rust/tests/ui/lint/unnecessary-extern-crate.rs
2023-01-11 09:32:08 +00:00

72 lines
1.2 KiB
Rust

// edition:2018
#![deny(unused_extern_crates)]
#![feature(test, rustc_private)]
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;
pub(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();
}