In 4b8222983f (Cygwin: fix errno values set by readlinkat, 2023-04-18)
the code of `readlinkat()` was adjusted to align the `errno` with Linux'
behavior.
To accommodate for that, the `gen_full_path_at()` function was modified,
and the caller was adjusted to expect either `ENOENT` or `ENOTDIR` in
This old kludge code assigns fhandler_console for /dev/tty even
if the CTTY is not a console when stat() has been called. Due to
this, the problem reported in
https://cygwin.com/pipermail/cygwin/2023-June/253888.html
occurs after the commit 3721a756b0d8 ("Cygwin: console: Make the
console
