[swift-users] Initializer inheritance doesn't work with generic class?

[Neil Faiman]

This compiles fine:

    class Sup {
        init(supDes: Int) {}
        convenience init(supCon: Int) { self.init(supDes: supCon) }
    }

    class Sub : Sup {
        convenience init(subCon1: Int) { self.init(supDes: subCon1) }
        convenience init(subCon2: Int) { self.init(supCon: subCon2) }
    }

But if I make the classes generic:

    class Sup<T> {
        init(supDes: T) {}
        convenience init(supCon: T) { self.init(supDes: supCon) }
    }

    class Sub<T> : Sup<T> {
        convenience init(subCon1: T) { self.init(supDes: subCon1) }
        convenience init(subCon2: T) { self.init(supCon: subCon2) }
    }

the compiler is doesn’t like it:

    error: argument labels '(supDes:)' do not match any available overloads
            convenience init(subCon1: T) { self.init(supDes: subCon1) }
                                                ^   ~~~~~~~~~~~~~~~~~
    note: overloads for 'Sub<T>.init' exist with these partially matching parameter lists: (subCon1: T), (subCon2: T)
            convenience init(subCon1: T) { self.init(supDes: subCon1) }
                                                ^
    error: argument labels '(supCon:)' do not match any available overloads
            convenience init(subCon2: T) { self.init(supCon: subCon2) }
                                                ^   ~~~~~~~~~~~~~~~~~
     note: overloads for 'Sub<T>.init' exist with these partially matching parameter lists: (subCon1: T), (subCon2: T)
            convenience init(subCon2: T) { self.init(supCon: subCon2) }
                                                ^

Expected behavior? Implementation limitation? Bug?

Thanks,

	Neil Faiman