From fd08d7f3230482aa655fe4cd525f99e1b7e6f4be Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=E8=8E=AB=E8=8B=A5=E9=BA=A6=E9=A6=99?= <903465575@qq.com>
Date: Sun, 15 Sep 2024 16:32:07 +0800
Subject: [PATCH] [kvdb] fix null-pointer dereference (#314)

The C library function - strlen() does not accept a null-pointer.

Signed-off-by: FragrantRye <903465575@qq.com>
---
 src/fdb_kvdb.c | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/src/fdb_kvdb.c b/src/fdb_kvdb.c
index 00cf557..17a4c46 100644
--- a/src/fdb_kvdb.c
+++ b/src/fdb_kvdb.c
@@ -1380,7 +1380,11 @@ fdb_err_t fdb_kv_set(fdb_kvdb_t db, const char *key, const char *value)
 {
     struct fdb_blob blob;
 
-    return fdb_kv_set_blob(db, key, fdb_blob_make(&blob, value, strlen(value)));
+    if (value) {
+        return fdb_kv_set_blob(db, key, fdb_blob_make(&blob, value, strlen(value)));
+    } else {
+        return fdb_kv_del(db, key);
+    }
 }
 
 /**