[GHC] #12971: Paths are encoded incorrectly when invoking GCC

[GHC]

#12971: Paths are encoded incorrectly when invoking GCC
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        Reporter:  erikprantare  |                Owner:  Phyx
            Type:  bug           |               Status:  new
        Priority:  highest       |            Milestone:  8.2.1
       Component:  Compiler      |              Version:  8.0.1
      Resolution:                |             Keywords:
Operating System:  Windows       |         Architecture:  Unknown/Multiple
 Type of failure:  None/Unknown  |            Test Case:
      Blocked By:                |             Blocking:
 Related Tickets:                |  Differential Rev(s):
       Wiki Page:                |
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Changes (by bgamari):

 * owner:   => Phyx


Comment:

 Phyx kindly said he would take this from here.

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/12971#comment:7>
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