[GHC] #11401: No match in record selector ctev_dest

[GHC]

#11401: No match in record selector ctev_dest
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        Reporter:  Lemming           |                Owner:  goldfire
            Type:  bug               |               Status:  new
        Priority:  highest           |            Milestone:  8.0.1
       Component:  Compiler          |              Version:  8.0.1-rc1
      Resolution:                    |             Keywords:  TypeInType
Operating System:  Unknown/Multiple  |         Architecture:
                                     |  Unknown/Multiple
 Type of failure:  None/Unknown      |            Test Case:
      Blocked By:                    |             Blocking:
 Related Tickets:  #11523            |  Differential Rev(s):
       Wiki Page:                    |
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Comment (by Richard Eisenberg <eir@…>):

 In [changeset:"35d37ff8a0bb9f64f347c8e4b6a24d49fd08c9dc/ghc"
 35d37ff8/ghc]:
 {{{
 #!CommitTicketReference repository="ghc"
 revision="35d37ff8a0bb9f64f347c8e4b6a24d49fd08c9dc"
 Fix #11401.

 This commit teaches shortCutReduction about Derived constraints.

 [skip ci]
 }}}

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/11401#comment:12>
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