rust/tests/ui/empty/empty-struct-braces-pat-1.rs
2024-02-16 20:02:50 +00:00

35 lines
794 B
Rust

// 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`
}
}