template< IsFixedSized> struct fixed_sized;
    template< Size> struct capacity;
    template<typename Alloc> struct allocator;
  }
}

  
    template<typename T,  Options> class queue;
  }
}

  
    template<typename T,  Options> class spsc_queue;
  }
}

  
    template<typename T, typename A0, typename A1, typename A2> class stack;
  }
}