[GHC] #10625: Spurious unused quantified type variable warning with ExistentialQuantification

[GHC]

#10625: Spurious unused quantified type variable warning with
ExistentialQuantification
-------------------------------------+-------------------------------------
        Reporter:  RyanGlScott       |                   Owner:
            Type:  bug               |                  Status:  new
        Priority:  normal            |               Milestone:
       Component:  Compiler (Type    |                 Version:  7.10.1
  checker)                           |                Keywords:
      Resolution:                    |  ExistentialQuantification
Operating System:  Unknown/Multiple  |            Architecture:
 Type of failure:  Incorrect         |  Unknown/Multiple
  warning at compile-time            |               Test Case:
      Blocked By:                    |                Blocking:
 Related Tickets:  #5331             |  Differential Revisions:
-------------------------------------+-------------------------------------
Changes (by thomie):

 * keywords:   => ExistentialQuantification
 * component:  Compiler => Compiler (Type checker)


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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/10625#comment:1>
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