[TD-3825] <fix> to fix bug which make with asan caused

src/client/src/tscServer.c

@@ -1495,7 +1495,9 @@ int tscBuildAlterTableMsg(SSqlObj *pSql, SSqlInfo *pInfo) {
 
   pMsg = (char *)pSchema;
   pAlterTableMsg->tagValLen = htonl(pAlterInfo->tagData.dataLen);
-  memcpy(pMsg, pAlterInfo->tagData.data, pAlterInfo->tagData.dataLen);
+  if (pAlterInfo->tagData.dataLen > 0) {
+ 	 memcpy(pMsg, pAlterInfo->tagData.data, pAlterInfo->tagData.dataLen);
+  }
   pMsg += pAlterInfo->tagData.dataLen;
 
   msgLen = (int32_t)(pMsg - (char*)pAlterTableMsg);

src/kit/taosdemo/taosdemo.c

@@ -90,7 +90,7 @@ enum TEST_MODE {
 #define OPT_ABORT          1 /* –abort */
 #define STRING_LEN         60000
 #define MAX_PREPARED_RAND  1000000
-#define MAX_FILE_NAME_LEN  256
+#define MAX_FILE_NAME_LEN  128
 
 #define   MAX_SAMPLES_ONCE_FROM_FILE   10000
 #define   MAX_NUM_DATATYPE 10

src/mnode/src/mnodeTable.c

@@ -1068,7 +1068,9 @@ static int32_t mnodeProcessCreateSuperTableMsg(SMnodeMsg *pMsg) {
   pStable->info.tableId = strdup(pCreate->tableName);
   pStable->info.type    = TSDB_SUPER_TABLE;
   pStable->createdTime  = taosGetTimestampMs();
-  pStable->uid          = (us << 24) + ((sdbGetVersion() & ((1ul << 16) - 1ul)) << 8) + (taosRand() & ((1ul << 8) - 1ul));
+  int64_t x = (us&0x000000FFFFFFFFFF);
+  x = x<<24;
+  pStable->uid          = x + ((sdbGetVersion() & ((1ul << 16) - 1ul)) << 8) + (taosRand() & ((1ul << 8) - 1ul));
   pStable->sversion     = 0;
   pStable->tversion     = 0;
   pStable->numOfColumns = numOfColumns;