Hi GHC devs,

While compiling the primitive package using ghc head I ran into the following error:

Data/Primitive/Types.hs:265:870: error:
    • Couldn't match type ‘Word64#’ with ‘Word#’
      Expected: Word64_#
        Actual: Word64#
    • In the fourth argument of ‘setWord64Array#’, namely ‘x#’
      In the first argument of ‘internal’, namely
        ‘(setWord64Array# arr# i n x#)’
      In the first argument of ‘unsafeCoerce#’, namely
        ‘(internal (setWord64Array# arr# i n x#))’
    |
265 | derivePrim(Word64, W64#, sIZEOF_WORD64, aLIGNMENT_WORD64,
    |                                                                                                                                                                                         

Any idea what this is and how it can be fixed?

-harendra