\begin{code}
-{-# LANGUAGE BangPatterns #-}
-{-# OPTIONS_GHC -XNoImplicitPrelude #-}
+{-# LANGUAGE CPP
+ , NoImplicitPrelude
+ , BangPatterns
+ , MagicHash
+ , UnboxedTuples
+ , UnliftedFFITypes
+ , ForeignFunctionInterface
+ , DeriveDataTypeable
+ #-}
{-# OPTIONS_GHC -fno-warn-missing-signatures #-}
{-# OPTIONS_HADDOCK not-home #-}
+
-----------------------------------------------------------------------------
-- |
-- Module : GHC.Conc.Sync