80 :
public std::_Rb_tree<_Key, _Value, _KeyOfValue, _Compare, _Alloc>
82 typedef std::_Rb_tree<_Key, _Value, _KeyOfValue, _Compare, _Alloc> _Base;
83 typedef typename _Base::allocator_type allocator_type;
85 rb_tree(
const _Compare& __comp = _Compare(),
86 const allocator_type& __a = allocator_type())
87 : _Base(__comp, __a) { }