[GHC] #12522: GHC 8.0.1 hangs, looping forever in type-checker

[GHC]

#12522: GHC 8.0.1 hangs, looping forever in type-checker
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        Reporter:  clinton           |                Owner:
            Type:  bug               |               Status:  new
        Priority:  normal            |            Milestone:
       Component:  Compiler          |              Version:  8.0.1
      Resolution:                    |             Keywords:
Operating System:  Unknown/Multiple  |         Architecture:
 Type of failure:  Compile-time      |  Unknown/Multiple
  crash                              |            Test Case:
      Blocked By:                    |             Blocking:
 Related Tickets:                    |  Differential Rev(s):
       Wiki Page:                    |
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Comment (by Simon Peyton Jones <simonpj@…>):

 In [changeset:"a6111b8cc14a5dc019e2613f6f634dec4eb57a8a/ghc" a6111b8/ghc]:
 {{{
 #!CommitTicketReference repository="ghc"
 revision="a6111b8cc14a5dc019e2613f6f634dec4eb57a8a"
 More tests for Trac #12522

 These ones test the variations in coment:15 of the ticket
 }}}

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/12522#comment:17>
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