[GHC] #14965: GHC 8.4.1 bug: -O + separate compilation + three list fields + concatenation; core-lint fails

[GHC]

#14965: GHC 8.4.1 bug: -O + separate compilation + three list fields +
concatenation; core-lint fails
-------------------------------------+-------------------------------------
        Reporter:  blynn             |                Owner:  (none)
            Type:  bug               |               Status:  new
        Priority:  normal            |            Milestone:
       Component:  Compiler          |              Version:  8.4.1
      Resolution:                    |             Keywords:  DWARF
Operating System:  Linux             |         Architecture:
 Type of failure:  Incorrect result  |  Unknown/Multiple
  at runtime                         |            Test Case:  T14965
      Blocked By:                    |             Blocking:
 Related Tickets:                    |  Differential Rev(s):  D4534
       Wiki Page:                    |
-------------------------------------+-------------------------------------

Comment (by Ben Gamari <ben@…>):

 In [changeset:"d1fb5831f574953661a3716720fbc798781d37eb/ghc"
 d1fb5831/ghc]:
 {{{
 #!CommitTicketReference repository="ghc"
 revision="d1fb5831f574953661a3716720fbc798781d37eb"
 testsuite: Add test for #14965
 }}}

-- 
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/14965#comment:6>
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