Add tests from testsuite/tests/h98

[ghc-base.git] / GHC / Ptr.lhs

diff --git a/GHC/Ptr.lhs b/GHC/Ptr.lhs
index 7841cf3..bf78f71 100644 (file)
--- a/GHC/Ptr.lhs
+++ b/GHC/Ptr.lhs
@@ -1,6 +1,7 @@
 \begin{code}
-{-# OPTIONS_GHC -XNoImplicitPrelude #-}
+{-# LANGUAGE CPP, NoImplicitPrelude, MagicHash #-}
 {-# OPTIONS_HADDOCK hide #-}
+
 -----------------------------------------------------------------------------
 -- |
 -- Module      :  GHC.Ptr
@@ -79,7 +80,7 @@ data FunPtr a = FunPtr Addr# deriving (Eq, Ord)
 -- a function type with zero or more arguments where
 --
 -- * the argument types are /marshallable foreign types/,
---   i.e. 'Char', 'Int', 'Prelude.Double', 'Prelude.Float',
+--   i.e. 'Char', 'Int', 'Double', 'Float',
 --   'Bool', 'Data.Int.Int8', 'Data.Int.Int16', 'Data.Int.Int32',
 --   'Data.Int.Int64', 'Data.Word.Word8', 'Data.Word.Word16',
 --   'Data.Word.Word32', 'Data.Word.Word64', @'Ptr' a@, @'FunPtr' a@,
@@ -87,7 +88,7 @@ data FunPtr a = FunPtr Addr# deriving (Eq, Ord)
 --   using @newtype@.
 -- 
 -- * the return type is either a marshallable foreign type or has the form
---   @'Prelude.IO' t@ where @t@ is a marshallable foreign type or @()@.
+--   @'IO' t@ where @t@ is a marshallable foreign type or @()@.
 --
 -- A value of type @'FunPtr' a@ may be a pointer to a foreign function,
 -- either returned by another foreign function or imported with a
@@ -145,9 +146,7 @@ castPtrToFunPtr (Ptr addr) = FunPtr addr
 
 ------------------------------------------------------------------------
 -- Show instances for Ptr and FunPtr
--- I have absolutely no idea why the WORD_SIZE_IN_BITS stuff is here
 
-#if (WORD_SIZE_IN_BITS == 32 || WORD_SIZE_IN_BITS == 64)
 instance Show (Ptr a) where
    showsPrec _ (Ptr a) rs = pad_out (showHex (wordToInteger(int2Word#(addr2Int# a))) "")
      where
@@ -157,6 +156,5 @@ instance Show (Ptr a) where
 
 instance Show (FunPtr a) where
    showsPrec p = showsPrec p . castFunPtrToPtr
-#endif
 \end{code}