check for ClosedHandle in read/write operations on DuplexHandles (#4808)

[ghc-base.git] / GHC / ForeignPtr.hs

diff --git a/GHC/ForeignPtr.hs b/GHC/ForeignPtr.hs
index 0d22e4e..a20b000 100644 (file)
--- a/GHC/ForeignPtr.hs
+++ b/GHC/ForeignPtr.hs
@@ -1,3 +1,4 @@
+{-# LANGUAGE BangPatterns #-}
 {-# OPTIONS_GHC -XNoImplicitPrelude #-}
 {-# OPTIONS_HADDOCK hide #-}
 -----------------------------------------------------------------------------
@@ -46,7 +47,6 @@ import GHC.IORef
 import GHC.STRef        ( STRef(..) )
 import GHC.Ptr          ( Ptr(..), FunPtr(..) )
 import GHC.Err
-import GHC.Num          ( fromInteger )
 
 #include "Typeable.h"