Using a C undefined struct from Swift

[johannesweiss]

@JetForMe

Huh. That seems to drop a lot of helpful type information

Yes, it's very sad. Please check the following two threads which also cover the issue:

• Opaque Pointers in Swift
• C Interoperability: Import "struct Incomplete *" as Unsafe(Mutable)RawPointer rather than OpaquePointer