[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 rwbarton):

 So this is LLVM 3.2, I guess (http://packages.ubuntu.com/saucy/llvm)?
 There are known problems with LLVM 3.2 and GHC, can you try with 3.3 or
 3.4?

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/9555#comment:7>
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