From 7152cc1ba6db0a6eb2761efc033040d95465b5cf Mon Sep 17 00:00:00 2001
From: Matthew Flatt <mflatt@racket-lang.org>
Date: Wed, 21 Jun 2017 16:22:46 -0600
Subject: [PATCH] rktio: add <sys/types.h> to reliably get `u_char`

---
 racket/src/rktio/rktio_network.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/racket/src/rktio/rktio_network.c b/racket/src/rktio/rktio_network.c
index 3cc212a02d..6635309d8f 100644
--- a/racket/src/rktio/rktio_network.c
+++ b/racket/src/rktio/rktio_network.c
@@ -12,6 +12,7 @@
 # include <netinet/in.h>
 # include <netdb.h>
 # include <sys/socket.h>
+# include <sys/types.h>
 # include <fcntl.h>
 # include <errno.h>
 # define TCP_SOCKSENDBUF_SIZE 32768