Re: [PATCH v2 2/3] rust: alloc: add Vec::resize method

[Miguel Ojeda <miguel.ojeda.sandonis@xxxxxxxxx>]

On Wed, Mar 19, 2025 at 4:59 PM Tamir Duberstein <tamird@xxxxxxxxx> wrote:
>
> If we're talking about the same thing then I think we're both wrong
> and the correct phrasing would have been: "you can avoid underflow
> checking when CONFIG_RUST_OVERFLOW_CHECKS=y by using `checked_sub`". I
> was referring to the underflow check implicit in `new_len -
> self.len()`.

`checked_sub` always checks (if not optimized away). The config option
is about the implicit one.

Do you mean avoiding panics?

Cheers,
Miguel