[GHC] #3990: UNPACK doesn't unbox data families

[GHC]

#3990: UNPACK doesn't unbox data families
---------------------------------+------------------------------------------
    Reporter:  rl                |        Owner:                         
        Type:  bug               |       Status:  new                    
    Priority:  normal            |    Milestone:  7.2.1                  
   Component:  Compiler          |      Version:  7.0.3                  
    Keywords:                    |     Testcase:                         
   Blockedby:                    |   Difficulty:                         
          Os:  Unknown/Multiple  |     Blocking:                         
Architecture:  Unknown/Multiple  |      Failure:  Runtime performance bug
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Changes (by liyang):

 * cc: hackage.haskell.org@… (added)
  * version:  6.13 => 7.0.3


Comment:

 In 7.0.3, at least there's a warning:
 {{{
     Warning: Ignoring unusable UNPACK pragma on the
              first argument of `T'
 }}}

-- 
Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/3990#comment:5>
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