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Diffstat (limited to 'tests/neg/t3683-modified.scala')
-rw-r--r-- | tests/neg/t3683-modified.scala | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/tests/neg/t3683-modified.scala b/tests/neg/t3683-modified.scala new file mode 100644 index 000000000..19b981e0a --- /dev/null +++ b/tests/neg/t3683-modified.scala @@ -0,0 +1,20 @@ +sealed trait Foo +sealed trait Bar extends Foo +sealed trait W[T >: Bar <: Foo] +case class X() extends W[Foo] +case class XX() extends W[Bar] +case class Y() extends W[Bar] +case class Z[T >: T <: Foo]( // error: cyclic reference + z1: W[T] +) extends W[T] + +object Main { + // should warn for not including XX() + def f1(w: W[Bar]): Int = { + w match { + // case XX() => 2 + case Y() => 1 + case Z(z) => f1(z) + } + } +} |