2023-06-15 12:11:25 +00:00
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#![allow(
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clippy::incorrect_clone_impl_on_copy_type,
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clippy::incorrect_partial_ord_impl_on_ord_type,
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dead_code
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)]
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2018-07-28 15:34:52 +00:00
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#![warn(clippy::expl_impl_clone_on_copy)]
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2016-01-21 17:19:02 +00:00
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2016-01-24 12:56:23 +00:00
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#[derive(Copy)]
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struct Qux;
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impl Clone for Qux {
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2023-07-28 19:35:48 +00:00
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//~^ ERROR: you are implementing `Clone` explicitly on a `Copy` type
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2018-12-09 22:26:16 +00:00
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fn clone(&self) -> Self {
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Qux
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}
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2016-01-24 12:56:23 +00:00
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}
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2016-08-28 17:43:55 +00:00
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// looks like unions don't support deriving Clone for now
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#[derive(Copy)]
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union Union {
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a: u8,
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}
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impl Clone for Union {
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fn clone(&self) -> Self {
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2018-12-09 22:26:16 +00:00
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Union { a: 42 }
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2016-08-28 17:43:55 +00:00
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}
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}
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2016-02-15 12:25:29 +00:00
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// See #666
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#[derive(Copy)]
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struct Lt<'a> {
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a: &'a u8,
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}
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impl<'a> Clone for Lt<'a> {
|
2023-07-28 19:35:48 +00:00
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//~^ ERROR: you are implementing `Clone` explicitly on a `Copy` type
|
2018-12-09 22:26:16 +00:00
|
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|
fn clone(&self) -> Self {
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unimplemented!()
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}
|
2016-02-15 12:25:29 +00:00
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}
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2016-01-24 12:56:23 +00:00
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#[derive(Copy)]
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struct BigArray {
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a: [u8; 65],
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}
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impl Clone for BigArray {
|
2023-07-28 19:35:48 +00:00
|
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|
//~^ ERROR: you are implementing `Clone` explicitly on a `Copy` type
|
2018-12-09 22:26:16 +00:00
|
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|
fn clone(&self) -> Self {
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|
|
unimplemented!()
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}
|
2016-01-24 12:56:23 +00:00
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}
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#[derive(Copy)]
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|
struct FnPtr {
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a: fn() -> !,
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}
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impl Clone for FnPtr {
|
2023-07-28 19:35:48 +00:00
|
|
|
//~^ ERROR: you are implementing `Clone` explicitly on a `Copy` type
|
2018-12-09 22:26:16 +00:00
|
|
|
fn clone(&self) -> Self {
|
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|
|
unimplemented!()
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|
}
|
2016-01-24 12:56:23 +00:00
|
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|
}
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|
2021-04-08 15:50:13 +00:00
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|
// Ok, Clone trait impl doesn't have constrained generics.
|
2016-01-24 12:56:23 +00:00
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|
#[derive(Copy)]
|
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|
|
struct Generic<T> {
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|
a: T,
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|
}
|
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|
|
impl<T> Clone for Generic<T> {
|
2018-12-09 22:26:16 +00:00
|
|
|
fn clone(&self) -> Self {
|
|
|
|
unimplemented!()
|
|
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|
}
|
2016-01-24 12:56:23 +00:00
|
|
|
}
|
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|
2021-04-08 15:50:13 +00:00
|
|
|
#[derive(Copy)]
|
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|
|
struct Generic2<T>(T);
|
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|
|
impl<T: Clone> Clone for Generic2<T> {
|
2023-07-28 19:35:48 +00:00
|
|
|
//~^ ERROR: you are implementing `Clone` explicitly on a `Copy` type
|
2021-04-08 15:50:13 +00:00
|
|
|
fn clone(&self) -> Self {
|
|
|
|
Self(self.0.clone())
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
// Ok, Clone trait impl doesn't have constrained generics.
|
|
|
|
#[derive(Copy)]
|
|
|
|
struct GenericRef<'a, T, U>(T, &'a U);
|
|
|
|
impl<T: Clone, U> Clone for GenericRef<'_, T, U> {
|
|
|
|
fn clone(&self) -> Self {
|
|
|
|
Self(self.0.clone(), self.1)
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
2023-01-11 17:25:47 +00:00
|
|
|
// https://github.com/rust-lang/rust-clippy/issues/10188
|
|
|
|
#[repr(packed)]
|
|
|
|
#[derive(Copy)]
|
|
|
|
struct Packed<T>(T);
|
|
|
|
|
|
|
|
impl<T: Copy> Clone for Packed<T> {
|
|
|
|
fn clone(&self) -> Self {
|
|
|
|
*self
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
2016-01-21 17:19:02 +00:00
|
|
|
fn main() {}
|