rust/src/test/ui/consts/const-fn-stability-calls-3.rs

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// Copyright 2015 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.
// Test use of const fn from another crate without a feature gate.
#![feature(rustc_attrs)]
#![allow(unused_variables)]
// aux-build:const_fn_lib.rs
extern crate const_fn_lib;
use const_fn_lib::foo;
#[rustc_error]
fn main() { //~ ERROR compilation successful
let x = foo(); // use outside a constant is ok
}