duplicates:

• SR-4827 Incorrect result resolving type for Obj-C block

Issue Description:

I've discovered an issue with @objc which I think is a bug. I've discussed the issue at the #swift-lang IRC channel before creating this issue. The situation is the following:

1. Create a Swift class and add the @objc attribute. Make sure to rename the class for use in Objective C - e.g. @objc(MKCBar)

2. Next use the class (e.g. `MKCBar`) in an Objective C file (e.g. `MKCFoo`) - like adding a property. In the header use forward declaration (@Class MKCBAR) and in the implementation file import the autogenerated Swift header file.

3. Add the Objective C file to the bridging header (MKCFoo.h) and thereby making it available to Swift

4. In another Swift file (Bas.swift) try to create an instance of the Objective C object and try to access the property which is defined using the forward declaration.

5. Sadly you can't!!!!

6. Remove the renaming from the @objc attribute and correct the forward declaration and import in the Objective C file.

7. Now you are able to use the property but lost the ability to rename the class

I've attached a tiny sample project - please look at the Baz.swift file. Alternatively have a look at this blog post which also describes the problem: https://cjwirth.com/tech/circular-references-swift-objc