//!LANGUAGE: +ProhibitTailrecOnVirtualMember

open class A {
    <!TAILREC_ON_VIRTUAL_MEMBER_ERROR!>tailrec open fun foo(x: Int)<!> {
        foo(x)
    }

    <!TAILREC_ON_VIRTUAL_MEMBER_ERROR!>internal tailrec open fun bar(y: Int)<!> {
        bar(y)
    }

    <!TAILREC_ON_VIRTUAL_MEMBER_ERROR!>protected tailrec open fun baz(y: Int)<!> {
        baz(y)
    }

    private tailrec fun boo(y: Int) {
        boo(y)
    }

    internal tailrec fun baa(y: Int) {
        baa(y)
    }
}

open class B : A() {
    final tailrec override fun foo(x: Int) {
        foo(x)
    }

    final tailrec override fun bar(y: Int) {
        bar(y)
    }

    final tailrec override fun baz(y: Int) {
        baz(y)
    }
}


open class C : A() {
    <!TAILREC_ON_VIRTUAL_MEMBER_ERROR!>tailrec override fun foo(x: Int)<!> {
        foo(x)
    }

    <!TAILREC_ON_VIRTUAL_MEMBER_ERROR!>tailrec override fun bar(y: Int)<!> {
        bar(y)
    }

    <!TAILREC_ON_VIRTUAL_MEMBER_ERROR!>tailrec override fun baz(y: Int)<!> {
        baz(y)
    }
}

object D : A() {
    tailrec override fun foo(x: Int) {
        foo(x)
    }

    tailrec override fun bar(y: Int) {
        bar(y - 1)
    }

    tailrec override fun baz(y: Int) {
        baz(y)
    }
}

sealed class E : A() {
    <!TAILREC_ON_VIRTUAL_MEMBER_ERROR!>tailrec override fun foo(x: Int)<!> {
        foo(x)
    }

    <!TAILREC_ON_VIRTUAL_MEMBER_ERROR!>tailrec override fun bar(y: Int)<!> {
        bar(y)
    }

    <!TAILREC_ON_VIRTUAL_MEMBER_ERROR!>tailrec override fun baz(y: Int)<!> {
        baz(y)
    }

    class E1 : E() {
        tailrec override fun foo(x: Int) {
            foo(x)
        }

        tailrec override fun bar(y: Int) {
            bar(y)
        }

        tailrec override fun baz(y: Int) {
            baz(y)
        }
    }
}

enum class F {
    F0,
    F1() {
        tailrec override fun foo(x: Int) {
            foo(x)
        }

        tailrec override fun bar(y: Int) {
            bar(y)
        }

        tailrec override fun baz(y: Int) {
            baz(y)
        }
    };

    <!TAILREC_ON_VIRTUAL_MEMBER_ERROR!>tailrec open fun foo(x: Int)<!> {
        foo(x)
    }

    <!TAILREC_ON_VIRTUAL_MEMBER_ERROR!>internal tailrec open fun bar(y: Int)<!> {
        bar(y)
    }

    <!TAILREC_ON_VIRTUAL_MEMBER_ERROR!>protected tailrec open fun baz(y: Int)<!> {
        baz(y)
    }

    private tailrec fun boo(y: Int) {
        boo(y)
    }

    internal tailrec fun baa(y: Int) {
        baa(y)
    }
}

enum class G {

    G1;

    <!TAILREC_ON_VIRTUAL_MEMBER_ERROR!>tailrec open fun foo(x: Int)<!> {
        foo(x)
    }

    <!TAILREC_ON_VIRTUAL_MEMBER_ERROR!>internal tailrec open fun bar(y: Int)<!> {
        bar(y)
    }

    <!TAILREC_ON_VIRTUAL_MEMBER_ERROR!>protected tailrec open fun baz(y: Int)<!> {
        baz(y)
    }

    private tailrec fun boo(y: Int) {
        boo(y)
    }

    internal tailrec fun baa(y: Int) {
        baa(y)
    }
}

val z = object : A() {
    tailrec override fun foo(x: Int) {
        foo(x)
    }

    tailrec override fun bar(y: Int) {
        bar(y)
    }

    tailrec override fun baz(y: Int) {
        baz(y)
    }
}