Re: Crash on SIGILL
Re: Crash on SIGILL
- Subject: Re: Crash on SIGILL
- From: Roland King <email@hidden>
- Date: Sat, 22 Nov 2014 08:10:16 +0800
Two messages in one day with the exact same crash report in them - with the same memory locations in the crash report even.
That seems beyond unlikely - is this actually one crash report where the original user happened to post it here as well as reporting it, or there really are two.
I recommended GuardMalloc and Zombies for the first instance.
> On 22 Nov 2014, at 6:38 am, Greg Parker <email@hidden> wrote:
>
>>
>> On Nov 21, 2014, at 9:24 AM, Laurent Daudelin <email@hidden> wrote:
>>
>> Just got a crash report from a user. There is nothing in the trace that
>> relates to my app. The application specific information shows:
>>
>> Application Specific Information:
>> objc[60867]: Method cache corrupted. This may be a message to an invalid
>> object, or a memory error somewhere else.
>> objc[60867]: receiver 0x7ffe16d5b380, SEL 0x7fff8899a0b0, isa
>> 0x7fff785f7590, cache 0x7fff785f75a0, buckets 0x7fff9199b465, mask 0x17,
>> occupied 0x0
>> objc[60867]: receiver 32 bytes, buckets 0 bytes
>> objc[60867]: selector 'retain'
>> objc[60867]: isa ''
>> objc[60867]: Method cache corrupted.
>>
>> I've never seen this. Anybody has any clue what could cause a method cache
>> corrupted? I haven't got any report from anyone else but that user.
>>
>> Any info, pointer or help appreciated!
>
> Like the log says: either a message to an invalid object, or a memory error somewhere else that trampled on your valid object or its class's data structures. You should debug it as if it were a crash in objc_msgSend().
>
>
> --
> Greg Parker email@hidden <mailto:email@hidden> Runtime Wrangler
>
>
>
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