[GHC] #8867: newArray# fails to initialize card table correctly

[GHC]

#8867: newArray# fails to initialize card table correctly
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        Reporter:  tibbe             |            Owner:  simonmar
            Type:  bug               |           Status:  new
        Priority:  normal            |        Milestone:
       Component:  Runtime System    |          Version:  7.6.3
      Resolution:                    |         Keywords:
Operating System:  Unknown/Multiple  |     Architecture:  Unknown/Multiple
 Type of failure:  None/Unknown      |       Difficulty:  Unknown
       Test Case:                    |       Blocked By:
        Blocking:                    |  Related Tickets:
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Comment (by simonmar):

 the mark bits and the header are irrelevant for newly allocated arrays, so
 we could probably omit the initialisation of the card table altogether.
 I'll look into this.

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/8867#comment:2>
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