Support 'pub const BAR: &CStr = c"hello world";'

[rlidwka]

We have C string literals now stabilized in Rust since rust-lang/rust#105723 (since v1.77.0, which'll be released next month).

It seems reasonable to have const string literals like these:

use std::ffi::CStr;
pub const BAR: &CStr = c"hello world";

and convert them to #define or constexpr or whatever cbindgen usually does with constants

Current behavior is very much not ideal (probably need to update syn to v2?):

$ cbindgen --lang C
thread 'main' panicked at /home/user/.cargo/registry/src/index.crates.io-6f17d22bba15001f/syn-1.0.109/src/lit.rs:1020:13:
Unrecognized literal: `c"hello world"`

[rlidwka]

actually, that's not supported yet in syn: dtolnay/syn#1502

[emilio]

Seems like sending a PR to syn would be the way to go, then once that's merged we can use it...

[rlidwka]

Seems like sending a PR to syn would be the way to go, then once that's merged we can use it...

looks like it's already merged:
dtolnay/syn#1622