From: Stephen Leake <stephen_leake@stephe-leake.org>
Subject: Re: Issue with GNAT GPL 2009 and GtkAda
Date: Fri, 26 Jun 2009 05:02:27 -0400
Date: 2009-06-26T05:02:27-04:00 [thread overview]
Message-ID: <u8wjfl658.fsf@stephe-leake.org> (raw)
In-Reply-To: 1avd65rn49abv$.krcxo2gdzb16$.dlg@40tude.net
"Dmitry A. Kazakov" <mailbox@dmitry-kazakov.de> writes:
> On Thu, 25 Jun 2009 05:06:08 -0400, Stephen Leake wrote:
>
>> Another thought: whenever I have trouble with anonymous access types,
>> I replace them with the corresponding named access type, and the
>> problem goes away. That may indicate a conmpiler bug, but I've always
>> had to much to do to find out.
>
> Yes, but that is not necessarily a compiler bug. It is quite simple to
> create a serious problem to oneself:
>
> declare
> Ptr : access T := new T;
> begin
> ...
> External_Ptr := Ptr.all'Uchecked_Access; -- Copy the pointer
> ...
> end; -- Now External_Ptr is dangling, because the object is freed.
Yes, but only because you used "Unchecked".
The problems I was refering to were compiler-time errors, or runtime
accessibility check failures.
--
-- Stephe
next prev parent reply other threads:[~2009-06-26 9:02 UTC|newest]
Thread overview: 48+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-06-23 21:52 Issue with GNAT GPL 2009 and GtkAda Damien Carbonne
2009-06-24 7:40 ` Dmitry A. Kazakov
2009-06-24 10:15 ` Stephen Leake
2009-06-25 9:06 ` Stephen Leake
2009-06-25 9:39 ` Dmitry A. Kazakov
2009-06-25 19:02 ` Damien Carbonne
2009-06-26 9:31 ` Stephen Leake
2009-06-26 11:18 ` Niklas Holsti
2009-06-26 16:29 ` Damien Carbonne
2009-06-26 17:28 ` Dmitry A. Kazakov
2009-06-26 19:27 ` Damien Carbonne
2009-06-26 19:50 ` Dmitry A. Kazakov
2009-06-26 21:51 ` Randy Brukardt
2009-06-27 11:11 ` Stephen Leake
2009-06-27 17:04 ` Robert A Duff
2009-06-30 11:11 ` Stephen Leake
2009-06-30 18:10 ` Robert A Duff
2009-06-29 22:11 ` Randy Brukardt
2009-06-30 11:13 ` Stephen Leake
2009-06-30 15:26 ` Adam Beneschan
2009-06-30 15:59 ` Adam Beneschan
2009-06-30 23:11 ` Randy Brukardt
2009-06-27 9:56 ` Stephen Leake
2009-06-26 21:03 ` Damien Carbonne
2009-06-27 11:21 ` Stephen Leake
2009-06-27 12:25 ` Damien Carbonne
2009-06-27 12:35 ` Damien Carbonne
2009-06-29 22:15 ` Randy Brukardt
2009-07-01 19:22 ` Damien Carbonne
2009-06-30 0:48 ` Adam Beneschan
2009-06-30 11:18 ` Stephen Leake
2009-06-25 20:49 ` Randy Brukardt
2009-06-26 7:20 ` Dmitry A. Kazakov
2009-06-26 8:17 ` Georg Bauhaus
2009-06-26 8:52 ` Dmitry A. Kazakov
2009-06-26 21:38 ` Randy Brukardt
2009-06-27 7:47 ` Dmitry A. Kazakov
2009-06-29 21:59 ` Randy Brukardt
2009-06-30 8:31 ` Dmitry A. Kazakov
2009-06-26 21:31 ` Randy Brukardt
2009-06-27 7:53 ` Dmitry A. Kazakov
2009-06-26 8:39 ` Alex R. Mosteo
2009-06-26 9:07 ` Dmitry A. Kazakov
2009-06-27 9:53 ` Stephen Leake
2009-06-26 21:40 ` Randy Brukardt
2009-06-29 10:04 ` Alex R. Mosteo
2009-06-26 9:02 ` Stephen Leake [this message]
2009-06-26 9:14 ` Dmitry A. Kazakov
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