| // 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. |
| |
| // edition:2018 |
| |
| #![deny(unused_extern_crates)] |
| #![feature(alloc, test, rustc_private, crate_visibility_modifier)] |
| |
| extern crate libc; |
| //~^ ERROR unused extern crate |
| //~| HELP remove |
| extern crate libc as x; |
| //~^ ERROR unused extern crate |
| //~| HELP remove |
| |
| extern crate proc_macro; |
| |
| #[macro_use] |
| extern crate test; |
| |
| pub extern crate test as y; |
| |
| pub extern crate alloc; |
| |
| pub(crate) extern crate alloc as a; |
| |
| crate extern crate alloc as b; |
| |
| mod foo { |
| pub(in crate::foo) extern crate alloc as c; |
| |
| pub(super) extern crate alloc as d; |
| |
| extern crate libc; |
| //~^ ERROR unused extern crate |
| //~| HELP remove |
| |
| extern crate libc as x; |
| //~^ ERROR unused extern crate |
| //~| HELP remove |
| |
| pub extern crate test; |
| |
| pub extern crate test as y; |
| |
| mod bar { |
| extern crate libc; |
| //~^ ERROR unused extern crate |
| //~| HELP remove |
| |
| extern crate libc as x; |
| //~^ ERROR unused extern crate |
| //~| HELP remove |
| |
| pub(in crate::foo::bar) extern crate alloc as e; |
| |
| fn dummy() { |
| e::string::String::new(); |
| } |
| } |
| |
| fn dummy() { |
| c::string::String::new(); |
| d::string::String::new(); |
| } |
| } |
| |
| |
| fn main() { |
| a::string::String::new(); |
| b::string::String::new(); |
| |
| proc_macro::TokenStream::new(); |
| } |