From c69664a0d45cbfcaf43de05e616c446ad069be4c Mon Sep 17 00:00:00 2001
From: Liam Galvin <liam.galvin@switchconcepts.com>
Date: Mon, 13 Aug 2018 17:28:27 +0100
Subject: [PATCH] try to fix darwin pty

---
 pty/pty_darwin.go | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/pty/pty_darwin.go b/pty/pty_darwin.go
index 3b5f074..12dabca 100644
--- a/pty/pty_darwin.go
+++ b/pty/pty_darwin.go
@@ -39,7 +39,11 @@ func open() (*os.File, *os.File, error) {
 }
 
 func getpt() (file *os.File, err error) {
-	return os.OpenFile("/dev/ptmx", os.O_RDWR, 0)
+	f, err := os.OpenFile("/dev/ptmx", os.O_RDWR|syscall.O_CLOEXEC, 0)
+	if err != nil {
+		return nil, err
+	}
+	return os.NewFile(uintptr(f), "/dev/ptmx"), nil
 }
 
 func ptsname(file *os.File) (name string, err error) {