Open Radar

 
Summary:
Examine the following swift class:

class MyDictionary : NSDictionary {
    convenience init(beAwesome:Bool) {
        if (beAwesome) {
            self.init(object: true, forKey:"awesome")
        } else {
            self.init(object: false, forKey:"awesome")
        }
    }
}

This class does not compile. However, if the class inherits from this Swift class:
class MyClass {
    var object: AnyObject!
    var key: NSCopying!
    convenience init(object: AnyObject!, forKey key: NSCopying!) {
        self.init()
        self.object = object
        self.key = key
    }
}

It works perfectly. It appears the Swift compiler is handling the inheritance of NSDictionary's convenience and delegated initializers differently than it handles Swift classes. This same error occurs for other Objective-C classes as well.

Steps to Reproduce:
1. Paste the first class into an Xcode playground
2. Open the assistant editor
3. Notice that the code didn't compile, and spit out a bunch of errors into the console output

Expected Results:
The code compiles

Actual Results:
The following error is printed:

Playground execution failed: error: <REPL>:8:13: error: use of 'self' in delegating initializer before self.init is called
            self.init(object: true, forKey:"awesome")
            ^
<REPL>:8:18: error: use of 'self' in delegating initializer before self.init is called
            self.init(object: true, forKey:"awesome")
                 ^
<REPL>:10:13: error: use of 'self' in delegating initializer before self.init is called
            self.init(object: false, forKey:"awesome")
            ^
<REPL>:10:18: error: use of 'self' in delegating initializer before self.init is called
            self.init(object: false, forKey:"awesome")
                 ^
<REPL>:12:5: error: self.init isn't called on all paths in delegating initializer
    }
    ^

Version:
6.0/6A216f 10.9.3/13D65

Notes:
I've asked this question on Stack Overflow as well: http://stackoverflow.com/q/24373142