1 files changed, 11 insertions, 0 deletions
diff --git a/tests/untried/neg/t4137.scala b/tests/untried/neg/t4137.scala
new file mode 100644
index 000000000..60de6de70
--- /dev/null
+++ b/tests/untried/neg/t4137.scala
@@ -0,0 +1,11 @@
+trait C[T]
+
+trait A[T] {
+  type EPC[X1] = C[X1]
+  type EPC2[X1] = C[X1]
+}
+
+trait B[T] extends A[T] {
+  override type EPC = C[T]
+  override type EPC2[X1 <: String] = C[X1]
+}