[GHC] #14241: Pattern synonyms defined through other pattern synonyms produce `impossible happened` in ghci/runhaskell

[GHC]

#14241: Pattern synonyms defined through other pattern synonyms produce `impossible
happened` in ghci/runhaskell
-------------------------------+---------------------------------------
        Reporter:  Heimdell    |                Owner:  (none)
            Type:  bug         |               Status:  closed
        Priority:  normal      |            Milestone:
       Component:  Compiler    |              Version:  8.0.1
      Resolution:  duplicate   |             Keywords:  PatternSynonyms
Operating System:  Linux       |         Architecture:  x86_64 (amd64)
 Type of failure:  GHCi crash  |            Test Case:
      Blocked By:              |             Blocking:
 Related Tickets:  #12007      |  Differential Rev(s):
       Wiki Page:              |
-------------------------------+---------------------------------------
Changes (by RyanGlScott):

 * status:  new => closed
 * resolution:   => duplicate
 * related:   => #12007


Comment:

 Thanks for the the bug report. This is a duplicate of #12007, which has
 been fixed since GHC 8.0.2.

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/14241#comment:2>
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