@section @code{freopen}
@findex freopen
-POSIX specification: @url{http://www.opengroup.org/susv3xsh/freopen.html}
+POSIX specification: @url{http://www.opengroup.org/onlinepubs/9699919799/functions/freopen.html}
Gnulib module: freopen
and (without the slash) names a nonexistent file or a file that is not a
directory, on some platforms:
HP-UX 11.00, Solaris 9, Irix 5.3.
+@item
+Applications should not assume that @code{fileno(f)} will be the same
+before and after a call to @code{freopen(name,mode,f)}. However, the
+module freopen-safer can at least protect @code{stdin}, @code{stdout},
+and @code{stderr}.
@end itemize