\begin{code}
-{-# OPTIONS_GHC -XNoImplicitPrelude #-}
+{-# LANGUAGE CPP
+ , NoImplicitPrelude
+ , BangPatterns
+ , MagicHash
+ , UnboxedTuples
+ #-}
{-# OPTIONS_HADDOCK hide #-}
+
-----------------------------------------------------------------------------
-- |
-- Module : GHC.Weak