src/test/compile-fail/associated-const-type-parameter-arrays.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 #![feature(associated_consts)]
  12
  13 pub trait Foo {
  14     const Y: usize;
  15 }
  16
  17 struct Abc;
  18 impl Foo for Abc {
  19     const Y: usize = 8;
  20 }
  21
  22 struct Def;
  23 impl Foo for Def {
  24     const Y: usize = 33;
  25 }
  26
  27 pub fn test<A: Foo, B: Foo>() {
  28     let _array: [u32; <A as Foo>::Y];
  29     //~^ ERROR the trait bound `A: Foo` is not satisfied
  30 }
  31
  32 fn main() {
  33 }