src/test/run-pass/issue-24947.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 // #24947 ICE using a trait-associated const in an array size
  12
  13 #![feature(associated_consts)]
  14
  15 struct Foo;
  16
  17 impl Foo {
  18     const SIZE: usize = 8;
  19 }
  20
  21 trait Bar {
  22     const BAR_SIZE: usize;
  23 }
  24
  25 impl Bar for Foo {
  26     const BAR_SIZE: usize = 12;
  27 }
  28
  29 #[allow(unused_variables)]
  30 fn main() {
  31     let w: [u8; 12] = [0u8; <Foo as Bar>::BAR_SIZE];
  32     let x: [u8; 12] = [0u8; <Foo>::BAR_SIZE];
  33     let y: [u8; 8] = [0u8; <Foo>::SIZE];
  34     let z: [u8; 8] = [0u8; Foo::SIZE];
  35 }