warning: language version 2.0 is experimental, there are no backwards compatibility guarantees for new language and library features
compiler/testData/cli/jvm/firError.kt:1:13: error: 'val' on function parameter is not allowed
fun println(val x: Int) {}
            ^
compiler/testData/cli/jvm/firError.kt:5:13: error: variable 'x' must be initialized
    println(x)
            ^
compiler/testData/cli/jvm/firError.kt:10:16: error: public subclass exposes its private-in-file supertype 'Private'
class Public : Private() {
               ^
compiler/testData/cli/jvm/firError.kt:10:16: error: this type is final, so it cannot be inherited from
class Public : Private() {
               ^
compiler/testData/cli/jvm/firError.kt:11:5: error: property must be initialized or be abstract
    val x: Private
    ^
compiler/testData/cli/jvm/firError.kt:11:9: error: public property exposes its private-in-file type 'Private'
    val x: Private
        ^
COMPILATION_ERROR