[GHC] #4166: unsafeCoerce#'s kind is not as liberal enough to inspect tag bits.

[GHC]

#4166: unsafeCoerce#'s kind is not as liberal enough to inspect tag bits.
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    Reporter:  ekmett            |       Owner:              
        Type:  feature request   |      Status:  new         
    Priority:  normal            |   Component:  Compiler    
     Version:  6.12.3            |    Keywords:              
          Os:  Unknown/Multiple  |    Testcase:              
Architecture:  Unknown/Multiple  |     Failure:  None/Unknown
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Changes (by ekmett):

 * cc: ekmett@… (added)


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Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/4166#comment:1>
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