fdatasync
=========

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

Gnulib module: fdatasync

Portability problems fixed by Gnulib:

  * This function is present but not declared on some platforms: MacOS X 10.7.

  * This function is missing on some platforms: MacOS X 10.5, FreeBSD 6.0, OpenBSD 3.8, Minix 3.1.8, IRIX 5.3, Solaris 2.4, mingw, MSVC 9, Interix 3.5, BeOS.

Portability problems not fixed by Gnulib: