diff -uwr regex-tdfa-1.1.8-orig/Text/Regex/TDFA/NewDFA/Engine_FA.hs regex-tdfa-1.1.8-patched/Text/Regex/TDFA/NewDFA/Engine_FA.hs
--- regex-tdfa-1.1.8-orig/Text/Regex/TDFA/NewDFA/Engine_FA.hs	2011-03-12 00:46:39.000000000 +0100
+++ regex-tdfa-1.1.8-patched/Text/Regex/TDFA/NewDFA/Engine_FA.hs	2013-12-19 12:42:27.048813869 +0100
@@ -1,3 +1,4 @@
+{-# LANGUAGE CPP #-}
 -- | This is the code for the main engine.  This captures the posix
 -- subexpressions.  There is also a non-capturing engine, and a
 -- testing engine.
@@ -20,7 +21,12 @@
 
 import Prelude hiding ((!!))
 import Control.Monad(when,unless,forM,forM_,liftM2,foldM)
+#if MIN_VERSION_array(0,4,0)
+import Data.Array.MArray(MArray(..))
+import Data.Array.Unsafe(unsafeFreeze)
+#else
 import Data.Array.MArray(MArray(..),unsafeFreeze)
+#endif
 import Data.Array.IArray(Array,bounds,assocs,Ix(range))
 import qualified Data.IntMap.CharMap2 as CMap(findWithDefault)
 import Data.IntMap(IntMap)
@@ -574,7 +580,7 @@
     case unsafeCoerce# memcpy mdest msource n# s1# of { (# s2#, () #) ->
     (# s2#, () #) }}
 {-
-#else /* !__GLASGOW_HASKELL__ */
+-- #else /* !__GLASGOW_HASKELL__ */
 
 copySTU :: (MArray (STUArray s) e (S.ST s))=> STUArray s Tag e -> STUArray s Tag e -> S.ST s (STUArray s i e)
 copySTU source destination = do
@@ -585,5 +591,5 @@
   forM_ (range b) $ \index ->
     set destination index =<< source !! index
   return destination
-#endif /* !__GLASGOW_HASKELL__ */
+-- #endif /* !__GLASGOW_HASKELL__ */
 -}
diff -uwr regex-tdfa-1.1.8-orig/Text/Regex/TDFA/NewDFA/Engine.hs regex-tdfa-1.1.8-patched/Text/Regex/TDFA/NewDFA/Engine.hs
--- regex-tdfa-1.1.8-orig/Text/Regex/TDFA/NewDFA/Engine.hs	2011-03-12 00:46:39.000000000 +0100
+++ regex-tdfa-1.1.8-patched/Text/Regex/TDFA/NewDFA/Engine.hs	2013-12-19 12:42:27.049813918 +0100
@@ -1,3 +1,4 @@
+{-# LANGUAGE CPP #-}
 -- | This is the code for the main engine.  This captures the posix subexpressions. This 'execMatch'
 -- also dispatches to "Engine_NC", "Engine_FA", and "Engine_FC_NA"
 -- 
@@ -19,7 +20,12 @@
 -}
 import Prelude hiding ((!!))
 
+#if MIN_VERSION_array(0,4,0)
+import Data.Array.MArray(MArray(..))
+import Data.Array.Unsafe(unsafeFreeze)
+#else
 import Data.Array.MArray(MArray(..),unsafeFreeze)
+#endif
 import Data.Array.IArray(Array,bounds,assocs,Ix(rangeSize,range))
 import qualified Data.IntMap.CharMap2 as CMap(findWithDefault)
 import Data.IntMap(IntMap)
@@ -716,7 +722,7 @@
     case unsafeCoerce# memcpy mdest msource n# s1# of { (# s2#, () #) ->
     (# s2#, () #) }}
 {-
-#else /* !__GLASGOW_HASKELL__ */
+-- #else /* !__GLASGOW_HASKELL__ */
 
 copySTU :: (MArray (STUArray s) e (S.ST s))=> STUArray s Tag e -> STUArray s Tag e -> S.ST s (STUArray s i e)
 copySTU source destination = do
@@ -727,5 +733,5 @@
   forM_ (range b) $ \index ->
     set destination index =<< source !! index
   return destination
-#endif /* !__GLASGOW_HASKELL__ */
+-- #endif /* !__GLASGOW_HASKELL__ */
 -}
diff -uwr regex-tdfa-1.1.8-orig/Text/Regex/TDFA/NewDFA/Engine_NC_FA.hs regex-tdfa-1.1.8-patched/Text/Regex/TDFA/NewDFA/Engine_NC_FA.hs
--- regex-tdfa-1.1.8-orig/Text/Regex/TDFA/NewDFA/Engine_NC_FA.hs	2011-03-12 00:46:39.000000000 +0100
+++ regex-tdfa-1.1.8-patched/Text/Regex/TDFA/NewDFA/Engine_NC_FA.hs	2013-12-19 12:42:27.048813869 +0100
@@ -1,10 +1,16 @@
+{-# LANGUAGE CPP #-}
 -- | This is the non-capturing form of Text.Regex.TDFA.NewDFA.String
 module Text.Regex.TDFA.NewDFA.Engine_NC_FA(execMatch) where
 
 import Control.Monad(unless)
 import Prelude hiding ((!!))
 
+#if MIN_VERSION_array(0,4,0)
+import Data.Array.MArray(MArray(newArray))
+import Data.Array.Unsafe(unsafeFreeze)
+#else
 import Data.Array.MArray(MArray(newArray),unsafeFreeze)
+#endif
 import Data.Array.ST(STArray)
 import qualified Data.IntMap.CharMap2 as CMap(findWithDefault)
 import qualified Data.IntMap as IMap(null)
diff -uwr regex-tdfa-1.1.8-orig/Text/Regex/TDFA/NewDFA/Engine_NC.hs regex-tdfa-1.1.8-patched/Text/Regex/TDFA/NewDFA/Engine_NC.hs
--- regex-tdfa-1.1.8-orig/Text/Regex/TDFA/NewDFA/Engine_NC.hs	2011-03-12 00:46:39.000000000 +0100
+++ regex-tdfa-1.1.8-patched/Text/Regex/TDFA/NewDFA/Engine_NC.hs	2013-12-19 12:42:27.048813869 +0100
@@ -1,3 +1,4 @@
+{-# LANGUAGE CPP #-}
 -- | This is the non-capturing form of Text.Regex.TDFA.NewDFA.String
 module Text.Regex.TDFA.NewDFA.Engine_NC(execMatch) where
 
@@ -5,7 +6,12 @@
 import Data.Array.Base(unsafeRead,unsafeWrite)
 import Prelude hiding ((!!))
 
+#if MIN_VERSION_array(0,4,0)
+import Data.Array.MArray(MArray(..))
+import Data.Array.Unsafe(unsafeFreeze)
+#else
 import Data.Array.MArray(MArray(..),unsafeFreeze)
+#endif
 import Data.Array.IArray(Ix)
 import Data.Array.ST(STArray,STUArray)
 import qualified Data.IntMap.CharMap2 as CMap(findWithDefault)
@@ -248,4 +254,3 @@
 wsToGroup (WScratch start stop) = do
   ma <- newArray (0,0) (start,stop-start)  :: S.ST s (STArray s Int (MatchOffset,MatchLength))
   unsafeFreeze ma
-