From ef7a25fdc3461f7823f8cdc72a5079f9f0355b7d Mon Sep 17 00:00:00 2001
From: Cary Xu <klxu@taosdata.com>
Date: Sat, 2 Jul 2022 16:01:19 +0800
Subject: [PATCH] fix: fix the var data len

---
 source/common/src/trow.c | 10 +++++-----
 1 file changed, 5 insertions(+), 5 deletions(-)

diff --git a/source/common/src/trow.c b/source/common/src/trow.c
index 4158bc4408..b38f29e72e 100644
--- a/source/common/src/trow.c
+++ b/source/common/src/trow.c
@@ -1238,13 +1238,13 @@ int32_t tdSTSRowNew(SArray *pArray, STSchema *pTSchema, STSRow **ppRow) {
           varDataLen += sizeof(VarDataLenT);
           if (pTColumn->type == TSDB_DATA_TYPE_VARCHAR) {
             varDataLen += CHAR_BYTES;
-            if (maxVarDataLen < CHAR_BYTES) {
-              maxVarDataLen = CHAR_BYTES;
+            if (maxVarDataLen < CHAR_BYTES + sizeof(VarDataLenT)) {
+              maxVarDataLen = CHAR_BYTES + sizeof(VarDataLenT);
             }
           } else {
             varDataLen += INT_BYTES;
-            if (maxVarDataLen < INT_BYTES) {
-              maxVarDataLen = INT_BYTES;
+            if (maxVarDataLen < INT_BYTES + sizeof(VarDataLenT)) {
+              maxVarDataLen = INT_BYTES + sizeof(VarDataLenT);
             }
           }
         }
@@ -1263,7 +1263,7 @@ int32_t tdSTSRowNew(SArray *pArray, STSchema *pTSchema, STSRow **ppRow) {
   }
 
   if (maxVarDataLen > 0) {
-    varBuf = taosMemoryMalloc(maxVarDataLen + sizeof(VarDataLenT));
+    varBuf = taosMemoryMalloc(maxVarDataLen);
     if (!varBuf) {
       taosMemoryFreeClear(*ppRow);
       terrno = TSDB_CODE_OUT_OF_MEMORY;
-- 
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