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add ArrowChoice=>GArrowSum instance
[ghc-base.git]
/
Control
/
OldException.hs
diff --git
a/Control/OldException.hs
b/Control/OldException.hs
index
0284899
..
6442d67
100644
(file)
--- a/
Control/OldException.hs
+++ b/
Control/OldException.hs
@@
-3,6
+3,9
@@
, ForeignFunctionInterface
, ExistentialQuantification
#-}
+#ifdef __GLASGOW_HASKELL__
+{-# LANGUAGE DeriveDataTypeable, StandaloneDeriving #-}
+#endif
#include "Typeable.h"