diff options
Diffstat (limited to 'libraries/base/GHC/Ptr.hs')
| -rw-r--r-- | libraries/base/GHC/Ptr.hs | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/libraries/base/GHC/Ptr.hs b/libraries/base/GHC/Ptr.hs index 93f6d64ae5..f7caf164af 100644 --- a/libraries/base/GHC/Ptr.hs +++ b/libraries/base/GHC/Ptr.hs @@ -42,7 +42,10 @@ import Numeric ( showHex ) -- redundant role annotation checks that this doesn't change type role Ptr phantom -data Ptr a = Ptr Addr# deriving (Eq, Ord) +data Ptr a = Ptr Addr# + deriving ( Eq -- ^ @since 2.01 + , Ord -- ^ @since 2.01 + ) -- ^ A value of type @'Ptr' a@ represents a pointer to an object, or an -- array of objects, which may be marshalled to or from Haskell values -- of type @a@. |