duplicates:

• SR-4325 Changed value of #file on 3.1 snapshot

Issue Description:

Hi There

When upgrading an existing project from Swift 3.0 to 3.1 some of my unit test started failing due to properties in an enum not being initialised via #file, #function, #line.

Observed outcome:
Enum properties initialised via #file, #function, #line are empty.

Expected outcome:
Enum properties initialised via #file, #function, #line contain the source location.

Example code:

public enum MyEnum {
    case SourceLocation(file: String, function: String, line: Int)
}

class Main {
    private let initialisedEnum =
        MyEnum.SourceLocation(file: #file, function: #function, line: #line)
    
    func run() {
        print("Swift 3.1 XCode 8.3 initialisation issue")
        if case .SourceLocation(let file, let function, let line) = initialisedEnum {
            print("file: \"\(file)\"")
            print("function: \"\(function)\"")
            print("line: \(line)")
        }
    }
}

let main = Main()
main.run()

Swift 3.1 XCode 8.3 initialisation issue
file: ""
function: ""
line: 0
Program ended with exit code: 0

Condition:
The problem only occurs, if the variable initialisedEnum is declared and initialised in the class. If the variable is declared and initialised outside the class or within the function run(), it works as expected. It also works, if the variable is declared in the class and initialised in a constructor.

Cheers
Martin