From d2847eb0e0623568e07cab88717c480f3194d229 Mon Sep 17 00:00:00 2001
From: "Z. Liu" <zhixu.liu@gmail.com>
Date: Tue, 27 Oct 2026 11:05:35 +0800
Subject: [PATCH] Use an ANSI prototype for the bundled strmode()
 implementation

glibc does not provide strmode(), so configure leaves HAVE_STRMODE
undefined and lib/util.c falls back to include/strmode.h which uses
a K&R style function definition. This is invalid in C23 and cause
compilation to fail with recent GCC/Clang when using the default
-std=gnu23:

    strmode.h:39:9: error: unknown type name 'mode'
    strmode.h:39:15: error: unknown type name 'p'

Signed-off-by: Z. Liu <zhixu.liu@gmail.com>

diff --git a/lib/strmode.h b/lib/strmode.h
index 9d94933..f2d1f19 100755
--- a/lib/strmode.h
+++ b/lib/strmode.h
@@ -35,10 +35,8 @@ static char sccsid[] = "@(#)strmode.c	8.3 (Berkeley) 8/15/94";
 #include <sys/stat.h>
 #include <string.h>
 
-void
-strmode(mode, p)
-	mode_t mode;
-	char *p;
+static void
+strmode(mode_t mode, char *p)
 {
 	 /* print type */
 	switch (mode & S_IFMT) {
-- 
2.49.1