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Compiler hangs #10227

scabug opened this Issue Mar 15, 2017 · 1 comment


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scabug commented Mar 15, 2017

The following hangs the compiler:

trait Data { self =>
  type Type >: self.type

trait Eq[Type <: Data, A <: Type, B <: Type] { ab =>
  final def lift[F[_ <: Type] <: Data]: Eq[Type, F[A], F[B]] =
    Eq.lift[A, B, F](ab)

object Eq {
  def lift[A <: Data, B <: A#Type, F[_ <: A#Type] <: Data](eq: Eq[A#Type, A, B]): Eq[A#Type, F[A], F[B]] = ???

It should be possible to minimize it further.


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scabug commented Mar 15, 2017

Imported From:
Reporter: Alexander Konovalov (alexknvl)
Affected Versions: 2.12.1

@scabug scabug added the quickfix label Apr 7, 2017

@adriaanm adriaanm removed the quickfix label Apr 7, 2017

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