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.