1 // Copyright 2023 The Go Authors. All rights reserved.
2 // Use of this source code is governed by a BSD-style
3 // license that can be found in the LICENSE file.
4 5 //go:build netgo && netcgo
6 7 package net
8 9 func init() {
10 // This will give a compile time error about the unused constant.
11 // The advantage of this approach is that the gc compiler
12 // actually prints the constant, making the problem obvious.
13 "Do not use both netgo and netcgo build tags."
14 }
15