43 lines
1.2 KiB
Rust
43 lines
1.2 KiB
Rust
// Copyright 2014 The Rust Project Developers. See the COPYRIGHT
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// file at the top-level directory of this distribution and at
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// http://rust-lang.org/COPYRIGHT.
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//
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// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
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// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
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// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
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// option. This file may not be copied, modified, or distributed
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// except according to those terms.
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// aux-build:lint_unused_extern_crate.rs
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#![deny(unused_extern_crates)]
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#![allow(unused_variables)]
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#![allow(deprecated)]
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#![feature(libc)]
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#![feature(collections)]
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#![feature(rand)]
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extern crate libc; //~ ERROR: unused extern crate
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extern crate collections as collecs; // no error, it is used
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extern crate rand; // no error, the use marks it as used
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// even if imported objects aren't used
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extern crate lint_unused_extern_crate as other; // no error, the use * marks it as used
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#[allow(unused_imports)]
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use rand::isaac::IsaacRng;
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use other::*;
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mod foo {
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// Test that this is unused even though an earler `extern crate rand` is used.
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extern crate rand; //~ ERROR unused extern crate
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}
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fn main() {
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let x: collecs::vec::Vec<usize> = Vec::new();
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let y = foo();
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}
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