[GHC] #8841: PatternSynonyms error gives wrong source locations

[GHC]

#8841: PatternSynonyms error gives wrong source locations
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        Reporter:  Iceland_jack                  |            Owner:
            Type:  bug                           |           Status:  new
        Priority:  low                           |        Milestone:  7.8.1
       Component:  Compiler                      |          Version:
      Resolution:                                |  7.8.1-rc2
Operating System:  Linux                         |         Keywords:
 Type of failure:  Incorrect warning at          |  PatternSynonyms
  compile-time                                   |     Architecture:  x86
       Test Case:  patsyn/unidir                 |       Difficulty:
        Blocking:                                |  Unknown
                                                 |       Blocked By:
                                                 |  Related Tickets:
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Changes (by simonpj):

 * testcase:   => patsyn/unidir


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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/8841#comment:1>
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