| #![allow(incomplete_features)] | |
| #![feature(const_trait_impl)] | |
| #![feature(const_fn)] | |
| pub trait Plus { | |
| fn plus(self, rhs: Self) -> Self; | |
| } | |
| impl const Plus for i32 { | |
| fn plus(self, rhs: Self) -> Self { | |
| self + rhs | |
| } | |
| } | |
| impl Plus for u32 { | |
| fn plus(self, rhs: Self) -> Self { | |
| self + rhs | |
| } | |
| } | |
| pub const fn add_i32(a: i32, b: i32) -> i32 { | |
| a.plus(b) // ok | |
| } | |
| pub const fn add_u32(a: u32, b: u32) -> u32 { | |
| a.plus(b) | |
| //~^ ERROR calls in constant functions are limited to constant functions | |
| } | |
| fn main() {} |