rust/tests/ui/mir/mir_autoderef.rs
2024-02-16 20:02:50 +00:00

29 lines
498 B
Rust

//@ run-pass
use std::ops::{Deref, DerefMut};
pub struct MyRef(u32);
impl Deref for MyRef {
type Target = u32;
fn deref(&self) -> &u32 { &self.0 }
}
impl DerefMut for MyRef {
fn deref_mut(&mut self) -> &mut u32 { &mut self.0 }
}
fn deref(x: &MyRef) -> &u32 {
x
}
fn deref_mut(x: &mut MyRef) -> &mut u32 {
x
}
fn main() {
let mut r = MyRef(2);
assert_eq!(deref(&r) as *const _, &r.0 as *const _);
assert_eq!(deref_mut(&mut r) as *mut _, &mut r.0 as *mut _);
}