| // check-pass |
| |
| #![feature(box_syntax)] |
| |
| struct Foo { a: isize, b: isize } |
| |
| fn main() { |
| let mut x: Box<_> = box Foo { a: 1, b: 2 }; |
| let (a, b) = (&mut x.a, &mut x.b); |
| |
| let mut foo: Box<_> = box Foo { a: 1, b: 2 }; |
| let (c, d) = (&mut foo.a, &foo.b); |
| |
| // We explicitly use the references created above to illustrate that the |
| // borrow checker is accepting this code *not* because of artificially |
| // short lifetimes, but rather because it understands that all the |
| // references are of disjoint parts of memory. |
| use_imm(d); |
| use_mut(c); |
| use_mut(b); |
| use_mut(a); |
| } |
| |
| fn use_mut<T>(_: &mut T) { } |
| fn use_imm<T>(_: &T) { } |
