Add test for Trac #4302

testsuite/tests/ghc-regress/deriving/should_compile/T4302.hs

+{-# LANGUAGE StandaloneDeriving, DeriveDataTypeable, DeriveFunctor, DeriveFoldable, DeriveTraversable, EmptyDataDecls #-}  
+module T4302 where  
+
+import Ix
+import Data.Typeable
+import Data.Data
+import Data.Foldable
+import Data.Traversable
+
+data Test a
+
+deriving instance Eq (Test a) 
+deriving instance Ord (Test a) 
+deriving instance Typeable1 Test
+deriving instance Data a => Data (Test a) 
+deriving instance Functor Test 
+deriving instance Foldable Test 
+deriving instance Traversable Test  

testsuite/tests/ghc-regress/deriving/should_compile/all.T

@@ -22,6 +22,7 @@ test('T3057', if_compiler_lt('ghc', '6.11', expect_fail), compile, [''])
 test('T3012', normal, compile, [''])
 test('T3965', normal, compile, [''])
 test('T4220', normal, compile, [''])
+test('T4302', normal, compile, [''])
 
 test('drv-functor1',
      if_compiler_lt('ghc', '6.11', expect_fail),