X-Git-Url: http://git.megacz.com/?a=blobdiff_plain;f=Control%2FMonad%2FST.hs;h=0e3485725e40d34c4a1f141a7ee0686d535d3c27;hb=3e23aaae1a1f07fd28f1092d0f79e13d66b72f09;hp=be57243698f45450dd0fd1f87145173a8d4ca1c1;hpb=19de173b1bd4fa8cf1854cfefa619565910137f3;p=ghc-base.git

diff --git a/Control/Monad/ST.hs b/Control/Monad/ST.hs
index be57243..0e34857 100644
--- a/Control/Monad/ST.hs
+++ b/Control/Monad/ST.hs
@@ -33,14 +33,17 @@ module Control.Monad.ST
 import Prelude
 
 import Control.Monad.Fix
-import Data.Typeable
 
 #include "Typeable.h"
 
 #ifdef __HUGS__
+import Data.Typeable
 import Hugs.ST
 import qualified Hugs.LazyST as LazyST
 
+INSTANCE_TYPEABLE2(ST,sTTc,"ST")
+INSTANCE_TYPEABLE0(RealWorld,realWorldTc,"RealWorld")
+
 fixST :: (a -> ST s a) -> ST s a
 fixST f = LazyST.lazyToStrictST (LazyST.fixST (LazyST.strictToLazyST . f))
 
@@ -58,7 +61,3 @@ import GHC.IOBase 	( stToIO, unsafeIOToST )
 instance MonadFix (ST s) where
 	mfix = fixST
 
--- ---------------------------------------------------------------------------
--- Typeable instance
-
-INSTANCE_TYPEABLE2(ST,sTTc,"ST")