rust/src/test/ui/inference/cannot-infer-async.rs

// edition:2018

use std::io::Error;

fn make_unit() -> Result<(), Error> {
    Ok(())
}

fn main() {
    let fut = async {
        make_unit()?;

        Ok(()) //~ ERROR type annotations needed
    };
}
When needing type annotations in local bindings, account for impl Trait and closures Do not suggest nonsensical types when the type inference is failing on `impl Trait` or anonymous closures. 2019-08-12 18:50:46 -05:00			`// edition:2018`

			`use std::io::Error;`

Fix tidy 2019-08-12 20:42:19 -05:00			`fn make_unit() -> Result<(), Error> {`
When needing type annotations in local bindings, account for impl Trait and closures Do not suggest nonsensical types when the type inference is failing on `impl Trait` or anonymous closures. 2019-08-12 18:50:46 -05:00			`Ok(())`
			`}`

			`fn main() {`
			`let fut = async {`
Better rustc_on_unimplemented, and UI test fixes 2021-04-17 13:56:07 -05:00			`make_unit()?;`
Fix tidy 2019-08-12 20:42:19 -05:00
Better rustc_on_unimplemented, and UI test fixes 2021-04-17 13:56:07 -05:00			`Ok(()) //~ ERROR type annotations needed`
When needing type annotations in local bindings, account for impl Trait and closures Do not suggest nonsensical types when the type inference is failing on `impl Trait` or anonymous closures. 2019-08-12 18:50:46 -05:00			`};`
			`}`