> On Oct 7, 2016, at 7:02 AM, Ingo Maier via swift-users 
> <swift-users@swift.org> wrote:
> 
> Is there a way in Swift 3 to pass a null pointer to a C function that
> takes an implicitly unwrapped unsafe pointer? I understand that
> pointer parameters in C that don't specify nullability are mapped to
> implicitly unwrapped pointers in Swift 3. Since it's not uncommon for
> existing unannotated C APIs to accept null pointers, I assume there
> has to be a way other than creating my own bridge functions in C. I
> hope I am not wrong.
> 
> I am a bit surprised that I couldn't find an answer to this, neither
> on this list nor on stackoverflow, as I presume I am not the only one
> with this problem. Sorry, if I missed something.

An implicitly unwrapped Optional is still an Optional. You can use `nil` to 
pass a null pointer.

-Joe
_______________________________________________
swift-users mailing list
swift-users@swift.org
https://lists.swift.org/mailman/listinfo/swift-users

Reply via email to