// SKIP_TXT
// ISSUE: KT-55024
// MODULE: a
interface A {
    fun foo()
}

internal sealed class B(val x: A) : A {
    override fun foo() {}
    fun bar() {}
}

// MODULE: b(a)
@Suppress("INVISIBLE_REFERENCE", "INVISIBLE_MEMBER")
private fun test_1(x: A) {
    if (x is B) {
        x.foo()
        <!DEBUG_INFO_SMARTCAST!>x<!>.bar()
    }
}