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