From 4c152b6724d252efa95344715ef053d4f8068a20 Mon Sep 17 00:00:00 2001
From: dapan1121 <89396746@qq.com>
Date: Tue, 13 Apr 2021 14:36:01 +0800
Subject: [PATCH] fix client crash issue

---
 src/query/src/qExtbuffer.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/src/query/src/qExtbuffer.c b/src/query/src/qExtbuffer.c
index a73f385282..73b5b81e52 100644
--- a/src/query/src/qExtbuffer.c
+++ b/src/query/src/qExtbuffer.c
@@ -266,6 +266,7 @@ int32_t tExtMemBufferFlush(tExtMemBuffer *pMemBuffer) {
     size_t retVal = fwrite((char *)&(first->item), pMemBuffer->pageSize, 1, pMemBuffer->file);
     if (retVal <= 0) {  // failed to write to buffer, may be not enough space
       ret = TAOS_SYSTEM_ERROR(errno);
+      pMemBuffer->pHead = first;
       return ret;
     }
 
-- 
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