Compiler silently captures private fields in inline fun

1

 

class Abc



class Obj{

  private val props = HashMap<String, Any>()


  inline fun <reified T> invoke():T = props.values().first { it is T } as T

}


fun main(args: Array<String>) {

  val obj = Obj()

  println(obj<Abc>())

}


Output:

Exception in thread “main” java.lang.IllegalAccessError: tried to access field rule2.Obj.props from class rule2.Rule2Package$Main$c9203aaa


This is runtime err. I suggest compiletime err.

2

Yes, this is a known issue: https://youtrack.jetbrains.com/issue/KT-6453. You can star or vote for it. Thanks!