UnusedPrivateMembers on expect class

[fardavide]

Expected Behavior

Function members should not be reported for except class

Observed Behavior

Functions members are reported for expect class

Steps to Reproduce

// _DetektTest.kt

expect class DetektTest  {
    fun test(i: Int)
}

• write actual declarations that uses the param i
• run Detekt on CLI and notice the following report:
  UnusedPrivateMember - [i] at ~/_DetektTest.kt:2:14

Context

none

Your Environment

• Version of detekt used: 1.8.0
• Version of Gradle used (if applicable): 6.3 stable
• Operating System and version: macOS 10.15.4 (19E287)
• Link to your project (if it's a public repository): https://github.com/4face-studi0/Covid19

[mikesamuel]

I also see this behavior for formal parameters to an expected class constructor or expected function.

expect class Foo(x: Int, y:Int)

expect fun foo(x: Int, y: Int)

Also on release 1.8.0 I get

 style - 20min debt
        UnusedPrivateMember - [x] at .../Foo.kt:14:16
        UnusedPrivateMember - [y] at .../Foo.kt:14:24
        UnusedPrivateMember - [x] at .../Foo.kt:12:18
        UnusedPrivateMember - [y] at .../Foo.kt:12:26

I can workaround via @Suppress("UnusedPrivateMember") on the expect declarations.