Add 'Allocator' template parameter to vector template specializations

src/graph/graph_util.hh

@@ -560,10 +560,10 @@ struct hash<std::pair<T1, T2>>
     }
 };
 
-template <class Value>
-struct hash<vector<Value>>
+template <class Value, class Allocator>
+struct hash<vector<Value, Allocator>>
 {
-    size_t operator()(const vector<Value>& v) const
+    size_t operator()(const vector<Value, Allocator>& v) const
     {
         size_t seed = 0;
         for (const auto& x : v)

src/graph/hash_map_wrap.hh

@@ -53,10 +53,10 @@ struct empty_key
     }
 };
 
-template <class Key>
-struct empty_key<std::vector<Key>>
+template <class Key, class Allocator>
+struct empty_key<std::vector<Key, Allocator>>
 {
-    static std::vector<Key> get()
+    static std::vector<Key, Allocator> get()
     {
         return { empty_key<Key>::get() };
     }
@@ -118,10 +118,10 @@ struct deleted_key
     }
 };
 
-template <class Key>
-struct deleted_key<std::vector<Key>>
+template <class Key, class Allocator>
+struct deleted_key<std::vector<Key, Allocator>>
 {
-    static std::vector<Key> get()
+    static std::vector<Key, Allocator> get()
     {
         return { deleted_key<Key>::get() };
     }