Constant Expressions not allowed as ClassfileAnnotation annotation arguments: Array(""); constant value definition containing class, or Array

[scabug]

I would expect all of these to compile.

class T(value: Any) extends ClassfileAnnotation
 
object Holder {
   final val as = Array(1, 2, 3)
   final val a = 1
   final val cint = classOf[Int]
}

import Holder._
 
@T(classOf[Int])
@T(cint) // error: annotation argument needs to be a constant; found: cint
@T(Array("", "", "")) // error: annotation argument needs to be a constant; found: as
@T(as) // error: annotation argument needs to be a constant; found: as
@T(1)
@T(a)
class Target

Tested with 2.8.0.Beta1 and 2.8.0.r21166-b20100315020141.

[scabug]

Imported From: https://issues.scala-lang.org/browse/SI-3183?orig=1
Reporter: @retronym

[scabug]

@lrytz said:
(In r21309) close #3183. review by community

[scabug]

@lrytz said:
note that the a reference to an array stored in a final field is still not valid.

the reason is that the scala compiler cannot represent array literals as constants internally, changing this would be more involved and extend the scope of a ticket fix.