src/test/ui/parser/pat-lt-bracket-6.rs

fn main() {
    struct Test(&'static u8, [u8; 0]);
    let x = Test(&0, []);

    let Test(&desc[..]) = x;
    //~^ ERROR: expected one of `)`, `,`, `@`, or `|`, found `[`
    //~^^ ERROR subslice patterns are unstable
}

const RECOVERY_WITNESS: () = 0; //~ ERROR mismatched types