// errorcheck// 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.package main
funcmain() {
_ =nil// ERROR "use of untyped nil"
_, _ =nil,1// ERROR "use of untyped nil"
_, _ =1,nil// ERROR "use of untyped nil"
_ =append(nil,1,2,3)// ERROR "untyped nil"}