> On May 10, 2016, at 4:39 PM, Quincey Morris
> <[email protected]> wrote:
>
> On May 10, 2016, at 16:22 , Carl Hoefs <[email protected]
> <mailto:[email protected]>> wrote:
>>
>> I will set 'context' and use it in my check instead.
>
> Yup, use the context to decide whether to call super *and return* but nothing
> else. Once you get past that check, don’t call super.
>
>> It appears that for some odd reason, once in a blue moon, 'object' and
>> 'keyPath' aren't what they're supposed to be,
>
> It’s not odd, if they’re the object and keyPath of a different observation
> registered by a superclass of your class. You’ve proved it happens!
>
Now that I've changed things over to use the context value, I get this at the
moment I add an NSOperation to the NSOperationQueue:
[uploadQueue addOperation:opn]; <-- Thread 1, EXC_BAD_ADDRESS (code=1,
address=0xc)
(lldb) po uploadQueue
<NSOperationQueue: 0x17e76d20>{name = 'Upload Queue'}
(lldb) po opn
<NSInvocationOperation: 0x17de5890>
(lldb) bt
* thread #1: tid = 0x207807, 0x204e3a86 libobjc.A.dylib`objc_msgSend + 6, stop
reason = EXC_BAD_ACCESS (code=1, address=0xc)
frame #0: 0x204e3a86 libobjc.A.dylib`objc_msgSend + 6
frame #1: 0x2151e27e Foundation`-[NSObject(NSKeyValueObservingPrivate)
_changeValueForKeys:count:maybeOldValuesDict:usingBlock:] + 278
frame #2: 0x214822d0 Foundation`-[NSObject(NSKeyValueObservingPrivate)
_changeValueForKey:key:key:usingBlock:] + 68
frame #3: 0x2152f760 Foundation`__addOperations + 1528
* frame #4: 0x000ac9b4 iApp`-[AppSetupConfigViewController
saveAppSettings:](self=0x17ed4e20, _cmd="saveAppSettings:", sender=0x17ed2200)
+ 5776 at AppSetupConfigViewController.m:275
frame #5: 0x25322520 UIKit`-[UIApplication sendAction:to:from:forEvent:] +
80
frame #6: 0x253224b0 UIKit`-[UIControl sendAction:to:forEvent:] + 64
frame #7: 0x2530a3ea UIKit`-[UIControl _sendActionsForEvents:withEvent:] +
466
frame #8: 0x25321dd0 UIKit`-[UIControl touchesEnded:withEvent:] + 616
frame #9: 0x25321a3e UIKit`-[UIWindow _sendTouchesForEvent:] + 646
frame #10: 0x2531a3c6 UIKit`-[UIWindow sendEvent:] + 642
frame #11: 0x252eac84 UIKit`-[UIApplication sendEvent:] + 204
frame #12: 0x252e9228 UIKit`_UIApplicationHandleEventQueue + 5016
frame #13: 0x20cdba66
CoreFoundation`__CFRUNLOOP_IS_CALLING_OUT_TO_A_SOURCE0_PERFORM_FUNCTION__ + 14
frame #14: 0x20cdb656 CoreFoundation`__CFRunLoopDoSources0 + 454
frame #15: 0x20cd99be CoreFoundation`__CFRunLoopRun + 806
frame #16: 0x20c28288 CoreFoundation`CFRunLoopRunSpecific + 516
frame #17: 0x20c2807c CoreFoundation`CFRunLoopRunInMode + 108
frame #18: 0x22244af8 GraphicsServices`GSEventRunModal + 160
frame #19: 0x253532c4 UIKit`UIApplicationMain + 144
frame #20: 0x000c86c6 iApp`main(argc=1, argv=0x00327bd4) + 122 at main.m:14
(lldb)
-Carl
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