[GHC] #3966: Warn about useless UNPACK pragmas

[GHC]

#3966: Warn about useless UNPACK pragmas
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  Reporter:  tibbe                           |          Owner:                  
      Type:  feature request                 |         Status:  new             
  Priority:  normal                          |      Milestone:  7.0.1           
 Component:  Compiler                        |        Version:  6.12.1          
Resolution:                                  |       Keywords:                  
        Os:  Unknown/Multiple                |   Architecture:  Unknown/Multiple
   Failure:  None/Unknown                    |     Difficulty:                  
  Testcase:  typecheck/should_compile/T3966  |      Blockedby:                  
  Blocking:                                  |        Related:                  
---------------------------------------------+------------------------------
Changes (by tibbe):

  * status:  closed => new
  * resolution:  fixed =>


Comment:

 This warning seems to have disappeared again in 7.4.1.

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Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/3966#comment:3>
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