From 3fd349d165990971e6e0f78e92300b4e41cfea92 Mon Sep 17 00:00:00 2001
From: kailixu <klxu@taosdata.com>
Date: Fri, 14 Jul 2023 19:30:31 +0800
Subject: [PATCH] chore: null check

---
 source/os/src/osSysinfo.c | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/source/os/src/osSysinfo.c b/source/os/src/osSysinfo.c
index 64fd714b85..e6479abeca 100644
--- a/source/os/src/osSysinfo.c
+++ b/source/os/src/osSysinfo.c
@@ -332,14 +332,14 @@ int32_t taosGetOsReleaseName(char *releaseName, char* sName, char* ver, int32_t
   if (!getWinVersionReleaseName(releaseName, maxLen)) {
     snprintf(releaseName, maxLen, "Windows");
   }
-  snprintf(sName, maxLen, "Windows");
+  if(sName) snprintf(sName, maxLen, "Windows");
   return 0;
 #elif defined(_TD_DARWIN_64)
   char osversion[32];
   size_t osversion_len = sizeof(osversion) - 1;
   int osversion_name[] = { CTL_KERN, KERN_OSRELEASE };
 
-  snprintf(sName, maxLen, "macOS");
+  if(sName) snprintf(sName, maxLen, "macOS");
   if (sysctl(osversion_name, 2, osversion, &osversion_len, NULL, 0) == -1) {
     return -1;
   }
@@ -378,6 +378,7 @@ int32_t taosGetOsReleaseName(char *releaseName, char* sName, char* ver, int32_t
     } else {
       continue;
     }
+    if (!dest) continue;
     const char *p = strchr(line, '=') + 1;
     if (*p == '"') {
       p++;