waitid
======

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

Gnulib module: ---

Portability problems fixed by Gnulib:

Portability problems not fixed by Gnulib:

  * This function is missing on some platforms: FreeBSD 6.0, NetBSD 7.1, OpenBSD 6.7, Minix 3.1.8, Cygwin 2.9, mingw, MSVC 14.

  * As of 2005, no system is known on which waitid with flag WNOWAIT works correctly.