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error[E0740]: field must implement `Copy` or be wrapped in `ManuallyDrop<...>` to be used in a union
--> $DIR/union-with-drop-fields.rs:8:5
|
LL | a: String,
| ^^^^^^^^^
|
= note: union fields must not have drop side-effects, which is currently enforced via either `Copy` or `ManuallyDrop<...>`
help: wrap the field type in `ManuallyDrop<...>`
|
LL | a: std::mem::ManuallyDrop<String>,
| +++++++++++++++++++++++ +
error[E0740]: field must implement `Copy` or be wrapped in `ManuallyDrop<...>` to be used in a union
--> $DIR/union-with-drop-fields.rs:16:5
|
LL | a: S,
| ^^^^
|
= note: union fields must not have drop side-effects, which is currently enforced via either `Copy` or `ManuallyDrop<...>`
help: wrap the field type in `ManuallyDrop<...>`
|
LL | a: std::mem::ManuallyDrop<S>,
| +++++++++++++++++++++++ +
error[E0740]: field must implement `Copy` or be wrapped in `ManuallyDrop<...>` to be used in a union
--> $DIR/union-with-drop-fields.rs:21:5
|
LL | a: T,
| ^^^^
|
= note: union fields must not have drop side-effects, which is currently enforced via either `Copy` or `ManuallyDrop<...>`
help: wrap the field type in `ManuallyDrop<...>`
|
LL | a: std::mem::ManuallyDrop<T>,
| +++++++++++++++++++++++ +
error: aborting due to 3 previous errors
For more information about this error, try `rustc --explain E0740`.
|
