Shall safety status of `unistd::fork` be the same as std's `Process::pre_exec`?

[vi]

It is going to be made unsafe, but nix's fork seems to be still safe.

[asomers]

Yep, we should do the same.

[RalfJung]

Indeed, fork should be marked unsafe. It even has a "safety" comment, that should never be the case of a safe function.

[vi]

Why is it still not marked unsafe?

Is it just missing a pull request that adds unsafe to the function and unsafe { } to the tests?

[asomers]

Yep.

[vi]

@asomers, Made the pull request.