Xcode6-Beta3: Cannot subclass or extend classes from same module in Swift

Originator:jp
Number:rdar://17601747 Date Originated:8/7/2014
Status:Closed Resolved:March 1 2015
Product:Developer Tools Product Version:Version 6.0 (6A254o)
Classification: Reproducible:Always
 
In a mixed Objective-C/Swift framework, I can't subclass or extend Objective-C classes defined in the framework from Swift. Ex.:

```swift
class MySubclass: ClassDefinedInObjC {} // Fails: Attempting to use the forward class 'ClassDefinedInObjC' as superclass of 'MySubclass'

extension ClassDefinedInObjC {} // Fails: Cannot define category for undefined class 'ClassDefinedInObjC'

func useObjCClass() {
    ClassDefinedInObjC().methodOnClass() // Succeeds
}
```

This worked fine with Xcode6-Beta and Xcode6-Beta2, but doesn't work in Xcode6-Beta3.

Steps to Reproduce:
1. Create a framework in Xcode6-Beta3 containing Objective-C and Swift code
2. Create a subclass of a class defined in the Objective-C code from Swift.

Expected Results:
The framework compiles.

Actual Results:
The framework doesn't compile. Error message varies but can display:

- Attempting to use the forward class 'ClassDefinedInObjC' as superclass of 'MySubclass'
- Cannot define category for undefined class 'ClassDefinedInObjC'

Comments

This has been fixed.

By jp at March 1, 2015, 11:14 p.m. (reply...)

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