src/test/compile-fail/associated-item-duplicate-names.rs

   1 // Copyright 2015 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.
   4 //
   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.
  10
  11 // Test for issue #23969
  12
  13 #![feature(associated_consts)]
  14
  15 trait Foo {
  16     type Ty;
  17     const BAR: u32;
  18 }
  19
  20 impl Foo for () {
  21     type Ty = ();
  22     type Ty = usize; //~ ERROR duplicate definitions
  23     const BAR: u32 = 7;
  24     const BAR: u32 = 8; //~ ERROR duplicate definitions
  25 }
  26
  27 fn main() {
  28     let _: <() as Foo>::Ty = ();
  29     let _: u32 = <() as Foo>::BAR;
  30 }