mirror of
https://github.com/rust-lang/rust
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d68f2a6b71
```
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
| |
| value moved here
|
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`
|
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
|
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
...
LL | let _a = FOO;
| --- you could clone this value
help: consider borrowing here
|
LL | let _a = &FOO;
| +
```
73 lines
2.5 KiB
Plaintext
73 lines
2.5 KiB
Plaintext
error[E0382]: use of moved value: `x`
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--> $DIR/union-move.rs:26:18
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LL | fn test1(x: U1) {
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| - move occurs because `x` has type `U1`, which does not implement the `Copy` trait
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...
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LL | move_out(x.f1_nocopy);
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| ----------- value moved here
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LL | move_out(x.f2_nocopy);
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| ^^^^^^^^^^^ value used here after move
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note: consider changing this parameter type in function `move_out` to borrow instead if owning the value isn't necessary
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--> $DIR/union-move.rs:7:19
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LL | fn move_out<T>(x: T) {}
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| -------- ^ this parameter takes ownership of the value
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| |
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| in this function
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note: if `U1` implemented `Clone`, you could clone the value
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--> $DIR/union-move.rs:9:1
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LL | union U1 {
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| ^^^^^^^^ consider implementing `Clone` for this type
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...
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LL | move_out(x.f1_nocopy);
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| ----------- you could clone this value
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error[E0382]: use of moved value: `x`
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--> $DIR/union-move.rs:42:18
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LL | fn test3(x: U1) {
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| - move occurs because `x` has type `U1`, which does not implement the `Copy` trait
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...
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LL | move_out(x.f2_nocopy);
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| ----------- value moved here
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LL | move_out(x.f3_copy);
|
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| ^^^^^^^^^ value used here after move
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note: consider changing this parameter type in function `move_out` to borrow instead if owning the value isn't necessary
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--> $DIR/union-move.rs:7:19
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LL | fn move_out<T>(x: T) {}
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| -------- ^ this parameter takes ownership of the value
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| |
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| in this function
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note: if `U1` implemented `Clone`, you could clone the value
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--> $DIR/union-move.rs:9:1
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LL | union U1 {
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| ^^^^^^^^ consider implementing `Clone` for this type
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...
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LL | move_out(x.f2_nocopy);
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| ----------- you could clone this value
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error[E0509]: cannot move out of type `U2`, which implements the `Drop` trait
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--> $DIR/union-move.rs:49:18
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LL | move_out(x.f1_nocopy);
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| ^^^^^^^^^^^
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| |
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| cannot move out of here
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| move occurs because `x.f1_nocopy` has type `ManuallyDrop<RefCell<i32>>`, which does not implement the `Copy` trait
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help: consider cloning the value if the performance cost is acceptable
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LL | move_out(x.f1_nocopy.clone());
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| ++++++++
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error: aborting due to 3 previous errors
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Some errors have detailed explanations: E0382, E0509.
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For more information about an error, try `rustc --explain E0382`.
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