[SR-1283] RawRepresentable extension for Self:NSCoding breaks implicit RawRepresentable implementation for enums

[swift-ci]

Previous ID	SR-1283
Radar	None
Original Reporter	josh (JIRA User)
Type	Bug

Environment

Apple Swift version 2.2 (swiftlang-703.0.18.1 clang-703.0.29)

Additional Detail from JIRA

Votes	0
Component/s	Compiler
Labels	Bug, StarterBug
Assignee	None
Priority	Medium

md5: ebcb1594c186768ea99ccc914c314b25

Issue Description:

Copy + paste attached sample code into a Playground.

import Foundation

enum Status: Int {
    case Good
    case Bad
}

extension RawRepresentable where Self: NSCoding {
    init?(rawValue: NSData) {
        if let instance = NSKeyedUnarchiver.unarchiveObjectWithData(rawValue) as? Self {
            self = instance
        } else {
            return nil
        }
    }
    
    var rawValue: NSData {
        get {
            return NSKeyedArchiver.archivedDataWithRootObject(self)
        }
    }
}

[belkadan]

Ah, cause we find an initializer named init(rawValue:), even though it doesn't match the constraints for this particular type. We should change this lookup to not search extensions, I guess. Can't remember if there's an easy way to do that.

[Dante-Broggi]

Is this resolved, or no longer valid? If either, this should be closed.