2 @subsection @code{vwarnx}
9 @ref{Error Messages,,Error Messages,libc},
12 @url{https://www.gnu.org/software/libc/manual/html_node/Error-Messages.html},
15 @uref{https://www.kernel.org/doc/man-pages/online/pages/man3/vwarnx.3.html,,man vwarnx}.
20 Portability problems fixed by Gnulib:
24 Portability problems not fixed by Gnulib:
27 This function is missing on some platforms:
28 AIX 5.1, HP-UX 11, IRIX 6.5, Solaris 10, mingw, MSVC 14.