src/test/ui/closures/2229_closure_analysis/diagnostics/closure-origin-single-variant-diagnostics.rs

#![feature(capture_disjoint_fields)]
//~^ WARNING: the feature `capture_disjoint_fields` is incomplete
//~| `#[warn(incomplete_features)]` on by default
//~| see issue #53488 <https://github.com/rust-lang/rust/issues/53488>

// Check that precise paths are being reported back in the error message.

enum SingleVariant {
    Point(i32, i32),
}

fn main() {
    let mut point = SingleVariant::Point(10, -10);

    let c = || {
        // FIXME(project-rfc-2229#24): Change this to be a destructure pattern
        // once this is fixed, to remove the warning.
        if let SingleVariant::Point(ref mut x, _) = point {
            //~^ WARNING: irrefutable if-let pattern
            *x += 1;
        }
    };

    let b = c;
    let a = c; //~ ERROR use of moved value: `c` [E0382]
}