64 lines
2.5 KiB
Plaintext
64 lines
2.5 KiB
Plaintext
error[E0740]: unions cannot contain fields that may need dropping
|
|
--> $DIR/field_checks.rs:24:5
|
|
|
|
|
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/field_checks.rs:28:5
|
|
|
|
|
LL | a: std::cell::RefCell<i32>,
|
|
| ^^^^^^^^^^^^^^^^^^^^^^^^^^
|
|
|
|
|
= 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<std::cell::RefCell<i32>>,
|
|
| +++++++++++++++++++++++ +
|
|
|
|
error[E0740]: unions cannot contain fields that may need dropping
|
|
--> $DIR/field_checks.rs:32:5
|
|
|
|
|
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[E0740]: unions cannot contain fields that may need dropping
|
|
--> $DIR/field_checks.rs:44:5
|
|
|
|
|
LL | nest: U5,
|
|
| ^^^^^^^^
|
|
|
|
|
= 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 | nest: std::mem::ManuallyDrop<U5>,
|
|
| +++++++++++++++++++++++ +
|
|
|
|
error[E0740]: unions cannot contain fields that may need dropping
|
|
--> $DIR/field_checks.rs:48:5
|
|
|
|
|
LL | nest: [U5; 0],
|
|
| ^^^^^^^^^^^^^
|
|
|
|
|
= 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 | nest: std::mem::ManuallyDrop<[U5; 0]>,
|
|
| +++++++++++++++++++++++ +
|
|
|
|
error: aborting due to 5 previous errors
|
|
|
|
For more information about this error, try `rustc --explain E0740`.
|