From 5c97cd8ddab62c066211ec1cd61f9cbd55dca791 Mon Sep 17 00:00:00 2001
From: Minglei Jin <mljin@taosdata.com>
Date: Thu, 10 Mar 2022 17:40:36 +0800
Subject: [PATCH] [TS-1306]<fix>: fix endless loop with utf-8 replacement
 character

---
 src/kit/shell/src/shellEngine.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/src/kit/shell/src/shellEngine.c b/src/kit/shell/src/shellEngine.c
index 9f328a377321..028643446f71 100644
--- a/src/kit/shell/src/shellEngine.c
+++ b/src/kit/shell/src/shellEngine.c
@@ -545,6 +545,9 @@ static void shellPrintNChar(const char *str, int length, int width) {
     if (bytes <= 0) {
       break;
     }
+    if (pos + bytes > length) {
+      break;
+    }
     int w = 0;
 #ifdef WINDOWS
     w = bytes;
@@ -555,11 +558,11 @@ static void shellPrintNChar(const char *str, int length, int width) {
       w = wcwidth(wc);
     }
 #endif
+    pos += bytes;
     if (w <= 0) {
       continue;
     }
 
-    pos += bytes;
     if (pos > length) {
       break;
     }