Forwarded from https://bugs.launchpad.net/ubuntu/+source/rust-coreutils/+bug/2126909

$ mdkir dir
$ touch file
$ ln file dir
$ ln -f file dir

Gives error: ln: 'file' and 'dir/file' are the same file

But should not notice, as -f unlinks files first.