From ff492acbbfb620d2199aaa44f5646fc90d715e92 Mon Sep 17 00:00:00 2001
From: Huo Linhe <linhehuo@gmail.com>
Date: Thu, 24 Jun 2021 11:36:41 +0800
Subject: [PATCH] [TD-4872]<fix>: fix tasodemo buffer overflow with -O3

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

diff --git a/src/kit/taosdemo/taosdemo.c b/src/kit/taosdemo/taosdemo.c
index 33ee2a9bc2..1bb057aa67 100644
--- a/src/kit/taosdemo/taosdemo.c
+++ b/src/kit/taosdemo/taosdemo.c
@@ -5103,7 +5103,7 @@ static int32_t generateStbDataTail(
     } else {
         retLen = getRowDataFromSample(
                   data,
-                  remainderBufLen,
+                  remainderBufLen < MAX_DATA_SIZE ? remainderBufLen : MAX_DATA_SIZE,
                   startTime + superTblInfo->timeStampStep * k,
                   superTblInfo,
                   pSamplePos);
-- 
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