rust/tests/ui/mut/mut-cant-alias.rs
2023-01-11 09:32:08 +00:00

15 lines
276 B
Rust

use std::cell::RefCell;
fn main() {
let m = RefCell::new(0);
let mut b = m.borrow_mut();
let b1 = &mut *b;
let b2 = &mut *b; //~ ERROR cannot borrow
b1.use_mut();
}
trait Fake { fn use_mut(&mut self) { } fn use_ref(&self) { } }
impl<T> Fake for T { }