[fix] 修复 fastjson2 在反序列化列表对象存在引用关系时，存在数据数组越界或者数据丢失的问题 (#2149)

* [fix] 修复 fastjson2 在反序列化列表对象存在引用关系时，存在数据数组越界或者数据丢失的问题
alibaba · Jan 3, 2024 · a32e68b · a32e68b
1 parent ee93703
commit a32e68b
Showing 1 changed file with 5 additions and 1 deletion.
diff --git a/core/src/main/java/com/alibaba/fastjson2/JSONReader.java b/core/src/main/java/com/alibaba/fastjson2/JSONReader.java
@@ -451,7 +451,11 @@ public final void handleResolveTasks(Object root) {
                         if (index == list.size()) {
                             list.add(fieldValue);
                         } else {
-                            list.set(index, fieldValue);
+                            if (index < list.size() && list.get(index) == null) {
+                                list.set(index, fieldValue);
+                            } else {
+                                list.add(index, fieldValue);
+                            }
                         }
                         continue;
                     }