Inline function cannot access non-public-API: @PublishedApi vs @Suppress vs @JvmSynthetic

Question

In Kotlin, when I have a non-public member and an inline fun that calls it, there\'s a compilation error saying:

Error:(22, 25) Kotlin: Publ

Answer 1

@PublishedApi internal is the intended way of exposing non-public API for using in public inline functions.

That @PublishedApi internal member becomes effectively public and its name doesn't get mangled (if you noticed the opposite, please file a bug).

@Suppress("NON_PUBLIC_CALL_FROM_PUBLIC_INLINE") is a band-aid workaround in the lack of @PublisedApi based on suppressing an error and therefore isn't recommended. With the introduction of @PublishedApi this suppression is going to be cleaned from stdlib.

@JvmSynthetic combined with @PublishedApi is an interesting approach, however it can cause some problems while debugging, though I'm not sure.