From c7c344302d81a36b20d3d26a3d13367c8ed2c80d Mon Sep 17 00:00:00 2001
From: Florian Weimer <fweimer@redhat.com>
Date: Tue, 10 Jan 2023 12:31:03 +0100
Subject: [PATCH 1/2] configure.in: C99 compatibility fix

Avoid implicit declarations of inet_pton, exit.  Include <arpa/inet.h>
for the glibc declaration.  Return from main instead of calling exit.
This avoids compilation errors with future compilers.
---
 configure.in | 9 ++++++---
 1 file changed, 6 insertions(+), 3 deletions(-)

diff --git a/configure.in b/configure.in
index f1cdd10..678fe7d 100644
--- a/configure.in
+++ b/configure.in
@@ -119,7 +119,7 @@ AC_CHECK_LIB(inet6, main,
 AC_CHECK_FUNCS(memcpy strtol)
 AC_CHECK_FUNCS(strcasecmp strncasecmp getopt_long)
 AC_HEADER_STDC([])
-AC_CHECK_HEADERS(sys/types.h sys/socket.h netinet/in.h netdb.h sys/time.h sys/stat.h sys/fcntl.h malloc.h locale.h stdint.h inttypes.h idna.h)
+AC_CHECK_HEADERS(sys/types.h sys/socket.h netinet/in.h netdb.h sys/time.h sys/stat.h sys/fcntl.h malloc.h locale.h stdint.h inttypes.h idna.h arpa/inet.h)
 AC_HEADER_TIME
 
 
@@ -139,13 +139,16 @@ AC_TRY_RUN(
 #ifdef HAVE_NETINET_IN_H
 #include <netinet/in.h>
 #endif
+#ifdef HAVE_ARPA_INET_H
+#include <arpa/inet.h>
+#endif
 int main()
   {
     struct in6_addr addr6;
     if (inet_pton(AF_INET6, "::1", &addr6) < 1)
-      exit(1);
+      return 1;
     else
-      exit(0);
+      return 0;
   }
   ], [
        AC_MSG_RESULT(yes)

From 96fdd331c21421a313b6b97cb62e0c775ddc061c Mon Sep 17 00:00:00 2001
From: Florian Weimer <fweimer@redhat.com>
Date: Tue, 10 Jan 2023 12:36:30 +0100
Subject: [PATCH 2/2] <utils.h>: Add timeout_init prototype

So that it can be called from the main function.  This avoids a
compilation error with future compilers.
---
 include/utils.h | 1 +
 src/utils.c     | 2 +-
 2 files changed, 2 insertions(+), 1 deletion(-)

diff --git a/include/utils.h b/include/utils.h
index 754ddff..cd98b29 100644
--- a/include/utils.h
+++ b/include/utils.h
@@ -28,6 +28,7 @@ char *create_string(const char *fmt, ...);
 int split_host_from_query(struct s_whois_query *wq);
 int make_connect(const char *, int);
 int add_text_to_buffer(char **, const char *);
+void timeout_init(void);
 
 
 #endif
diff --git a/src/utils.c b/src/utils.c
index ab01c2c..f82bd1c 100644
--- a/src/utils.c
+++ b/src/utils.c
@@ -348,7 +348,7 @@ split_host_from_query(struct s_whois_query *wq)
  *  file.
  */
 void
-timeout_init()
+timeout_init(void)
 {
   int iret;
   char *ret = "75", *ret2;