Portability problems fixed by Gnulib:
@itemize
@item
+On some platforms, @code{stat("link-to-file/",buf)} succeeds instead
+of failing with @code{ENOTDIR}.
+FreeBSD 7.2, Solaris 9.
+@item
On some platforms, @code{stat(".",buf)} and @code{stat("./",buf)} give
different results:
mingw.