What's the quickest way to force an iOS app to crash?

@throw NSInternalInconsistencyException;

So many ways to kill an app! Here are two one liners:

[self performSelector:@selector(die_die)];

also

@[][666];

Just write assert(NO). This checks the condition given as parameter and crashes the app if it is false.

Edit:

exit(0) will also do the trick