rust/tests/ui/structs-enums/borrow-tuple-fields.rs
2024-02-16 20:02:50 +00:00

39 lines
619 B
Rust

//@ run-pass
struct Foo(isize, isize);
fn main() {
let x = (1, 2);
let a = &x.0;
let b = &x.0;
assert_eq!(*a, 1);
assert_eq!(*b, 1);
let mut x = (1, 2);
{
let a = &x.0;
let b = &mut x.1;
*b = 5;
assert_eq!(*a, 1);
}
assert_eq!(x.0, 1);
assert_eq!(x.1, 5);
let x = Foo(1, 2);
let a = &x.0;
let b = &x.0;
assert_eq!(*a, 1);
assert_eq!(*b, 1);
let mut x = Foo(1, 2);
{
let a = &x.0;
let b = &mut x.1;
*b = 5;
assert_eq!(*a, 1);
}
assert_eq!(x.0, 1);
assert_eq!(x.1, 5);
}