golang deadcode 代码
文件路径：/src/cmd/vet/testdata/deadcode/deadcode.go
// Copyright 2013 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.
// This file contains tests for the dead code checker.
package deadcode
func _() int {
print(1)
return 2
println() // ERROR "unreachable code"
return 3
}