@item
This function is missing on some platforms:
MacOS X 10.5, FreeBSD 5.2.1, NetBSD 5.0, OpenBSD 3.8, AIX 5.1, HP-UX
-11, IRIX 6.5, OSF/1 5.1, Solaris 10, Cygwin 1.7.7, mingw, Interix 3.5, BeOS.
+11, IRIX 6.5, OSF/1 5.1, Solaris 11 2010-11, Cygwin 1.7.7, mingw, Interix 3.5, BeOS.
@end itemize