From b9db84586cd29cfbfbed767bec46f624c6555c36 Mon Sep 17 00:00:00 2001
From: wangmm0220 <wangmm0220@gmail.com>
Date: Fri, 30 Jul 2021 02:17:10 +0800
Subject: [PATCH] [TD-5534]<fix>:fix high risk strncpy to tstrncpy

---
 src/client/src/tscSQLParser.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/client/src/tscSQLParser.c b/src/client/src/tscSQLParser.c
index 8be38be504..0a018c863f 100644
--- a/src/client/src/tscSQLParser.c
+++ b/src/client/src/tscSQLParser.c
@@ -8415,7 +8415,7 @@ static int32_t doValidateSubquery(SSqlNode* pSqlNode, int32_t index, SSqlObj* pS
       return invalidOperationMsg(msgBuf, "subquery alias name too long");
     }
 
-    tstrncpy(pTableMetaInfo1->aliasName, subInfo->aliasName.z, sizeof(pTableMetaInfo1->aliasName));
+    tstrncpy(pTableMetaInfo1->aliasName, subInfo->aliasName.z, subInfo->aliasName.n + 1);
   }
 
   taosArrayPush(pQueryInfo->pUpstream, &pSub);
-- 
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