From f7c20f6c0de0b80aaf88c57118d1302b729a31fc Mon Sep 17 00:00:00 2001
From: Ganlin Zhao <ganlinzhao@hotmail.com>
Date: Mon, 13 Jun 2022 16:14:16 +0800
Subject: [PATCH] fix invalid read-write caused by getFuncEnv

---
 source/libs/function/src/builtinsimpl.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/source/libs/function/src/builtinsimpl.c b/source/libs/function/src/builtinsimpl.c
index 580df07cf8..2a1974ede9 100644
--- a/source/libs/function/src/builtinsimpl.c
+++ b/source/libs/function/src/builtinsimpl.c
@@ -2662,7 +2662,7 @@ bool getTopBotFuncEnv(SFunctionNode* pFunc, SFuncExecEnv* pEnv) {
 
 bool getTopBotMergeFuncEnv(SFunctionNode* pFunc, SFuncExecEnv* pEnv) {
   //intermediate result is binary and length contains VAR header size
-  pEnv->calcMemSize = pFunc->node.resType.bytes - VARSTR_HEADER_SIZE;
+  pEnv->calcMemSize = pFunc->node.resType.bytes;
   return true;
 }