namespace std {
	    template <class ForwIter, class Size, class T>
	    void uninitialized_fill_n (ForwIter beg, Size num,
	                            const T& value)
	    {
	        typedef typename iterator_traits<ForwIter>::value_type VT;
	        ForwIter save(beg);
	        try {
	            for (; num--; ++beg) {
	                new (static_cast<void*>(&*beg))VT(value);
	            }
	        }
	        catch (...) {
	            for (; save!=beg; ++save) {
	                save->~VT();
	            }
	            throw;
	        }
	    }
	}