1 // Copyright 2017 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.
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.
13 #![feature(min_const_fn)]
15 const fn foo(x: u32) -> u32 {
21 //~^ WARN this constant cannot be used
22 const Y: u32 = foo(0-1);
23 //~^ WARN this constant cannot be used
24 println!("{} {}", X, Y);
25 //~^ ERROR erroneous constant used
26 //~| ERROR erroneous constant used