Update

vendor/golang.org/x/net/internal/socket/empty.s

@@ -2,6 +2,6 @@
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
-//go:build darwin && go1.12
+//go:build darwin
 
 // This exists solely so we can linkname in symbols from syscall.

vendor/golang.org/x/net/internal/socket/msghdr_solaris_64bit.go

@@ -6,7 +6,10 @@
 
 package socket
 
-import "unsafe"
+import (
+	"encoding/binary"
+	"unsafe"
+)
 
 func (h *msghdr) pack(vs []iovec, bs [][]byte, oob []byte, sa []byte) {
 	for i := range vs {
@@ -31,5 +34,5 @@ func (h *msghdr) controllen() int {
 }
 
 func (h *msghdr) flags() int {
-	return int(NativeEndian.Uint32(h.Pad_cgo_2[:]))
+	return int(binary.NativeEndian.Uint32(h.Pad_cgo_2[:]))
 }

vendor/golang.org/x/net/internal/socket/socket.go

@@ -7,6 +7,7 @@
 package socket // import "golang.org/x/net/internal/socket"
 
 import (
+	"encoding/binary"
 	"errors"
 	"net"
 	"runtime"
@@ -58,7 +59,7 @@ func (o *Option) GetInt(c *Conn) (int, error) {
 	if o.Len == 1 {
 		return int(b[0]), nil
 	}
-	return int(NativeEndian.Uint32(b[:4])), nil
+	return int(binary.NativeEndian.Uint32(b[:4])), nil
 }
 
 // Set writes the option and value to the kernel.
@@ -84,7 +85,7 @@ func (o *Option) SetInt(c *Conn, v int) error {
 		b = []byte{byte(v)}
 	} else {
 		var bb [4]byte
-		NativeEndian.PutUint32(bb[:o.Len], uint32(v))
+		binary.NativeEndian.PutUint32(bb[:o.Len], uint32(v))
 		b = bb[:4]
 	}
 	return o.set(c, b)

vendor/golang.org/x/net/internal/socket/sys.go

@@ -1,23 +0,0 @@
-// Copyright 2017 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.
-
-package socket
-
-import (
-	"encoding/binary"
-	"unsafe"
-)
-
-// NativeEndian is the machine native endian implementation of ByteOrder.
-var NativeEndian binary.ByteOrder
-
-func init() {
-	i := uint32(1)
-	b := (*[4]byte)(unsafe.Pointer(&i))
-	if b[0] == 1 {
-		NativeEndian = binary.LittleEndian
-	} else {
-		NativeEndian = binary.BigEndian
-	}
-}

vendor/golang.org/x/net/internal/socket/sys_posix.go

@@ -36,7 +36,7 @@ func marshalSockaddr(ip net.IP, port int, zone string, b []byte) int {
 	if ip4 := ip.To4(); ip4 != nil {
 		switch runtime.GOOS {
 		case "android", "illumos", "linux", "solaris", "windows":
-			NativeEndian.PutUint16(b[:2], uint16(sysAF_INET))
+			binary.NativeEndian.PutUint16(b[:2], uint16(sysAF_INET))
 		default:
 			b[0] = sizeofSockaddrInet4
 			b[1] = sysAF_INET
@@ -48,7 +48,7 @@ func marshalSockaddr(ip net.IP, port int, zone string, b []byte) int {
 	if ip6 := ip.To16(); ip6 != nil && ip.To4() == nil {
 		switch runtime.GOOS {
 		case "android", "illumos", "linux", "solaris", "windows":
-			NativeEndian.PutUint16(b[:2], uint16(sysAF_INET6))
+			binary.NativeEndian.PutUint16(b[:2], uint16(sysAF_INET6))
 		default:
 			b[0] = sizeofSockaddrInet6
 			b[1] = sysAF_INET6
@@ -56,7 +56,7 @@ func marshalSockaddr(ip net.IP, port int, zone string, b []byte) int {
 		binary.BigEndian.PutUint16(b[2:4], uint16(port))
 		copy(b[8:24], ip6)
 		if zone != "" {
-			NativeEndian.PutUint32(b[24:28], uint32(zoneCache.index(zone)))
+			binary.NativeEndian.PutUint32(b[24:28], uint32(zoneCache.index(zone)))
 		}
 		return sizeofSockaddrInet6
 	}
@@ -70,7 +70,7 @@ func parseInetAddr(b []byte, network string) (net.Addr, error) {
 	var af int
 	switch runtime.GOOS {
 	case "android", "illumos", "linux", "solaris", "windows":
-		af = int(NativeEndian.Uint16(b[:2]))
+		af = int(binary.NativeEndian.Uint16(b[:2]))
 	default:
 		af = int(b[1])
 	}
@@ -89,7 +89,7 @@ func parseInetAddr(b []byte, network string) (net.Addr, error) {
 		}
 		ip = make(net.IP, net.IPv6len)
 		copy(ip, b[8:24])
-		if id := int(NativeEndian.Uint32(b[24:28])); id > 0 {
+		if id := int(binary.NativeEndian.Uint32(b[24:28])); id > 0 {
 			zone = zoneCache.name(id)
 		}
 	}