mirror of
https://github.com/rust-lang/rust-clippy
synced 2024-12-23 19:43:20 +00:00
71 lines
2.6 KiB
Rust
71 lines
2.6 KiB
Rust
//@no-rustfix: overlapping suggestions
|
|
#![warn(clippy::suspicious_to_owned)]
|
|
#![warn(clippy::implicit_clone)]
|
|
#![allow(clippy::redundant_clone)]
|
|
use std::borrow::Cow;
|
|
use std::ffi::{CStr, c_char};
|
|
|
|
fn main() {
|
|
let moo = "Moooo";
|
|
let c_moo = b"Moooo\0";
|
|
let c_moo_ptr = c_moo.as_ptr() as *const c_char;
|
|
let moos = ['M', 'o', 'o'];
|
|
let moos_vec = moos.to_vec();
|
|
|
|
// we expect this to be linted
|
|
let cow = Cow::Borrowed(moo);
|
|
let _ = cow.to_owned();
|
|
//~^ ERROR: this `to_owned` call clones the Cow<'_, str> itself and does not cause the
|
|
//~| NOTE: `-D clippy::suspicious-to-owned` implied by `-D warnings`
|
|
// we expect no lints for this
|
|
let cow = Cow::Borrowed(moo);
|
|
let _ = cow.into_owned();
|
|
// we expect no lints for this
|
|
let cow = Cow::Borrowed(moo);
|
|
let _ = cow.clone();
|
|
|
|
// we expect this to be linted
|
|
let cow = Cow::Borrowed(&moos);
|
|
let _ = cow.to_owned();
|
|
//~^ ERROR: this `to_owned` call clones the Cow<'_, [char; 3]> itself and does not cau
|
|
// we expect no lints for this
|
|
let cow = Cow::Borrowed(&moos);
|
|
let _ = cow.into_owned();
|
|
// we expect no lints for this
|
|
let cow = Cow::Borrowed(&moos);
|
|
let _ = cow.clone();
|
|
|
|
// we expect this to be linted
|
|
let cow = Cow::Borrowed(&moos_vec);
|
|
let _ = cow.to_owned();
|
|
//~^ ERROR: this `to_owned` call clones the Cow<'_, Vec<char>> itself and does not cau
|
|
// we expect no lints for this
|
|
let cow = Cow::Borrowed(&moos_vec);
|
|
let _ = cow.into_owned();
|
|
// we expect no lints for this
|
|
let cow = Cow::Borrowed(&moos_vec);
|
|
let _ = cow.clone();
|
|
|
|
// we expect this to be linted
|
|
let cow = unsafe { CStr::from_ptr(c_moo_ptr) }.to_string_lossy();
|
|
let _ = cow.to_owned();
|
|
//~^ ERROR: this `to_owned` call clones the Cow<'_, str> itself and does not cause the
|
|
// we expect no lints for this
|
|
let cow = unsafe { CStr::from_ptr(c_moo_ptr) }.to_string_lossy();
|
|
let _ = cow.into_owned();
|
|
// we expect no lints for this
|
|
let cow = unsafe { CStr::from_ptr(c_moo_ptr) }.to_string_lossy();
|
|
let _ = cow.clone();
|
|
|
|
// we expect no lints for these
|
|
let _ = moo.to_owned();
|
|
let _ = c_moo.to_owned();
|
|
let _ = moos.to_owned();
|
|
|
|
// we expect implicit_clone lints for these
|
|
let _ = String::from(moo).to_owned();
|
|
//~^ ERROR: implicitly cloning a `String` by calling `to_owned` on its dereferenced ty
|
|
//~| NOTE: `-D clippy::implicit-clone` implied by `-D warnings`
|
|
let _ = moos_vec.to_owned();
|
|
//~^ ERROR: implicitly cloning a `Vec` by calling `to_owned` on its dereferenced type
|
|
}
|