[GHC] #3486: Data.ByteString.elemIndices causes SEGV

[GHC]

#3486: Data.ByteString.elemIndices causes SEGV
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    Reporter:  nwn             |        Owner:  duncan 
        Type:  bug             |       Status:  new    
    Priority:  high            |    Milestone:  6.12.1 
   Component:  libraries/base  |      Version:  6.10.4 
    Severity:  normal          |   Resolution:         
    Keywords:                  |   Difficulty:  Unknown
    Testcase:                  |           Os:  MacOS X
Architecture:  x86             |  
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Comment (by duncan):

 Attached patch should fix it (and #3487). Just awaiting further review.

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Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/3486#comment:4>
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