[GHC] #9011: panic - interactiveUI:setBuffering2

[GHC]

#9011: panic - interactiveUI:setBuffering2
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              Reporter:  irneb       |            Owner:
                  Type:  bug         |           Status:  new
              Priority:  normal      |        Milestone:
             Component:  GHCi        |          Version:  7.6.3
            Resolution:              |         Keywords:
      Operating System:  Linux       |     Architecture:  x86_64 (amd64)
       Type of failure:  GHCi crash  |       Difficulty:  Unknown
             Test Case:              |       Blocked By:
              Blocking:              |  Related Tickets:
Differential Revisions:              |
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Comment (by HairyDude):

 Got this in 7.6.3 (Linux Mint 17) with an easy reproduction method:

 1. `mkdir tmp && cd tmp`
 1. `cabal sandbox init`
 1. `echo 'module Test where main = putStrLn "Hello world"' > Test.hs`
 1. `GHC_PACKAGE_PATH=.cabal-sandbox/x86_64-linux-ghc-7.6.3-packages.conf.d
 runghc Test.hs`

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/9011#comment:5>
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