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13.13.6 vwarnx

Documentation:

• https://www.gnu.org/software/libc/manual/html_node/Error-Messages.html,
• man vwarnx.

Gnulib module: —

Portability problems fixed by Gnulib:

Portability problems not fixed by Gnulib:

• This function is missing on some platforms: AIX 5.1, HP-UX 11, Solaris 10, mingw, MSVC 14.