[GHC] #13487: GHC panic with deferred custom type errors

[GHC]

#13487: GHC panic with deferred custom type errors
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        Reporter:  DimaSamoz         |                Owner:  (none)
            Type:  bug               |               Status:  merge
        Priority:  normal            |            Milestone:  8.4.1
       Component:  GHCi              |              Version:  8.0.2
      Resolution:                    |             Keywords:
Operating System:  Unknown/Multiple  |         Architecture:
                                     |  Unknown/Multiple
 Type of failure:  Compile-time      |            Test Case:
  crash or panic                     |  typecheck/should_fail/T13487
      Blocked By:                    |             Blocking:
 Related Tickets:                    |  Differential Rev(s):
       Wiki Page:                    |
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Changes (by simonpj):

 * status:  new => merge
 * testcase:   => typecheck/should_fail/T13487


Comment:

 Thanks for the nice example.  Happily, a one-line fix.

 Simon

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/13487#comment:5>
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