src/test/ui/consts/min_const_fn/address_of.rs

#![feature(raw_ref_op)]

const fn mutable_address_of_in_const() {
    let mut a = 0;
    let b = &raw mut a;         //~ ERROR mutable reference
}

struct X;

impl X {
    const fn inherent_mutable_address_of_in_const() {
        let mut a = 0;
        let b = &raw mut a;     //~ ERROR mutable reference
    }
}

fn main() {}