diff --git a/bugfix-fix-clang.patch b/bugfix-fix-clang.patch
new file mode 100644
index 0000000000000000000000000000000000000000..6acadc45249e25c923fe907d6c96953693ccad1a
--- /dev/null
+++ b/bugfix-fix-clang.patch
@@ -0,0 +1,13 @@
+diff -u -r dhcp-4.4.3/client/dhclient.c dhcp-4.4.3/client/dhclient.c
+--- dhcp-4.4.3/client/dhclient.c	2023-06-28 13:24:44.000000000 +0800
++++ dhcp-4.4.3/client/dhclient.c	2023-06-28 13:26:34.000000000 +0800
+@@ -49,6 +49,9 @@
+  * Defined in stdio.h when _GNU_SOURCE is set, but we don't want to define
+  * that when building ISC code.
+  */
++#ifdef asprintf
++#undef asprintf
++#endif
+ extern int asprintf(char **strp, const char *fmt, ...);
+ 
+ TIME default_lease_time = 43200; /* 12 hours... */
diff --git a/dhcp.spec b/dhcp.spec
index fa9ffb6a3fdb23889e01c25dc2eb86af68c38672..9304c99aabe39db57180fdeccb881d793e399881 100644
--- a/dhcp.spec
+++ b/dhcp.spec
@@ -3,7 +3,7 @@
 
 Name:      dhcp
 Version:   4.4.3
-Release:   2
+Release:   3
 Summary:   Dynamic host configuration protocol software
 #Please don't change the epoch on this package
 Epoch:     12
@@ -59,6 +59,7 @@ Patch38: backport-Fix-CVE-2021-25220.patch
 Patch39: backport-Fix-CVE-2022-2928.patch
 Patch40: backport-Fix-CVE-2022-2929.patch
 Patch41: Revert-correcting-the-logic-in-dhclient.patch
+Patch42: bugfix-fix-clang.patch
 
 BuildRequires: gcc autoconf automake libtool openldap-devel krb5-devel libcap-ng-devel
 BuildRequires: systemd systemd-devel
@@ -307,6 +308,12 @@ exit 0
 %{_mandir}/man3/omapi.3.gz
 
 %changelog
+* Fri Sep 08 2023 yoo <sunyuechi@iscas.ac.cn> - 12:4.4.3-3
+- Type:bugfix
+- ID:
+- SUG:restart
+- DESC:fix clang build error
+
 * Thu Jun 29 2023 renmingshuai <renmingshuai@huawei.com> - 12:4.4.3-2
 - Type:bugfix
 - ID: