I have a binding that throws an Objective-C exception but the console displays
no output and the application does not crash but rather the application runs
fine. Enabling NSBindingDebugLogLevel 1 does not help, the console still
displays nothing. I am using Xcode 5.1.1 with the All Exceptions breakpoint
enabled.
[self bind:@"allowSelection"
toObject:_customView.window.windowController
withKeyPath:@“widgetControllerManager.activeWidgetController.allowSelection"
options:nil];
The stack trace looks like this.
#0 0x00007fff909f0e4a in objc_exception_throw ()
#1 0x00007fff8a3f710c in +[NSException raise:format:] ()
#2 0x00007fff94b152a7 in -[NSObject(NSKeyValueCoding) setNilValueForKey:] ()
#3 0x00007fff94a4472e in -[NSObject(NSKeyValueCoding) setValue:forKey:] ()
#4 0x00007fff88549f0d in -[NSObjectParameterBinder
_updateObject:observedController:observedKeyPath:context:] ()
#5 0x00007fff88540f08 in -[NSObject(NSKeyValueBindingCreation)
bind:toObject:withKeyPath:options:] ()
This application contains lots of programatic bindings similar to this one.
However this is the only one which throws an exception.
Should I be concerned about this?
Is there anyway to debug this?
Thanks,
Richard Charles
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