[GHC] #9806: malloc and mallocArray ignore Storable alignment requirements

[GHC]

#9806: malloc and mallocArray ignore Storable alignment requirements
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        Reporter:  ekmett            |                   Owner:
            Type:  bug               |                  Status:  new
        Priority:  normal            |               Milestone:  7.12.1
       Component:  Core Libraries    |                 Version:  7.8.3
      Resolution:                    |                Keywords:
Operating System:  Unknown/Multiple  |            Architecture:
 Type of failure:  None/Unknown      |  Unknown/Multiple
      Blocked By:                    |               Test Case:
 Related Tickets:  #8627             |                Blocking:
                                     |  Differential Revisions:
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Comment (by Yuras):

 Sorry my broken Engligh. Yes, `posix_memalign` requires `free` for
 deallocation, but I was trying to say, that we have to use other API on
 platforms that don't have `posix_memalign`. E.g. `pagealign_alloc`
 requires `pagealign_free`. If we provide strong alignment guarantees for
 `malloc`, then we should be able to implement that on all current and
 future platforms.

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/9806#comment:11>
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