Test case closes SI-4568.

What's the opposite of regression? Progression!

1 files changed, 13 insertions, 0 deletions

diff --git a/test/files/neg/t4568.scala b/test/files/neg/t4568.scala
new file mode 100644
index 0000000000..8067759262
--- /dev/null
+++ b/test/files/neg/t4568.scala
@@ -0,0 +1,13 @@
+object SubList {
+  implicit def sublistable[A](x: List[A]) = new SubListable(x)
+
+  class SubListable[A](x: List[A]) {
+    def isSubListOf(y: List[A]) = {
+      x match {
+        case Nil => true
+        case h :: t => y.contains(h) && (t.isSubListOf(y.drop(y.indexOf(h) + 1)))
+      }
+    }
+  }
+
+}
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