From b946479b0f283789d9b6bc14d661b415e5184932 Mon Sep 17 00:00:00 2001
From: Watson <watson1978@gmail.com>
Date: Wed, 21 Aug 2024 15:05:11 +0900
Subject: [PATCH] Fix build error with Ruby 3.1 on Windows

Since Ruby 3.2, `pipe` function declaration is provided in https://github.com/ruby/ruby/blob/21c708ee802e1a59901eccc6448e40e8f72189b8/include/ruby/missing.h#L292
However, it does not provided it with Ruby 3.1.

This patch will define `pipe` macro to use proper function due to fix build error.
---
 ext/io/event/interrupt.c | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/ext/io/event/interrupt.c b/ext/io/event/interrupt.c
index 0907e8c1..da6f8cdd 100644
--- a/ext/io/event/interrupt.c
+++ b/ext/io/event/interrupt.c
@@ -25,6 +25,13 @@
 
 #include "selector/selector.h"
 
+#ifdef HAVE_RUBY_WIN32_H
+#include <ruby/win32.h>
+#if !defined(HAVE_PIPE) && !defined(pipe)
+#define pipe(p)	rb_w32_pipe(p)
+#endif
+#endif
+
 #ifdef HAVE_SYS_EVENTFD_H
 #include <sys/eventfd.h>