[GHC] #7430: GHC API reports CPP errors in confusing ways

[GHC]

#7430: GHC API reports CPP errors in confusing ways
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              Reporter:              |            Owner:
  MikolajKonarski                    |           Status:  new
                  Type:  bug         |        Milestone:  7.10.1
              Priority:  normal      |          Version:  7.6.1
             Component:  GHC API     |         Keywords:
            Resolution:              |     Architecture:  Unknown/Multiple
      Operating System:  Linux       |       Difficulty:  Unknown
       Type of failure:  Other       |       Blocked By:
             Test Case:              |  Related Tickets:
              Blocking:              |
Differential Revisions:              |
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Comment (by thomie):

 Confirmed with 7.8.3. Unfortunately the example doesn't compile with
 `ghc-7.9.20141121`.

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/7430#comment:4>
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