--- /dev/null
+// Copyright 2020 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 !(bad || worse)
+// +build !bad,!worse
+
+package a
+
+//want +1 `misplaced \+build comment`
+// +build other