std::destroying_delete_t, std::destroying_delete

From cppreference.com

Defined in header `<new>`
`struct destroying_delete_t { explicit destroying_delete_t() = default; };`	(1)	(since C++20)
`inline constexpr destroying_delete_t destroying_delete{};`	(2)	(since C++20)

Tag type used to identify the destroying delete form of operator delete.