From 08af865c50e74dd8f1d9b680f7d95618a5ba529c Mon Sep 17 00:00:00 2001
From: Meco Man <920369182@qq.com>
Date: Wed, 17 Mar 2021 13:56:42 +0800
Subject: [PATCH] =?UTF-8?q?[at][bug]=20=E4=BF=AE=E5=A4=8D=E5=86=85?=
 =?UTF-8?q?=E5=AD=98=E6=B3=84=E6=BC=8F=E7=9A=84bug?=
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---
 components/net/at/src/at_client.c | 9 +++++++--
 1 file changed, 7 insertions(+), 2 deletions(-)

diff --git a/components/net/at/src/at_client.c b/components/net/at/src/at_client.c
index 5e077512ae..81416be90b 100644
--- a/components/net/at/src/at_client.c
+++ b/components/net/at/src/at_client.c
@@ -104,18 +104,23 @@ void at_delete_resp(at_response_t resp)
  */
 at_response_t at_resp_set_info(at_response_t resp, rt_size_t buf_size, rt_size_t line_num, rt_int32_t timeout)
 {
+    char *p_temp;
     RT_ASSERT(resp);
 
     if (resp->buf_size != buf_size)
     {
         resp->buf_size = buf_size;
 
-        resp->buf = (char *) rt_realloc(resp->buf, buf_size);
-        if (!resp->buf)
+        p_temp = (char *) rt_realloc(resp->buf, buf_size);
+        if (p_temp == RT_NULL)
         {
             LOG_D("No memory for realloc response buffer size(%d).", buf_size);
             return RT_NULL;
         }
+        else
+        {
+            resp->buf = p_temp;
+        }
     }
 
     resp->line_num = line_num;
-- 
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