2 files changed, 20 insertions, 0 deletions
diff --git a/testsuite/tests/deriving/should_compile/T11416.hs b/testsuite/tests/deriving/should_compile/T11416.hs
new file mode 100644
index 0000000000..4696306107
--- /dev/null
+++ b/testsuite/tests/deriving/should_compile/T11416.hs
@@ -0,0 +1,19 @@
+{-# LANGUAGE DeriveFunctor #-}
+{-# LANGUAGE TypeFamilies #-}
+{-# LANGUAGE TypeInType #-}
+module T11416 where
+
+import Data.Kind
+
+type ConstantT a b = a
+
+newtype T f (a :: ConstantT * f) = T (f a)
+  deriving Functor
+
+data family TFam1 (f :: k1) (a :: k2)
+newtype instance TFam1 f (ConstantT a f) = TFam1 (f a)
+  deriving Functor
+
+data family TFam2 (f :: k1) (a :: k2)
+newtype instance TFam2 f (a :: ConstantT * f) = TFam2 (f a)
+  deriving Functor
diff --git a/testsuite/tests/deriving/should_compile/all.T b/testsuite/tests/deriving/should_compile/all.T
index ff26d37d0a..a18a257ff2 100644
--- a/testsuite/tests/deriving/should_compile/all.T
+++ b/testsuite/tests/deriving/should_compile/all.T
@@ -61,3 +61,4 @@ test('T10524', normal, compile, [''])
 test('T11148', normal, run_command,
      ['$MAKE -s --no-print-directory T11148'])
 test('T9968', normal, compile, [''])
+test('T11416', normal, compile, [''])