From d15b11b50e92a13ebe90f28f3ac8791a1385edaf Mon Sep 17 00:00:00 2001
From: Po Lu <luangruo@yahoo.com>
Date: Thu, 5 May 2022 13:44:19 +0800
Subject: [PATCH] Use bswap_32 and bswap_16 in Motif DND code

* src/xterm.c (SWAPCARD32, SAPCARD16): Use glibc/gnulib
byte-swapping functions if checking is disabled.
---
 src/xterm.c | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/src/xterm.c b/src/xterm.c
index 68ee63aea4e..285b1d625e8 100644
--- a/src/xterm.c
+++ b/src/xterm.c
@@ -618,6 +618,7 @@ along with GNU Emacs.  If not, see <https://www.gnu.org/licenses/>.  */
 #include <sys/stat.h>
 #include <flexmember.h>
 #include <c-ctype.h>
+#include <byteswap.h>
 
 #include "character.h"
 #include "coding.h"
@@ -1054,6 +1055,8 @@ typedef enum xm_byte_order
 #endif
   } xm_byte_order;
 
+#ifdef ENABLE_CHECKING
+
 #define SWAPCARD32(l)				\
   {						\
     struct { unsigned t : 32; } bit32;		\
@@ -1073,6 +1076,11 @@ typedef enum xm_byte_order
     s = bit16.t;				\
   }
 
+#else
+#define SWAPCARD32(l)	bswap_32 (l)
+#define SWAPCARD16(l)	bswap_16 (l)
+#endif
+
 typedef struct xm_targets_table_header
 {
   /* BYTE   */ uint8_t byte_order;
-- 
2.39.5