From ad8bc4c687e22b7180414895d650a16183048d09 Mon Sep 17 00:00:00 2001
From: slzhou <shenglian_zhou@163.com>
Date: Tue, 1 Nov 2022 14:55:04 +0800
Subject: [PATCH] fix: fix address sanitizer error

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

diff --git a/source/libs/function/src/tudf.c b/source/libs/function/src/tudf.c
index 459ee583a4..d86bf15d10 100644
--- a/source/libs/function/src/tudf.c
+++ b/source/libs/function/src/tudf.c
@@ -130,7 +130,7 @@ static int32_t udfSpawnUdfd(SUdfdData *pData) {
   size_t udfdLdLibPathLen = strlen(tsUdfdLdLibPath);
   strncpy(udfdPathLdLib, tsUdfdLdLibPath, udfdLdLibPathLen);
   udfdPathLdLib[udfdLdLibPathLen] = ':';
-  strncpy(udfdPathLdLib + udfdLdLibPathLen + 1, pathTaosdLdLib, sizeof(udfdPathLdLib) - udfdLdLibPathLen);
+  strncpy(udfdPathLdLib + udfdLdLibPathLen + 1, pathTaosdLdLib, sizeof(udfdPathLdLib) - udfdLdLibPathLen - 1);
   if (udfdLdLibPathLen + taosdLdLibPathLen < 1024) {
     fnInfo("udfd LD_LIBRARY_PATH: %s", udfdPathLdLib);
   } else {
-- 
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