[GHC] #8274: Core pretty-printer doesn't print # on unboxed literals

12 Sep 2013

      #8274: Core pretty-printer doesn't print # on unboxed literals
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       Reporter:  jstolarek         |             Owner:
           Type:  bug               |            Status:  new
       Priority:  normal            |         Milestone:
      Component:  Compiler          |           Version:  7.7
       Keywords:                    |  Operating System:  Unknown/Multiple
   Architecture:  Unknown/Multiple  |   Type of failure:  Other
     Difficulty:  Unknown           |         Test Case:
     Blocked By:                    |          Blocking:
Related Tickets:                    |
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 I just noticed that Core pretty printer produces something like this (this
 is part of expected output for T3772 in testsuite):

 {{{
     case GHC.Prim.<=# n# 0 of _ {
       __DEFAULT -> xs n#;
       1 -> GHC.Tuple.()
     }
 }}}

 Both `0` (in scrutinee) and `1` (one of branch alternatives) are unboxed
 values, so they should be printed as `0#` and `1#` respectively. I haven't
 checked whether unboxed literals of other types (`Word`, `Double`,
 `Float`) are printed in that way, but I would guess that yes.

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Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/8274
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