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9.899 readdir_r

POSIX specification:
https://pubs.opengroup.org/onlinepubs/9699919799/functions/readdir_r.html

Gnulib module: extensions

Portability problems fixed by Gnulib:

• This function is planned to be removed from POSIX and to be deprecated in glibc. Portable applications should use readdir.
• This function has an incompatible declaration on some platforms: Solaris 11.4 (when _POSIX_PTHREAD_SEMANTICS is not defined).

Portability problems not fixed by Gnulib:

• This function is missing on some platforms: Minix 3.1.8, mingw, MSVC 14.
• On platforms where off_t is a 32-bit type, this function may not work correctly on huge directories larger than 2 GB. Also, on platforms where ino_t is a 32-bit type, this function may report inode numbers incorrectly. This can occur with file systems such as XFS (typically on large disks) and NFS. The fix is to use the AC_SYS_LARGEFILE macro.