File: destructor-restrictions.rs

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rustc 1.70.0%2Bdfsg1-9
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// Tests the new destructor semantics.

use std::cell::RefCell;

fn main() {
    let b = {
        let a = Box::new(RefCell::new(4));
        *a.borrow() + 1
    }; //~^ ERROR `*a` does not live long enough
    println!("{}", b);
}