Data type return by macro cstr! show as '()' in IDE of Idea

[yiv]

#[no_mangle]
pub extern "C" fn load_page(port: i64, url: *const raw::c_char) -> i32 {
    let rt = runtime!();
    let url = cstr!(url);
    let t = Isolate::new(port).task(scrap::load_page(url));
    rt.spawn(t);
    1
}

I am using IDE of Idea with Rust plugin to develop, it shows the returned data type of macro cstr! is '()'

mismatched types [E0308] expected `&str`, found `()` 

But the returned data type of other micros shows correctly, like runtime!

[shekohex]

Does the code compile? Try runbcargo check and see if there is any errors.
Because sometimes IDE is wrong and gives a false-postive error.

[yiv]

Yes it does, just because of seeing runtime! give the right type, cstr! make me a little anoying, so I am wondering whether any ingnored implement need to be improved in macro cstr!

Thanks for replying, if nothing need to be done, then this issue could be closed

[shekohex]

I'm currently not using IDEA from Jetbrains, but as far as I remember, there was an option in the Rust Plugin Settings to enable something called "experimental macro engine" , or something like that.

I guess if that is enabled you should get better types support.

Also check (run cargo check on Save) option should give you the right feedback.

I hope that will help you with that issue.

PS: I'm using rust-analyzer right now, and it doesn't give any errors related to the macros, and gives the correct types too.