8.312 ftrylockfile

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

Gnulib module: —

Portability problems fixed by Gnulib:

Portability problems not fixed by Gnulib:

• This function is missing on some platforms: Minix 3.1.8, Solaris 2.4, mingw, MSVC 9.