[GHC] #10982: Warn about unused pattern variables in type families

[GHC]

#10982: Warn about unused pattern variables in type families
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        Reporter:  jstolarek         |                Owner:  msosn
            Type:  feature request   |               Status:  new
        Priority:  normal            |            Milestone:
       Component:  Compiler          |              Version:  7.11
      Resolution:                    |             Keywords:  newcomer
Operating System:  Unknown/Multiple  |         Architecture:
                                     |  Unknown/Multiple
 Type of failure:  None/Unknown      |            Test Case:
      Blocked By:                    |             Blocking:
 Related Tickets:                    |  Differential Rev(s):  Phab:D1576
       Wiki Page:                    |
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Comment (by Jan Stolarek <jan.stolarek@…>):

 In [changeset:"be92c288839e0bfcf0b15e3bb4136d60f8ef2575/ghc"
 be92c288/ghc]:
 {{{
 #!CommitTicketReference repository="ghc"
 revision="be92c288839e0bfcf0b15e3bb4136d60f8ef2575"
 Update hoopl submodule

 Hoopl changes required to implement #10982
 }}}

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/10982#comment:5>
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