[GHC] #16385: Lousy error message for `instance forall c. c`

[GHC]

#16385: Lousy error message for `instance forall c. c`
-------------------------------------+-------------------------------------
        Reporter:  RyanGlScott       |                Owner:  (none)
            Type:  bug               |               Status:  closed
        Priority:  normal            |            Milestone:  8.10.1
       Component:  Compiler          |              Version:  8.6.3
      Resolution:  fixed             |             Keywords:
Operating System:  Unknown/Multiple  |         Architecture:
                                     |  Unknown/Multiple
 Type of failure:  Poor/confusing    |            Test Case:
  error message                      |  rename/should_fail/T16385
      Blocked By:                    |             Blocking:
 Related Tickets:                    |  Differential Rev(s):
       Wiki Page:                    |  https://gitlab.haskell.org/ghc/ghc/merge_requests/483
-------------------------------------+-------------------------------------
Changes (by RyanGlScott):

 * status:  patch => closed
 * testcase:   => rename/should_fail/T16385
 * resolution:   => fixed
 * milestone:   => 8.10.1


Comment:

 Fixed in
 [https://gitlab.haskell.org/ghc/ghc/commit/78dd04f9126dc5df966070b8db4b39a517a9d99f
 78dd04f9].

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/16385#comment:2>
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