[queue.cons.alloc]

template<class Alloc> constexpr explicit queue(const Alloc& a);

Effects: Initializes c with a.

template<class Alloc> constexpr queue(const container_type& cont, const Alloc& a);

Effects: Initializes c with cont as the first argument and a as the second argument.

template<class Alloc> constexpr queue(container_type&& cont, const Alloc& a);

Effects: Initializes c with std::move(cont) as the first argument and a as the second argument.

template<class Alloc> constexpr queue(const queue& q, const Alloc& a);

Effects: Initializes c with q.c as the first argument and a as the second argument.

template<class Alloc> constexpr queue(queue&& q, const Alloc& a);

Effects: Initializes c with std::move(q.c) as the first argument and a as the second argument.

template<class InputIterator, class Alloc>
  constexpr queue(InputIterator first, InputIterator last, const Alloc& alloc);

Effects: Initializes c with first as the first argument, last as the second argument, and alloc as the third argument.

template<container-compatible-range<T> R, class Alloc>
  constexpr queue(from_range_t, R&& rg, const Alloc& a);

Effects: Initializes c with ranges::to<Container>(std::forward<R>(rg), a).