Merge pull request #4230 from zjd1988/develop

'name' will be covered by second strcpy/strcat function

src/util/src/tlog.c

@@ -287,17 +287,17 @@ static int32_t taosOpenLogFile(char *fn, int32_t maxLines, int32_t maxFileNum) {
   tsLogObj.fileNum = maxFileNum;
   taosGetLogFileName(fn);
 
+
   if (strlen(fn) < LOG_FILE_NAME_LEN + 50 - 2) {
     strcpy(name, fn);
     strcat(name, ".0");
   }
+  bool log0Exist = stat(name, &logstat0) >= 0;
 
   if (strlen(fn) < LOG_FILE_NAME_LEN + 50 - 2) {
     strcpy(name, fn);
     strcat(name, ".1");
   }
-
-  bool log0Exist = stat(name, &logstat0) >= 0;
   bool log1Exist = stat(name, &logstat1) >= 0;
   
   // if none of the log files exist, open 0, if both exists, open the old one