[GHC] #4150: CPP+QuasiQuotes confuses compilation errors' line numbers

[GHC]

#4150: CPP+QuasiQuotes confuses compilation errors' line numbers
-------------------------------------+-------------------------------------
        Reporter:  yairchu           |                   Owner:
            Type:  bug               |                  Status:  new
        Priority:  normal            |               Milestone:  7.12.1
       Component:  Compiler          |                 Version:  6.12.3
  (Parser)                           |                Keywords:
      Resolution:                    |            Architecture:
Operating System:  Unknown/Multiple  |  Unknown/Multiple
 Type of failure:  Incorrect         |               Test Case:
  warning at compile-time            |  quasiquotation/T4150
      Blocked By:                    |                Blocking:
 Related Tickets:                    |  Differential Revisions:
-------------------------------------+-------------------------------------
Changes (by thomie):

 * priority:  low => normal


Comment:

 There is a test already actually: `quasiquotation/T4150`. It is currently
 marked as expect_broken.

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/4150#comment:14>
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