//@ run-pass #![allow(overflowing_literals)] #![allow(dead_code)] macro_rules! check { ($m:ident, $t:ty, $v:expr) => {{ mod $m { use std::mem::size_of; #[derive(Copy, Clone, Debug)] enum E { V = $v, A = 0 } static C: E = E::V; pub fn check() { assert_eq!(size_of::(), size_of::<$t>()); assert_eq!(E::V as $t, $v as $t); assert_eq!(C as $t, $v as $t); assert_eq!(format!("{:?}", E::V), "V".to_string()); assert_eq!(format!("{:?}", C), "V".to_string()); } } $m::check(); }} } pub fn main() { check!(a, u8, 0x17); check!(b, u8, 0xe8); check!(c, u16, 0x1727); check!(d, u16, 0xe8d8); check!(e, u32, 0x17273747); check!(f, u32, 0xe8d8c8b8); check!(z, i8, 0x17); check!(y, i8, -0x17); check!(x, i16, 0x1727); check!(w, i16, -0x1727); check!(v, i32, 0x17273747); check!(u, i32, -0x17273747); enum Simple { A, B } assert_eq!(::std::mem::size_of::(), 1); }