cppdraft_translate/cppdraft/optional/ref/expos.md

[optional.ref.expos]

22 General utilities library [utilities]

22.5 Optional objects [optional]

22.5.4 Partial specialization of optional for reference types [optional.optional.ref]

22.5.4.9 Exposition only helper functions [optional.ref.expos]

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template<class U> constexpr void convert-ref-init-val(U&& u); // exposition only

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Effects: Creates a variable r as if by T& r(std​::​forward(u)); and then initializes val with addressof(r).