+
+catchIO :: IO a -> (Exception.IOException -> IO a) -> IO a
+#if __GLASGOW_HASKELL__ >= 609
+catchIO = Exception.catch
+#else
+catchIO io handler = io `Exception.catch` handler'
+ where handler' (Exception.IOException ioe) = handler ioe
+ handler' e = Exception.throw e
+#endif
+
+catchError :: IO a -> (String -> IO a) -> IO a
+#if __GLASGOW_HASKELL__ >= 609
+catchError io handler = io `Exception.catch` handler'
+ where handler' (Exception.ErrorCall err) = handler err
+#else
+catchError io handler = io `Exception.catch` handler'
+ where handler' (Exception.ErrorCall err) = handler err
+ handler' e = Exception.throw e
+#endif
+
+onException :: IO a -> IO () -> IO a
+#if __GLASGOW_HASKELL__ >= 609
+onException = Exception.onException
+#else
+onException io what = io `Exception.catch` \e -> do what
+ Exception.throw e
+#endif
+