diff --git a/contrib/libc++/include/__bit_reference b/contrib/libc++/include/__bit_reference
index 4938f44608f1..5659ed068246 100644
--- a/contrib/libc++/include/__bit_reference
+++ b/contrib/libc++/include/__bit_reference
@@ -906,7 +906,6 @@ rotate(__bit_iterator<_Cp, false> __first, __bit_iterator<_Cp, false> __middle,
 {
     typedef __bit_iterator<_Cp, false> _I1;
     typedef  typename _I1::difference_type difference_type;
-    typedef typename _I1::__storage_type __storage_type;
     difference_type __d1 = __middle - __first;
     difference_type __d2 = __last - __middle;
     _I1 __r = __first + __d2;
diff --git a/contrib/libc++/include/algorithm b/contrib/libc++/include/algorithm
index 02cbc816f61f..61b014387806 100644
--- a/contrib/libc++/include/algorithm
+++ b/contrib/libc++/include/algorithm
@@ -4365,8 +4365,6 @@ __buffered_inplace_merge(_BidirectionalIterator __first, _BidirectionalIterator
                 typename iterator_traits<_BidirectionalIterator>::value_type* __buff)
 {
     typedef typename iterator_traits<_BidirectionalIterator>::value_type value_type;
-    typedef typename iterator_traits<_BidirectionalIterator>::difference_type difference_type;
-    typedef typename iterator_traits<_BidirectionalIterator>::pointer pointer;
     __destruct_n __d(0);
     unique_ptr<value_type, __destruct_n&> __h2(__buff, __d);
     if (__len1 <= __len2)
@@ -4400,7 +4398,6 @@ __inplace_merge(_BidirectionalIterator __first, _BidirectionalIterator __middle,
                                  typename iterator_traits<_BidirectionalIterator>::difference_type __len2,
                 typename iterator_traits<_BidirectionalIterator>::value_type* __buff, ptrdiff_t __buff_size)
 {
-    typedef typename iterator_traits<_BidirectionalIterator>::value_type value_type;
     typedef typename iterator_traits<_BidirectionalIterator>::difference_type difference_type;
     while (true)
     {
@@ -4799,7 +4796,6 @@ void
 __sift_up(_RandomAccessIterator __first, _RandomAccessIterator __last, _Compare __comp,
           typename iterator_traits<_RandomAccessIterator>::difference_type __len)
 {
-    typedef typename iterator_traits<_RandomAccessIterator>::difference_type difference_type;
     typedef typename iterator_traits<_RandomAccessIterator>::value_type value_type;
     if (__len > 1)
     {