getnameinfo
===========

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

Gnulib module: getaddrinfo

Portability problems fixed by Gnulib:

  * This function is missing on some platforms: HP-UX 11.11, IRIX 6.5, Cygwin 1.5.x, mingw, MSVC 14.

Portability problems not fixed by Gnulib: