@node ttyname
@subsection @code{ttyname}
@findex ttyname

POSIX specification:@* @url{https://pubs.opengroup.org/onlinepubs/9799919799/functions/ttyname.html}

Gnulib module: ---

Portability problems fixed by Gnulib:
@itemize
@end itemize

Portability problems not fixed by Gnulib:
@itemize
@item
This function is missing on some platforms:
mingw, MSVC 14.
@item
This function is just a stub that produces an error message on standard error
on some platforms:
Android 4.3.
@end itemize
