File: borrowck-imm-ref-to-mut-rec-field-issue-3162-c.rs

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fn main() {
    let mut _a = 3;
    let b = &mut _a;
    {
        let c = &*b;
        _a = 4; //~ ERROR cannot assign to `_a` because it is borrowed
        drop(c);
    }
    drop(b);
}