File: coerce-mut.rs

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rustc 1.86.0%2Bdfsg1-1
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fn f(x: &mut i32) {}

fn main() {
    let x = 0;
    f(&x);
    //~^ ERROR mismatched types
    //~| expected mutable reference `&mut i32`
    //~| found reference `&{integer}`
    //~| types differ in mutability
}