// Copyright 2019 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.

// +build aix darwin dragonfly

package runtime

func () (,  int32,  int32) {
	, ,  = pipe()
	if  != 0 {
		return -1, -1, 
	}
	closeonexec()
	setNonblock()
	closeonexec()
	setNonblock()
	return , , 
}