From 9c9824bcaf092cb99988d59717674b73b5d0d19c Mon Sep 17 00:00:00 2001 From: Dario Binacchi Date: Sat, 28 Sep 2024 11:03:11 +0200 Subject: [PATCH] arpd: use designated initializers for msghdr structure This patch fixes the following error: arpd.c:442:17: error: initialization of 'int' from 'void *' makes integer from pointer without a cast [-Wint-conversion] 442 | NULL, 0, raised by Buildroot autobuilder [1]. In the case in question, the analysis of socket.h [2] containing the msghdr structure shows that it has been modified with the addition of padding fields, which cause the compilation error. The use of designated initializers allows the issue to be fixed. struct msghdr { void *msg_name; socklen_t msg_namelen; struct iovec *msg_iov; int __pad1; int msg_iovlen; int __pad1; void *msg_control; int __pad2; socklen_t msg_controllen; int __pad2; int msg_flags; }; [1] http://autobuild.buildroot.org/results/e4cdfa38ae9578992f1c0ff5c4edae3cc0836e3c/ [2] iproute2/host/mips64-buildroot-linux-musl/sysroot/usr/include/sys/socket.h Signed-off-by: Dario Binacchi Signed-off-by: Stephen Hemminger --- misc/arpd.c | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-) diff --git a/misc/arpd.c b/misc/arpd.c index e77ef539..a42603f6 100644 --- a/misc/arpd.c +++ b/misc/arpd.c @@ -437,10 +437,10 @@ static void get_kern_msg(void) struct iovec iov; char buf[8192]; struct msghdr msg = { - (void *)&nladdr, sizeof(nladdr), - &iov, 1, - NULL, 0, - 0 + .msg_name = &nladdr, + .msg_namelen = sizeof(nladdr), + .msg_iov = &iov, + .msg_iovlen = 1, }; iov.iov_base = buf;