Description of problem:

  As per upstream mailing list post here:

    http://supercolony.gluster.org/pipermail/gluster-devel/2014-August/041888.html

    Emmanuel Dreyfus wrote:

      I note this kind of warnings:

      meta-helpers.c:42:13: warning: cast to pointer from integer of different
size
      meta-helpers.c: In function 'meta_fd_release':

      This is caused by the attempt to use uint64_t as a placeholder for
      pointers. That causes warnings on machines with 32 bit pointers, and of
      course you are doomed the day pointers get bigger than 64 bits (not for
      tomorrow, but we all know computers do not need more than 640 kB,
      right?)

      uintptr_t is the right type to use in such a situation. POSIX defines it
      as an unsigned integer capable of holding a pointer. <stdint.h> takes
      care of defining it to the right size:
      http://pubs.opengroup.org/onlinepubs/009695399/basedefs/stdint.h.html

      Fixing this warning in meta-helpers.c means modifying libglusterfs
      interfaces and cause a widespread change, hence I will not submit it,
      but I just share that information in case some courageous developer want
      to give it a try for the sake of portability.


    And from further discussion off list:

      The point is that when there is the need for a cast from pointer
      to int, uintptr_t should be used, as there is the guarantee that
      its size fits the pointer size.
      http://pubs.opengroup.org/onlinepubs/009695399/basedefs/stdint.h.html

      When displaying such an int, printf("%"PRIxPTR, var); shoud be used
      http://pubs.opengroup.org/onlinepubs/009695399/basedefs/inttypes.h.html


Version-Release number of selected component (if applicable):

  Upstream GlusterFS git, master branch, as of Monday 11th August 2014.