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use std::ops::{Deref, DerefMut};
struct DerefTarget {
target_field: bool,
}
struct Container {
target: DerefTarget,
container_field: bool,
}
impl Deref for Container {
type Target = DerefTarget;
fn deref(&self) -> &Self::Target {
&self.target
}
}
impl DerefMut for Container {
fn deref_mut(&mut self) -> &mut Self::Target {
&mut self.target
}
}
impl Container {
fn bad_borrow(&mut self) {
let first = &mut self.target_field;
self.container_field = true; //~ ERROR E0506
first;
}
}
fn main() {}
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