Re: garbage collection is ON NSCFDictionary crash
Re: garbage collection is ON NSCFDictionary crash
- Subject: Re: garbage collection is ON NSCFDictionary crash
- From: "Sean McBride" <email@hidden>
- Date: Tue, 3 Feb 2009 18:53:55 -0500
- Organization: Rogue Research Inc.
On 2/3/09 12:31 PM, Greg Parker said:
>
>On Feb 3, 2009, at 9:30 AM, Sean McBride wrote:
>
>> On 2/3/09 7:48 AM, Bill Bumgarner said:
>>
>>> Exception Codes: KERN_INVALID_ADDRESS at 0x00000000a1b1c1d8
>>>
>>> That seems like a rather suspicious address. a1b1c1d8? Fishy.
>>
>> I saw an a1b1c1d1+<small number> crash the other day (also a GC app),
>> and thought I remembered that number from the Debugging Magic
>> technote,
>> but I can't find any reference, maybe I imagined it.
>
>0xa1b1c1d3 is used by some CF containers. Deleted or empty slots in
>the container are overwritten with that value. Usually this means that
>a CF container and some other object overlap in memory, because of a
>memory management error of either the container or the other object.
>
>[objc explain]: So you crashed in objc_msgSend()
>http://sealiesoftware.com/blog/archive/2008/09/22/
>objc_explain_So_you_crashed_in_objc_msgSend.html
Thanks Greg! I knew I saw it somewhere! I was thinking d1 not d3,
which didn't help my searching I guess.
In 64 bit, does it use 0xa1b1c1d3a1b1c1d3?
I wish the Debugging Magic technote was a wiki... so many blogs have
useful tidbits that it lacks....
Cheers,
--
____________________________________________________________
Sean McBride, B. Eng email@hidden
Rogue Research www.rogue-research.com
Mac Software Developer Montréal, Québec, Canada
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