From: "Chad R. Meiners" <crmeiners@hotmail.com>
Subject: Re: memory leakages with Ada?
Date: Fri, 15 Mar 2002 16:59:22 -0500
Date: 2002-03-15T16:59:22-05:00 [thread overview]
Message-ID: <a6tq2m$rnb$1@msunews.cl.msu.edu> (raw)
In-Reply-To: 3C921A81.9060708@mail.com
"Hyman Rosen" <hyrosen@mail.com> wrote in message
news:3C921A81.9060708@mail.com...
> The counter argument is that dangling pointers are a problem where they
> have been copied into other data structures, so nulling one particular
> variable which is holding the pointer isn't all that useful. Also,
> freeing memory tends to happen as part of the process of cleaning up a
> data structure which is itself about to disappear, so again nulling the
> pointer isn't going to accomplish much.
>
This counter argument is weak at best since it is very poor design to allow
more than one pointer to a block of allocated memory without having the
ablility to invalidate them all when you deallocate that block. Therefore,
since proper program design avoids the dangling pointer problem, nulling the
pointer provides a useful safeguard against accessing deallocated memory.
-CRM
next prev parent reply other threads:[~2002-03-15 21:59 UTC|newest]
Thread overview: 79+ messages / expand[flat|nested] mbox.gz Atom feed top
2002-03-14 14:07 memory leakages with Ada? Calvin Ow
2002-03-14 14:31 ` Larry Kilgallen
2002-03-14 20:42 ` Nick Roberts
2002-03-14 21:11 ` Larry Kilgallen
2002-03-14 21:07 ` Anh_Vo
2002-03-14 20:12 ` Marin David Condic
2002-03-15 9:37 ` John McCabe
2002-03-15 12:55 ` Pat Rogers
2002-03-16 4:36 ` Will
2002-03-16 4:53 ` Pat Rogers
2002-03-16 12:21 ` Larry Kilgallen
2002-03-16 9:13 ` DPH
2002-03-16 14:38 ` Pat Rogers
2002-03-16 14:56 ` DPH
2002-03-16 15:51 ` Preben Randhol
2002-03-16 16:39 ` DPH
2002-03-16 19:51 ` Pat Rogers
2002-03-16 20:40 ` DPH
2002-03-17 19:31 ` Richard Riehle
2002-03-17 21:49 ` Pat Rogers
2002-03-17 22:02 ` Pat Rogers
2002-03-18 22:32 ` Randy Brukardt
2002-03-18 22:47 ` Pat Rogers
2002-03-18 7:22 ` Richard Riehle
2002-03-18 17:35 ` Marin David Condic
2002-03-17 16:26 ` Steve Doiel
2002-03-16 20:18 ` Robert A Duff
2002-03-16 20:36 ` DPH
2002-03-15 14:20 ` Marin David Condic
2002-03-18 17:54 ` Warren W. Gay VE3WWG
2002-03-18 19:54 ` Hyman Rosen
2002-03-18 20:34 ` Larry Kilgallen
2002-03-18 21:18 ` Hyman Rosen
2002-03-18 21:45 ` Larry Kilgallen
2002-03-20 1:19 ` Hyman Rosen
2002-03-20 17:06 ` Warren W. Gay VE3WWG
2002-03-20 17:56 ` Larry Kilgallen
2002-03-20 17:48 ` Marin David Condic
2002-03-22 0:25 ` Matthew Woodcraft
2002-03-22 5:10 ` Hyman Rosen
2002-03-18 22:18 ` Marin David Condic
2002-03-20 20:49 ` Bertrand Augereau
2002-03-21 4:31 ` Will
2002-03-15 16:00 ` Hyman Rosen
2002-03-15 21:59 ` Chad R. Meiners [this message]
2002-03-17 5:43 ` Kevin Cline
2002-03-17 7:22 ` Chad R. Meiners
2002-03-18 4:09 ` Kevin Cline
2002-03-18 16:54 ` Chad R. Meiners
2002-03-18 17:38 ` Warren W. Gay VE3WWG
2002-03-19 9:21 ` John McCabe
2002-03-19 17:11 ` Warren W. Gay VE3WWG
2002-03-19 17:16 ` Pat Rogers
2002-03-19 17:51 ` David C. Hoos
2002-03-19 18:20 ` Frank J. Lhota
2002-03-19 23:43 ` Mark Johnson
2002-03-20 15:09 ` Frank J. Lhota
2002-03-17 7:27 ` Hyman Rosen
2002-03-18 3:52 ` Kevin Cline
2002-03-18 5:37 ` Hyman Rosen
2002-03-15 17:41 ` Kevin Cline
2002-03-15 18:00 ` Marin David Condic
2002-03-15 18:08 ` Hyman Rosen
2002-03-16 10:15 ` Kevin Cline
2002-03-14 23:14 ` Kevin Cline
2002-03-15 3:20 ` Steve Doiel
2002-03-15 9:32 ` John McCabe
2002-03-15 15:46 ` Hyman Rosen
2002-03-15 17:29 ` Kevin Cline
2002-03-15 15:48 ` Jeffrey Carter
2002-03-16 3:05 ` Steve Doiel
2002-03-16 20:19 ` Jeffrey Carter
2002-03-15 17:25 ` Kevin Cline
2002-03-15 18:03 ` Hyman Rosen
2002-03-16 10:07 ` Kevin Cline
2002-03-17 3:00 ` Hyman Rosen
2002-03-15 9:27 ` John McCabe
-- strict thread matches above, loose matches on Subject: below --
2002-03-20 6:25 Christoph Grein
2002-03-20 16:35 ` Hyman Rosen
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