# HG changeset patch
# User Bram Moolenaar <Bram@vim.org>
# Date 1644607803 -3600
# Node ID 517daf1a6e5bcf12cac6a5233b482106d5666ea5
# Parent  46d8185de1e960595ee18cd08b5c52e816235b2b
patch 8.2.4347: in some build setups UNUSED is not defined

Commit: https://github.com/vim/vim/commit/bd89d4406327d3a30517443a4a518f49ebc99368
Author: ola.soder@axis.com <ola.soder@axis.com>
Date:   Fri Feb 11 19:27:55 2022 +0000

    patch 8.2.4347: in some build setups UNUSED is not defined

    Problem:    In some build setups UNUSED is not defined.
    Solution:   Change the logic of how UNUSED is defined. (Ola S?der,
                closes #9734)

diff --git a/src/version.c b/src/version.c
--- a/src/version.c
+++ b/src/version.c
@@ -747,6 +747,8 @@ static char *(features[]) =
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    4347,
+/**/
     4346,
 /**/
     4345,
diff --git a/src/vim.h b/src/vim.h
--- a/src/vim.h
+++ b/src/vim.h
@@ -245,12 +245,19 @@
 
 // Mark unused function arguments with UNUSED, so that gcc -Wunused-parameter
 // can be used to check for mistakes.
-#if defined(HAVE_ATTRIBUTE_UNUSED) || defined(__MINGW32__)
-# if !defined(UNUSED)
+#ifndef UNUSED
+# if defined(HAVE_ATTRIBUTE_UNUSED) || defined(__MINGW32__)
 #  define UNUSED __attribute__((unused))
+# else
+#  if defined __has_attribute
+#   if __has_attribute(unused)
+#    define UNUSED __attribute__((unused))
+#   endif
+#  endif
 # endif
-#else
-# define UNUSED
+# ifndef UNUSED
+#  define UNUSED
+# endif
 #endif
 
 // Used to check for "sun", "__sun" is used by newer compilers.