src/test/ui/match/match-slice-patterns.rs

#![feature(slice_patterns)]

fn check(list: &[Option<()>]) {
    match list {
    //~^ ERROR `&[_, Some(_), None, _]` not covered
        &[] => {},
        &[_] => {},
        &[_, _] => {},
        &[_, None, ..] => {},
        &[.., Some(_), _] => {},
    }
}

fn main() {}