From 0935f72e78915510e9a27e9f64eb2ddd2079134c Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Alex=20R=C3=B8nne=20Petersen?= <alex@alexrp.com>
Date: Thu, 15 Oct 2026 14:56:00 +0200
Subject: [PATCH] std.c: fix sendmmsg() signature for freebsd

---
 lib/std/c.zig         | 6 +++++-
 lib/std/c/freebsd.zig | 3 +++
 2 files changed, 8 insertions(+), 1 deletion(-)

diff --git a/lib/std/c.zig b/lib/std/c.zig
index 66c267cf5c9cd8dc28a8ffb8d258e4883d4e9e6f..bda3c688146f7684a9fbe366bdc08ce81122a663 100644
--- a/lib/std/c.zig
+++ b/lib/std/c.zig
@@ -11034,7 +11034,10 @@ pub extern "c" fn sendto(
     addrlen: socklen_t,
 ) isize;
 pub extern "c" fn sendmsg(sockfd: fd_t, msg: *const msghdr_const, flags: u32) isize;
-pub extern "c" fn sendmmsg(sockfd: fd_t, msgvec: [*]mmsghdr, n: c_uint, flags: u32) c_int;
+pub const sendmmsg = switch (native_os) {
+    .freebsd => freebsd.sendmmsg,
+    else => private.sendmmsg,
+};
 
 pub extern "c" fn recv(
     sockfd: fd_t,
@@ -11897,6 +11900,7 @@ const private = struct {
     extern "c" fn recvmsg(sockfd: fd_t, msg: *msghdr, flags: u32) isize;
     extern "c" fn sched_yield() c_int;
     extern "c" fn sendfile(out_fd: fd_t, in_fd: fd_t, offset: ?*off_t, count: usize) isize;
+    extern "c" fn sendmmsg(sockfd: fd_t, msgvec: [*]mmsghdr, n: c_uint, flags: u32) c_int;
     extern "c" fn sigaction(sig: SIG, noalias act: ?*const Sigaction, noalias oact: ?*Sigaction) c_int;
     extern "c" fn sigdelset(set: ?*sigset_t, signo: SIG) c_int;
     extern "c" fn sigaddset(set: ?*sigset_t, signo: SIG) c_int;
diff --git a/lib/std/c/freebsd.zig b/lib/std/c/freebsd.zig
index adea1bdadfddd08bdfe9cac4b077c7b4c12a5761..695670f6aaf198e5433b91538732ef9486a01c9b 100644
--- a/lib/std/c/freebsd.zig
+++ b/lib/std/c/freebsd.zig
@@ -21,6 +21,7 @@ const timespec = std.c.timespec;
 const uid_t = std.c.uid_t;
 const sf_hdtr = std.c.sf_hdtr;
 const clockid_t = std.c.clockid_t;
+const mmsghdr = std.c.mmsghdr;
 
 comptime {
     assert(builtin.os.tag == .freebsd); // Prevent access of std.c symbols on wrong OS.
@@ -41,6 +42,8 @@ pub extern "c" fn sendfile(
     flags: u32,
 ) c_int;
 
+pub extern "c" fn sendmmsg(sockfd: fd_t, msgvec: [*]mmsghdr, vlen: usize, flags: u32) isize;
+
 pub const UMTX_OP = enum(c_int) {
     LOCK = 0,
     UNLOCK = 1,
-- 
2.54.0