78 :
public std::_Rb_tree<_Key, _Value, _KeyOfValue, _Compare, _Alloc>
80 typedef std::_Rb_tree<_Key, _Value, _KeyOfValue, _Compare, _Alloc> _Base;
81 typedef typename _Base::allocator_type allocator_type;
83 rb_tree(
const _Compare& __comp = _Compare(),
84 const allocator_type& __a = allocator_type())
85 : _Base(__comp, __a) { }