compiler bug?pic.twitter.com/P8dehnwcx1
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There's nothing which says that a (non-specialized) type param has to be :> Null, because there's also nothing which requires that that type param is used as the type of a value. It could just be used to resolve an implicit or as a bound.
A type, Int with AnyRef, would have all the properties of http://scala.Int and all the properties of AnyRef, if it were to exist (which it can't) but that doesn't stop the type existing, for example as the GLB of Int and AnyRef.
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AnyRef with Nothing is just Nothing, because *everything* is a supertype of Nothing, so Nothing subsumes the type AnyRef (and AnyVal and Null).
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