C(2,3)
()
{
  case class C extends AnyRef with Product with Serializable {
    <caseaccessor> <paramaccessor> private[this] val x: Int = _;
    <stable> <caseaccessor> <accessor> <paramaccessor> def x: Int = C.this.x;
    <caseaccessor> <paramaccessor> private[this] val y: Int = _;
    <stable> <caseaccessor> <accessor> <paramaccessor> def y: Int = C.this.y;
    def <init>(x: Int, y: Int): C = {
      C.super.<init>();
      ()
    };
    <synthetic> def copy(x: Int = x, y: Int = y): C = new C(x, y);
    <synthetic> def copy$default$1: Int = C.this.x;
    <synthetic> def copy$default$2: Int = C.this.y;
    override <synthetic> def productPrefix: String = "C";
    <synthetic> def productArity: Int = 2;
    <synthetic> def productElement(x$1: Int): Any = x$1 match {
      case 0 => C.this.x
      case 1 => C.this.y
      case _ => throw new IndexOutOfBoundsException(x$1.toString())
    };
    override <synthetic> def productIterator: Iterator[Any] = scala.runtime.ScalaRunTime.typedProductIterator[Any](C.this);
    <synthetic> def canEqual(x$1: Any): Boolean = x$1.$isInstanceOf[C]();
    override <synthetic> def hashCode(): Int = {
      <synthetic> var acc: Int = -889275714;
      acc = scala.runtime.Statics.mix(acc, x);
      acc = scala.runtime.Statics.mix(acc, y);
      scala.runtime.Statics.finalizeHash(acc, 2)
    };
    override <synthetic> def toString(): String = scala.runtime.ScalaRunTime._toString(C.this);
    override <synthetic> def equals(x$1: Any): Boolean = C.this.eq(x$1.asInstanceOf[Object]).||(x$1 match {
  case (_: C) => true
  case _ => false
}.&&({
      <synthetic> val C$1: C = x$1.asInstanceOf[C];
      C.this.x.==(C$1.x).&&(C.this.y.==(C$1.y)).&&(C$1.canEqual(C.this))
    }))
  };
  <synthetic> object C extends scala.runtime.AbstractFunction2[Int,Int,C] with Serializable {
    def <init>(): C.type = {
      C.super.<init>();
      ()
    };
    final override <synthetic> def toString(): String = "C";
    case <synthetic> def apply(x: Int, y: Int): C = new C(x, y);
    case <synthetic> def unapply(x$0: C): Option[(Int, Int)] = if (x$0.==(null))
      scala.None
    else
      Some.apply[(Int, Int)](scala.Tuple2.apply[Int, Int](x$0.x, x$0.y))
  };
  Predef.println(C.apply(2, 3))
}
error!