Generic typealias in protocol

gistfile1.txt

/*
Xcode 8 beta 6
Apple Swift version 3.0 (swiftlang-800.0.43.6 clang-800.0.38)
Target: x86_64-apple-macosx10.9
*/

struct Generic<A, B> {}

//if typealias is defined inside the concrete type it works:
class SomeClass {
  typealias Alias<A> = Generic<A, SomeClass>
  
  let int: Alias<Int>
  init(int: Alias<Int>) {
    self.int = int
  }
}

//but it does not work from inside protocol
protocol AliasProtocol {
  typealias Alias<A> = Generic<A, Self>
}

class SomeClass: AliasProtocol {
  let int: Alias<Int> //does not compile - "Use of unresolved identifier 'Alias'. Did you mean 'Alias'?"
  
  let int: SomeClass.Alias<Int> //crashes compiler
  
  init(int: SomeClass.Alias<Int>) {
    self.int = int
  }
}