From c6cc433caff1eb937f879c5a2aefbed3d3dced87 Mon Sep 17 00:00:00 2001
From: Haojun Liao <hjliao@taosdata.com>
Date: Sat, 24 Oct 2020 14:44:42 +0800
Subject: [PATCH] [td-1373] fix memory leak

---
 src/query/src/qTsbuf.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/src/query/src/qTsbuf.c b/src/query/src/qTsbuf.c
index eefb0b56a4..42b6e3f6e0 100644
--- a/src/query/src/qTsbuf.c
+++ b/src/query/src/qTsbuf.c
@@ -400,11 +400,11 @@ void tsBufAppend(STSBuf* pTSBuf, int32_t vnodeId, tVariant* tag, const char* pDa
   if ((tVariantCompare(&pTSBuf->block.tag, tag) != 0) && ptsData->len > 0) {
     // new arrived data with different tags value, save current value into disk first
     writeDataToDisk(pTSBuf);
-    tVariantAssign(&pTSBuf->block.tag, tag);
   } else {
     expandBuffer(ptsData, len);
   }
-  
+
+  tVariantAssign(&pTSBuf->block.tag, tag);
   memcpy(ptsData->rawBuf + ptsData->len, pData, (size_t)len);
   
   // todo check return value
-- 
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