src/test/ui/union/union-with-drop-fields.mirunsafeck.stderr

   1 error[E0740]: unions cannot contain fields that may need dropping
   2   --> $DIR/union-with-drop-fields.rs:11:5
   3    |
   4 LL |     a: String,
   5    |     ^^^^^^^^^
   6    |
   7    = note: a type is guaranteed not to need dropping when it implements `Copy`, or when it is the special `ManuallyDrop<_>` type
   8 help: when the type does not implement `Copy`, wrap it inside a `ManuallyDrop<_>` and ensure it is manually dropped
   9    |
  10 LL |     a: std::mem::ManuallyDrop<String>,
  11    |        +++++++++++++++++++++++      +
  12
  13 error[E0740]: unions cannot contain fields that may need dropping
  14   --> $DIR/union-with-drop-fields.rs:19:5
  15    |
  16 LL |     a: S,
  17    |     ^^^^
  18    |
  19    = note: a type is guaranteed not to need dropping when it implements `Copy`, or when it is the special `ManuallyDrop<_>` type
  20 help: when the type does not implement `Copy`, wrap it inside a `ManuallyDrop<_>` and ensure it is manually dropped
  21    |
  22 LL |     a: std::mem::ManuallyDrop<S>,
  23    |        +++++++++++++++++++++++ +
  24
  25 error[E0740]: unions cannot contain fields that may need dropping
  26   --> $DIR/union-with-drop-fields.rs:24:5
  27    |
  28 LL |     a: T,
  29    |     ^^^^
  30    |
  31    = note: a type is guaranteed not to need dropping when it implements `Copy`, or when it is the special `ManuallyDrop<_>` type
  32 help: when the type does not implement `Copy`, wrap it inside a `ManuallyDrop<_>` and ensure it is manually dropped
  33    |
  34 LL |     a: std::mem::ManuallyDrop<T>,
  35    |        +++++++++++++++++++++++ +
  36
  37 error: aborting due to 3 previous errors
  38
  39 For more information about this error, try `rustc --explain E0740`.