From aeaee423b6fefd6e321dfb071f9b0d483946f744 Mon Sep 17 00:00:00 2001
From: Shuduo Sang <sangshuduo@gmail.com>
Date: Tue, 22 Jun 2021 21:48:39 +0800
Subject: [PATCH] [TD-4823]<fix>: taosdemo getTableName return empty. (#6571)

* [TD-4823]<fix>: taosdemo getTableName return empty.

* fix typo.
---
 src/kit/taosdemo/taosdemo.c | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/src/kit/taosdemo/taosdemo.c b/src/kit/taosdemo/taosdemo.c
index 865224d2c3..33ee2a9bc2 100644
--- a/src/kit/taosdemo/taosdemo.c
+++ b/src/kit/taosdemo/taosdemo.c
@@ -6004,6 +6004,12 @@ static void* syncWriteProgressive(threadInfo *pThreadInfo) {
       verbosePrint("%s() LN%d: tid=%d seq=%"PRId64" tableName=%s\n",
              __func__, __LINE__,
              pThreadInfo->threadID, tableSeq, tableName);
+      if (0 == strlen(tableName)) {
+        errorPrint("[%d] %s() LN%d, getTableName return null\n",
+            pThreadInfo->threadID, __func__, __LINE__);
+        free(pThreadInfo->buffer);
+        return NULL;
+      }
 
       int64_t remainderBufLen = maxSqlLen;
       char *pstr = pThreadInfo->buffer;