1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
|
//@ compile-flags: -Znext-solver
#![feature(const_trait_impl)]
#[const_trait]
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 the trait bound `u32: ~const Plus`
}
fn main() {}
|
