For GHC, implement the Typeable.hs macros using standalone deriving

[ghc-base.git] / Control / Exception / Base.hs

diff --git a/Control/Exception/Base.hs b/Control/Exception/Base.hs
index cb5321b..a5d72ce 100644 (file)
--- a/Control/Exception/Base.hs
+++ b/Control/Exception/Base.hs
@@ -1,4 +1,7 @@
 {-# LANGUAGE CPP, NoImplicitPrelude, MagicHash #-}
+#ifdef __GLASGOW_HASKELL__
+{-# LANGUAGE DeriveDataTypeable, StandaloneDeriving #-}
+#endif
 
 #include "Typeable.h"