1 // Copyright 2016 The Rust Project Developers. See the COPYRIGHT
2 // file at the top-level directory of this distribution and at
3 // http://rust-lang.org/COPYRIGHT.
5 // Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
6 // http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
7 // <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
8 // option. This file may not be copied, modified, or distributed
9 // except according to those terms.
11 #![feature(untagged_unions)]
19 let u = U {}; //~ ERROR union expressions should have exactly one field
20 let u = U { a: 0 }; // OK
21 let u = U { a: 0, b: 1 }; //~ ERROR union expressions should have exactly one field
22 let u = U { a: 0, b: 1, c: 2 }; //~ ERROR union expressions should have exactly one field
23 //~^ ERROR union `U` has no field named `c`
24 //~| NOTE `U` does not have this field
25 let u = U { ..u }; //~ ERROR union expressions should have exactly one field
26 //~^ ERROR functional record update syntax requires a struct
28 let U {} = u; //~ ERROR union patterns should have exactly one field
29 let U { a } = u; // OK
30 let U { a, b } = u; //~ ERROR union patterns should have exactly one field
31 let U { a, b, c } = u; //~ ERROR union patterns should have exactly one field
32 //~^ ERROR union `U` does not have a field named `c`
33 //~| NOTE union `U` does not have field `c`
34 let U { .. } = u; //~ ERROR union patterns should have exactly one field
35 //~^ ERROR `..` cannot be used in union patterns
36 let U { a, .. } = u; //~ ERROR `..` cannot be used in union patterns