> On Oct 24, 2016, at 2:24 PM, Ryan Lovelett via swift-users
> <swift-users@swift.org> wrote:
>
> import CommonCrypto
>
> protocol Foo {
> associatedtype Context
> var context: Context { get set }
> var bar: (UnsafeMutablePointer<Context>!, UnsafeRawPointer!, CC_LONG)
> -> Int32 { get }
> }
>
> struct SHA1: Foo {
> var context: CC_SHA1_CTX
> var bar: (UnsafeMutablePointer<CC_SHA1_CTX>!, UnsafeRawPointer!,
> CC_LONG) -> Int32 = CC_SHA1_Update
> }
>
> Unfortunately this will not compile any longer with Swift 3.0. The error
> is: Implicitly unwrapped optionals are only allowed at top level and as
> function results.
>
> I can try modifying `bar` definition to be `?` instead of `!` but then
> `CC_SHA1_Update`) can no longer be assigned to `bar`.
>
> Suggestions?
Not being able to assign the function reference is a bug. As a workaround, you
should be able to unsafeBitCast CC_SHA1_Update to the appropriate type.
-Joe
_______________________________________________
swift-users mailing list
swift-users@swift.org
https://lists.swift.org/mailman/listinfo/swift-users
