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
|
#![feature(generic_const_items)]
#![allow(incomplete_features)]
trait Trait<P> {
const A: ();
const B<const K: u64, const Q: u64>: u64;
const C<T>: T;
const D<const N: usize>: usize;
const E: usize;
const F<T: PartialEq>: ();
}
impl<P> Trait<P> for () {
const A<T>: () = ();
//~^ ERROR const `A` has 1 type parameter but its trait declaration has 0 type parameters
const B<const K: u64>: u64 = 0;
//~^ ERROR const `B` has 1 const parameter but its trait declaration has 2 const parameters
const C<'a>: &'a str = "";
//~^ ERROR const `C` has 0 type parameters but its trait declaration has 1 type parameter
const D<const N: u16>: u16 = N;
//~^ ERROR const `D` has an incompatible generic parameter for trait `Trait`
const E: usize = 1024
where
P: Copy; //~ ERROR impl has stricter requirements than trait
const F<T: Eq>: () = (); //~ ERROR impl has stricter requirements than trait
}
fn main() {}
|
