1 // check-pass 2 #![allow(dead_code)] 3 #[derive(Copy,Clone)] 4 struct Functions { 5 a: fn(u32) -> u32, 6 b: extern "C" fn(u32) -> u32, 7 c: unsafe fn(u32) -> u32, 8 d: unsafe extern "C" fn(u32) -> u32 9 } 10 main()11 pub fn main() {} 12