From: Simon Wright <simon@pushface.org>
Subject: Re: Strings with discriminated records
Date: Sun, 27 May 2018 19:07:58 +0100
Date: 2018-05-27T19:07:58+01:00 [thread overview]
Message-ID: <lyzi0lhszl.fsf@pushface.org> (raw)
In-Reply-To: 51dfb377-1b3e-45ca-a211-158101efe557@googlegroups.com
NiGHTS <nights@unku.us> writes:
> I've expanded my example to include a strange run-time crash I am getting.
>
> Type Message (Length : Positive) is new Ada.Finalization.Controlled with record
> Text : String (1 .. Length);
> Cstr : Interfaces.C.Strings.chars_ptr;
> end record;
>
> function Create (Value : String) return Message is
> begin
> return (
> Ada.Finalization.Controlled with Length => Value'Length,
> Text => Value,
> Cstr => Interfaces.C.Strings.New_String (Value)
> );
> end Create;
>
> procedure Finalize (
> M : in out Message
> ) is
> begin
> Interfaces.C.Strings.Free ( M.Cstr ); -- Crashes here
> end;
>
> declare
> M : Message := Create ("Hello World");
> begin
> null;
> end;
>
> Why does my program crash on Finalization?
Maybe Finalize is getting called twice? You should set M.Cstr to
Null_Ptr after freeing it.
next prev parent reply other threads:[~2018-05-27 18:07 UTC|newest]
Thread overview: 51+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-05-26 21:43 Strings with discriminated records NiGHTS
2018-05-26 23:42 ` Shark8
2018-05-27 1:42 ` NiGHTS
2018-05-27 8:39 ` Dmitry A. Kazakov
2018-05-27 12:22 ` Mehdi Saada
2018-05-27 12:40 ` Dmitry A. Kazakov
2018-05-27 14:34 ` NiGHTS
2018-05-27 14:50 ` Dmitry A. Kazakov
2018-05-27 15:19 ` NiGHTS
2018-05-27 15:32 ` AdaMagica
2018-05-27 16:22 ` NiGHTS
2018-05-29 22:31 ` Randy Brukardt
2018-05-30 7:29 ` Dmitry A. Kazakov
2018-05-30 20:11 ` Randy Brukardt
2018-05-27 12:48 ` Mehdi Saada
2018-05-27 13:03 ` Dmitry A. Kazakov
2018-05-27 17:11 ` NiGHTS
2018-05-27 18:07 ` Simon Wright [this message]
2018-05-27 23:08 ` NiGHTS
2018-05-28 1:44 ` Jere
2018-05-28 3:05 ` NiGHTS
2018-05-28 3:23 ` NiGHTS
2018-05-27 18:25 ` Dmitry A. Kazakov
2018-05-27 22:44 ` NiGHTS
2018-05-28 7:29 ` Dmitry A. Kazakov
2018-05-28 7:42 ` Simon Wright
2018-05-28 18:38 ` Shark8
2018-05-28 21:15 ` Mehdi Saada
2018-05-28 21:48 ` Shark8
2018-05-28 22:27 ` Mehdi Saada
2018-05-28 23:59 ` Shark8
2018-05-29 0:41 ` Dan'l Miller
2018-05-30 17:11 ` Shark8
2018-05-29 7:49 ` Dmitry A. Kazakov
2018-05-29 9:31 ` AdaMagica
2018-05-29 10:14 ` Dmitry A. Kazakov
2018-05-29 13:40 ` Dan'l Miller
2018-05-29 14:04 ` Dmitry A. Kazakov
2018-05-29 22:41 ` Randy Brukardt
2018-05-30 5:00 ` J-P. Rosen
2018-05-30 20:09 ` Randy Brukardt
2018-05-31 4:19 ` J-P. Rosen
2018-05-31 22:18 ` Randy Brukardt
2018-06-01 13:35 ` Dan'l Miller
2018-06-01 15:20 ` Dmitry A. Kazakov
2018-05-28 13:55 ` NiGHTS
2018-05-29 14:37 ` Mehdi Saada
2018-05-29 22:44 ` Randy Brukardt
2018-05-29 22:41 ` Mehdi Saada
2018-05-30 19:46 ` Randy Brukardt
2018-05-30 19:48 ` Randy Brukardt
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