From 9ba8078272b36cc40708975f60eaeb6de6b77360 Mon Sep 17 00:00:00 2001
From: Santiago Gimeno <santiago.gimeno@gmail.com>
Date: Mon, 25 Aug 2025 16:22:15 +0200
Subject: [PATCH] netbsd: fix thread affinity compilation error (#4787)

Fixes: https://github.com/libuv/libuv/issues/4785
---
 src/unix/core.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/src/unix/core.c b/src/unix/core.c
index 97db50345..a5c9dd6e3 100644
--- a/src/unix/core.c
+++ b/src/unix/core.c
@@ -2048,8 +2048,8 @@ unsigned int uv_available_parallelism(void) {
 #elif defined(__NetBSD__)
   cpuset_t* set = cpuset_create();
   if (set != NULL) {
-    if (0 == sched_getaffinity_np(getpid(), sizeof(set), &set))
-      rc = uv__cpu_count(&set);
+    if (0 == sched_getaffinity_np(getpid(), cpuset_size(set), set))
+      rc = uv__cpu_count(set);
     cpuset_destroy(set);
   }
 #elif defined(__APPLE__)