[GHC] #10489: Panic in TcEvidence due to wrong role

[GHC]

#10489: Panic in TcEvidence due to wrong role
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        Reporter:  goldfire          |                   Owner:
            Type:  bug               |                  Status:  closed
        Priority:  highest           |               Milestone:  7.10.3
       Component:  Compiler          |                 Version:  7.11
      Resolution:  fixed             |                Keywords:
Operating System:  Unknown/Multiple  |            Architecture:
                                     |  Unknown/Multiple
 Type of failure:  None/Unknown      |               Test Case:
                                     |  typecheck/should_compile/T10489
      Blocked By:                    |                Blocking:
 Related Tickets:                    |  Differential Revisions:
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Changes (by bgamari):

 * status:  merge => closed


Comment:

 Cheery-picked in 3e1366e34e578fec9cbb2d34ccf0be380fbb2235

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/10489#comment:7>
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