From 45e471930edfb78a823c33f68a08c652132fd4f7 Mon Sep 17 00:00:00 2001
From: Hongze Cheng <hzcheng@taosdata.com>
Date: Wed, 16 Mar 2022 10:22:52 +0000
Subject: [PATCH] more TDB

---
 source/libs/tdb/src/db/tdbBtree.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/source/libs/tdb/src/db/tdbBtree.c b/source/libs/tdb/src/db/tdbBtree.c
index 77892eb0cc..121ded5863 100644
--- a/source/libs/tdb/src/db/tdbBtree.c
+++ b/source/libs/tdb/src/db/tdbBtree.c
@@ -459,8 +459,8 @@ static int tdbBtreeCopyPageContent(SPage *pFrom, SPage *pTo) {
 
   pTo->pFreeStart = pTo->pCellIdx + nCells * pFrom->szOffset;
   memcpy(pTo->pCellIdx, pFrom->pCellIdx, nCells * pFrom->szOffset);
-  pTo->pFreeEnd = (u8 *)pTo->pPageFtr - (pFrom->pFreeEnd - (u8 *)(pFrom->pPageFtr));
-  memcpy(pTo->pFreeEnd, pFrom->pFreeEnd, (pFrom->pFreeEnd - (u8 *)pFrom->pPageFtr));
+  pTo->pFreeEnd = (u8 *)pTo->pPageFtr - (u8 *)(pFrom->pPageFtr) + pFrom->pFreeEnd;
+  memcpy(pTo->pFreeEnd, pFrom->pFreeEnd, (u8 *)pFrom->pPageFtr - pFrom->pFreeEnd);
 
   TDB_PAGE_NCELLS_SET(pTo, nCells);
   TDB_PAGE_CCELLS_SET(pTo, cCells);