[GHC] #10822: GHC inconsistently handles \\?\ for long paths on Windows

[GHC]

#10822: GHC inconsistently handles \\?\ for long paths on Windows
---------------------------------+----------------------------------------
        Reporter:  snoyberg      |                Owner:  (none)
            Type:  bug           |               Status:  upstream
        Priority:  normal        |            Milestone:  8.6.1
       Component:  Compiler      |              Version:  7.10.2
      Resolution:                |             Keywords:
Operating System:  Windows       |         Architecture:  Unknown/Multiple
 Type of failure:  None/Unknown  |            Test Case:
      Blocked By:                |             Blocking:
 Related Tickets:                |  Differential Rev(s):  Phab:D4416
       Wiki Page:                |
---------------------------------+----------------------------------------
Changes (by Phyx-):

 * status:  patch => upstream


Comment:

 underlying toolchain needs fixing now.

-- 
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/10822#comment:6>
GHC <http://www.haskell.org/ghc/>
The Glasgow Haskell Compiler