X-Git-Url: http://git.megacz.com/?a=blobdiff_plain;ds=sidebyside;f=Foreign%2FPtr.hs;h=8dd220f7699e1b3e53c4fd2c5c75d8e26a271bc7;hb=267f4516994e20eec23203214079102edc3a3262;hp=7ada44cdbfd0670719e6f64eb2705d7af4d28e22;hpb=8afc9fecd586d3c4f7ef9c69fb1686a79e5f441d;p=ghc-base.git

diff --git a/Foreign/Ptr.hs b/Foreign/Ptr.hs
index 7ada44c..8dd220f 100644
--- a/Foreign/Ptr.hs
+++ b/Foreign/Ptr.hs
@@ -105,12 +105,14 @@ foreign import ccall unsafe "freeHaskellFunctionPtr"
 
 # ifdef __GLASGOW_HASKELL__
 -- | An unsigned integral type that can be losslessly converted to and from
--- @Ptr@.
+-- @Ptr@. This type is also compatible with the C99 type @uintptr_t@, and
+-- can be marshalled to and from that type safely.
 INTEGRAL_TYPE(WordPtr,tyConWordPtr,"WordPtr",Word)
         -- Word and Int are guaranteed pointer-sized in GHC
 
 -- | A signed integral type that can be losslessly converted to and from
--- @Ptr@.
+-- @Ptr@.  This type is also compatible with the C99 type @intptr_t@, and
+-- can be marshalled to and from that type safely.
 INTEGRAL_TYPE(IntPtr,tyConIntPtr,"IntPtr",Int)
         -- Word and Int are guaranteed pointer-sized in GHC