[GHC] #13821: bindings for unlifted types are allowed in .hs-boot files and .hsig files

[GHC]

#13821: bindings for unlifted types are allowed in .hs-boot files and .hsig files
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        Reporter:  duog              |                Owner:  (none)
            Type:  bug               |               Status:  new
        Priority:  normal            |            Milestone:
       Component:  Compiler          |              Version:  8.2.1-rc2
      Resolution:                    |             Keywords:
Operating System:  Unknown/Multiple  |         Architecture:
                                     |  Unknown/Multiple
 Type of failure:  GHC accepts       |            Test Case:
  invalid program                    |  typecheck/should_fail/T13821
      Blocked By:                    |             Blocking:
 Related Tickets:                    |  Differential Rev(s):
       Wiki Page:                    |
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Changes (by bgamari):

 * testcase:   => typecheck/should_fail/T13821


Comment:

 Desugaring does seem like a strange time to perform this check.

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/13821#comment:1>
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