[GHC] #14326: Panic on COMPLETE pragma with mismatched type variable order

[GHC]

#14326: Panic on COMPLETE pragma with mismatched type variable order
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        Reporter:  dailectic         |                Owner:  RyanGlScott
            Type:  bug               |               Status:  new
        Priority:  normal            |            Milestone:
       Component:  Compiler          |              Version:  8.2.1
      Resolution:                    |             Keywords:
                                     |  PatternSynonyms
Operating System:  Unknown/Multiple  |         Architecture:  x86_64
 Type of failure:  Compile-time      |  (amd64)
  crash or panic                     |            Test Case:
      Blocked By:                    |             Blocking:
 Related Tickets:                    |  Differential Rev(s):
       Wiki Page:                    |
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Changes (by RyanGlScott):

 * owner:  (none) => RyanGlScott


Comment:

 Sure enough, the commit that fixed this bug (but also introduced the bug
 in #14135) was 6b77914cd37b697354611bcd87897885c1e5b4a6 (`Fix
 instantiation of pattern synonyms`). I'll add a regression test.

-- 
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/14326#comment:6>
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