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.

  * This function has an incompatible declaration on some platforms: MacOS X 10.4, Solaris 11 2010-11 (when _POSIX_PTHREAD_SEMANTICS is not defined).

  * This function refuses to do anything when the output buffer is less than 128 bytes large, on some platforms: Solaris 11 2010-11.

Portability problems not fixed by Gnulib: