5 Removed in POSIX.1-2024.
6 POSIX.1-2017 specification:@* @url{https://pubs.opengroup.org/onlinepubs/9699919799/functions/sigset.html}
10 Portability problems fixed by Gnulib:
14 Portability problems not fixed by Gnulib:
17 This function is missing on some platforms:
18 FreeBSD 6.0, OpenBSD 7.5, Minix 3.1.8, Cygwin 1.5.x, mingw, MSVC 14, Android 7.1.
20 This function is removed in POSIX.1-2024.
21 Use the function @code{sigaction} instead.