X-Git-Url: http://git.megacz.com/?a=blobdiff_plain;f=Foreign%2FPtr.hs;h=26dda5c23763fab24ae43e57b127a23b810da6ee;hb=7dbb606d7b57cdad87a0ffbdb6ea4a274ebca7c0;hp=b46acc1bea1d9f2602230fdc3753912ed762e344;hpb=41e8fba828acbae1751628af50849f5352b27873;p=ghc-base.git

diff --git a/Foreign/Ptr.hs b/Foreign/Ptr.hs
index b46acc1..26dda5c 100644
--- a/Foreign/Ptr.hs
+++ b/Foreign/Ptr.hs
@@ -4,6 +4,9 @@
            , MagicHash
            , GeneralizedNewtypeDeriving
   #-}
+#ifdef __GLASGOW_HASKELL__
+{-# LANGUAGE DeriveDataTypeable, StandaloneDeriving #-}
+#endif
 
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