From db170cc56926bc9d0c71678a1d6a1792860e9204 Mon Sep 17 00:00:00 2001
From: Gryffindor <838492657@qq.com>
Date: Mon, 1 Feb 2021 17:00:06 +0800
Subject: [PATCH] fix potential null entry reference

---
 src/raft_log.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/src/raft_log.c b/src/raft_log.c
index 2188629b..433b15d1 100644
--- a/src/raft_log.c
+++ b/src/raft_log.c
@@ -150,6 +150,9 @@ int log_append_entry(log_t* me_, raft_entry_t* ety)
         return e;
 
     memcpy(&me->entries[me->back], ety, sizeof(raft_entry_t));
+    /** copy the data buf */
+    me->entries[me->back].data.buf = malloc(ety->data.len);
+    memcpy(me->entries[me->back].data.buf, ety->data.buf, ety->data.len);
 
     if (me->cb && me->cb->log_offer)
     {