From: Georg Bauhaus <rm.plus-bug.tsoh@maps.futureapps.de>
Subject: Re: Bug in Ada (SuSe 10.2) ?
Date: Fri, 22 Feb 2008 20:21:50 +0100
Date: 2008-02-22T20:21:50+01:00 [thread overview]
Message-ID: <1203708110.6651.7.camel@K72> (raw)
In-Reply-To: <69019a65-736e-48ee-bd9f-4c29cd7fc88f@72g2000hsu.googlegroups.com>
On Fri, 2008-02-22 at 08:10 -0800, billjones6789@yahoo.com wrote:
> Of course, the danger is only eliminated when this language-defined
> check is fully implemented in standard mode.
Here is another dangling pointer. The program is
giving me results varying with compiler/OS. I didn't see
how accessiblity checks could help in this case, but
then maybe this is a different issue?
with Ada.Unchecked_Deallocation;
with Ada.Text_IO;
procedure News3 is
use Ada;
type Int_Ptr is access Integer;
Pointer: Int_Ptr;
Dangling_Pointer: Int_Ptr;
procedure Copy(Source: in out Int_Ptr; Target: out Int_Ptr) is
procedure Oops is new Unchecked_Deallocation
(Integer, Int_Ptr);
begin
Target := Source;
Oops(Source);
end Copy;
begin
Pointer := new Integer'(42);
Copy(Pointer, Dangling_Pointer);
Text_IO.Put_Line(Integer'image(Dangling_Pointer.all));
end News3;
next prev parent reply other threads:[~2008-02-22 19:21 UTC|newest]
Thread overview: 45+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-02-19 8:47 Bug in Ada (SuSe 10.2) ? Reinert Korsnes
2008-02-19 9:08 ` Niklas Holsti
2008-02-19 9:53 ` Reinert Korsnes
2008-02-19 11:21 ` Ludovic Brenta
2008-02-20 12:41 ` Reinert Korsnes
2008-02-20 16:50 ` Adam Beneschan
2008-02-20 18:31 ` Jeffrey R. Carter
2008-02-20 23:10 ` Adam Beneschan
2008-02-20 23:22 ` Adam Beneschan
2008-02-21 0:31 ` Randy Brukardt
2008-02-21 8:56 ` Jean-Pierre Rosen
2008-02-21 9:08 ` Alex R. Mosteo
2008-02-21 9:27 ` Ludovic Brenta
2008-02-21 9:46 ` billjones6789
2008-02-21 12:27 ` Access type (mis)use (Was: Bug in Ada (SuSe 10.2) ?) Jacob Sparre Andersen
2008-02-21 19:40 ` Bob Klungle
2008-02-21 21:25 ` Jeffrey R. Carter
2008-02-21 21:57 ` Vadim Godunko
2008-02-21 22:32 ` Bug in Ada (SuSe 10.2) ? Randy Brukardt
2008-02-22 16:10 ` billjones6789
2008-02-22 19:21 ` Georg Bauhaus [this message]
2008-02-22 21:29 ` Vadim Godunko
2008-02-22 21:39 ` Robert A Duff
2008-02-23 10:16 ` billjones6789
2008-02-22 19:52 ` Randy Brukardt
2008-02-23 10:36 ` billjones6789
2008-02-26 0:32 ` Randy Brukardt
2008-02-26 16:46 ` billjones6789
2008-02-26 20:53 ` Randy Brukardt
2008-02-27 1:05 ` Robert A Duff
2008-02-27 10:06 ` billjones6789
2008-02-27 17:49 ` Robert A Duff
2008-02-28 0:30 ` Randy Brukardt
2008-02-28 15:33 ` Robert A Duff
2008-03-06 17:46 ` Adam Beneschan
2008-02-21 0:31 ` Jeffrey R. Carter
2008-02-21 0:35 ` Jeffrey R. Carter
2008-03-06 11:55 ` Colin Paul Gloster
2008-02-21 0:55 ` tmoran
2008-02-21 8:08 ` billjones6789
2008-02-21 9:11 ` Alex R. Mosteo
2008-02-21 23:01 ` Randy Brukardt
2008-02-22 16:43 ` Adam Beneschan
2008-02-22 9:06 ` Stephen Leake
2008-02-22 5:40 ` Gautier
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