--- a/src/parallel_execution/RedBlackTree.cbc	Wed Jan 31 19:09:55 2024 +0900
+++ b/src/parallel_execution/RedBlackTree.cbc	Sun Feb 04 12:24:25 2024 +0900
@@ -102,7 +102,7 @@
     tree->copied = 0;
 
     struct Stack* toStack = tree->toStack;
-    struct Node* newNode = &ALLOCATE(context, Node)->Node;
+    struct Node* newNode = new Node();
     newNode->key = tree->current->key;
     newNode->value = (union Data*)new Integer();
     ((Integer*)newNode->value)->value = ((Integer*)tree->current->value)->value;
@@ -116,7 +116,6 @@
 // current->leftがある場合、コピーしてから降りる。
 //   ない場合はrightを見に行く(rightDown)
 //
-
 __code leftDown(struct RedBlackTree* tree) {
     printf("leftDown\n");
     struct Stack* toStack = tree->toStack;
@@ -132,7 +131,7 @@
     }
 
     struct Stack* toStack = tree->toStack;
-    struct Node* newNode = &ALLOCATE(context, Node)->Node;
+    struct Node* newNode = new Node();
     struct Node* data = (Node*)(stack->data);
     newNode->key = tree->current->left->key;
     newNode->value = (union Data*)new Integer();
@@ -209,7 +208,7 @@
     }
 
     struct Stack* toStack = tree->toStack;
-    struct Node* newNode = &ALLOCATE(context, Node)->Node;
+    struct Node* newNode = new Node();
     struct Node* data = (Node*)(stack->data);
     newNode->key = tree->current->right->key;
     newNode->value = (union Data*)new Integer();