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13.118.20 getresgid

Specified in POSIX.1-2024. Draft specification:
https://www.austingroupbugs.net/view.php?id=1344

Documentation:
man getresgid

Gnulib module: —

Portability problems fixed by Gnulib:

Portability problems not fixed by Gnulib:

• This function is missing on some platforms: macOS 14, NetBSD 10.0, Minix 3.1.8, AIX 5.1, HP-UX 11.00, Solaris 11.4, Cygwin 2.9, mingw, MSVC 14.