Check for 'base' version, not for GHC version.

haskell-opengl · Mar 21, 2018 · c6cd93f · c6cd93f
1 parent ee33c10
commit c6cd93f
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/src/Data/StateVar.hs b/src/Data/StateVar.hs
@@ -238,7 +238,7 @@ instance Storable a => HasUpdate (Ptr a) a a where
 
 instance HasUpdate (IORef a) a a where
   r $~ f  = liftIO $ atomicModifyIORef r $ \a -> (f a,())
-#if __GLASGOW_HASKELL__ >= 706
+#if MIN_VERSION_base(4,6,0)
   r $~! f = liftIO $ atomicModifyIORef' r $ \a -> (f a,())
 #else
   r $~! f = liftIO $ do