| // check-pass | |
| #![feature(fn_traits, unboxed_closures)] | |
| #[allow(dead_code)] | |
| struct Foo; | |
| impl Fn<(&(),)> for Foo { | |
| extern "rust-call" fn call(&self, (_,): (&(),)) {} | |
| } | |
| impl FnMut<(&(),)> for Foo { | |
| extern "rust-call" fn call_mut(&mut self, (_,): (&(),)) {} | |
| } | |
| impl FnOnce<(&(),)> for Foo { | |
| type Output = (); | |
| extern "rust-call" fn call_once(self, (_,): (&(),)) {} | |
| } | |
| fn main() {} |