Open Radar

 
Summary:
Under Swift 1.2 as included in Xcode 6.3 build 6D520o, trying to call an Objective-C method with a parameter bridged to type “AutoreleasingUnsafeMutablePointer<T>”, where T is an optional type, is not possible. The Swift compiler emits the following error: “Cannot invoke 'scanCharactersFromSet' with an argument list of type '(NSCharacterSet, intoString: inout String)'” Calling a method using this type where T is not optional works just fine.

Steps to Reproduce:
1. Install Xcode 6.3 beta, build 6D520o.
2. Open the playground file attached to this radar
3. Observe the error; it should occur on line #9.

Expected Results:
The project or playground should compile with no errors.

Actual Results:
The project or playground does not compile, and the Swift compiler emits the following error:

Cannot invoke 'scanCharactersFromSet' with an argument list of type '(NSCharacterSet, intoString: inout String)'

Version:
Xcode build 6D520o, OS X build 14C109

Notes:
There is no workaround that I know of; even calling a method where the parameter in question is annotated as "__nonnull" does not work.

Configuration:
Xcode 6.3 beta 6D520o on model "MacBookPro11,1".