diff options
Diffstat (limited to 'test/files/neg/unchecked-refinement.scala')
-rw-r--r-- | test/files/neg/unchecked-refinement.scala | 27 |
1 files changed, 27 insertions, 0 deletions
diff --git a/test/files/neg/unchecked-refinement.scala b/test/files/neg/unchecked-refinement.scala new file mode 100644 index 0000000000..79ed7f13c1 --- /dev/null +++ b/test/files/neg/unchecked-refinement.scala @@ -0,0 +1,27 @@ +// a.scala +// Thu Sep 27 09:42:16 PDT 2012 + +trait Bar[-T1, T2, +T3] { } +trait Foo[-T1, T2, +T3] extends Bar[T1, T2, T3] + +class A { + var b = true + + def f1(x: Foo[Int, Int, Int]) = x match { + /* nowarn */ case _: Foo[Nothing, Int, Any] => true + } + def f2[T, U, V](x: Foo[T, U, V]) = x match { + /* nowarn */ case _: Foo[Nothing, U, Any] => true + } + def f3[T, U, V](x: Foo[T, U, V]) = x match { + /* warn */ case _: Foo[U, U, V] if b => () + /* nowarn */ case _: Foo[Nothing, U, V] if b => () + /* warn */ case _: Foo[Any, U, V] if b => () + } + + def f4(xs: List[Int]) = xs match { + /* nowarn - todo */ case x: AnyRef { def bippy: Int } if b => x.bippy // this could/should do an instance check and not warn + /* nowarn - todo */ case x: AnyRef { def size: Int } if b => x.size // this could/should do a static conformance test and not warn + /* nowarn */ case x: ((AnyRef { def size: Int }) @unchecked) if b => x.size + } +} |