t875.scala:3: error: no `: _*' annotation allowed here
(such annotations are only allowed in arguments to *-parameters)
  val ys = List(1, 2, 3, xs: _*)
                           ^
t875.scala:6: error: no `: _*' annotation allowed here
(such annotations are only allowed in arguments to *-parameters)
  mkList1(xs: _*)
            ^
t875.scala:15: error: no `: _*' annotation allowed here
(such annotations are only allowed in arguments to *-parameters)
  f(true, 1, xs: _*)
               ^
t875.scala:16: error: no `: _*' annotation allowed here
(such annotations are only allowed in arguments to *-parameters)
  g(1, xs:_*)
         ^
four errors found