| // run-pass | |
| #![allow(dead_code)] | |
| #![allow(non_camel_case_types)] | |
| #[derive(Copy, Clone)] | |
| struct cat { | |
| meow: extern "Rust" fn(), | |
| } | |
| fn meow() { | |
| println!("meow") | |
| } | |
| fn cat() -> cat { | |
| cat { | |
| meow: meow, | |
| } | |
| } | |
| #[derive(Copy, Clone)] | |
| struct KittyInfo {kitty: cat} | |
| // Code compiles and runs successfully if we add a + before the first arg | |
| fn nyan(kitty: cat, _kitty_info: KittyInfo) { | |
| (kitty.meow)(); | |
| } | |
| pub fn main() { | |
| let kitty = cat(); | |
| nyan(kitty, KittyInfo {kitty: kitty}); | |
| } |