gdbusauth.c: In function '_g_dbus_auth_run_server':
gdbusauth.c:1302:11: error: '%s' directive argument is null [-Werror=format-overflow=]
 1302 |           debug_print ("SERVER: WaitingForBegin, read '%s'", line);
      |           ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
  CC       libgio_2_0_la-gdbusobjectmanager.lo
gdbusmessage.c: In function 'parse_value_from_blob':

解决方法:

if(line != NULL)
            debug_print ("SERVER: WaitingForBegin, read '%s'", line);

gdbusmessage.c: In function 'g_dbus_message_to_blob':
gdbusmessage.c:2702:30: error: '%s' directive argument is null [-Werror=format-overflow=]
 2702 |       tupled_signature_str = g_strdup_printf ("(%s)", signature_str);
      |                              ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
gdbusintrospection.c: In function 'g_dbus_interface_info_generate_xml':
gdbusintrospection.c:751:3: warning: 'access_string' may be used uninitialized in this function [-Wmaybe-uninitialized]

解决方法:

if(signature_str!= NULL)