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Fix #6662: Add regression test #7945

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Merged
merged 1 commit into from
Jan 9, 2020
Merged

Fix #6662: Add regression test #7945

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15 changes: 15 additions & 0 deletions tests/neg/i6662.scala
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Original file line number Diff line number Diff line change
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opaque type Opt[A >: Null] = A

inline def (x: Opt[A]) nonEmpty[A >: Null]: Boolean = x.get != null // error: Implementation restriction
inline def (x: Opt[A]) isEmpty[A >: Null]: Boolean = x.get == null // error: Implementation restriction
inline def (x: Opt[A]) isDefined[A >: Null]: Boolean = x.nonEmpty // error: Implementation restriction
inline def (x: Opt[A]) get[A >: Null]: A = Opt.unOpt(x) // error: Implementation restriction

object Opt
{
inline def unOpt[A >: Null](x: Opt[A]): A = x // error: Implementation restriction
inline def apply[A >: Null](x: A): Opt[A] = x // error: Implementation restriction
inline def some[A >: Null](x: A): Opt[A] = x // error: Implementation restriction
inline def none[A >: Null]: Opt[A] = null // error: Implementation restriction
inline def fromOption[A >: Null](x: Option[A]) = x.orNull // error: Implementation restriction
}