diff options
Diffstat (limited to 'tests/ui/union/field_checks.stderr')
| -rw-r--r-- | tests/ui/union/field_checks.stderr | 30 |
1 files changed, 15 insertions, 15 deletions
diff --git a/tests/ui/union/field_checks.stderr b/tests/ui/union/field_checks.stderr index 1f97e97ac..32407a749 100644 --- a/tests/ui/union/field_checks.stderr +++ b/tests/ui/union/field_checks.stderr @@ -1,59 +1,59 @@ -error[E0740]: unions cannot contain fields that may need dropping +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: 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 + = 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]: unions cannot contain fields that may need dropping +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: 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 + = 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]: unions cannot contain fields that may need dropping +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: 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 + = 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]: unions cannot contain fields that may need dropping +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: 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 + = 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]: unions cannot contain fields that may need dropping +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: 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 + = 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]>, | +++++++++++++++++++++++ + |