3 #![feature(const_swap)]
4 #![feature(const_mut_refs)]
7 struct Demo(u64, bool, u64, u32, u64, u64, u64);
9 const C: (Demo, Demo) = {
10 let mut x = Demo(1, true, 3, 4, 5, 6, 7);
11 let mut y = Demo(10, false, 12, 13, 14, 15, 16);
12 std::mem::swap(&mut x, &mut y);