File: mut_preserve_binding_mode_2021.rs

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rustc 1.85.0%2Bdfsg3-1
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//@ edition: 2021
//@ compile-flags: -Zunstable-options
#![feature(ref_pat_eat_one_layer_2024)]
#![allow(incomplete_features)]

struct Foo(u8);

fn main() {
    let Foo(mut a) = &Foo(0);
    a = &42;
    //~^ ERROR: mismatched types

    let Foo(mut a) = &mut Foo(0);
    a = &mut 42;
    //~^ ERROR: mismatched types
}