manifest of f bounded Java class results in typer stackoverflow

[scabug]

import scala.reflect.Manifest

class Test {
   implicitly[Manifest[Enum[_]]]
}

This results in:

Exception in thread "main" java.lang.StackOverflowError
	at scala.tools.nsc.typechecker.Contexts$Context.nextOuter(Contexts.scala:606)
	at scala.tools.nsc.typechecker.Contexts$Context.implicitss(Contexts.scala:837)
	at scala.tools.nsc.typechecker.Contexts$Context.withOuter$1(Contexts.scala:839)
	at scala.tools.nsc.typechecker.Contexts$Context.implicitss(Contexts.scala:860)

Since:

scala/scala#3471 / #6169

[scabug]

Imported From: https://issues.scala-lang.org/browse/SI-9276?orig=1
Reporter: @retronym
Affected Versions: 2.11.0
See #6169