mirror of
https://github.com/rust-lang/rust
synced 2024-09-06 01:11:17 +00:00
d68f2a6b71
```
error[E0382]: use of moved value: `t`
--> $DIR/use_of_moved_value_copy_suggestions.rs:7:9
|
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
|
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
|
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
|
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;
| +
```
14 lines
485 B
Rust
14 lines
485 B
Rust
struct NoCopy; //~ NOTE if `NoCopy` implemented `Clone`, you could clone the value
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//~^ NOTE consider implementing `Clone` for this type
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fn main() {
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let x = NoCopy;
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//~^ NOTE move occurs because `x` has type `NoCopy`
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let f = move || { let y = x; };
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//~^ NOTE value moved into closure here
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//~| NOTE variable moved due to use in closure
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//~| NOTE you could clone this value
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let z = x;
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//~^ ERROR use of moved value: `x`
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//~| NOTE value used here after move
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}
|