-// 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;
+use std::path::Path;
fn main() {
let _ = ["lorem", "ipsum"].join(" ").to_string();
let _ = OsString::new().to_os_string();
// Check that lint level works
- #[allow(clippy::redundant_clone)] let _ = String::new().to_string();
+ #[allow(clippy::redundant_clone)]
+ let _ = String::new().to_string();
+
+ let tup = (String::from("foo"),);
+ let _ = tup.0.clone();
+
+ let tup_ref = &(String::from("foo"),);
+ let _s = tup_ref.0.clone(); // this `.clone()` cannot be removed
}
#[derive(Clone)]
struct Alpha;
-fn double(a: Alpha) -> (Alpha, Alpha) {
- if true {
+fn with_branch(a: Alpha, b: bool) -> (Alpha, Alpha) {
+ if b {
(a.clone(), a.clone())
} else {
(Alpha, a)
}
}
+
+struct TypeWithDrop {
+ x: String,
+}
+
+impl Drop for TypeWithDrop {
+ fn drop(&mut self) {}
+}
+
+fn cannot_move_from_type_with_drop() -> String {
+ let s = TypeWithDrop { x: String::new() };
+ s.x.clone() // removing this `clone()` summons E0509
+}