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// edition:2021
// Test that we can't mutate a place if we need to deref an imm-borrow
// to reach it.
fn imm_mut_ref() {
let mut x = String::new();
let y = String::new();
let mref_x = &mut x;
let ref_mref_x = &mref_x;
let c = || {
//~^ ERROR: cannot borrow `**ref_mref_x` as mutable, as it is behind a `&` reference
**ref_mref_x = y;
};
c();
}
fn mut_imm_ref() {
let x = String::new();
let y = String::new();
let mut ref_x = &x;
let mref_ref_x = &mut ref_x;
let c = || {
//~^ ERROR: cannot borrow `**mref_ref_x` as mutable, as it is behind a `&` reference
**mref_ref_x = y;
};
c();
}
fn main() {
imm_mut_ref();
mut_imm_ref();
}
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