[GHC] #9555: internal error: ARR_WORDS object entered!

[GHC]

#9555: internal error: ARR_WORDS object entered!
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              Reporter:  walck       |            Owner:
                  Type:  bug         |           Status:  new
              Priority:  normal      |        Milestone:
             Component:  Compiler    |          Version:  7.8.3
            Resolution:              |         Keywords:
      Operating System:              |     Architecture:  x86_64 (amd64)
  Unknown/Multiple                   |       Difficulty:  Unknown
       Type of failure:              |       Blocked By:
  None/Unknown                       |  Related Tickets:
             Test Case:              |
              Blocking:              |
Differential Revisions:              |
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Comment (by slyfox):

 Aha, those are mostly saucy toolchain except for booter ghc.
 Saucy's universe has '''Version: 7.6.3-4''' of it.

 I'll try to reproduce by building 7.8.3 from it.

 {{{
  ,("Project version","7.8.3")
  ,("Booter version","7.8.2")
 }}}
 Where did 7.8.2 come from?
 Did you build it yourself or I could grab the same version from some ppa?

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/9555#comment:5>
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