@samp{struct timespec} is not defined on some platforms.
@item
-The type @code{pid_t} is not defined on some platforms:
-MSVC 9.
-
-@item
Some platforms provide a @code{NULL} macro that cannot be used in arbitrary
expressions:
NetBSD 5.0
Portability problems not fixed by Gnulib:
@itemize
+@item
+On some platforms the @code{tv_nsec} member of @code{struct timespec}
+is not of type @code{long}, but is of type @code{long long} instead:
+glibc x32
+
@end itemize