File: t8675.scala

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scala 2.11.12-6
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class A(s: String) {
  def foo(x: A) = x
}

class isString(s: String)

class Test {

  def x[A](a: Any): A = ???

  def test {
    val a = Array[A]()
    a.update(0, x[A]({new isString(true)})) // !!! allowed

    // boils down to
    class X {
      def m(p: Any) {}
    }
    implicit class XOps(x: X) {
      def m(p: Any) {}
    }
    new X().m(x[A]({new isString(true)})) // !!! allowed
  }
}