From fd5e3654c45d75a638bf7ce8bad3762e1ae9160c Mon Sep 17 00:00:00 2001
From: Yasuhiro Matsumoto <mattn.jp@gmail.com>
Date: Fri, 28 Oct 2022 17:10:00 +0900
Subject: [PATCH] use WSAGetLastError() for errno on Windows

---
 mrbgems/mruby-io/src/io.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/mrbgems/mruby-io/src/io.c b/mrbgems/mruby-io/src/io.c
index 765dc9051..d760a76d5 100644
--- a/mrbgems/mruby-io/src/io.c
+++ b/mrbgems/mruby-io/src/io.c
@@ -1258,8 +1258,13 @@ mrb_io_s_select(mrb_state *mrb, mrb_value klass)
 retry:
   n = select(max, rp, wp, ep, tp);
   if (n < 0) {
+#ifdef _WIN32
+    if (WSAGetLastError() != WSAEINTR)
+      mrb_sys_fail(mrb, "select failed");
+#else
     if (errno != EINTR)
       mrb_sys_fail(mrb, "select failed");
+#endif
     if (tp == NULL)
       goto retry;
     interrupt_flag = 1;