@itemize
@item
This header file is missing on some platforms:
-HP-UX 11.11, NonStop Kernel, mingw, BeOS.
+HP-UX 11.11, NonStop Kernel, mingw, MSVC 9, BeOS.
@item
This header file is not self-contained on some platforms: it requires
@code{<sys/types.h>} to be included first.
This header file does not define @code{struct timeval} on some platforms:
OSF/1 4.0.
@item
-This header file is not self-contained --- it requires @code{<string.h>}
-before @code{FD_ZERO} can be used --- on some platforms:
-Solaris 11 2010-11.
+This header file is not self-contained---it requires @code{<string.h>}
+before @code{FD_ZERO} can be used---on some platforms:
+AIX 7.1, Solaris 11 2011-11.
@end itemize
Portability problems not fixed by Gnulib: