rust/src/test/compile-fail/lint-qualification.rs

// Copyright 2013 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.

#![deny(unused_qualifications)]

mod foo {
    pub fn bar() {}
}

fn main() {
    use foo::bar;
    foo::bar(); //~ ERROR: unnecessary qualification
    bar();

    let _ = || -> Result<(), ()> { try!(Ok(())); Ok(()) }; // issue #37345

    macro_rules! m {
        () => { $crate::foo::bar(); }
    }
    m!(); // issue #37357
}