src/test/ui/nll/reference-carried-through-struct-field.rs


1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16

//revisions: ast mir
//[mir] compile-flags: -Z borrowck=mir

#![allow(unused_assignments)]

struct Wrap<'a> { w: &'a mut u32 }

fn foo() {
    let mut x = 22;
    let wrapper = Wrap { w: &mut x };
    x += 1; //[ast]~ ERROR cannot assign to `x` because it is borrowed [E0506]
    //[mir]~^ ERROR cannot use `x` because it was mutably borrowed [E0503]
    *wrapper.w += 1;
}

fn main() { }