| // Copyright 2018 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. |
| |
| trait Unsigned { |
| const MAX: u8; |
| } |
| |
| struct U8(u8); |
| impl Unsigned for U8 { |
| const MAX: u8 = 0xff; |
| } |
| |
| struct Sum<A,B>(A,B); |
| |
| impl<A: Unsigned, B: Unsigned> Unsigned for Sum<A,B> { |
| const MAX: u8 = A::MAX + B::MAX; |
| } |
| |
| fn foo<T>(_: T) -> &'static u8 { |
| &Sum::<U8,U8>::MAX //~ ERROR erroneous constant used |
| //~| ERROR E0080 |
| } |
| |
| fn main() { |
| foo(0); |
| } |
