Well, strictly speaking, these are not Posix.
>From the Linux man page:
ATTRIBUTES
For an explanation of the terms used in this section, see
attributes(7).
┌─────────────────────┬───────────────┬────────────────────────┐
│Interface │ Attribute │ Value │
├─────────────────────┼───────────────┼────────────────────────┤
│forkpty(), openpty() │ Thread safety │ MT-Safe locale │
├─────────────────────┼───────────────┼────────────────────────┤
│login_tty() │ Thread safety │ MT-Unsafe race:ttyname │
└─────────────────────┴───────────────┴────────────────────────┘
CONFORMING TO
These are BSD functions, present in glibc. They are not
standardized in POSIX.
So, not sure if the posix module is the correct place to add these, even though
they are present in glibc on linux.
I tried musl as well, with it the **{.passL: "-lutil".}** is no longer needed.
