1 files changed, 30 insertions, 0 deletions
diff --git a/test/files/pos/channels.scala b/test/files/pos/channels.scala
new file mode 100644
index 0000000000..6513f3a5f0
--- /dev/null
+++ b/test/files/pos/channels.scala
@@ -0,0 +1,30 @@
+class Channel[a]
+
+import collection.mutable.Set
+
+case class ![a](chan: Channel[a], data: a)
+
+/*
+object Bang {
+  def unapply[a](x: ![a]): Option[{Channel[a], a}] =
+    Some(x.chan, x.data)
+}
+
+*/
+object Test extends Application {
+  object IC extends Channel[int]
+  def f[b](x: ![b]): int = x match {
+    case send: ![c] =>
+      send.chan match {
+        case IC => send.data
+      }
+  }
+}
+
+object Test2 extends Application {
+  object IC extends Channel[Set[int]]
+  def f[b](s: ![b]): Set[int] = s match {
+    case IC ! x => x
+  }
+}
+