[GHC] #15096: GHC fails to execute gcc on Windows when unicode character is in the path

[GHC]

#15096: GHC fails to execute gcc on Windows when unicode character is in the path
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        Reporter:  nh2               |                Owner:  (none)
            Type:  bug               |               Status:  new
        Priority:  normal            |            Milestone:  8.6.1
       Component:  Build System      |              Version:  8.0.2
      Resolution:                    |             Keywords:
Operating System:  Windows           |         Architecture:
 Type of failure:  GHC doesn't work  |  Unknown/Multiple
  at all                             |            Test Case:
      Blocked By:                    |             Blocking:
 Related Tickets:  #15021            |  Differential Rev(s):
       Wiki Page:                    |
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Comment (by lehins):

 This seems very much related. If the `.hs` file has unicode chars in it,
 compilation will fail on Windows (regardless of the code page setting):

 {{{
 PS C:\phab> ghc Я.hs
 [1 of 1] Compiling Main             ( ?.hs, ?.o )
 Assembler messages:
 Fatal error: can't create ?.o: Invalid argument
 `gcc.exe' failed in phase `Assembler'. (Exit code: 1)
 PS C:\phab> chcp 65001
 Active code page: 65001
 PS C:\phab> ghc Я.hs
 [1 of 1] Compiling Main             ( Я.hs, Я.o )

 Assembler messages:
 Fatal error: can't create ?.o: Invalid argument
 `gcc.exe' failed in phase `Assembler'. (Exit code: 1)
 }}}

-- 
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/15096#comment:2>
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