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// Copyright 2015 The Rust Project Developers. See the COPYRIGHT
// file at the top-level directory of this distribution and at
// http://rust-lang.org/COPYRIGHT.
//
// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
// option. This file may not be copied, modified, or distributed
// except according to those terms.
// Can't use unit struct as enum pattern
// aux-build:empty-struct.rs
#![feature(rustc_attrs)]
// remove prior feature after warning cycle and promoting warnings to errors
#![feature(braced_empty_structs)]
extern crate empty_struct;
use empty_struct::*;
struct Empty2;
enum E {
Empty4
}
// remove attribute after warning cycle and promoting warnings to errors
#[rustc_error]
fn main() { //~ ERROR: compilation successful
let e2 = Empty2;
let e4 = E::Empty4;
let xe2 = XEmpty2;
let xe4 = XE::XEmpty4;
// Rejected by parser as yet
// match e2 {
// Empty2() => () // ERROR `Empty2` does not name a tuple variant or a tuple struct
// }
// match xe2 {
// XEmpty2() => () // ERROR `XEmpty2` does not name a tuple variant or a tuple struct
// }
match e2 {
Empty2(..) => () //~ WARN `Empty2` does not name a tuple variant or a tuple struct
//~^ WARN hard error
}
match xe2 {
XEmpty2(..) => () //~ WARN `XEmpty2` does not name a tuple variant or a tuple struct
//~^ WARN hard error
}
// Rejected by parser as yet
// match e4 {
// E::Empty4() => () // ERROR `E::Empty4` does not name a tuple variant or a tuple struct
// }
// match xe4 {
// XE::XEmpty4() => (), // ERROR `XE::XEmpty4` does not name a tuple variant or a tuple
// _ => {},
// }
match e4 {
E::Empty4(..) => () //~ WARN `E::Empty4` does not name a tuple variant or a tuple struct
//~^ WARN hard error
}
match xe4 {
XE::XEmpty4(..) => (), //~ WARN `XE::XEmpty4` does not name a tuple variant or a tuple
//~^ WARN hard error
_ => {},
}
}
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