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Diffstat (limited to 'libraries/base/Data/Data.hs')
| -rw-r--r-- | libraries/base/Data/Data.hs | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/libraries/base/Data/Data.hs b/libraries/base/Data/Data.hs index 4ef7d00d03..b6102d4cf3 100644 --- a/libraries/base/Data/Data.hs +++ b/libraries/base/Data/Data.hs @@ -1187,6 +1187,9 @@ deriving instance Data Ordering -- | @since 4.0.0.0 deriving instance (Data a, Data b) => Data (Either a b) +-- | @since 4.8.0.0 +deriving instance Data Void + -- | @since 4.0.0.0 deriving instance Data () |