// run-pass #![allow(dead_code)] // Extending Num and using inherited static methods // pretty-expanded FIXME #23616 pub trait NumCast: Sized { fn from(i: i32) -> Option; } pub trait Num { fn from_int(i: isize) -> Self; fn gt(&self, other: &Self) -> bool; } pub trait NumExt: NumCast + PartialOrd { } fn greater_than_one(n: &T) -> bool { n.gt(&NumCast::from(1).unwrap()) } pub fn main() {}