[GHC] #9213: Maybe important CPP warnings on ghcautoconf.h

[GHC]

#9213: Maybe important CPP warnings on ghcautoconf.h
-------------------------------------+-------------------------------------
        Reporter:  asr               |                   Owner:
            Type:  bug               |                  Status:  closed
        Priority:  normal            |               Milestone:  7.12.1
       Component:  Compiler          |                 Version:  7.10.1-rc2
      Resolution:  invalid           |                Keywords:
Operating System:  Unknown/Multiple  |            Architecture:
 Type of failure:  None/Unknown      |  Unknown/Multiple
      Blocked By:                    |               Test Case:
 Related Tickets:                    |                Blocking:
                                     |  Differential Revisions:
-------------------------------------+-------------------------------------
Changes (by asr):

 * status:  new => closed
 * resolution:   => invalid


Comment:

 cpphs 1.18.8 doesn't handle the `#if defined` syntax, so it isn't a GHC
 bug. I'll report the issue to cpphs' author.

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/9213#comment:14>
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