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Bug#1097448: [PATCH] fix netcat-openbsd: ftbfs with GCC-15

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From: "mark.yang" <mark.yang@lge.com>

* fix build failure with GCC-15
netcat.c:1443:41: error: passing argument 2 of 'signal' from incompatible pointer type [-Wincompatible-pointer-types]
 1443 |                         signal(SIGALRM, quit);
      |                                         ^~~~
      |                                         |
      |                                         void (*)(void)
In file included from netcat.c:100:
TOPDIR/tmp/work/core2-64-oe-linux/netcat-openbsd/1.195/recipe-sysroot/usr/include/signal.h:88:57: note: expected '__sighandler_t' {aka 'void (*)(int)'} but argument is of type 'void (*)(void)'
   88 | extern __sighandler_t signal (int __sig, __sighandler_t __handler)
      |                                          ~~~~~~~~~~~~~~~^~~~~~~~~
netcat.c:241:13: note: 'quit' declared here
  241 | static void quit();
      |             ^~~~
TOPDIR/tmp/work/core2-64-oe-linux/netcat-openbsd/1.195/recipe-sysroot/usr/include/signal.h:72:16: note: '__sighandler_t' declared here
   72 | typedef void (*__sighandler_t) (int);
      |                ^~~~~~~~~~~~~~
make: *** [Makefile:17: netcat.o] Error 1

Signed-off-by: mark.yang <mark.yang@lge.com>
---
 netcat.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/netcat.c b/netcat.c
index d70598a..b8ba959 100644
--- a/netcat.c
+++ b/netcat.c
@@ -238,7 +238,7 @@ char *proto_name(int uflag, int dccpflag);
 static int connect_with_timeout(int fd, const struct sockaddr *sa,
         socklen_t salen, int ctimeout);
 
-static void quit();
+static void quit(int sig);
 
 int    b64_ntop(u_char const *src, size_t srclength, char *target, size_t targsize);
 int    b64_pton(char const *src, u_char *target, size_t targsize);
@@ -2235,7 +2235,7 @@ usage(int ret)
  * quit()
  * handler for a "-q" timeout (exit 0 instead of 1)
  */
-static void quit()
+static void quit(__attribute__((unused)) int sig)
 {
 	exit(0);
 }

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Bug#1097448: [PATCH] fix netcat-openbsd: ftbfs with GCC-15 mark.yang@lge.com - 2025-04-16 14:50 +0200

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