This function is missing on some platforms:
mingw, Interix 3.5, BeOS.
@item
+On some platforms, this function mis-handles trailing slash:
+FreeBSD 7.2, Solaris 9.
+@item
This function cannot set full timestamp resolution. In particular,
some platforms incorrectly round rather than truncate. Use
-@code{utimensat(AT_FDCWD,file,times,0)} instead.
+@code{utimensat(AT_FDCWD,file,times,0)}, or the gnulib module utimens,
+instead.
@item
On some platforms, @code{utimes (file, NULL)} fails to set the
file's timestamp to the current time: