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diff --git a/tests/test-inet_pton.c b/tests/test-inet_pton.c
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+/* Test of inet_pton function.
+ Copyright (C) 2009-2022 Free Software Foundation, Inc.
+
+ This program is free software: you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation; either version 3 of the License, or
+ (at your option) any later version.
+
+ This program is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with this program. If not, see <https://www.gnu.org/licenses/>. */
+
+/* Written by Bruno Haible <bruno@clisp.org>, 2009. */
+
+#include <config.h>
+
+#include <arpa/inet.h>
+
+#include "signature.h"
+SIGNATURE_CHECK (inet_pton, int, (int, const char *, void *));
+
+#include <netinet/in.h>
+#include <sys/socket.h>
+
+#include "macros.h"
+
+int
+main (void)
+{
+#if defined AF_INET /* HAVE_IPV4 */
+ {
+ /* This machine was for a long time known as
+ ma2s2.mathematik.uni-karlsruhe.de. */
+ const char printable[] = "129.13.115.2";
+ struct in_addr internal;
+ int ret;
+
+ ret = inet_pton (AF_INET, printable, &internal);
+ ASSERT (ret == 1);
+ /* Verify that internal is filled in network byte order. */
+ ASSERT (((unsigned char *) &internal)[0] == 0x81);
+ ASSERT (((unsigned char *) &internal)[1] == 0x0D);
+ ASSERT (((unsigned char *) &internal)[2] == 0x73);
+ ASSERT (((unsigned char *) &internal)[3] == 0x02);
+# ifdef WORDS_BIGENDIAN
+ ASSERT (internal.s_addr == 0x810D7302);
+# else
+ ASSERT (internal.s_addr == 0x02730D81);
+# endif
+ }
+#endif
+
+ return 0;
+}