[GHC] #15242: Typechecker sometimes doesn't preserve HsPar in original source.

[GHC]

#15242: Typechecker sometimes doesn't preserve HsPar in original source.
-------------------------------------+-------------------------------------
        Reporter:  wz1000            |                Owner:  (none)
            Type:  bug               |               Status:  patch
        Priority:  normal            |            Milestone:
       Component:  Compiler (Type    |              Version:  8.5
  checker)                           |
      Resolution:                    |             Keywords:
Operating System:  Unknown/Multiple  |         Architecture:
                                     |  Unknown/Multiple
 Type of failure:  Other             |            Test Case:  T15242
      Blocked By:                    |             Blocking:
 Related Tickets:                    |  Differential Rev(s):  D4822
       Wiki Page:                    |
-------------------------------------+-------------------------------------
Changes (by wz1000):

 * status:  new => patch
 * testcase:   => T15242
 * differential:   => D4822


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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/15242#comment:1>
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