File: not-clone-closure.rs

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rustc 1.89.0%2Bdfsg1-1
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//@compile-flags: --diagnostic-width=300
// Check that closures do not implement `Clone` if their environment is not `Clone`.

struct S(i32);

fn main() {
    let a = S(5);
    let hello = move || {
        println!("Hello {}", a.0);
    };

    let hello = hello.clone(); //~ ERROR the trait bound `S: Clone` is not satisfied
}