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|
error[E0740]: field must implement `Copy` or be wrapped in `ManuallyDrop<...>` to be used in a union
--> $DIR/field_checks.rs:24:5
|
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/field_checks.rs:28:5
|
LL | a: std::cell::RefCell<i32>,
| ^^^^^^^^^^^^^^^^^^^^^^^^^^
|
= 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<std::cell::RefCell<i32>>,
| +++++++++++++++++++++++ +
error[E0740]: field must implement `Copy` or be wrapped in `ManuallyDrop<...>` to be used in a union
--> $DIR/field_checks.rs:32:5
|
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[E0740]: field must implement `Copy` or be wrapped in `ManuallyDrop<...>` to be used in a union
--> $DIR/field_checks.rs:44:5
|
LL | nest: U5,
| ^^^^^^^^
|
= 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 | nest: std::mem::ManuallyDrop<U5>,
| +++++++++++++++++++++++ +
error[E0740]: field must implement `Copy` or be wrapped in `ManuallyDrop<...>` to be used in a union
--> $DIR/field_checks.rs:48:5
|
LL | nest: [U5; 0],
| ^^^^^^^^^^^^^
|
= 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 | nest: std::mem::ManuallyDrop<[U5; 0]>,
| +++++++++++++++++++++++ +
error: aborting due to 5 previous errors
For more information about this error, try `rustc --explain E0740`.
|
