src/test/ui/const-generics/auxiliary/impl-const.rs

#![cfg_attr(full, feature(const_generics))]
#![cfg_attr(full, allow(incomplete_features))]
#![cfg_attr(min, feature(min_const_generics))]

pub struct Num<const N: usize>;

// Braces around const expression causes crash
impl Num<{5}> {
    pub fn five(&self) {
    }
}