struct A<const N: usize>;
fn main() {
let _: A<7>; // ok
let _: A<{ 7 }>; //~ WARN unnecessary braces
let _: A<{ 3 + 5 }>; // ok
struct A<const N: usize>;
fn main() {
let _: A<7>; // ok
let _: A<{ 7 }>; //~ WARN unnecessary braces
let _: A<{ 3 + 5 }>; // ok