fix:[TS-3038] coredump if nchar data not clear SColVal in schemaless

source/libs/parser/src/parInsertSml.c

@@ -25,6 +25,8 @@ static void clearColValArray(SArray* pCols) {
     if (TSDB_DATA_TYPE_NCHAR == pCol->type) {
       taosMemoryFreeClear(pCol->value.pData);
     }
+    pCol->flag = CV_FLAG_NONE;
+    pCol->value.val = 0;
   }
 }
 

utils/test/c/sml_test.c

@@ -939,6 +939,9 @@ int sml_ts2164_Test() {
       //      "meters,location=la,groupid=ca current=11.8,voltage=221,phase=0.27",
       "meters,location=la,groupid=ca current=11.8,voltage=221",
       "meters,location=la,groupid=ca current=11.8,voltage=221,phase=0.27",
+      "ts3038,location=l2a,groupid=ca current=L\"11.8\"",
+      "ts3038,location=l2a,groupid=ca voltage=L\"221\"",
+      "ts3038,location=l2a,groupid=ca phase=L\"221\"",
       //      "meters,location=la,groupid=cb current=11.8,voltage=221,phase=0.27",
   };