rust/tests/ui/redundant_clone.rs
2018-10-26 01:16:14 +09:00

47 lines
1.2 KiB
Rust

// Copyright 2018 The Rust Project Developers. See the COPYRIGHT
// file at the top-level directory of this distribution.
//
// 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.
#![warn(clippy::redundant_clone)]
use std::path::Path;
use std::ffi::OsString;
fn main() {
let _ = ["lorem", "ipsum"].join(" ").to_string();
let s = String::from("foo");
let _ = s.clone();
let s = String::from("foo");
let _ = s.to_string();
let s = String::from("foo");
let _ = s.to_owned();
let _ = Path::new("/a/b/").join("c").to_owned();
let _ = Path::new("/a/b/").join("c").to_path_buf();
let _ = OsString::new().to_owned();
let _ = OsString::new().to_os_string();
// Check that lint level works
#[allow(clippy::redundant_clone)] let _ = String::new().to_string();
}
#[derive(Clone)]
struct Alpha;
fn double(a: Alpha) -> (Alpha, Alpha) {
if true {
(a.clone(), a.clone())
} else {
(Alpha, a)
}
}