[GHC] #13099: recompilation can fail to recheck type family instance consistency

[GHC]

#13099: recompilation can fail to recheck type family instance consistency
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        Reporter:  rwbarton          |                Owner:
            Type:  bug               |               Status:  new
        Priority:  normal            |            Milestone:
       Component:  Compiler          |              Version:  8.1
      Resolution:                    |             Keywords:
Operating System:  Unknown/Multiple  |         Architecture:
                                     |  Unknown/Multiple
 Type of failure:  None/Unknown      |            Test Case:
      Blocked By:                    |             Blocking:
 Related Tickets:                    |  Differential Rev(s):
       Wiki Page:                    |
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Comment (by Ben Gamari <ben@…>):

 In [changeset:"b47613178232f8e849ac58ebd4111a34ab9c140b/ghc"
 b4761317/ghc]:
 {{{
 #!CommitTicketReference repository="ghc"
 revision="b47613178232f8e849ac58ebd4111a34ab9c140b"
 Add a failing test for #13099

 Reviewers: austin, bgamari

 Reviewed By: bgamari

 Subscribers: thomie

 Differential Revision: https://phabricator.haskell.org/D2990

 GHC Trac Issues: #13099
 }}}

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/13099#comment:7>
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