src/libcore/tests/manually_drop.rs

   1 use core::mem::ManuallyDrop;
   2
   3 #[test]
   4 fn smoke() {
   5     struct TypeWithDrop;
   6     impl Drop for TypeWithDrop {
   7         fn drop(&mut self) {
   8             unreachable!("Should not get dropped");
   9         }
  10     }
  11
  12     let x = ManuallyDrop::new(TypeWithDrop);
  13     drop(x);
  14
  15     // also test unsizing
  16     let x: Box<ManuallyDrop<[TypeWithDrop]>> =
  17         Box::new(ManuallyDrop::new([TypeWithDrop, TypeWithDrop]));
  18     drop(x);
  19 }