[GHC] #12947: Core lint error

[GHC]

#12947: Core lint error
-------------------------------------+-------------------------------------
        Reporter:  Iceland_jack      |                Owner:  (none)
            Type:  bug               |               Status:  new
        Priority:  normal            |            Milestone:
       Component:  Compiler          |              Version:  8.0.1
      Resolution:                    |             Keywords:
Operating System:  Unknown/Multiple  |         Architecture:
                                     |  Unknown/Multiple
 Type of failure:  None/Unknown      |            Test Case:
      Blocked By:                    |             Blocking:
 Related Tickets:  #13640            |  Differential Rev(s):
       Wiki Page:                    |
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Changes (by RyanGlScott):

 * related:   => #13640


Comment:

 It looks like this is the same problem as reported in #13640, which was
 fixed in commit b4bdbe4957ae8b82c4cda5584203b44d3c4f004f (Don't omit any
 evidence bindings), the fix for #12156. I'll whip up a regression test.

--
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/12947#comment:2>
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