41 lines
697 B
Rust
41 lines
697 B
Rust
// Regression test for #30104
|
|
|
|
// check-pass
|
|
|
|
use std::ops::{Deref, DerefMut};
|
|
|
|
fn box_two_field(v: &mut Box<(i32, i32)>) {
|
|
let _a = &mut v.0;
|
|
let _b = &mut v.1;
|
|
}
|
|
|
|
fn box_destructure(v: &mut Box<(i32, i32)>) {
|
|
let (ref mut _head, ref mut _tail) = **v;
|
|
}
|
|
|
|
struct Wrap<T>(T);
|
|
|
|
impl<T> Deref for Wrap<T> {
|
|
type Target = T;
|
|
fn deref(&self) -> &T {
|
|
&self.0
|
|
}
|
|
}
|
|
|
|
impl<T> DerefMut for Wrap<T> {
|
|
fn deref_mut(&mut self) -> &mut T {
|
|
&mut self.0
|
|
}
|
|
}
|
|
|
|
fn smart_two_field(v: &mut Wrap<(i32, i32)>) {
|
|
let _a = &mut v.0;
|
|
let _b = &mut v.1;
|
|
}
|
|
|
|
fn smart_destructure(v: &mut Wrap<(i32, i32)>) {
|
|
let (ref mut _head, ref mut _tail) = **v;
|
|
}
|
|
|
|
fn main() {}
|