From 6b6c9c884e4856f33099e33898252cf4ef3f2c1d Mon Sep 17 00:00:00 2001
From: Alex Duan <417921451@qq.com>
Date: Mon, 28 Oct 2024 16:21:15 +0800
Subject: [PATCH] fix: tstrncpy len must add 1

---
 tools/shell/src/shellAuto.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/tools/shell/src/shellAuto.c b/tools/shell/src/shellAuto.c
index 8ad9e9072b..a3093237cb 100644
--- a/tools/shell/src/shellAuto.c
+++ b/tools/shell/src/shellAuto.c
@@ -1333,8 +1333,8 @@ void printScreen(TAOS* con, SShellCmd* cmd, SWords* match) {
     // append end ';'
     char* p = taosMemoryCalloc(strLen + 8, 1);
     if (p) {
-      tstrncpy(p, str, strLen);
-      tstrncpy(p + strLen, ";", 1);
+      tstrncpy(p, str, strLen + 1);
+      tstrncpy(p + strLen, ";", 1 + 1);
       shellInsertStr(cmd, (char*)p, strLen + 1);
       taosMemoryFree(p);
     } else {