1 files changed, 15 insertions, 0 deletions
diff --git a/testsuite/tests/deSugar/should_compile/T14547.hs b/testsuite/tests/deSugar/should_compile/T14547.hs
new file mode 100644
index 0000000000..02ff2e618c
--- /dev/null
+++ b/testsuite/tests/deSugar/should_compile/T14547.hs
@@ -0,0 +1,15 @@
+{-# LANGUAGE OverloadedLists #-}
+{-# LANGUAGE TypeFamilies #-}
+
+module T14547 where
+
+class Foo f where
+        type It f
+        foo :: [It f] -> f
+
+data List a = Empty | a :! List a deriving Show
+
+instance Foo (List a) where
+        type It (List a) = a
+        foo [] = Empty
+        foo (x : xs) = x :! foo xs