Test Trac #8499

testsuite/tests/th/T8499.hs

+{-# LANGUAGE TemplateHaskell, PolyKinds, DataKinds #-}
+{-# OPTIONS_GHC -Wall #-}
+
+module T8499 where
+
+import Language.Haskell.TH
+
+$( do TyConI (DataD _ _ [PlainTV tvb_a] _ _) <- reify ''Maybe
+      my_a <- newName "a"
+      return [TySynD (mkName "SMaybe")
+                     [KindedTV my_a (AppT (ConT ''Maybe) (VarT tvb_a))]
+                     (TupleT 0)] )

testsuite/tests/th/all.T

@@ -302,4 +302,5 @@ test('T4364', normal, compile, ['-v0'])
 test('T8412', normal, compile_fail, ['-v0'])
 test('T7667', normal, compile, ['-v0'])
 test('T7667a', normal, compile_fail, ['-v0'])
-test('T8455', normal, compile, ['-v0'])
\ No newline at end of file
+test('T8455', normal, compile, ['-v0'])
+test('T8499', normal, compile, ['-v0'])