rust/tests/ui/nll/issue-45157.rs

32 lines
513 B
Rust

#![allow(unused)]
#[derive(Clone, Copy, Default)]
struct S {
a: u8,
b: u8,
}
#[derive(Clone, Copy, Default)]
struct Z {
c: u8,
d: u8,
}
union U {
s: S,
z: Z,
}
fn main() {
unsafe {
let mut u = U { s: Default::default() };
let mref = &mut u.s.a;
*mref = 22;
let nref = &u.z.c;
//~^ ERROR cannot borrow `u` (via `u.z.c`) as immutable because it is also borrowed as mutable (via `u.s.a`) [E0502]
println!("{} {}", mref, nref)
}
}