src/tools/clippy/src/docs/undropped_manually_drops.txt

   1 ### What it does
   2 Prevents the safe `std::mem::drop` function from being called on `std::mem::ManuallyDrop`.
   3
   4 ### Why is this bad?
   5 The safe `drop` function does not drop the inner value of a `ManuallyDrop`.
   6
   7 ### Known problems
   8 Does not catch cases if the user binds `std::mem::drop`
   9 to a different name and calls it that way.
  10
  11 ### Example
  12 ```
  13 struct S;
  14 drop(std::mem::ManuallyDrop::new(S));
  15 ```
  16 Use instead:
  17 ```
  18 struct S;
  19 unsafe {
  20     std::mem::ManuallyDrop::drop(&mut std::mem::ManuallyDrop::new(S));
  21 }
  22 ```