rniwa wrote:

> I don't understand this. For example, moving a `std::unique_ptr` does not 
> call `operator delete`. Nor does the destruction of the destructor of such a 
> moved-from object.

That is true. But once you've moved `std::unique_ptr`, you're not supposed to 
use/touch that object, or else you're doing use-after-move. For example, you're 
not supposed to access `x` after:
```
std::unique_ptr<Foo> x = make_unique<Foo>();
std::unique_ptr<Foo> y = std::move(x);
```


https://github.com/llvm/llvm-project/pull/184986
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