From bdfb342ec893898c6d9d9896e0fab65fac29c0eb Mon Sep 17 00:00:00 2001
From: Alex Duan <417921451@qq.com>
Date: Fri, 17 Feb 2023 14:44:00 +0800
Subject: [PATCH] fix: free thread save memory before set null

---
 tools/shell/src/shellAuto.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/tools/shell/src/shellAuto.c b/tools/shell/src/shellAuto.c
index 3589558d64..480421b5c0 100644
--- a/tools/shell/src/shellAuto.c
+++ b/tools/shell/src/shellAuto.c
@@ -788,6 +788,9 @@ int writeVarNames(int type, TAOS_RES* tres) {
 
 void setThreadNull(int type) {
   taosThreadMutexLock(&tiresMutex);
+  if(threads[type]) {
+    taosMemoryFree(threads[type]);
+  }
   threads[type] = NULL;
   taosThreadMutexUnlock(&tiresMutex);
 }