I need to pass a `kotlinx.cinterop.CPointer<kotlinx.cinterop.ObjCObjectVar<platform.Foundation...

# kotlin-native

[ribesg]

I need to pass a kotlinx.cinterop.CPointer<kotlinx.cinterop.ObjCObjectVar<platform.Foundation.NSError?>>? to an ObjC function, is it how you do it?

var error: NSError? = null
    val errorPtr = ObjCObjectVar<NSError?>(error.objcPtr()).ptr

[ribesg]

Also, let’s say that works. I get a NSError instance. I can’t throw that. Is there still no built-in way to convert from NSError to Throwable (and vice-versa) ?

[Kris Wong]

https://stackoverflow.com/questions/54774871/unable-to-reference-kotlinx-cinterop-package-in-kotlin-multiplatform-project

[ribesg]

Is what I did equivalent? I’m going to change to using alloc but I still wonder

[svyatoslav.scherbina]

let’s say that works.

I’m afraid it doesn’t.

Is there still no built-in way to convert from NSError to Throwable (and vice-versa) ?

Does anything prevent you from throwing an exception with NSError inside?

Is what I did equivalent?

No.

[ribesg]

I don’t know much about native, I just wanted to try and transfer the stacktrace from one error type to the other, assuming there is one, but I don’t think there is one. I just did throw Error("...: ${nsError.debugDescription}")

[svyatoslav.scherbina]

NSError doesn’t have a stacktrace.

[Kris Wong]

exceptions are not how errors are handled in Objective-C, hence no stack trace