rust/tests/ui/empty/empty-struct-braces-pat-1.rs

// Can't use empty braced struct as constant pattern

//@ aux-build:empty-struct.rs

extern crate empty_struct;
use empty_struct::*;

struct Empty1 {}

enum E {
    Empty3 {}
}

fn main() {
    let e1 = Empty1 {};
    let e3 = E::Empty3 {};
    let xe1 = XEmpty1 {};
    let xe3 = XE::XEmpty3 {};

    match e1 {
        Empty1 => () // Not an error, `Empty1` is interpreted as a new binding
    }
    match e3 {
        E::Empty3 => ()
        //~^ ERROR expected unit struct, unit variant or constant, found struct variant `E::Empty3`
    }
    match xe1 {
        XEmpty1 => () // Not an error, `XEmpty1` is interpreted as a new binding
    }
    match xe3 {
        XE::XEmpty3 => ()
    //~^ ERROR expected unit struct, unit variant or constant, found struct variant `XE::XEmpty3`
    }
}