-// 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.
-
#![feature(rustc_attrs, const_fn)]
#[rustc_args_required_const(0)]
fn main() {
foo(2);
foo(2 + 3);
- foo(baz());
+ const BAZ: i32 = baz();
+ foo(BAZ);
let a = 4;
foo(A);
foo(a); //~ ERROR: argument 1 is required to be a constant