Standard-Compliant_stat_Structure_(Integrity_servers,_Alpha)_

   The C RTL supports an X/Open standard-compliant definition of
   the stat structure and associated definitions. To use these new
   definitions, applications must compile with the _USE_STD_STAT
   feature-test macro defined. Use of _USE_STD_STAT specifies long
   (32-bit) GIDs.

   When compiled with _USE_STD_STAT, the stat structure includes
   these changes:

   o  Type ino_t is defined as an unsigned quadword int. Without _
      USE_STD_STAT, it is an unsigned short.

   o  Type dev_t is defined as a 64-bit integer. Without _USE_STD_
      STAT, it is a 32-bit character pointer.

   o  Type off_t is defined as a 64-bit integer, as if the _
      LARGEFILE macro has been defined. Without _USE_STD_STAT, off_t
      is a 32-bit integer.

   o  Fields st_dev and st_rdev will have unique values per device.
      Without _USE_STD_STAT, uniqueness is not assured.

   o  Fields st_blksize and st_blocks are added. Without _USE_STD_
      STAT, these fields do not exist.