[GHC] #14415: Win32 SEH unwinding should print segfaults to stderr, not stdout

2 Nov 2017

      #14415: Win32 SEH unwinding should print segfaults to stderr, not stdout
-------------------------------------+-------------------------------------
           Reporter:  NeilMitchell   |             Owner:  (none)
               Type:  bug            |            Status:  new
           Priority:  normal         |         Milestone:
          Component:  Runtime        |           Version:  8.2.1
  System                             |
           Keywords:                 |  Operating System:  Windows
       Architecture:                 |   Type of failure:  Poor/confusing
  Unknown/Multiple                   |  error message
          Test Case:                 |        Blocked By:
           Blocking:                 |   Related Tickets:
Differential Rev(s):                 |         Wiki Page:
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 Looking at ghc/rts/win32/veh_excn.c we can see that on segfaults, e.g.
 null pointer access, GHC calls:

 {{{
 fprintf(stdout, "Access violation in generated code"
 }}}

 Given these are segfaults, it seems that stderr would be a more
 appropriate stream to use.

-- 
Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/14415
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