// run-pass use std::fmt::Debug; use std::default::Default; trait MyTrait { fn get(&self) -> Self; } impl MyTrait for T where T : Default { fn get(&self) -> T { Default::default() } } #[derive(Clone, Copy, Debug, PartialEq)] struct MyType { dummy: usize } impl MyTrait for MyType { fn get(&self) -> MyType { (*self).clone() } } fn test_eq(m: M, n: M) where M : MyTrait + Debug + PartialEq { assert_eq!(m.get(), n); } pub fn main() { test_eq(0_usize, 0_usize); let value = MyType { dummy: 256 + 22 }; test_eq(value, value); }