Herbert Valerio Riedel authored 10 years ago and Mateusz Kowalczyk committed 10 years ago

This is needed to keep the compilation warning free (and thus pass GHC's
./validate) regardless of whether Word is re-exported from Prelude or not

See https://ghc.haskell.org/trac/ghc/ticket/9531 for more details

There seems to be memory and speed improvement.