[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
-------------------------------------+-------------------------------------
        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:                    |
-------------------------------------+-------------------------------------
Description changed by nh2:

Old description:

> This happens when the location of gcc is under a path with non-ASCII
> directory in it:
>
> {{{
> PS C:\Users\日\stack-test> & 'C:\Users\日
> \AppData\Local\Programs\stack\x86_64-windows\ghc-8.0.2\bin\ghc.exe' -no-
> user-package-db .\Main.hs
> [1 of 1] Compiling Main             ( Main.hs, Main.o )
>
> <no location info>: error:
>     Warning: Couldn't figure out C compiler information!
>              Make sure you're using GNU gcc, or clang
> Unable to start
> C:\Users\?\AppData\Local\Programs\stack\x86_64-windows\ghc-8.0.2\mingw\bin/realgcc.exe
> (error code: 123)
> `gcc.exe' failed in phase `Assembler'. (Exit code: 1)
> }}}
>
> Tested with ghc 8.0.2 on Windows Server 2016 (same setup as in #15021).
>
> This was discovered as part of the effort to make Haskell tooling work
> well for users with non-ASCII user names:
> https://github.com/commercialhaskell/stack/issues/3988

New description:

 This happens when the location of gcc is under a path with non-ASCII
 directory in it:

 {{{
 PS C:\Users\日\stack-test> & 'C:\Users\日
 \AppData\Local\Programs\stack\x86_64-windows\ghc-8.0.2\bin\ghc.exe' -no-
 user-package-db .\Main.hs
 [1 of 1] Compiling Main             ( Main.hs, Main.o )

 <no location info>: error:
     Warning: Couldn't figure out C compiler information!
              Make sure you're using GNU gcc, or clang
 Unable to start
 C:\Users\?\AppData\Local\Programs\stack\x86_64-windows\ghc-8.0.2\mingw\bin/realgcc.exe
 (error code: 123)
 `gcc.exe' failed in phase `Assembler'. (Exit code: 1)
 }}}

 Tested with ghc 8.0.2 on Windows Server 2016 with the system locale set to
 `English (US)` (same setup as in #15021, see there for how to set the
 locale).

 This was discovered as part of the effort to make Haskell tooling work
 well for users with non-ASCII user names:
 https://github.com/commercialhaskell/stack/issues/3988

--

-- 
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/15096#comment:1>
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