kotlin-fork/compiler/testData/diagnostics/tests/dataFlowInfoTraversal/WhenIn.fir.kt

// !CHECK_TYPE

fun foo(x: Int, list: List<Int>?) {
    when (x) {
        in list!! -> checkSubtype<List<Int>>(list)
        else -> {}
    }
}

fun whenWithoutSubject(x: Int, list: List<Int>?) {
    when {
        x in list!! -> checkSubtype<List<Int>>(list)
        else -> {}
    }
}