Add a symbolic breakpoint on a selector in Xcode

Question

There\'s a bug in my app which shows up with the following (partial) stacktrace:

2011-11-25 01:55:59.760 Events2[6650:403] -[Event boolValue]: unrecognized selec         


        

Answer 1

Setting a breakpoint on a selector causes lldb to halt when that selector is executed, not when it is sent. In your case, there is no selector "-[Event boolValue]", therefore this breakpoint will never be hit.

I would set an exception breakpoint on "All Objective-C Exceptions". This will be hit when the "unrecognized selector sent" exception is thrown and you can see where the problem occurs.