[GHC] #12869: getChar doesn't work on a new Windows build

22 Nov 2016

      #12869: getChar doesn't work on a new Windows build
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           Reporter:  Darwin226      |             Owner:
               Type:  bug            |            Status:  new
           Priority:  normal         |         Milestone:
          Component:  Runtime        |           Version:  7.10.3
  System                             |
           Keywords:                 |  Operating System:  Windows
       Architecture:  x86_64         |   Type of failure:  Incorrect result
  (amd64)                            |  at runtime
          Test Case:                 |        Blocked By:
           Blocking:                 |   Related Tickets:
Differential Rev(s):                 |         Wiki Page:
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 Last night I updated my PC to the 14965 Windows insider build. Today I
 notice that `getLine` no longer terminates (pressing enter just goes to a
 new line), but I'm suspecting that the root cause it that `getChar`
 returns `'\NUL'` no mather what is input.

 I've tried this both GHCi and in a compiled program.

 This is only broken if I set my codepage to 65001 (UTF-8). If I set it to
 something like 850 it works as it should.

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Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/12869
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