2024-01-13 11:09:33 -06:00
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error[E0507]: cannot move out of `*self` which is behind a mutable reference
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--> $DIR/issue-119915-bad-clone-suggestion.rs:23:18
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LL | unsafe { self.change() }
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| ^^^^ -------- `*self` moved due to this method call
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| |
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| move occurs because `*self` has type `Example<E, NoLifetime>`, which does not implement the `Copy` trait
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note: `Example::<E, FakeParam>::change` takes ownership of the receiver `self`, which moves `*self`
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--> $DIR/issue-119915-bad-clone-suggestion.rs:16:36
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LL | unsafe fn change<NewFakeParam>(self) -> Example<E, NewFakeParam> {
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| ^^^^
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2024-03-17 16:25:38 -05:00
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note: if `Example<E, NoLifetime>` implemented `Clone`, you could clone the value
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--> $DIR/issue-119915-bad-clone-suggestion.rs:3:1
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LL | struct Example<E, FakeParam>(PhantomData<(fn(E), fn(FakeParam))>);
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Mention when type parameter could be `Clone`
```
error[E0382]: use of moved value: `t`
--> $DIR/use_of_moved_value_copy_suggestions.rs:7:9
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LL | fn duplicate_t<T>(t: T) -> (T, T) {
| - move occurs because `t` has type `T`, which does not implement the `Copy` trait
...
LL | (t, t)
| - ^ value used here after move
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| value moved here
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help: if `T` implemented `Clone`, you could clone the value
--> $DIR/use_of_moved_value_copy_suggestions.rs:4:16
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LL | fn duplicate_t<T>(t: T) -> (T, T) {
| ^ consider constraining this type parameter with `Clone`
...
LL | (t, t)
| - you could clone this value
help: consider restricting type parameter `T`
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LL | fn duplicate_t<T: Copy>(t: T) -> (T, T) {
| ++++++
```
The `help` is new. On ADTs, we also extend the output with span labels:
```
error[E0507]: cannot move out of static item `FOO`
--> $DIR/issue-17718-static-move.rs:6:14
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LL | let _a = FOO;
| ^^^ move occurs because `FOO` has type `Foo`, which does not implement the `Copy` trait
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note: if `Foo` implemented `Clone`, you could clone the value
--> $DIR/issue-17718-static-move.rs:1:1
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LL | struct Foo;
| ^^^^^^^^^^ consider implementing `Clone` for this type
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LL | let _a = FOO;
| --- you could clone this value
help: consider borrowing here
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LL | let _a = &FOO;
| +
```
2024-04-18 17:18:19 -05:00
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| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ consider implementing `Clone` for this type
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...
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LL | unsafe { self.change() }
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| ---- you could clone this value
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2024-01-13 11:09:33 -06:00
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error: aborting due to 1 previous error
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For more information about this error, try `rustc --explain E0507`.
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