blob: 70d963cd41f21a86162bbd8d88b5d7a2848236fc (
plain)
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
|
A non-structural-match type was used as the type of a const generic parameter.
Erroneous code example:
```compile_fail,E0741
#![feature(adt_const_params)]
struct A;
struct B<const X: A>; // error!
```
Only structural-match types (that is, types that derive `PartialEq` and `Eq`)
may be used as the types of const generic parameters.
To fix the previous code example, we derive `PartialEq` and `Eq`:
```
#![feature(adt_const_params)]
#[derive(PartialEq, Eq)] // We derive both traits here.
struct A;
struct B<const X: A>; // ok!
```
|
