1 files changed, 14 insertions, 0 deletions
diff --git a/src/net/netgo_netcgo.go b/src/net/netgo_netcgo.go
new file mode 100644
index 0000000..7f3a5fd
--- /dev/null
+++ b/src/net/netgo_netcgo.go
@@ -0,0 +1,14 @@
+// Copyright 2023 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.
+
+//go:build netgo && netcgo
+
+package net
+
+func init() {
+	// This will give a compile time error about the unused constant.
+	// The advantage of this approach is that the gc compiler
+	// actually prints the constant, making the problem obvious.
+	"Do not use both netgo and netcgo build tags."
+}