[GHC] #12531: Holes should be representation-polymorphic

[GHC]

#12531: Holes should be representation-polymorphic
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        Reporter:  mniip             |                Owner:
            Type:  feature request   |               Status:  merge
        Priority:  normal            |            Milestone:
       Component:  Compiler (Type    |              Version:  8.0.1
  checker)                           |
      Resolution:                    |             Keywords:
Operating System:  Unknown/Multiple  |         Architecture:
                                     |  Unknown/Multiple
 Type of failure:  Other             |            Test Case:  partial-
                                     |  sigs/should_compile/T12531
      Blocked By:                    |             Blocking:
 Related Tickets:                    |  Differential Rev(s):
       Wiki Page:                    |
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Comment (by bgamari):

 Indeed, I'm fine with merging this.

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/12531#comment:6>
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