[GHC] #10762: On Windows, out-of-codepage characters can cause GHC build to fail

[GHC]

#10762: On Windows, out-of-codepage characters can cause GHC build to fail
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        Reporter:  snoyberg      |                   Owner:  snoyberg
            Type:  bug           |                  Status:  new
        Priority:  normal        |               Milestone:
       Component:  Compiler      |                 Version:  7.10.2
      Resolution:                |                Keywords:
Operating System:  Windows       |            Architecture:  x86_64 (amd64)
 Type of failure:  None/Unknown  |               Test Case:
      Blocked By:                |                Blocking:
 Related Tickets:  #6037         |  Differential Revisions:
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Comment (by snoyberg):

 Patch sent to force dump files to be UTF-8 encoded.
 https://phabricator.haskell.org/D1151

 I'm looking into warnings now

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/10762#comment:9>
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