Why can't I see the invoking method in the debugger?

a beginner question about xCode debu开发者_JAVA百科gger.

- (void)searchDidFinished:(NSDictionary *)info

method is invoked and I'm trying to determine who is the invoker but as you can see the call stack doesn't help me: http://cl.ly/AaE4

Why ?

I've also checked if the method is linked in Interface Builder. But this is not the case.

thanks

It looks like the selector is being called via performSelectorOnMainThread: or performSelector:afterDelay in which case you won't be able to see the original caller.