[GHC] #9238: Negative zero broken

[GHC]

#9238: Negative zero broken
-------------------------------------+-------------------------------------
              Reporter:  augustss    |            Owner:
                  Type:  bug         |           Status:  new
              Priority:  normal      |        Milestone:  7.8.4
             Component:  Compiler    |          Version:  7.8.2
            Resolution:              |         Keywords:
      Operating System:              |     Architecture:  Unknown/Multiple
  Unknown/Multiple                   |       Difficulty:  Unknown
       Type of failure:  Incorrect   |       Blocked By:
  result at runtime                  |  Related Tickets:  #7858, #9451
             Test Case:              |
              Blocking:              |
Differential Revisions:              |
-------------------------------------+-------------------------------------
Changes (by rwbarton):

 * related:  #7858 => #7858, #9451
 * milestone:   => 7.8.4


Comment:

 And #9451.

 Ideally we would fix this for 7.8.4 since it is a regression from 7.6.3.

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/9238#comment:8>
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