This works fine for me in a playground in the latest Xcode 9 beta:
class Test { }
class Base<T: AnyObject> { }
class Sub: Base<Test> { }
let sub = Sub()
Jon
> On Aug 29, 2017, at 1:04 PM, Joanna Carter via swift-users
> <swift-users@swift.org> wrote:
>
> Hi
>
> I would have hoped by now that it should be possible to do :
>
> class BaseObject<rootType : AnyObject>
> {
> }
>
> class Test : BaseObject<Test>
> {
> }
>
> All compiles well but, at runtime, when calling let test = Test(), I get a
> "EXC_BAD_INSTRUCTION (code=EXC_I386_INVOP, subcode=0x0)" error.
>
> This is something I have been able to do in C# for many a year. Why oh why
> can I still not do it in Swift ?
>
> Joanna
>
> --
> Joanna Carter
> Carter Consulting
>
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