changled handling of gadts

1 files changed, 26 insertions, 0 deletions

diff --git a/test/files/pos/gadts2.scala b/test/files/pos/gadts2.scala
new file mode 100644
index 0000000000..ca905c572a
--- /dev/null
+++ b/test/files/pos/gadts2.scala
@@ -0,0 +1,26 @@
+object Test{
+
+abstract class Number
+case class Int(n: int) extends Number
+case class Double(d: double) extends Number
+
+trait Term[+a]
+case class Cell[a](var x: a) extends Term[a]
+final case class NumTerm(val n: Number) extends Term[Number]
+
+
+def f[a](t:Term[a], c:Cell[a]): unit =
+  t match {
+    case NumTerm(n) => c.x = Double(1.0)
+  }
+
+
+val x:Term[Number] = NumTerm(Int(5))
+
+def main(args: Array[String]): unit = {
+  val cell = Cell[Number](Int(6))
+  Console.println(cell)
+  f[Number](new NumTerm(Int(5)), cell)
+  Console.println(cell)
+}
+}