1 files changed, 30 insertions, 0 deletions
diff --git a/test/files/pos/t5294c.scala b/test/files/pos/t5294c.scala
new file mode 100644
index 0000000000..2709098988
--- /dev/null
+++ b/test/files/pos/t5294c.scala
@@ -0,0 +1,30 @@
+sealed trait Nat {
+  type IsZero[U, A <: U, B <: U] <: U
+}
+
+final object Zero extends Nat {
+  type IsZero[U, T <: U, F <: U] = T
+}
+
+final class Succ[N <: Nat] extends Nat {
+  type IsZero[U, T <: U, F <: U] = F
+}
+
+trait HList {
+  type Head
+  type Tail <: HList
+  type Drop[N <: Nat] = N#IsZero[HList, this.type, Tail]
+  type Apply[N <: Nat] = Drop[N]#Head // typechecks as HList.this.Head
+}
+
+object Test {
+  type ::[H, T <: HList] = HList { type Head = H; type Tail = T}
+  type HNil <: HList
+  type T = Int :: String :: HNil
+
+  type U = T#Drop[Succ[Zero.type]]#Head
+  type V = T#Apply[Succ[Zero.type]]
+  var u: U = ???
+  var v: V = ???
+  u = v
+}