rust/src/test/ui/issues/issue-39211.rs

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#![feature(associated_consts)]
trait VecN {
const DIM: usize;
}
trait Mat {
type Row: VecN;
}
fn m<M: Mat>() {
let a = [3; M::Row::DIM]; //~ ERROR associated type `Row` not found for `M`
}
fn main() {
}