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#![feature(generic_const_exprs)] #![allow(incomplete_features)] fn foo<const N: usize, const M: usize>() -> [(); N+2] where [(); N + 1]:, [(); M + 1]:, { bar() //~^ ERROR: unconstrained } fn bar<const N: usize>() -> [(); N] where [(); N + 1]:, { [(); N] } fn main() {}