X-Git-Url: http://git.megacz.com/?a=blobdiff_plain;f=Foreign.hs;h=a26ffaf2bd401a5709622826252ee49a1d35c87a;hb=f98950484a7cb01e43352e3d88277a2784cd58bf;hp=6c3cf8a1c5a80a1c5439a29ffc65dd8719a62036;hpb=c04ece9b00ebbf0a7448033e0da6c1cbadc34a00;p=ghc-base.git

diff --git a/Foreign.hs b/Foreign.hs
index 6c3cf8a..a26ffaf 100644
--- a/Foreign.hs
+++ b/Foreign.hs
@@ -1,4 +1,5 @@
-{-# OPTIONS_GHC -fno-implicit-prelude #-}
+{-# LANGUAGE NoImplicitPrelude #-}
+
 -----------------------------------------------------------------------------
 -- |
 -- Module      :  Foreign
@@ -24,8 +25,10 @@ module Foreign
         , module Foreign.Storable
         , module Foreign.Marshal
 
-        -- | For compatibility with the FFI addendum only.  The recommended
-        -- place to get this from is "System.IO.Unsafe".
+        -- | 'unsafePerformIO' is exported here for backwards
+        -- compatibility reasons only.  For doing local marshalling in
+        -- the FFI, use 'unsafeLocalState'.  For other uses, see
+        -- 'System.IO.Unsafe.unsafePerformIO'.
         , unsafePerformIO
         ) where