File: issue-105608.rs

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rustc 1.89.0%2Bdfsg1-1
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#![feature(generic_const_exprs)]
#![allow(incomplete_features)]

struct Combination<const STRATEGIES: usize>;

impl<const STRATEGIES: usize> Combination<STRATEGIES> {
    fn and<M>(self) -> Combination<{ STRATEGIES + 1 }> {
        Combination
    }
}

pub fn main() {
    Combination::<0>.and::<_>().and::<_>();
    //~^ ERROR: type annotations needed
}