// 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.

// edition:2018

#![feature(uniform_paths)]

// Tests that arbitrary crates (other than `core`, `std` and `meta`)
// aren't allowed without `--extern`, even if they're in the sysroot.
use alloc; //~ ERROR unresolved import `alloc`
use test; //~ ERROR cannot import a built-in macro
use proc_macro; // OK, imports the built-in `proc_macro` attribute, but not the `proc_macro` crate.

fn main() {}