tcgetsid
========

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

Gnulib module: tcgetsid

Portability problems fixed by Gnulib:

  * This function is missing on some platforms: MacOS X 10.3, FreeBSD 6.0, OpenBSD 4.5, Minix 3.1.8, Cygwin, mingw, Interix 3.5, BeOS.

  * This function is not declared on some platforms: OSF/1 5.1.

  * The declaration of this function in C++ compilation units has C++ linkage, not C linkage, on some platforms: HP-UX 11.00.

Portability problems not fixed by Gnulib:

  * This function always fails on some platforms: FreeBSD 6.0, Cygwin, mingw, Interix 3.5, BeOS.