// Copyright 2012 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.

// compile-flags: -Z parse-only

//error-pattern: discriminator values can only be used with a field-less enum

enum color {
    red = 0xff0000,
    green = 0x00ff00,
    blue = 0x0000ff,
    black = 0x000000,
    white = 0xffffff,
    other (str),
}

// Copyright 2012 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.

// compile-flags: -Z parse-only

//error-pattern: discriminator values can only be used with a c-like enum

enum color {
    red = 0xff0000,
    green = 0x00ff00,
    blue = 0x0000ff,
    black = 0x000000,
    white = 0xffffff,
    other (str),
}

--- 
+++ 
@@ -10,7 +10,7 @@
 
 // compile-flags: -Z parse-only
 
-//error-pattern: discriminator values can only be used with a c-like enum
+//error-pattern: discriminator values can only be used with a field-less enum
 
 enum color {
     red = 0xff0000,
Rename C-like enum to Field-less enum

There is no need to reference the C programming language to explain this concept.