[GHC] #4347: Bug in unification of polymorphic and not-yet-polymorphic type

[GHC]

#4347: Bug in unification of polymorphic and not-yet-polymorphic type
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        Reporter:  dolio             |                Owner:  (none)
            Type:  bug               |               Status:  closed
        Priority:  normal            |            Milestone:  7.10.1
       Component:  Compiler (Type    |              Version:  7.1
  checker)                           |             Keywords:
      Resolution:  wontfix           |  ImpredicativeTypes
Operating System:  Linux             |         Architecture:  x86_64
 Type of failure:  GHC rejects       |  (amd64)
  valid program                      |            Test Case:
      Blocked By:                    |             Blocking:
 Related Tickets:                    |  Differential Rev(s):
       Wiki Page:                    |
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Changes (by simonpj):

 * keywords:   => ImpredicativeTypes


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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/4347#comment:17>
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