ttyname_r
=========

POSIX specification: http://www.opengroup.org/onlinepubs/9699919799/functions/ttyname_r.html

Gnulib module: ttyname_r

Portability problems fixed by Gnulib:

  * This function is missing on some platforms: NetBSD 3.0, mingw, BeOS.

Portability problems not fixed by Gnulib:

  * This function has an incompatible declaration on some platforms: MacOS X 10.4, Solaris 10 (when _POSIX_PTHREAD_SEMANTICS is not defined).