Re: Debugging hints
Re: Debugging hints
- Subject: Re: Debugging hints
- From: Martin Hewitson <email@hidden>
- Date: Thu, 22 Dec 2011 18:10:11 +0100
On 22, Dec, 2011, at 03:32 PM, Mike Abdullah wrote:
>
> On 22 Dec 2011, at 14:03, Martin Hewitson wrote:
>
>>
>> On 22, Dec, 2011, at 02:39 PM, Mike Abdullah wrote:
>>
>>> Did you actually write this app to be dual-mode, or are you under the impression that turning off garbage collection will magically fix things?
>>
>> To be honest, I wrote the app assuming garbage collection was off. I think it must have got turned on by mistake, perhaps during the move to Xcode 4. Not sure.
>>
>> I am under the impression (according to what others have written) that turning off garbage collection will stop the crashes in the garbage collection queue. I think this is a reported bug, but I didn't follow that thread very long. I just was surprised to find garbage collection on in the app, so I switched it off. This revealed the bug, which I'd like now to fix, of course.
>
> I see. Well, turning it off will certainly fix that particular crash. But it doesn't surprise me at all that an app which has had the safety net of GC for a while will have picked up some memory management errors. The static analyzer may well find a lot of them.
>
Thanks for all your advice. A combination of the zombies instrument and the static analyzer helped me track down all the bugs that had crept in while operating with the safety net of garbage collection.
Martin
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Martin Hewitson
Albert-Einstein-Institut
Max-Planck-Institut fuer
Gravitationsphysik und Universitaet Hannover
Callinstr. 38, 30167 Hannover, Germany
Tel: +49-511-762-17121, Fax: +49-511-762-5861
E-Mail: email@hidden
WWW: http://www.aei.mpg.de/~hewitson
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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