Re: Leopard and Tiger Notification Differences?

FROM : Mark Piccirelli
DATE : Fri Feb 08 23:47:47 2008

On Feb 8, 2008, at 1:58 PM, John Nairn wrote:

> I have run into several crashes in Leopard that never happened in 
> Tiger. In all cases, the problem has been a notification sent to a 
> deallocated object. I have been able to fix them, but why do these 
> bugs keep happening in Leopard. Either Tiger was smarter (i.e., not 
> sending messages to deallocated objects) or Leopard is handling 
> notifications differently. I can document a difference now and 
> wonder how is one supposed to know what to expect?


There were some changes in NSWindowController between Tiger and 
Leopard. See the "New Behavior in NSWindowController at Window Closing 
Time" and "Bug Fixes in -[NSWindowController dealloc]" sections in the 
Leopard AppKit release notes at http://developer.apple.com/releasenotes/Cocoa/AppKit.html
. In a couple of places it's not releasing instead of autoreleasing. 
Hopefully that explains what you're seeing.

               -- Mark