[GHC] #12968: GHC crash with TypeInType and pattern synonym

[GHC]

#12968: GHC crash with TypeInType and pattern synonym
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        Reporter:  dfeuer            |                Owner:
            Type:  bug               |               Status:  closed
        Priority:  normal            |            Milestone:
       Component:  Compiler          |              Version:  8.0.1
      Resolution:  fixed             |             Keywords:
Operating System:  Unknown/Multiple  |         Architecture:
 Type of failure:  Compile-time      |  Unknown/Multiple
  crash or panic                     |            Test Case:
      Blocked By:                    |             Blocking:
 Related Tickets:                    |  Differential Rev(s):
       Wiki Page:                    |
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Comment (by RyanGlScott):

 #12489, perhaps?

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/12968#comment:2>
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