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Re: Compiling GC apps under OS X 10.8
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Re: Compiling GC apps under OS X 10.8


  • Subject: Re: Compiling GC apps under OS X 10.8
  • From: Sean McBride <email@hidden>
  • Date: Mon, 01 Oct 2012 12:48:05 -0400
  • Organization: Rogue Research Inc.

On Mon, 1 Oct 2012 10:52:26 +1000, Shane Stanley said:

>I have a GC app with a deployment version of 10.6. If I compile it in
>4.5 under OS X 10.8, using either 10.8 or 10.7 SDK, and run the
>resulting app in OS X 10.6, I gets lots of this sort of error:
>
>objc[201]: GC: 0x10029cf20 + 24 isn't in the auto_zone, break on
>objc_assign_ivar_error to debug.
>objc[201]: GC: 0x10029cf20 + 8 isn't in the auto_zone, break on
>objc_assign_ivar_error to debug.
>objc[201]: GC: 0x10029cf20 + 64 isn't in the auto_zone, break on
>objc_assign_ivar_error to debug.
>objc[201]: GC: 0x10029cf20 + 72 isn't in the auto_zone, break on
>objc_assign_ivar_error to debug.
>objc[201]: GC: 0x100290670 + 48 isn't in the auto_zone, break on
>objc_assign_ivar_error to debug.
>objc[201]: GC: 0x103592630 + 48 isn't in the auto_zone, break on
>objc_assign_ivar_error to debug.
>
>It also occurs under 10.7, although less often and less predictably.

I believe I've seen them too (though am in 10.7 right now).  I just brushed them off as harmless warnings... do you think they are more than that?

>Or should I just give up on compiling GC stuff under Xcode versions
>later than 4.3.3, and therefore 10.8?

Clearly moving to ARC is in order... but it's no small task to just totally change an applications's memory model out from underneath it... :(

Cheers,

--
____________________________________________________________
Sean McBride, B. Eng                 email@hidden
Rogue Research                        www.rogue-research.com
Mac Software Developer              Montréal, Québec, Canada



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