Unrecognized selector sent to instance

[avnerbarr]

I'm getting a crash on a UIViewController viewDidAppear

Its an awkward situation where LLDB says that the instance responds to selector but when actually sending the message it says it doesn't.

Is this an aspect issue?

(lldb) po [0x7fce2b95d480 class]
XXXViewController
(lldb) e (BOOL)[0x7fce2b95d480 respondsToSelector:@selector(viewDidAppear:)]
(BOOL) $2 = YES
(lldb) e (void)[0x7fce2b95d480 viewDidAppear:YES]
error: Execution was interrupted, reason: breakpoint 1.1.
The process has been returned to the state before expression evaluation.
2015-12-13 18:19:09.316 [13959:7671911] -[XXXViewController viewDidAppear:]: unrecognized selector sent to instance 0x7fce2b95d480