev parent reply other threads:[~2007-06-28 21:19 UTC|newest]
Thread overview: 51+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-06-27 14:23 Bus error Maciej Sobczak
2007-06-27 15:45 ` Georg Bauhaus
2007-06-27 17:19 ` Maciej Sobczak
2007-06-28 1:58 ` Robert A Duff
2007-06-28 20:06 ` Maciej Sobczak
2007-06-28 21:19 ` Robert A Duff [this message]
2007-06-29 8:05 ` Maciej Sobczak
2007-06-29 9:42 ` Georg Bauhaus
2007-06-29 16:59 ` Adam Beneschan
2007-06-30 12:33 ` Georg Bauhaus
2007-06-30 2:02 ` Robert A Duff
2007-06-29 8:04 ` Dmitry A. Kazakov
2007-06-29 9:23 ` AW: " Grein, Christoph (Fa. ESG)
2007-06-29 10:17 ` Dmitry A. Kazakov
2007-06-27 20:02 ` Anh Vo
2007-06-27 20:48 ` Maciej Sobczak
2007-06-28 2:01 ` Robert A Duff
[not found] <0367891DA5DA7E408D42A860FA002F44B0CC48@sma2901.cr.eurocopter.corp>
2007-06-29 9:35 ` AW: " Duncan Sands
2007-06-29 12:55 ` Dmitry A. Kazakov
2007-06-29 15:37 ` Markus E Leypold
2007-06-29 15:44 ` Georg Bauhaus
2007-06-29 20:07 ` Dmitry A. Kazakov
2007-06-30 1:37 ` Robert A Duff
2007-06-30 8:44 ` Dmitry A. Kazakov
2007-06-30 11:52 ` Georg Bauhaus
2007-06-30 13:16 ` Georg Bauhaus
2007-06-30 14:31 ` Dmitry A. Kazakov
2007-06-30 18:07 ` Georg Bauhaus
2007-06-30 19:31 ` Robert A Duff
2007-07-01 9:07 ` Dmitry A. Kazakov
2007-06-30 15:40 ` Robert A Duff
2007-06-30 17:54 ` Georg Bauhaus
2007-07-02 8:01 ` Jean-Pierre Rosen
2007-07-02 12:00 ` Dmitry A. Kazakov
2007-07-02 12:30 ` Jean-Pierre Rosen
2007-07-02 14:22 ` Robert A Duff
2007-06-30 13:14 ` Georg Bauhaus
2007-06-30 14:31 ` Dmitry A. Kazakov
2007-06-30 15:34 ` Robert A Duff
2007-07-01 8:34 ` Dmitry A. Kazakov
2007-07-01 15:39 ` Robert A Duff
2007-07-01 19:41 ` Dmitry A. Kazakov
2007-06-30 15:29 ` Robert A Duff
2007-06-30 17:41 ` Georg Bauhaus
2007-06-30 13:31 ` Markus E Leypold
2007-07-02 0:16 ` Robert A Duff
-- strict thread matches above, loose matches on Subject: below --
1990-08-27 23:48 BUS ERROR J o s e D u a r t e ! ! !
1990-08-16 14:52 saharbaugh%roo.dnet
1990-08-13 21:11 J o s e D u a r t e !!!
1990-08-10 12:32 bus error saharbaugh%roo.dnet
1990-08-09 14:50 saharbaugh%roo.dnet
1990-08-10 21:38 ` Chuck Peterson
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