1 files changed, 6 insertions, 0 deletions
diff --git a/tests/pos/i1757.scala b/tests/pos/i1757.scala
new file mode 100644
index 000000000..515b4e9bb
--- /dev/null
+++ b/tests/pos/i1757.scala
@@ -0,0 +1,6 @@
+case class B[T](b: List[Int]) {
+  var s: B[Int] = ???
+  def cpy[X](b: List[Int] = b): B[X] = new B[X](b)
+  s.cpy()
+  s.copy()
+}