On 12 Jun 2016, at 10:10, Gerriet M. Denkmann <[email protected]> wrote:
> 
> OS X 10.11.5, Xcode Version 7.3.1 (7D1014).
> 
> App with TableView (View based). Works fine. 
> But when I give the TableView a delegate (even without implementing any 
> NSTableViewDelegate methods) it crashes (see below).
> 
> How to debug this?
> Tried a symbolic breakpoint in  -[__NSArrayM objectAtIndex:] - but it crashes 
> before reaching breakpoint.

Set it to break on exceptions (or put a breakpoint on objc_exception_throw), 
then go back up the call stack?

Alternatively, if that isn’t helpful (and it might well not be), I’d start 
looking to see whether I was doing anything I shouldn’t; for instance, changing 
the number of items in the table view from a data source or delegate method 
where doing that isn't safe.  Not sure how much of that is documented; some of 
it might be assumed to be “obvious”.  Pretty sure I’ve crashed NSTableView 
before that way, and with an index beyond bounds error at that.

Kind regards,

Alastair.

--
http://alastairs-place.net
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