compile-time-only-a.scala:41: error: C5
  2.ext
  ^
compile-time-only-a.scala:42: error: C5
  C5(2)
  ^
compile-time-only-a.scala:45: error: C6.x
  val _ = c6.x
             ^
compile-time-only-a.scala:46: error: C6.foo
  c6.foo
     ^
compile-time-only-a.scala:48: error: C6.y
  c6.y = c6.y
     ^
compile-time-only-a.scala:48: error: C6.y
  c6.y = c6.y
            ^
compile-time-only-a.scala:54: error: placebo
@placebo
 ^
compile-time-only-a.scala:56: error: placebo
  @placebo def x = (2: @placebo)
   ^
compile-time-only-a.scala:56: error: placebo
  @placebo def x = (2: @placebo)
                        ^
9 errors found