1 files changed, 9 insertions, 0 deletions
diff --git a/tests/untried/neg-with-implicits/t550.scala b/tests/untried/neg-with-implicits/t550.scala
new file mode 100644
index 000000000..5212a2658
--- /dev/null
+++ b/tests/untried/neg-with-implicits/t550.scala
@@ -0,0 +1,9 @@
+abstract class Monoid[a] {
+  def unit: a
+}
+
+object test {
+  def sum[a](xs: List)(implicit m: Monoid[a]): a =
+    if (xs.isEmpty) m.unit else xs.head
+  sum(List(1,2,3))
+}