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Re: Don't you hate it when Appkit crashes?
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Re: Don't you hate it when Appkit crashes?


  • Subject: Re: Don't you hate it when Appkit crashes?
  • From: Quincey Morris <email@hidden>
  • Date: Fri, 12 Feb 2016 22:45:31 -0800
  • Feedback-id: 167118m:167118agrif8a:167118sGt0F4qaCV:SMTPCORP

On Feb 12, 2016, at 22:24 , Graham Cox <email@hidden> wrote:
>
> It’s deallocated, so AppKit uses that memory for something else. I clobber that memory using a stale reference.
>
> With zombies, the memory isn’t deallocated, it’s just marked as belonging to a zombie. If I try and access it using a stale reference, I’d get a zombie exception. AppKit can’t obtain the memory allocated to a zombie.

Oh, yeah, never mind.

The other ideas that were chasing around my mind were (a) the possibility that CoreAnimation was actually trying to call out to something in your code, or (b) CoreAnimation was using a private shortcut path to ‘release’, so the error reporting doesn’t mean what it would normally mean. In the latter case, it’s not totally impossible that it was after all a zombie object. I don’t think so, I’m just advancing the possibility as a way of emphasizing the difficulty of assigning blame.

If you have a crash log from when this happened, that seems like something you could submit with a bug report. With a prima facie case against CoreAnimation, you could make it Apple’s problem to figure out what went wrong.

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References: 
 >Don't you hate it when Appkit crashes? (From: Graham Cox <email@hidden>)
 >Re: Don't you hate it when Appkit crashes? (From: Quincey Morris <email@hidden>)
 >Re: Don't you hate it when Appkit crashes? (From: Graham Cox <email@hidden>)
 >Re: Don't you hate it when Appkit crashes? (From: Quincey Morris <email@hidden>)
 >Re: Don't you hate it when Appkit crashes? (From: Graham Cox <email@hidden>)

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