test/files/res/t9170.check


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nsc> t9170/A.scala:3: error: double definition:
def f[A](a: => A): Int at line 2 and
def f[A](a: => Either[Exception,A]): Int at line 3
have same type after erasure: (a: Function0)Int
  def f[A](a: => Either[Exception, A]) = 2
      ^