// WITH_RUNTIME
//DISABLE-ERRORS
enum class E {
    A {
        override fun foo(x: Int): Int {
            throw UnsupportedOperationException()
        }
    }, B {
        override fun foo(x: Int): Int {
            throw UnsupportedOperationException()
        }
    }, C {
        override fun foo(x: Int): Int {
            throw UnsupportedOperationException()
        }
    };

    abstract fun <caret>foo(x: Int): Int
}