src/test/ui/const-generics/different_byref_simple.rs

// Check that different const types are different.
// revisions: full min

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

struct ConstUsize<const V: usize> {}

fn main() {
    let mut u = ConstUsize::<3> {};
    u = ConstUsize::<4> {};
    //~^ ERROR mismatched types
}