--- a/samba-4.19.8/lib/replace/system/readline.h        2023-07-18 10:14:54.478091000 +0200
+++ b/lib/replace/system/readline.h     2024-10-02 13:47:48.773606000 +0200
@@ -46,10 +46,10 @@
 #endif

 #ifdef HAVE_NEW_LIBREADLINE
-#ifdef HAVE_CPPFUNCTION
+#if defined(HAVE_RL_COMPLETION_FUNC_T)
+#  define RL_COMPLETION_CAST (rl_completion_func_t *)
+#elif defined(HAVE_CPPFUNCTION)
 #  define RL_COMPLETION_CAST (CPPFunction *)
-#elif defined(HAVE_RL_COMPLETION_T)
-#  define RL_COMPLETION_CAST (rl_completion_t *)
 #else
 #  define RL_COMPLETION_CAST
 #endif
diff -upr a/samba-4.19.8/libcli/smbreadline/wscript_configure b/libcli/smbreadline/wscript_configure
--- a/samba-4.19.8/libcli/smbreadline/wscript_configure 2023-07-18 10:14:54.558091600 +0200
+++ b/libcli/smbreadline/wscript_configure      2024-10-02 13:47:48.774008000 +0200
@@ -51,10 +51,10 @@ conf.CHECK_CODE('''
 #    endif
 #  endif
 #endif
-int main(void) {rl_completion_t f; return 0;}
+int main(void) {rl_completion_func_t f; return 0;}
 ''',
 'HAVE_RL_COMPLETION_FUNC_T', execute=False, addmain=False,
-msg='Checking for rl_completion_t')
+msg='Checking for rl_completion_func_t')

 conf.CHECK_CODE('''
 #ifdef HAVE_READLINE_READLINE_H