Adapt a completion token to capture disposition values to a variable.

template<
    typename CompletionToken,
    typename Disposition>
redirect_disposition_t< decay_t< CompletionToken >, Disposition > redirect_disposition(
    CompletionToken && completion_token,
    Disposition & d);

Remarks

When redirecting to a variable of type std::exception_ptr, other disposition types will be automatically converted to std::exception_ptr.