[GHC] #11288: Thread blocked indefinitely in a Mvar operation

[GHC]

#11288: Thread blocked indefinitely in a Mvar operation
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        Reporter:  ygor_2                 |                Owner:
            Type:  bug                    |               Status:  new
        Priority:  normal                 |            Milestone:
       Component:  Compiler               |              Version:  7.10.2
      Resolution:                         |             Keywords:
Operating System:  Windows                |         Architecture:  x86
 Type of failure:  Installing GHC failed  |            Test Case:
      Blocked By:                         |             Blocking:
 Related Tickets:                         |  Differential Rev(s):
       Wiki Page:                         |
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Comment (by rwbarton):

 It looks like the original error is here:
 {{{
 ghc.exe: fd:4: hGetContents: invalid argument (invalid byte sequence)
 }}}
 I can't fathom a guess as to what it's doing though. Could you perhaps try
 running that failing ghc command with `-v`?

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/11288#comment:2>
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