2 files changed, 9 insertions, 0 deletions
diff --git a/test/files/pos/t6664.scala b/test/files/pos/t6664.scala
new file mode 100644
index 0000000000..7eb85f619d
--- /dev/null
+++ b/test/files/pos/t6664.scala
@@ -0,0 +1,4 @@
+final case class A(i: Int, s: String) {
+    protected def copy(s2: String): A = A(i, s2)
+    protected def copy(i2: Int): A = A(i2, s)
+}
diff --git a/test/files/pos/t6664b.scala b/test/files/pos/t6664b.scala
new file mode 100644
index 0000000000..a622866838
--- /dev/null
+++ b/test/files/pos/t6664b.scala
@@ -0,0 +1,5 @@
+object T {
+  def A(s: String): A = new A(3, s)
+  def A(i: Int): A = A(i, "abc")
+  case class A(i: Int, s: String)
+}