[GHC] #15520: Invalid warning Defined but not used

[GHC]

#15520: Invalid warning Defined but not used
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        Reporter:  rik               |                Owner:  (none)
            Type:  bug               |               Status:  infoneeded
        Priority:  normal            |            Milestone:  8.6.1
       Component:  Compiler          |              Version:  8.4.3
      Resolution:                    |             Keywords:
Operating System:  Unknown/Multiple  |         Architecture:
                                     |  Unknown/Multiple
 Type of failure:  None/Unknown      |            Test Case:
      Blocked By:                    |             Blocking:
 Related Tickets:                    |  Differential Rev(s):
       Wiki Page:                    |
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Changes (by RyanGlScott):

 * status:  new => infoneeded


Comment:

 I'm unable to reproduce the warning you're seeing, but that's only because
 you've posted an incomplete program (which doesn't compile). What is the
 export list you're using here?

-- 
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/15520#comment:1>
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