On Dec 22, 2011, at 3:58 PM, Roland King wrote: > > On Dec 23, 2011, at 1:19 AM, Matt Neuburg wrote: > >> On Thu, 22 Dec 2011 21:13:07 +0800, Roland King <r...@rols.org> said: >>> You used to get a handy message logged to the console when an object with >>> KVO registered on it was deallocated, but not in either of these two cases >>> (and I can quite clearly demonstrate that the object was dealloc'ed with >>> dangling KVO). Has that message been removed >> >> No, I can easily generate it - all you have to do is register for KVO and >> let the object vanish at the end of the scope (which, under ARC, it will if >> it wasn't assigned to an ivar): >> >> "An instance 0x6805020 of class MyClass1 was deallocated while key value >> observers were still registered with it. Observation info was leaked, and >> may even become mistakenly attached to some other object. Set a breakpoint >> on NSKVODeallocateBreak to stop here in the debugger. Here's the current >> observation info:" >> >> So presumably something else is going on here; perhaps you haven't quite >> gotten to the root of your problem yet. m. >> > > I had, but my memory of the message was flawed. If you have objects A and B, > and A observes a property of B and you dealloc B, you get the message, as you > showed. In my case A was observing B and A was dealloc()ed without me > removing the observation first. Eventually the observed property on B changed > and it tried to send a KVO notification to a dead object. Once you posted the > text of the message again it was obvious I had the reverse situation.
Excellent - thanks for drawing that distinction. m. -- matt neuburg, phd = m...@tidbits.com, http://www.apeth.net/matt/ pantes anthropoi tou eidenai oregontai phusei Among the 2007 MacTech Top 25, http://tinyurl.com/2rh4pf Programming iOS 4! http://www.apeth.net/matt/default.html#iosbook RubyFrontier! http://www.apeth.com/RubyFrontierDocs/default.html TidBITS, Mac news and reviews since 1990, http://www.tidbits.com _______________________________________________ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
