[PATCH v10 4/5] rust: replace `kernel::c_str!` with C-Strings

[Tamir Duberstein]

On Wed, May 28, 2025 at 11:35 AM Benno Lossin <lossin at kernel.org> wrote:
>
> On Wed May 28, 2025 at 12:36 PM CEST, Alice Ryhl wrote:
> > On Mon, May 26, 2025 at 06:29:46PM -0400, Tamir Duberstein wrote:
> >> On Mon, May 26, 2025 at 11:04 AM Benno Lossin <lossin at kernel.org> wrote:
> >> >
> >> > On Sat May 24, 2025 at 10:33 PM CEST, Tamir Duberstein wrote:
> >> > > +macro_rules! c_str_avoid_literals {
> >> >
> >> > I don't like this name, how about `concat_to_c_str` or
> >> > `concat_with_nul`?
> >> >
> >> > This macro also is useful from macros that have a normal string literal,
> >> > but can't turn it into a `c""` one.
> >>
> >> Uh, can you give an example? I'm not attached to the name.
> >
> > I also think it should be renamed. Right now it sounds like it creates a
> > c string while avoiding literals in the input ... whatever that means.
>
> Yeah that's a good way to put why the name is weird.
>
> > I like Benno's suggestions, but str_to_cstr! could also work?
>
> Hmm, I think then people won't know that it can also concat? I don't
> think it matters too much, the macro probably won't be used that often
> and if someone needs to use it, they probably wouldn't fine it by name
> alone.

What do you mean by "it can also concat"? This macro by itself doesn't
concat, it takes only a single expr. The example in the docs
illustrates:

    const MY_CSTR: &CStr = c_str_avoid_literals!(concat!(...));

I think str_to_cstr is ok - I'll do that in v11.