[GHC] #13538: Weird kind inference problems with closed type families

[GHC]

#13538: Weird kind inference problems with closed type families
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        Reporter:  achirkin          |                Owner:  (none)
            Type:  bug               |               Status:  patch
        Priority:  normal            |            Milestone:  8.2.1
       Component:  Compiler (Type    |              Version:  8.0.2
  checker)                           |
      Resolution:                    |             Keywords:
Operating System:  Unknown/Multiple  |         Architecture:
 Type of failure:  Incorrect         |  Unknown/Multiple
  error/warning at compile-time      |            Test Case:
      Blocked By:                    |             Blocking:
 Related Tickets:  #13135            |  Differential Rev(s):  Phab:D3426
       Wiki Page:                    |
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Comment (by Ben Gamari <ben@…>):

 In [changeset:"e61900c994334c209a9de763993716314abf9f6d/ghc"
 e61900c9/ghc]:
 {{{
 #!CommitTicketReference repository="ghc"
 revision="e61900c994334c209a9de763993716314abf9f6d"
 Add regression test for #13538

 Commit 2b64e926a628fb2a3710b0360123ea73331166fe (#13135) ended
 up fixing #13538 as well. Let's add a regression test so that it stays
 fixed.

 Test Plan: make test TEST=T13538

 Reviewers: austin, bgamari

 Reviewed By: bgamari

 Subscribers: rwbarton, thomie

 GHC Trac Issues: #13538

 Differential Revision: https://phabricator.haskell.org/D3426
 }}}

--
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/13538#comment:4>
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