On Nov 29, 2014, at 2:27 PM, Andreas Höschler <ahoe...@smartsoft.de> wrote:
> we just tried one of our apps - doing fine on earlier versions of MacOSX - on > Yosemite. When clicking on a tab of a NSTabView we get the following on the > console and the app stops working (exception not caught): > > 29/11/14 21:21:23,496 SOSmartBrowser[731]: Cannot remove an observer > <GSScrollView 0x7d706e60> for the key path "contentLayoutRect" from <GSWindow > 0x7d71cf50> because it is not registered as an observer. > 29/11/14 21:21:23,499 SOSmartBrowser[731]: ( > 0 CoreFoundation 0x9256c343 __raiseError + 195 > 1 libobjc.A.dylib 0x98481a2a objc_exception_throw > + 276 > 2 CoreFoundation 0x9256c25d +[NSException > raise:format:] + 141 > 3 Foundation 0x99f65b18 > -[NSObject(NSKeyValueObserverRegistration) _removeObserver:forProperty:] + 739 > 4 Foundation 0x99f65787 > -[NSObject(NSKeyValueObserverRegistration) removeObserver:forKeyPath:] + 189 > 5 Foundation 0x99f76919 > -[NSObject(NSKeyValueObserverRegistration) > removeObserver:forKeyPath:context:] + 389 > 6 AppKit 0x9039c0af -[NSScrollView > _setWindow:] + 429 > 7 AppKit 0x9037fe1e __21-[NSView > _setWindow:]_block_invoke_2 + 52 > 8 CoreFoundation 0x9247bc3b __53-[__NSArrayM > enumerateObjectsWithOptions:usingBlock:]_block_invoke + 107 > 9 CoreFoundation 0x9247b27a -[__NSArrayM > enumerateObjectsWithOptions:usingBlock:] + 282 > 10 CoreFoundation 0x9247b0d5 -[NSArray > enumerateObjectsUsingBlock:] + 53 > 11 AppKit 0x90afdca4 __21-[NSView > _setWindow:]_block_invoke746 + 158 > 12 AppKit 0x9035afd5 > -[NSView(NSConstraintBasedLayout) _withAutomaticEngineOptimizationDisabled:] > + 111 > 13 AppKit 0x9035c91d -[NSView > _setWindow:] + 2978 > 14 AppKit 0x90359e6f -[NSView > addSubview:] + 453 > 15 AppKit 0x90359bb7 -[NSView > replaceSubview:with:] + 152 > 16 AppKit 0x90621a4d -[NSTabView > _switchTabViewItem:oldView:withTabViewItem:newView:initialFirstResponder:lastKeyView:] > + 992 > 17 AppKit 0x906212d7 -[NSTabView > selectTabViewItem:] + 568 > 18 AppKit 0x90a072ce -[NSTabView > mouseDown:] + 166 > 19 AppKit 0x90b24c24 -[NSWindow > _reallySendEvent:] + 12353 > 20 AppKit 0x9050dfb9 -[NSWindow > sendEvent:] + 409 > 21 AppKit 0x904bba27 -[NSApplication > sendEvent:] + 4679 > 22 AppKit 0x90335e0c -[NSApplication run] > + 1003 > 23 AppKit 0x9031f310 NSApplicationMain + > 2082 > 24 libdyld.dylib 0x98c466d9 start + 1 > 25 ??? 0x00000002 0x0 + 2 > ) > > I am rather clueless since the exception is raised in Apples code!? What in > our GSScrollView (NSScrollView) and GSWindow (NSWindow) subclasses could > cause this problem on Yosemite? You should look for memory management bugs, (possibly inadvertent) overrides of superclass properties where you fail to call through to the superclass or for which you fail to maintain KVO compliance, or overrides of KVO methods (e.g. -observeValueForKeyPath:…) which fail to call through to the superclass when the context is not the unique context you supplied when setting up the observation. For the memory management bugs, build with the static analyzer and fix any problems it identifies. Run your app under the Zombie instrument and try to reproduce the crash. Regards, Ken _______________________________________________ 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: https://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
