20 Memory management library [mem]

20.2 Memory [memory]

20.2.3 Pointer traits [pointer.traits]

20.2.3.3 Member functions [pointer.traits.functions]

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static constexpr pointer pointer_traits::pointer_to(see below r); static constexpr pointer pointer_traits<T*>::pointer_to(see below r) noexcept;
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Mandates: For the first member function, Ptr​::​pointer_to(r) is well-formed.
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Preconditions: For the first member function, Ptr​::​pointer_to(r) returns a pointer to r through which indirection is valid.
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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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