From e97e7aa04381544880f4a4f6dff324bc88ea3533 Mon Sep 17 00:00:00 2001
From: eeff <33566201+eeff@users.noreply.github.com>
Date: Wed, 2 Aug 2023 18:05:56 +0800
Subject: [PATCH] fix(core): check against NULL subscription params

---
 src/core/subscribe.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/src/core/subscribe.c b/src/core/subscribe.c
index 1b38c4c1..a1d466bc 100644
--- a/src/core/subscribe.c
+++ b/src/core/subscribe.c
@@ -239,8 +239,8 @@ int neu_subscribe_manager_update_params(neu_subscribe_mgr_t *mgr,
         return NEU_ERR_GROUP_NOT_SUBSCRIBE;
     }
 
-    char *p = strdup(params);
-    if (NULL == p) {
+    char *p = NULL;
+    if (params && NULL == (p = strdup(params))) {
         return NEU_ERR_EINTERNAL;
     }