22 Containers library [containers]

22.6 Container adaptors [container.adaptors]

22.6.4 Class template queue [queue]

22.6.4.3 Constructors with allocators [queue.cons.alloc]

If uses_­allocator_­v<container_­type, Alloc> is false the constructors in this subclause shall not participate in overload resolution.
template<class Alloc> explicit queue(const Alloc& a);
Effects: Initializes c with a.
template<class Alloc> 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> 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> 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> queue(queue&& q, const Alloc& a);
Effects: Initializes c with std​::​move(q.c) as the first argument and a as the second argument.