From 67f7e82eed27ed03ecca066af6ef1e7b59347b3f Mon Sep 17 00:00:00 2001
From: nobu <nobu@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>
Date: Wed, 9 Sep 2015 02:40:02 +0000
Subject: [PATCH] io.c: sys/wait.h

* io.c: BSDs need sys/wait.h for WNOHANG.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@51809 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
---
 io.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/io.c b/io.c
index 4951a09432..982e83e5cc 100644
--- a/io.c
+++ b/io.c
@@ -96,6 +96,10 @@
 #include <sys/uio.h>
 #endif
 
+#ifdef HAVE_SYS_WAIT_H
+# include <sys/wait.h>		/* for WNOHANG on BSD */
+#endif
+
 #if defined(__BEOS__) || defined(__HAIKU__)
 # ifndef NOFILE
 #  define NOFILE (OPEN_MAX)