Still giddy with the thrill of fixing #266, I v...

Still giddy with the thrill of fixing #266, I vanquish another pattern
matcher bug from the dawn of time. If you've always wanted to write code
like this:

  class Bob[K[_]] {
    def foo(other: Any) = other match {
      case x: (Bob[X] forSome { type X[_] })  =>
    }
  }

Now is your chance. Closes #1427, review by moors. (Is there a better
way to "shake off" the pattern existential?)

1 files changed, 15 insertions, 0 deletions

diff --git a/test/files/run/bug1427.scala b/test/files/run/bug1427.scala
new file mode 100644
index 0000000000..ab0a42c7b7
--- /dev/null
+++ b/test/files/run/bug1427.scala
@@ -0,0 +1,15 @@
+class Bob[K[_]] {
+  def foo(other: Any) = other match {
+    case x: (Bob[X] forSome { type X[_] })  => true
+    case _                                  => false
+  }
+}
+
+object Test {
+  def main(args: Array[String]): Unit = {
+    val x = new Bob[List]
+    val results = List(x, new Bob[Set], 55) map (x foo _)
+
+    assert(results == List(true, true, false))
+  }
+}