From ef075ea963c13eeede75497c18690eda68cdabe4 Mon Sep 17 00:00:00 2001
From: Shuduo Sang <sangshuduo@gmail.com>
Date: Wed, 7 Jul 2021 21:37:42 +0800
Subject: [PATCH] Hotfix/sangshuduo/td 4987 detected by mem sanitizer for
 develop (#6792)

* [TD-4987]<fix>: issues memory sanitizier detected.

* fix mask width issue.

* fix issue memory sanitizer detected.
---
 src/kit/taosdemo/taosdemo.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/src/kit/taosdemo/taosdemo.c b/src/kit/taosdemo/taosdemo.c
index 6513f3e214..9f300102df 100644
--- a/src/kit/taosdemo/taosdemo.c
+++ b/src/kit/taosdemo/taosdemo.c
@@ -5122,13 +5122,13 @@ static int32_t generateStbDataTail(
     } else {
         lenOfRow = getRowDataFromSample(
                   data,
-                  remainderBufLen < MAX_DATA_SIZE ? remainderBufLen : MAX_DATA_SIZE,
+                  (remainderBufLen < MAX_DATA_SIZE)?remainderBufLen:MAX_DATA_SIZE,
                   startTime + superTblInfo->timeStampStep * k,
                   superTblInfo,
                   pSamplePos);
     }
 
-    if (lenOfRow > remainderBufLen) {
+    if ((lenOfRow + 1) > remainderBufLen) {
         break;
     }
 
-- 
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