rust/src/test/compile-fail/unused-imports-warn.rs
2013-03-28 23:56:46 -04:00

63 lines
1.8 KiB
Rust

// Copyright 2012 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_imports)];
use cal = bar::c::cc;
use core::either::Right; //~ ERROR unused import
use core::util::*; // shouldn't get errors for not using
// everything imported
// Should get errors for both 'Some' and 'None'
use core::option::{Some, None}; //~ ERROR unused import
//~^ ERROR unused import
use core::io::ReaderUtil; //~ ERROR unused import
// Be sure that if we just bring some methods into scope that they're also
// counted as being used.
use core::io::WriterUtil;
// Make sure this import is warned about when at least one of its imported names
// is unused
use core::vec::{filter, map}; //~ ERROR unused import
mod foo {
pub struct Point{x: int, y: int}
pub struct Square{p: Point, h: uint, w: uint}
}
mod bar {
// Don't ignore on 'pub use' because we're not sure if it's used or not
pub use core::cmp::Eq;
pub mod c {
use foo::Point;
use foo::Square; //~ ERROR unused import
pub fn cc(p: Point) -> int { return 2 * (p.x + p.y); }
}
#[allow(unused_imports)]
mod foo {
use core::cmp::Eq;
}
}
fn main() {
cal(foo::Point{x:3, y:9});
let a = 3;
ignore(a);
io::stdout().write_str(~"a");
let _a = do map(~[2]) |&x| {
x + 2
};
}