Harden copmpareHkApply for ill-typed programs

Turn assertion into test. Without this, neg/tcpoly_overloaded.scala fails.

1 files changed, 25 insertions, 0 deletions

diff --git a/tests/pos/tcpoly_overloaded.scala b/tests/pos/tcpoly_overloaded.scala
new file mode 100644
index 000000000..573eaadcb
--- /dev/null
+++ b/tests/pos/tcpoly_overloaded.scala
@@ -0,0 +1,25 @@
+trait Monad[T <: Bound[T], MyType[x <: Bound[x]], Bound[_]] {
+  def flatMap[S <: RBound[S], RContainer[x <: RBound[x]], RBound[_],
+              Result[x <: RBound[x]] <: Monad[x, RContainer, RBound]]
+              (f: T => Result[S]): Result[S]
+  def flatMap[S <: RBound[S], RContainer[x <: RBound[x]], RBound[_],
+              Result[x <: RBound[x]] <: Monad[x, RContainer, RBound]]
+              (f: T => Result[S], foo: String): Result[S]
+  def flatMap[S <: Bound[S]]
+              (f: T => MyType[S], foo: Int): MyType[S]
+}
+
+trait Test {
+  def moo: MList[Int]
+  class MList[T](el: T) extends Monad[T, List, [X] -> Any] {
+    def flatMap[S <: RBound[S], RContainer[x <: RBound[x]], RBound[_],
+            Result[x <: RBound[x]] <: Monad[x, RContainer, RBound]]
+            (f: T => Result[S]): Result[S] = sys.error("foo")
+    def flatMap[S <: RBound[S], RContainer[x <: RBound[x]], RBound[_],
+            Result[x <: RBound[x]] <: Monad[x, RContainer, RBound]]
+            (f: T => Result[S], foo: String): Result[S]  = sys.error("foo")
+    def flatMap[S]
+            (f: T => List[S], foo: Int): List[S]  = sys.error("foo")
+  }
+  val l: MList[String] = moo.flatMap[String, List, [X] -> Any, MList]((x: Int) => new MList("String"))
+}