Index: boost/unordered/detail/equivalent.hpp
===================================================================
--- boost/unordered/detail/equivalent.hpp	(revision 80833)
+++ boost/unordered/detail/equivalent.hpp	(working copy)
@@ -676,9 +676,9 @@
 
                     if(begin == group2) {
                         link_pointer end1 = group1->group_prev_;
-                        link_pointer end2 = group2->group_prev_;
+                        link_pointer end2 = end->group_prev_;
                         group1->group_prev_ = end2;
-                        group2->group_prev_ = end1;
+                        end->group_prev_ = end1;
                     }
                 }
             }
Index: boost/unordered/detail/table.hpp
===================================================================
--- boost/unordered/detail/table.hpp	(revision 80833)
+++ boost/unordered/detail/table.hpp	(working copy)
@@ -618,7 +618,16 @@
             {
                 for(;;) {
                     n = static_cast<node_pointer>(n->next_);
-                    if (n == end) return;
+                    if (n == end) {
+                        if (n) {
+                            std::size_t new_bucket_index =
+                                policy::to_bucket(bucket_count_, n->hash_);
+                            if (bucket_index != new_bucket_index) {
+                                get_bucket(new_bucket_index)->next_ = prev;
+                            }
+                        }
+                        return;
+                    }
 
                     std::size_t new_bucket_index =
                         policy::to_bucket(bucket_count_, n->hash_);