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20 Memory management library [mem]

20.2 Memory [memory]

20.2.11 addressof [specialized.addressof]

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template<class T> constexpr T* addressof(T& r) noexcept;
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Returns: The actual address of the object or function referenced by r, even in the presence of an overloaded operator&.
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Remarks: An expression addressof(E) is a constant subexpression ([defns.const.subexpr]) if E is an lvalue constant subexpression.