[GHC] #10490: Missing binder type check in coercion equality test?

[GHC]

#10490: Missing binder type check in coercion equality test?
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        Reporter:  ezyang            |                   Owner:
            Type:  bug               |                  Status:  new
        Priority:  normal            |               Milestone:
       Component:  Compiler (Type    |                 Version:  7.11
  checker)                           |                Keywords:
      Resolution:                    |            Architecture:
Operating System:  Unknown/Multiple  |  Unknown/Multiple
 Type of failure:  None/Unknown      |               Test Case:
      Blocked By:                    |                Blocking:
 Related Tickets:                    |  Differential Revisions:
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Changes (by simonpj):

 * cc: goldfire (added)


Comment:

 That does look wrong, well caught.  Richard, you agree?  Edward, could you
 fix?

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/10490#comment:1>
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