[GHC] #8539: Data.Complex shouldn't use default implementation of (**)

[GHC]

#8539: Data.Complex shouldn't use default implementation of (**)
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              Reporter:              |            Owner:
  jjaredsimpson                      |           Status:  infoneeded
                  Type:  bug         |        Milestone:
              Priority:  low         |          Version:  7.6.3
             Component:  Prelude     |         Keywords:
            Resolution:              |     Architecture:  Unknown/Multiple
      Operating System:              |       Difficulty:  Easy (less than 1
  Unknown/Multiple                   |  hour)
       Type of failure:  Incorrect   |       Blocked By:
  result at runtime                  |  Related Tickets:
             Test Case:              |
              Blocking:              |
Differential Revisions:              |
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Comment (by yalas):

 I agree with Scott Turner, we can leave {{{x**infinity}}} for another day.

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/8539#comment:26>
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