1 files changed, 33 insertions, 0 deletions
diff --git a/tests/run/case-class-23.scala b/tests/run/case-class-23.scala
new file mode 100644
index 000000000..a6d78763c
--- /dev/null
+++ b/tests/run/case-class-23.scala
@@ -0,0 +1,33 @@
+case class TwentyThree(
+  _1: Int,
+  _2: Int,
+  _3: Int,
+  _4: Int,
+  _5: Int,
+  _6: Int,
+  _7: Int,
+  _8: Int,
+  _9: Int,
+  _10: Int,
+  _11: Int,
+  _12: Int,
+  _13: Int,
+  _14: Int,
+  _15: Int,
+  _16: Int,
+  _17: Int,
+  _18: Int,
+  _19: Int,
+  _20: Int,
+  _21: Int,
+  _22: Int,
+  _23: Int
+)
+
+object Test extends dotty.runtime.LegacyApp {
+  val x = new TwentyThree(1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23)
+  println(x._23)
+  assert(x.copy(_1 = 1) == x)
+  val TwentyThree(a, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, b) = x
+  println((a, b))
+}