Open Radar

 
Summary:
When canceling local notifications, if you pass in `nil` to -cancelLocalNotification:, everything goes boom and is ruined forever. Or, at least, momentarily. The app crashes, is what I'm trying to get at.

Steps to Reproduce:
1. Have code that boils down to `[[UIApplication sharedApplication] cancelLocalNotification:nil];` somewhere in your app.
2. Have it run.

Expected Results:
1. Nothing. Nil was passed in. Silently stop working 'cause theres nothing else to do.

Actual Results:
The world ends. Maximum entropy occurs. Etc etc. At the end of the day, my app crashed and I was sad.

2013-11-15 12:21:04.525 LocalNotification[38091:70b] *** Terminating app due to uncaught exception 'NSInvalidArgumentException', reason: '*** -[__NSPlaceholderArray initWithObjects:count:]: attempt to insert nil object from objects[0]'
*** First throw call stack:
(
	0   CoreFoundation                      0x0174c5e4 __exceptionPreprocess + 180
	1   libobjc.A.dylib                     0x014bb8b6 objc_exception_throw + 44
	2   CoreFoundation                      0x01700316 -[__NSPlaceholderArray initWithObjects:count:] + 390
	3   CoreFoundation                      0x01723ce9 +[NSArray arrayWithObject:] + 73
	4   SpringBoardServices                 0x03c6671c +[SBSLocalNotificationClient cancelLocalNotification:] + 44
	5   UIKit                               0x0023e9fe -[UIApplication cancelLocalNotification:] + 43
	6   LocalNotificationDemo                   0x00001c71 -[LNAppDelegate application:didFinishLaunchingWithOptions:] + 129
	…
)

Regression:
I don't know if this ever didn't happen. I can't install older OS's on my test devices to check.