From cb4661cd91fc6d6f9e81b627967735f7072f901c Mon Sep 17 00:00:00 2001
From: miaoerduo <zhaoyu3210@foxmail.com>
Date: Fri, 3 Apr 2020 14:47:49 +0800
Subject: [PATCH] fix: errors in replacing the first item when array_size is 1,
 and replacing the last item

---
 cJSON.c | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/cJSON.c b/cJSON.c
index cc1c016..23270c4 100644
--- a/cJSON.c
+++ b/cJSON.c
@@ -2313,6 +2313,10 @@ CJSON_PUBLIC(cJSON_bool) cJSON_ReplaceItemViaPointer(cJSON * const parent, cJSON
     }
     if (parent->child == item)
     {
+        if (parent->child->prev == parent->child)
+        {
+            replacement->prev = replacement;
+        }
         parent->child = replacement;
     }
     else
@@ -2324,6 +2328,10 @@ CJSON_PUBLIC(cJSON_bool) cJSON_ReplaceItemViaPointer(cJSON * const parent, cJSON
         {
             replacement->prev->next = replacement;
         }
+        if (replacement->next == NULL)
+        {
+            parent->child->prev = replacement;
+        }
     }
 
     item->next = NULL;