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unchecked-refinement.scala:17: error: abstract type U in type pattern Foo[U,U,V] is unchecked since it is eliminated by erasure
/* warn */ case _: Foo[U, U, V] if b => ()
^
unchecked-refinement.scala:19: error: non-variable type argument Any in type pattern Foo[Any,U,V] is unchecked since it is eliminated by erasure
/* warn */ case _: Foo[Any, U, V] if b => ()
^
unchecked-refinement.scala:23: error: a pattern match on a refinement type is unchecked
/* nowarn - todo */ case x: AnyRef { def bippy: Int } if b => x.bippy // this could/should do an instance check and not warn
^
unchecked-refinement.scala:24: error: a pattern match on a refinement type is unchecked
/* nowarn - todo */ case x: AnyRef { def size: Int } if b => x.size // this could/should do a static conformance test and not warn
^
four errors found
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