From 8b28864045b445b19ffc839e857bd95e2444aeb3 Mon Sep 17 00:00:00 2001
From: Hongze Cheng <hzcheng@taosdata.com>
Date: Fri, 9 Oct 2020 11:57:26 +0800
Subject: [PATCH] add string decode auto malloc

---
 src/util/inc/tcoding.h | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/src/util/inc/tcoding.h b/src/util/inc/tcoding.h
index ff34c15607..7a615a0ab8 100644
--- a/src/util/inc/tcoding.h
+++ b/src/util/inc/tcoding.h
@@ -355,8 +355,10 @@ static FORCE_INLINE void *taosDecodeString(void *buf, char **value) {
   uint64_t size = 0;
 
   buf = taosDecodeVariantU64(buf, &size);
-  *value = (char *)malloc((size_t)size + 1);
-  if (*value == NULL) return NULL;
+  if (*value == NULL) {
+    *value = (char *)malloc((size_t)size + 1);
+    if (*value == NULL) return NULL;
+  }
   memcpy(*value, buf, (size_t)size);
 
   (*value)[size] = '\0';
-- 
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