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.
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