23 General utilities library [utilities]

23.11 Smart pointers [smartptr]

23.11.2 Shared-ownership pointers [util.smartptr]

23.11.2.2 Class template shared_ptr [util.smartptr.shared]

23.11.2.2.10 get_deleter [util.smartptr.getdeleter]

template<class D, class T>
  D* get_deleter(const shared_ptr<T>& p) noexcept;

Returns: If p owns a deleter d of type cv-unqualified D, returns addressof(d); otherwise returns nullptr.

The returned pointer remains valid as long as there exists a shared_ptr instance that owns d.

[ Note

:

It is unspecified whether the pointer remains valid longer than that.

This can happen if the implementation doesn't destroy the deleter until all weak_ptr instances that share ownership with p have been destroyed.

— end note

]