20 General utilities library [utilities]

20.10 Memory [memory]

20.10.3 Pointer traits [pointer.traits]

20.10.3.2 Member functions [pointer.traits.functions]

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static pointer pointer_traits::pointer_to(see below r); static constexpr pointer pointer_traits<T*>::pointer_to(see below r) noexcept;
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Remarks: If element_­type is cv void, the type of r is unspecified; otherwise, it is element_­type&.
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Returns: The first member function returns a pointer to r obtained by calling Ptr​::​pointer_­to(r) through which indirection is valid; an instantiation of this function is ill-formed if Ptr does not have a matching pointer_­to static member function.
The second member function returns addressof(r).