From: Niklas Holsti <niklas.holsti@nospam.please>
Subject: Re: Possible heap problem on Windows, help sought
Date: Wed, 29 Nov 2006 19:53:42 +0200
Date: 2006-11-29T19:53:42+02:00 [thread overview]
Message-ID: <456dc966$0$31542$39db0f71@news.song.fi> (raw)
In-Reply-To: <873b82qi90.fsf@ludovic-brenta.org>
Ludovic Brenta wrote:
> Niklas Holsti writes:
>
>>I'm grateful for your advice. Thanks to the Ada run-time checks it
>>has been a while since I had to fight with this kind of bug, but I
>>hope it will come back to me -- and then go away again :-)
>
>
> Same here; for the past coupld of months, I've been trying, on and
> off, to fight a nasty heap corruption bug in GPS 3.1.3, 4.0.0 and now
> 4.1.1. I've documented the various symptoms in Debian bugs #393636,
> #400876 and #400883. I realised that my skills are insufficient for
> such a large-scale undertaking; Valgrind detected more that 10 million
> errors during a short run of GPS, most of which in Python or GTK+
> libraries, and not all of which are necessarily serious. Any advice?
Ouch. Makes me feel comforted, in a way, but sorry, no advice yet.
> Today I replaced one instance of Unchecked_Deallocation with a no-op
> and behold, GPS no longer crashes. Obviously, it leaks, but that's
> not as bad as crashing or hanging.
My application is a batch computation, not interactive, so I
deliberately avoid deallocation and cheerfully let all low-turnover
allocations leak. (I know this will bite me if/when I try to build a GUI
for this application.) So I have only a small number of access types
where dangling pointers may occur (I think).
> I'm thinking maybe I should instrument access types to use debug
> pools, but there are too many of them.
What do you think of a GNAT option to make debug-pools the default?
Would it make sense?
> That's obviously not on Windows; sorry for hijacking your thread,
> Niklas :)
Feel free, it seems my problem is not Windows-specific, either.
--
Niklas Holsti
Tidorum Ltd
niklas holsti tidorum fi
. @ .
next prev parent reply other threads:[~2006-11-29 17:53 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-11-29 11:43 Possible heap problem on Windows, help sought Niklas Holsti
2006-11-29 11:54 ` Duncan Sands
2006-11-29 13:42 ` Niklas Holsti
2006-11-29 14:06 ` Niklas Holsti
2006-11-29 14:20 ` Duncan Sands
2006-11-29 15:04 ` Alex R. Mosteo
2006-11-29 16:40 ` Niklas Holsti
2006-11-29 17:23 ` Ludovic Brenta
2006-11-29 17:53 ` Niklas Holsti [this message]
2006-11-29 18:00 ` Ludovic Brenta
2006-12-01 1:05 ` Randy Brukardt
[not found] ` <mailman.32.1164869912.4389.comp.lang.ada@ada-france.org>
2006-11-30 20:48 ` Niklas Holsti
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