Compiler error with DelayedInit

I've opened a issue for a compiler error with DelayedInit.Until isn't solved, someone knows a workaround?
https://issues.scala-lang.org/browse/SI-4683
Error in Scala compiler: symbol value $outer does not exist in net.fwbrasil.activate.DelayedInitTest$C$delayedInit$body.apply

class DelayedInitTest {

def a = println("a")

trait A extends DelayedInit with Idable {
def delayedInit(body: => Unit) = {
body
}
}

class C extends A {
a
}

}

-- 
Flávio W. Brasil