os-rust/tests/ui/borrowck/borrowck-fn-in-const-a.rs

// Check that we check fns appearing in constant declarations.
// Issue #22382.

const MOVE: fn(&String) -> String = {
    fn broken(x: &String) -> String {
        return *x //~ ERROR cannot move
    }
    broken
};

fn main() {
    println!("{}", MOVE(&String::new()));
}