[GHC] #10859: Generated Eq instance associates && wrongly

[GHC]

#10859: Generated Eq instance associates && wrongly
-------------------------------------+-------------------------------------
        Reporter:  nomeata           |                Owner:  simonpj
            Type:  bug               |               Status:  merge
        Priority:  lowest            |            Milestone:  8.6.1
       Component:  Compiler          |              Version:  7.10.2
      Resolution:                    |             Keywords:  deriving,
                                     |  newcomer
Operating System:  Unknown/Multiple  |         Architecture:
                                     |  Unknown/Multiple
 Type of failure:  None/Unknown      |            Test Case:
      Blocked By:                    |             Blocking:
 Related Tickets:  #10858            |  Differential Rev(s):  Phab:D5104
       Wiki Page:                    |
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Changes (by monoidal):

 * status:  patch => merge
 * milestone:   => 8.6.1


Comment:

 If it's not too late, this can be merged to 8.6.

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/10859#comment:6>
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