projects / rustc.git / blame
| Commit | Line | Data |
|---|---|---|
| 781aab86 | 1 | //@no-rustfix: overlapping suggestions |
| f2b60f7d FG |
2 | #![warn(clippy::suspicious_to_owned)] |
| 3 | #![warn(clippy::implicit_clone)] | |
| 4 | #![allow(clippy::redundant_clone)] | |
| 5 | use std::borrow::Cow; | |
| 6 | use std::ffi::{c_char, CStr}; | |
| 7 | ||
| 8 | fn main() { | |
| 9 | let moo = "Moooo"; | |
| 10 | let c_moo = b"Moooo\0"; | |
| 11 | let c_moo_ptr = c_moo.as_ptr() as *const c_char; | |
| 12 | let moos = ['M', 'o', 'o']; | |
| 13 | let moos_vec = moos.to_vec(); | |
| 14 | ||
| 15 | // we expect this to be linted | |
| 16 | let cow = Cow::Borrowed(moo); | |
| 17 | let _ = cow.to_owned(); | |
| 781aab86 FG |
18 | //~^ ERROR: this `to_owned` call clones the Cow<'_, str> itself and does not cause the |
| 19 | //~| NOTE: `-D clippy::suspicious-to-owned` implied by `-D warnings` | |
| f2b60f7d FG |
20 | // we expect no lints for this |
| 21 | let cow = Cow::Borrowed(moo); | |
| 22 | let _ = cow.into_owned(); | |
| 23 | // we expect no lints for this | |
| 24 | let cow = Cow::Borrowed(moo); | |
| 25 | let _ = cow.clone(); | |
| 26 | ||
| 27 | // we expect this to be linted | |
| 28 | let cow = Cow::Borrowed(&moos); | |
| 29 | let _ = cow.to_owned(); | |
| 781aab86 | 30 | //~^ ERROR: this `to_owned` call clones the Cow<'_, [char; 3]> itself and does not cau |
| f2b60f7d FG |
31 | // we expect no lints for this |
| 32 | let cow = Cow::Borrowed(&moos); | |
| 33 | let _ = cow.into_owned(); | |
| 34 | // we expect no lints for this | |
| 35 | let cow = Cow::Borrowed(&moos); | |
| 36 | let _ = cow.clone(); | |
| 37 | ||
| 38 | // we expect this to be linted | |
| 39 | let cow = Cow::Borrowed(&moos_vec); | |
| 40 | let _ = cow.to_owned(); | |
| 781aab86 | 41 | //~^ ERROR: this `to_owned` call clones the Cow<'_, Vec<char>> itself and does not cau |
| f2b60f7d FG |
42 | // we expect no lints for this |
| 43 | let cow = Cow::Borrowed(&moos_vec); | |
| 44 | let _ = cow.into_owned(); | |
| 45 | // we expect no lints for this | |
| 46 | let cow = Cow::Borrowed(&moos_vec); | |
| 47 | let _ = cow.clone(); | |
| 48 | ||
| 49 | // we expect this to be linted | |
| 50 | let cow = unsafe { CStr::from_ptr(c_moo_ptr) }.to_string_lossy(); | |
| 51 | let _ = cow.to_owned(); | |
| 781aab86 | 52 | //~^ ERROR: this `to_owned` call clones the Cow<'_, str> itself and does not cause the |
| f2b60f7d FG |
53 | // we expect no lints for this |
| 54 | let cow = unsafe { CStr::from_ptr(c_moo_ptr) }.to_string_lossy(); | |
| 55 | let _ = cow.into_owned(); | |
| 56 | // we expect no lints for this | |
| 57 | let cow = unsafe { CStr::from_ptr(c_moo_ptr) }.to_string_lossy(); | |
| 58 | let _ = cow.clone(); | |
| 59 | ||
| 60 | // we expect no lints for these | |
| 61 | let _ = moo.to_owned(); | |
| 62 | let _ = c_moo.to_owned(); | |
| 63 | let _ = moos.to_owned(); | |
| 64 | ||
| 65 | // we expect implicit_clone lints for these | |
| 66 | let _ = String::from(moo).to_owned(); | |
| 781aab86 FG |
67 | //~^ ERROR: implicitly cloning a `String` by calling `to_owned` on its dereferenced ty |
| 68 | //~| NOTE: `-D clippy::implicit-clone` implied by `-D warnings` | |
| f2b60f7d | 69 | let _ = moos_vec.to_owned(); |
| 781aab86 | 70 | //~^ ERROR: implicitly cloning a `Vec` by calling `to_owned` on its dereferenced type |
| f2b60f7d | 71 | } |