diff --git a/mindspore/ccsrc/pipeline/static_analysis/prim.cc b/mindspore/ccsrc/pipeline/static_analysis/prim.cc
index a0bcaab5b7eea8f070ec604ae860b115cca57c70..800e3a8cfbe6f372af9915da984ef48d1ac83bb8 100644
--- a/mindspore/ccsrc/pipeline/static_analysis/prim.cc
+++ b/mindspore/ccsrc/pipeline/static_analysis/prim.cc
@@ -274,14 +274,15 @@ AnfNodePtr MixedPrecisionCastHelper(AnfNodePtr source_node, AbstractBasePtr node
   } else if (node_type->isa<AbstractTuple>()) {
     auto x = node_type->cast<AbstractTuplePtr>();
     auto &items = x->elements();
-    std::size_t size = items.size();
     std::vector<AnfNodePtr> nodes;
     nodes.emplace_back(NewValueNode(prim::kPrimMakeTuple));
-    for (int i = 0; i < SizeToInt(size); i++) {
+    int idx = 0;
+    for (const auto &item : items) {
       AnfNodePtr tuple_node =
-        func_graph->NewCNode({NewValueNode(prim::kPrimTupleGetItem), source_node, NewValueNode(i)});
-      AnfNodePtr node = MixedPrecisionCastHelper(tuple_node, items[i], target_type, func_graph);
+        func_graph->NewCNode({NewValueNode(prim::kPrimTupleGetItem), source_node, NewValueNode(idx)});
+      AnfNodePtr node = MixedPrecisionCastHelper(tuple_node, item, target_type, func_graph);
       nodes.emplace_back(node);
+      ++idx;
     }
     target_node = func_graph->NewCNode(nodes);
   }
diff --git a/mindspore/ccsrc/utils/union_find_set.h b/mindspore/ccsrc/utils/union_find_set.h
index 1c98c73b9c539af7a18038c62b43982e46125d60..81529c8bcf185e55d323366a49958c878d2acbf4 100644
--- a/mindspore/ccsrc/utils/union_find_set.h
+++ b/mindspore/ccsrc/utils/union_find_set.h
@@ -27,6 +27,7 @@ template <class T>
 class UnionFindSet {
  public:
   UnionFindSet() : union_find_set_() {}
+  ~UnionFindSet() = default;
   void Add(const T &elem) {
     if (union_find_set_.find(elem) != union_find_set_.end()) {
       return;