osx - Swift weak delegate runtime error (bad access). Bug? -


i have problem delegates in swift (osx). have view, connected delegate through weak reference. simplified code this:

protocol myprotocol: class {     func protocolfunc() -> int }  class mycontroller : myprotocol {     func protocolfunc() -> int { return 2 } }  class myview : nsview {     weak var delegate: myprotocol?      func grabdata {         var data = delegate?.protocolfunc()     } }

when delegate?.protocolfunc() called, app crashes saying "bad access". it's if mycontroller instance had disappeared... has not. mycontroller instance lives in nsdocument subclass; , view's delegate set.

the crash goes away if declare delegate strong. thing want delegate weak. what's going on? eyes, weak reference should work.

at time of writing (xcode 6 beta 5), there's bug weak delegates. time being, can until fixed change protocol myprotocol: class @objc protocol myprotocol , avoid using pure swift classes in protocol.


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