On 25 Feb 2014, at 2:39 PM, Pax <[email protected]> wrote:
> This is a really weird problem (in my view, anyway), because it only occurs
> in a very particular set of circumstances. My application is NSDocument
> based (just in case it makes a difference), and my application uses ARC.
[Detailed description of various does-work execution paths]
> If I open the document and then double click on a file in the list, but then
> close my document **before** closing the newly opened file my application
> crashes with "message sent to deallocated instance".
You don’t say whether you have profiled the app with Instruments, using the
Zombies template, which is the first-resort method for handling this situation.
Product > Scheme > Edit Scheme… (cmd-<), and make sure the target you want to
investigate is selected at the top-left popup. Select the Profile action, and
then Zombies in the Instrument popup. Run the Profile action (various ways,
including Product > Profile, cmd-I).
Reproduce your bug, and examine the Allocations trace to see the retain/release
history of the object in question. At least you’ll know more, and can refine
your question.
— F
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