On 14, Jan, 2013, at 03:31 PM, Jerry Krinock <je...@ieee.org> wrote:

>> Will -autorelease work with ARC?
> 
> I don't think so.  I didn't realize you were using ARC.  I suppose you could 
> opt out of ARC in your Method Replacement file, in order to compile that 
> -autorelease.
> 
>> Could you hint how to do that? A category on NSTreeController?
> 
> 
> I can't find the article on Apple's site any more, but here it is from the 
> horses's mouth, probably written better…
> 
> http://mikeash.com/pyblog/friday-qa-2010-01-29-method-replacement-for-fun-and-profit.html
> 
> Method Replacement is a good occasional last resort, particularly in 
> troubleshooting, but you can ship it if necessary.

Thanks for the pointers. Though after some further work, the test app now has 
only a very few lines of custom code, and the 'bug' is still there. The use of 
[NSTreeController selectedObjects] is gone, so that was a red herring (though 
the retaining may still be going on behind the scenes). 

So I've opened a ticket with Apple to get some support. I'll post back if they 
come up with a solution.

Many thanks,

Martin






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