mirror of
https://github.com/rust-lang/rust.git
synced 2024-10-31 22:41:50 +00:00
40 lines
1.5 KiB
Plaintext
40 lines
1.5 KiB
Plaintext
error[E0740]: unions cannot contain fields that may need dropping
|
|
--> $DIR/union-with-drop-fields.rs:11:5
|
|
|
|
|
LL | a: String,
|
|
| ^^^^^^^^^
|
|
|
|
|
= note: a type is guaranteed not to need dropping when it implements `Copy`, or when it is the special `ManuallyDrop<_>` type
|
|
help: when the type does not implement `Copy`, wrap it inside a `ManuallyDrop<_>` and ensure it is manually dropped
|
|
|
|
|
LL | a: std::mem::ManuallyDrop<String>,
|
|
| +++++++++++++++++++++++ +
|
|
|
|
error[E0740]: unions cannot contain fields that may need dropping
|
|
--> $DIR/union-with-drop-fields.rs:19:5
|
|
|
|
|
LL | a: S,
|
|
| ^^^^
|
|
|
|
|
= note: a type is guaranteed not to need dropping when it implements `Copy`, or when it is the special `ManuallyDrop<_>` type
|
|
help: when the type does not implement `Copy`, wrap it inside a `ManuallyDrop<_>` and ensure it is manually dropped
|
|
|
|
|
LL | a: std::mem::ManuallyDrop<S>,
|
|
| +++++++++++++++++++++++ +
|
|
|
|
error[E0740]: unions cannot contain fields that may need dropping
|
|
--> $DIR/union-with-drop-fields.rs:24:5
|
|
|
|
|
LL | a: T,
|
|
| ^^^^
|
|
|
|
|
= note: a type is guaranteed not to need dropping when it implements `Copy`, or when it is the special `ManuallyDrop<_>` type
|
|
help: when the type does not implement `Copy`, wrap it inside a `ManuallyDrop<_>` and ensure it is manually dropped
|
|
|
|
|
LL | a: std::mem::ManuallyDrop<T>,
|
|
| +++++++++++++++++++++++ +
|
|
|
|
error: aborting due to 3 previous errors
|
|
|
|
For more information about this error, try `rustc --explain E0740`.
|