[GHC] #14723: GHC 8.4.1-alpha loops infinitely when typechecking

[GHC]

#14723: GHC 8.4.1-alpha loops infinitely when typechecking
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        Reporter:  RyanGlScott       |                Owner:  (none)
            Type:  bug               |               Status:  merge
        Priority:  highest           |            Milestone:  8.4.1
       Component:  Compiler (Type    |              Version:  8.4.1-alpha1
  checker)                           |
      Resolution:                    |             Keywords:
Operating System:  Unknown/Multiple  |         Architecture:
                                     |  Unknown/Multiple
 Type of failure:  Compile-time      |            Test Case:
  performance bug                    |  polykinds/T14723
      Blocked By:                    |             Blocking:
 Related Tickets:                    |  Differential Rev(s):
       Wiki Page:                    |
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Changes (by simonpj):

 * testcase:   => polykinds/T14723


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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/14723#comment:8>
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